org.sakaiproject.assignment.tool.AssignmentAction.java Source code

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/**********************************************************************************
 * $URL$
 * $Id$
 ***********************************************************************************
 *
 *
 * Licensed under the Educational Community License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 *       http://www.opensource.org/licenses/ECL-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 *
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package org.sakaiproject.assignment.tool;

import au.com.bytecode.opencsv.CSVReader;

import java.io.ByteArrayInputStream;
import java.io.File;
import java.io.FileInputStream;
import java.io.FileOutputStream;
import java.io.IOException;
import java.io.InputStream;
import java.io.InputStreamReader;
import java.io.OutputStream;
import java.nio.ByteBuffer;
import java.nio.channels.FileChannel;
import java.text.Collator;
import java.text.DateFormat;
import java.text.DecimalFormat;
import java.text.NumberFormat;
import java.text.ParseException;
import java.text.RuleBasedCollator;
import java.text.SimpleDateFormat;
import java.util.ArrayList;
import java.util.Arrays;
import java.util.Collection;
import java.util.Collections;
import java.util.Comparator;
import java.util.Date;
import java.util.Enumeration;
import java.util.GregorianCalendar;
import java.util.HashMap;
import java.util.HashSet;
import java.util.Iterator;
import java.util.List;
import java.util.Map;
import java.util.Set;
import java.util.SortedSet;
import java.util.concurrent.ConcurrentSkipListSet;
import java.util.regex.Matcher;
import java.util.regex.Pattern;

import org.apache.commons.collections.CollectionUtils;
import org.apache.commons.lang.StringUtils;
import org.apache.commons.logging.Log;
import org.apache.commons.logging.LogFactory;
import org.apache.poi.hssf.usermodel.HSSFRow;
import org.apache.poi.hssf.usermodel.HSSFSheet;
import org.apache.poi.hssf.usermodel.HSSFWorkbook;
import org.apache.poi.poifs.filesystem.POIFSFileSystem;
import org.apache.tools.zip.ZipEntry;
import org.apache.tools.zip.ZipFile;
import org.sakaiproject.announcement.api.AnnouncementChannel;
import org.sakaiproject.announcement.api.AnnouncementMessage;
import org.sakaiproject.announcement.api.AnnouncementMessageEdit;
import org.sakaiproject.announcement.api.AnnouncementMessageHeaderEdit;
import org.sakaiproject.announcement.api.AnnouncementService;
import org.sakaiproject.assignment.api.Assignment;
import org.sakaiproject.assignment.api.Assignment.AssignmentAccess;
import org.sakaiproject.assignment.api.AssignmentConstants;
import org.sakaiproject.assignment.api.AssignmentContent;
import org.sakaiproject.assignment.api.AssignmentContentEdit;
import org.sakaiproject.assignment.api.AssignmentEdit;
import org.sakaiproject.assignment.api.AssignmentPeerAssessmentService;
import org.sakaiproject.assignment.api.AssignmentSubmission;
import org.sakaiproject.assignment.api.AssignmentSubmissionEdit;
import org.sakaiproject.assignment.api.model.AssignmentAllPurposeItem;
import org.sakaiproject.assignment.api.model.AssignmentAllPurposeItemAccess;
import org.sakaiproject.assignment.api.model.AssignmentModelAnswerItem;
import org.sakaiproject.assignment.api.model.AssignmentNoteItem;
import org.sakaiproject.assignment.api.model.AssignmentSupplementItemAttachment;
import org.sakaiproject.assignment.api.model.AssignmentSupplementItemService;
import org.sakaiproject.assignment.api.model.AssignmentSupplementItemWithAttachment;
import org.sakaiproject.assignment.api.model.PeerAssessmentItem;
import org.sakaiproject.assignment.cover.AssignmentService;
import org.sakaiproject.assignment.taggable.api.AssignmentActivityProducer;
import org.sakaiproject.assignment.taggable.tool.DecoratedTaggingProvider;
import org.sakaiproject.assignment.taggable.tool.DecoratedTaggingProvider.Pager;
import org.sakaiproject.assignment.taggable.tool.DecoratedTaggingProvider.Sort;
import org.sakaiproject.authz.api.AuthzGroup;
import org.sakaiproject.authz.api.Member;
import org.sakaiproject.authz.api.PermissionsHelper;
import org.sakaiproject.authz.api.Role;
import org.sakaiproject.authz.api.SecurityAdvisor;
import org.sakaiproject.authz.api.SecurityService;
import org.sakaiproject.authz.api.AuthzGroupService;
import org.sakaiproject.calendar.api.Calendar;
import org.sakaiproject.calendar.api.CalendarEvent;
import org.sakaiproject.calendar.api.CalendarEventEdit;
import org.sakaiproject.calendar.api.CalendarService;
import org.sakaiproject.cheftool.Context;
import org.sakaiproject.cheftool.JetspeedRunData;
import org.sakaiproject.cheftool.PagedResourceActionII;
import org.sakaiproject.cheftool.PortletConfig;
import org.sakaiproject.cheftool.RunData;
import org.sakaiproject.cheftool.VelocityPortlet;
import org.sakaiproject.component.cover.ComponentManager;
import org.sakaiproject.component.cover.ServerConfigurationService;
import org.sakaiproject.content.api.ContentHostingService;
import org.sakaiproject.content.api.ContentResource;
import org.sakaiproject.content.api.ContentResourceEdit;
import org.sakaiproject.content.api.ContentTypeImageService;
import org.sakaiproject.content.api.FilePickerHelper;
import org.sakaiproject.contentreview.service.ContentReviewService;
import org.sakaiproject.entity.api.Entity;
import org.sakaiproject.entity.api.EntityPropertyNotDefinedException;
import org.sakaiproject.entity.api.EntityPropertyTypeException;
import org.sakaiproject.entity.api.Reference;
import org.sakaiproject.entity.api.ResourceProperties;
import org.sakaiproject.entity.api.ResourcePropertiesEdit;
import org.sakaiproject.entity.cover.EntityManager;
import org.sakaiproject.event.api.Event;
import org.sakaiproject.event.api.EventTrackingService;
import org.sakaiproject.event.api.LearningResourceStoreService;
import org.sakaiproject.event.api.LearningResourceStoreService.LRS_Actor;
import org.sakaiproject.event.api.LearningResourceStoreService.LRS_Object;
import org.sakaiproject.event.api.LearningResourceStoreService.LRS_Statement;
import org.sakaiproject.event.api.LearningResourceStoreService.LRS_Verb;
import org.sakaiproject.event.api.LearningResourceStoreService.LRS_Verb.SAKAI_VERB;
import org.sakaiproject.event.api.NotificationService;
import org.sakaiproject.event.api.SessionState;
import org.sakaiproject.exception.IdInvalidException;
import org.sakaiproject.exception.IdUnusedException;
import org.sakaiproject.exception.InUseException;
import org.sakaiproject.exception.PermissionException;
import org.sakaiproject.exception.ServerOverloadException;
import org.sakaiproject.javax.PagingPosition;
import org.sakaiproject.message.api.MessageHeader;
import org.sakaiproject.scoringservice.api.ScoringAgent;
import org.sakaiproject.scoringservice.api.ScoringComponent;
import org.sakaiproject.scoringservice.api.ScoringService;
import org.sakaiproject.service.gradebook.shared.AssignmentHasIllegalPointsException;
import org.sakaiproject.service.gradebook.shared.CategoryDefinition;
import org.sakaiproject.service.gradebook.shared.ConflictingAssignmentNameException;
import org.sakaiproject.service.gradebook.shared.ConflictingExternalIdException;
import org.sakaiproject.service.gradebook.shared.GradebookExternalAssessmentService;
import org.sakaiproject.service.gradebook.shared.GradebookNotFoundException;
import org.sakaiproject.service.gradebook.shared.GradebookService;
import org.sakaiproject.site.api.Group;
import org.sakaiproject.site.api.Site;
import org.sakaiproject.site.api.ToolConfiguration;
import org.sakaiproject.site.cover.SiteService;
import org.sakaiproject.taggable.api.TaggingHelperInfo;
import org.sakaiproject.taggable.api.TaggingManager;
import org.sakaiproject.taggable.api.TaggingProvider;
import org.sakaiproject.time.api.Time;
import org.sakaiproject.time.api.TimeBreakdown;
import org.sakaiproject.time.cover.TimeService;
import org.sakaiproject.tool.api.Session;
import org.sakaiproject.tool.api.Tool;
import org.sakaiproject.tool.api.ToolSession;
import org.sakaiproject.tool.cover.SessionManager;
import org.sakaiproject.tool.cover.ToolManager;
import org.sakaiproject.user.api.User;
import org.sakaiproject.user.api.UserNotDefinedException;
import org.sakaiproject.user.cover.UserDirectoryService;
import org.sakaiproject.util.FileItem;
import org.sakaiproject.util.FormattedText;
import org.sakaiproject.util.ParameterParser;
import org.sakaiproject.util.ResourceLoader;
import org.sakaiproject.util.SortedIterator;
import org.sakaiproject.util.StringUtil;
import org.sakaiproject.util.Validator;

/**
 * <p>
 * AssignmentAction is the action class for the assignment tool.
 * </p>
 */
public class AssignmentAction extends PagedResourceActionII {
    private static ResourceLoader rb = new ResourceLoader("assignment");

    /** Our logger. */
    private static Log M_log = LogFactory.getLog(AssignmentAction.class);

    private static final String ASSIGNMENT_TOOL_ID = "sakai.assignment.grades";

    private static final Boolean allowReviewService = ServerConfigurationService
            .getBoolean("assignment.useContentReview", false);
    private static final Boolean allowPeerAssessment = ServerConfigurationService
            .getBoolean("assignment.usePeerAssessment", true);

    /** Is the review service available? */
    //Peer Assessment
    private static final String NEW_ASSIGNMENT_USE_PEER_ASSESSMENT = "new_assignment_use_peer_assessment";
    private static final String NEW_ASSIGNMENT_ADDITIONAL_OPTIONS = "new_assignment_additional_options";
    private static final String NEW_ASSIGNMENT_PEERPERIODMONTH = "new_assignment_peerperiodmonth";
    private static final String NEW_ASSIGNMENT_PEERPERIODDAY = "new_assignment_peerperiodday";
    private static final String NEW_ASSIGNMENT_PEERPERIODYEAR = "new_assignment_peerperiodyear";
    private static final String NEW_ASSIGNMENT_PEERPERIODHOUR = "new_assignment_peerperiodhour";
    private static final String NEW_ASSIGNMENT_PEERPERIODMIN = "new_assignment_peerperiodmin";
    private static final String NEW_ASSIGNMENT_PEER_ASSESSMENT_ANON_EVAL = "new_assignment_peer_assessment_anon_eval";
    private static final String NEW_ASSIGNMENT_PEER_ASSESSMENT_STUDENT_VIEW_REVIEWS = "new_assignment_peer_assessment_student_view_review";
    private static final String NEW_ASSIGNMENT_PEER_ASSESSMENT_NUM_REVIEWS = "new_assignment_peer_assessment_num_reviews";
    private static final String NEW_ASSIGNMENT_PEER_ASSESSMENT_INSTRUCTIONS = "new_assignment_peer_assessment_instructions";

    private static final String NEW_ASSIGNMENT_USE_REVIEW_SERVICE = "new_assignment_use_review_service";

    private static final String NEW_ASSIGNMENT_ALLOW_STUDENT_VIEW = "new_assignment_allow_student_view";
    private static final String NEW_ASSIGNMENT_REVIEW_SERVICE_SUBMIT_RADIO = "submit_papers_to";
    private static final String NEW_ASSIGNMENT_REVIEW_SERVICE_SUBMIT_NONE = "0";
    private static final String NEW_ASSIGNMENT_REVIEW_SERVICE_SUBMIT_STANDARD = "1";
    private static final String NEW_ASSIGNMENT_REVIEW_SERVICE_SUBMIT_INSITUTION = "2";
    // When to generate reports
    // although the service allows for a value of "1" --> Generate report immediately but overwrite until due date,
    // this doesn't make sense for assignment2. We limit the UI to 0 - Immediately
    // or 2 - On Due Date
    private static final String NEW_ASSIGNMENT_REVIEW_SERVICE_REPORT_RADIO = "report_gen_speed";
    private static final String NEW_ASSIGNMENT_REVIEW_SERVICE_REPORT_IMMEDIATELY = "0";
    private static final String NEW_ASSIGNMENT_REVIEW_SERVICE_REPORT_DUE = "2";
    private static final String NEW_ASSIGNMENT_REVIEW_SERVICE_CHECK_TURNITIN = "s_paper_check";
    private static final String NEW_ASSIGNMENT_REVIEW_SERVICE_CHECK_INTERNET = "internet_check";
    private static final String NEW_ASSIGNMENT_REVIEW_SERVICE_CHECK_PUB = "journal_check";
    private static final String NEW_ASSIGNMENT_REVIEW_SERVICE_CHECK_INSTITUTION = "institution_check";
    private static final String NEW_ASSIGNMENT_REVIEW_SERVICE_EXCLUDE_BIBLIOGRAPHIC = "exclude_biblio";
    private static final String NEW_ASSIGNMENT_REVIEW_SERVICE_EXCLUDE_QUOTED = "exclude_quoted";
    private static final String NEW_ASSIGNMENT_REVIEW_SERVICE_EXCLUDE_SMALL_MATCHES = "exclude_smallmatches";
    private static final String NEW_ASSIGNMENT_REVIEW_SERVICE_EXCLUDE_TYPE = "exclude_type";
    private static final String NEW_ASSIGNMENT_REVIEW_SERVICE_EXCLUDE_VALUE = "exclude_value";

    /** The attachments */
    private static final String ATTACHMENTS = "Assignment.attachments";
    private static final String ATTACHMENTS_FOR = "Assignment.attachments_for";

    /** The property name associated with Groups that are Sections **/
    private static final String GROUP_SECTION_PROPERTY = "sections_category";

    /** The content type image lookup service in the State. */
    private static final String STATE_CONTENT_TYPE_IMAGE_SERVICE = "Assignment.content_type_image_service";

    /** The calendar service in the State. */
    private static final String STATE_CALENDAR_SERVICE = "Assignment.calendar_service";

    /** The announcement service in the State. */
    private static final String STATE_ANNOUNCEMENT_SERVICE = "Assignment.announcement_service";

    /** The calendar object */
    private static final String CALENDAR = "calendar";

    /** Additional calendar service */
    private static final String ADDITIONAL_CALENDAR = "additonal_calendar";

    /** The calendar tool */
    private static final String CALENDAR_TOOL_EXIST = "calendar_tool_exisit";

    /** Additional calendar tool */
    private static final String ADDITIONAL_CALENDAR_TOOL_READY = "additional_calendar_tool_ready";

    /** The announcement tool */
    private static final String ANNOUNCEMENT_TOOL_EXIST = "announcement_tool_exist";

    /** The announcement channel */
    private static final String ANNOUNCEMENT_CHANNEL = "announcement_channel";

    /** The state mode */
    private static final String STATE_MODE = "Assignment.mode";

    /** The context string */
    private static final String STATE_CONTEXT_STRING = "Assignment.context_string";

    /** The user */
    private static final String STATE_USER = "Assignment.user";

    /** The submitter */
    private static final String STATE_SUBMITTER = "Assignment.submitter";

    // SECTION MOD
    /** Used to keep track of the section info not currently being used. */
    private static final String STATE_SECTION_STRING = "Assignment.section_string";

    /** **************************** sort assignment ********************** */
    /** state sort * */
    private static final String SORTED_BY = "Assignment.sorted_by";

    /** state sort ascendingly * */
    private static final String SORTED_ASC = "Assignment.sorted_asc";

    /** default sorting */
    private static final String SORTED_BY_DEFAULT = "default";

    /** sort by assignment title */
    private static final String SORTED_BY_TITLE = "title";

    /** sort by assignment section */
    private static final String SORTED_BY_SECTION = "section";

    /** sort by assignment due date */
    private static final String SORTED_BY_DUEDATE = "duedate";

    /** sort by assignment open date */
    private static final String SORTED_BY_OPENDATE = "opendate";

    /** sort by assignment status */
    private static final String SORTED_BY_ASSIGNMENT_STATUS = "assignment_status";

    /** sort by assignment submission status */
    private static final String SORTED_BY_SUBMISSION_STATUS = "submission_status";

    /** sort by assignment number of submissions */
    private static final String SORTED_BY_NUM_SUBMISSIONS = "num_submissions";

    /** sort by assignment number of ungraded submissions */
    private static final String SORTED_BY_NUM_UNGRADED = "num_ungraded";

    /** sort by assignment submission grade */
    private static final String SORTED_BY_GRADE = "grade";

    /** sort by assignment maximun grade available */
    private static final String SORTED_BY_MAX_GRADE = "max_grade";

    /** sort by assignment range */
    private static final String SORTED_BY_FOR = "for";

    /** sort by group title */
    private static final String SORTED_BY_GROUP_TITLE = "group_title";

    /** sort by group description */
    private static final String SORTED_BY_GROUP_DESCRIPTION = "group_description";

    /** *************************** sort submission in instructor grade view *********************** */
    /** state sort submission* */
    private static final String SORTED_GRADE_SUBMISSION_BY = "Assignment.grade_submission_sorted_by";

    /** state sort submission ascendingly * */
    private static final String SORTED_GRADE_SUBMISSION_ASC = "Assignment.grade_submission_sorted_asc";

    /** state sort submission by submitters last name * */
    private static final String SORTED_GRADE_SUBMISSION_BY_LASTNAME = "sorted_grade_submission_by_lastname";

    /** state sort submission by submit time * */
    private static final String SORTED_GRADE_SUBMISSION_BY_SUBMIT_TIME = "sorted_grade_submission_by_submit_time";

    /** state sort submission by submission status * */
    private static final String SORTED_GRADE_SUBMISSION_BY_STATUS = "sorted_grade_submission_by_status";

    /** state sort submission by submission grade * */
    private static final String SORTED_GRADE_SUBMISSION_BY_GRADE = "sorted_grade_submission_by_grade";

    /** state sort submission by submission released * */
    private static final String SORTED_GRADE_SUBMISSION_BY_RELEASED = "sorted_grade_submission_by_released";

    /** state sort submissuib by content review score **/
    private static final String SORTED_GRADE_SUBMISSION_CONTENTREVIEW = "sorted_grade_submission_by_contentreview";

    /** *************************** sort submission *********************** */
    /** state sort submission* */
    private static final String SORTED_SUBMISSION_BY = "Assignment.submission_sorted_by";

    /** state sort submission ascendingly * */
    private static final String SORTED_SUBMISSION_ASC = "Assignment.submission_sorted_asc";

    /** state sort submission by submitters last name * */
    private static final String SORTED_SUBMISSION_BY_LASTNAME = "sorted_submission_by_lastname";

    /** state sort submission by submit time * */
    private static final String SORTED_SUBMISSION_BY_SUBMIT_TIME = "sorted_submission_by_submit_time";

    /** state sort submission by submission grade * */
    private static final String SORTED_SUBMISSION_BY_GRADE = "sorted_submission_by_grade";

    /** state sort submission by submission status * */
    private static final String SORTED_SUBMISSION_BY_STATUS = "sorted_submission_by_status";

    /** state sort submission by submission released * */
    private static final String SORTED_SUBMISSION_BY_RELEASED = "sorted_submission_by_released";

    /** state sort submission by assignment title */
    private static final String SORTED_SUBMISSION_BY_ASSIGNMENT = "sorted_submission_by_assignment";

    /** state sort submission by max grade */
    private static final String SORTED_SUBMISSION_BY_MAX_GRADE = "sorted_submission_by_max_grade";

    /*********************** Sort by user sort name *****************************************/
    private static final String SORTED_USER_BY_SORTNAME = "sorted_user_by_sortname";

    /** ******************** student's view assignment submission ****************************** */
    /** the assignment object been viewing * */
    private static final String VIEW_SUBMISSION_ASSIGNMENT_REFERENCE = "Assignment.view_submission_assignment_reference";

    /** the submission text to the assignment * */
    private static final String VIEW_SUBMISSION_TEXT = "Assignment.view_submission_text";

    /** the submission answer to Honor Pledge * */
    private static final String VIEW_SUBMISSION_HONOR_PLEDGE_YES = "Assignment.view_submission_honor_pledge_yes";

    /** ***************** student's preview of submission *************************** */
    /** the assignment id * */
    private static final String PREVIEW_SUBMISSION_ASSIGNMENT_REFERENCE = "preview_submission_assignment_reference";

    /** the submission text * */
    private static final String PREVIEW_SUBMISSION_TEXT = "preview_submission_text";

    /** the submission honor pledge answer * */
    private static final String PREVIEW_SUBMISSION_HONOR_PLEDGE_YES = "preview_submission_honor_pledge_yes";

    /** the submission attachments * */
    private static final String PREVIEW_SUBMISSION_ATTACHMENTS = "preview_attachments";

    /** the flag indicate whether the to show the student view or not */
    private static final String PREVIEW_ASSIGNMENT_STUDENT_VIEW_HIDE_FLAG = "preview_assignment_student_view_hide_flag";

    /** the flag indicate whether the to show the assignment info or not */
    private static final String PREVIEW_ASSIGNMENT_ASSIGNMENT_HIDE_FLAG = "preview_assignment_assignment_hide_flag";

    /** the assignment id */
    private static final String PREVIEW_ASSIGNMENT_ASSIGNMENT_ID = "preview_assignment_assignment_id";

    /** the assignment content id */
    private static final String PREVIEW_ASSIGNMENT_ASSIGNMENTCONTENT_ID = "preview_assignment_assignmentcontent_id";

    /** ************** view assignment ***************************************** */
    /** the hide assignment flag in the view assignment page * */
    private static final String VIEW_ASSIGNMENT_HIDE_ASSIGNMENT_FLAG = "view_assignment_hide_assignment_flag";

    /** the hide student view flag in the view assignment page * */
    private static final String VIEW_ASSIGNMENT_HIDE_STUDENT_VIEW_FLAG = "view_assignment_hide_student_view_flag";

    /** ******************* instructor's view assignment ***************************** */
    private static final String VIEW_ASSIGNMENT_ID = "view_assignment_id";

    /** ******************* instructor's edit assignment ***************************** */
    private static final String EDIT_ASSIGNMENT_ID = "edit_assignment_id";

    /** ******************* instructor's delete assignment ids ***************************** */
    private static final String DELETE_ASSIGNMENT_IDS = "delete_assignment_ids";

    /** ******************* flags controls the grade assignment page layout ******************* */
    private static final String GRADE_ASSIGNMENT_EXPAND_FLAG = "grade_assignment_expand_flag";

    private static final String GRADE_SUBMISSION_EXPAND_FLAG = "grade_submission_expand_flag";

    private static final String GRADE_NO_SUBMISSION_DEFAULT_GRADE = "grade_no_submission_default_grade";

    /** ******************* instructor's grade submission ***************************** */
    private static final String GRADE_SUBMISSION_ASSIGNMENT_ID = "grade_submission_assignment_id";

    private static final String GRADE_SUBMISSION_SUBMISSION_ID = "grade_submission_submission_id";

    private static final String GRADE_SUBMISSION_FEEDBACK_COMMENT = "grade_submission_feedback_comment";

    private static final String GRADE_SUBMISSION_FEEDBACK_TEXT = "grade_submission_feedback_text";

    private static final String GRADE_SUBMISSION_FEEDBACK_ATTACHMENT = "grade_submission_feedback_attachment";

    private static final String GRADE_SUBMISSION_GRADE = "grade_submission_grade";

    private static final String GRADE_SUBMISSION_ASSIGNMENT_EXPAND_FLAG = "grade_submission_assignment_expand_flag";

    private static final String GRADE_SUBMISSION_ALLOW_RESUBMIT = "grade_submission_allow_resubmit";

    private static final String GRADE_SUBMISSION_DONE = "grade_submission_done";
    private static final String GRADE_SUBMISSION_SUBMIT = "grade_submission_submit";

    /** ******************* instructor's export assignment ***************************** */
    private static final String EXPORT_ASSIGNMENT_REF = "export_assignment_ref";

    /**
     * Is review service enabled? 
     */
    private static final String ENABLE_REVIEW_SERVICE = "enable_review_service";

    private static final String EXPORT_ASSIGNMENT_ID = "export_assignment_id";

    /** ****************** instructor's new assignment ****************************** */
    private static final String NEW_ASSIGNMENT_TITLE = "new_assignment_title";

    // assignment order for default view
    private static final String NEW_ASSIGNMENT_ORDER = "new_assignment_order";

    private static final String NEW_ASSIGNMENT_GROUP_SUBMIT = "new_assignment_group_submit";

    // open date
    private static final String NEW_ASSIGNMENT_OPENMONTH = "new_assignment_openmonth";

    private static final String NEW_ASSIGNMENT_OPENDAY = "new_assignment_openday";

    private static final String NEW_ASSIGNMENT_OPENYEAR = "new_assignment_openyear";

    private static final String NEW_ASSIGNMENT_OPENHOUR = "new_assignment_openhour";

    private static final String NEW_ASSIGNMENT_OPENMIN = "new_assignment_openmin";

    // visible date
    private static final String NEW_ASSIGNMENT_VISIBLEMONTH = "new_assignment_visiblemonth";

    private static final String NEW_ASSIGNMENT_VISIBLEDAY = "new_assignment_visibleday";

    private static final String NEW_ASSIGNMENT_VISIBLEYEAR = "new_assignment_visibleyear";

    private static final String NEW_ASSIGNMENT_VISIBLEHOUR = "new_assignment_visiblehour";

    private static final String NEW_ASSIGNMENT_VISIBLEMIN = "new_assignment_visiblemin";

    private static final String NEW_ASSIGNMENT_VISIBLETOGGLE = "new_assignment_visibletoggle";

    // due date
    private static final String NEW_ASSIGNMENT_DUEMONTH = "new_assignment_duemonth";

    private static final String NEW_ASSIGNMENT_DUEDAY = "new_assignment_dueday";

    private static final String NEW_ASSIGNMENT_DUEYEAR = "new_assignment_dueyear";

    private static final String NEW_ASSIGNMENT_DUEHOUR = "new_assignment_duehour";

    private static final String NEW_ASSIGNMENT_DUEMIN = "new_assignment_duemin";

    private static final String NEW_ASSIGNMENT_PAST_DUE_DATE = "new_assignment_past_due_date";

    // close date
    private static final String NEW_ASSIGNMENT_ENABLECLOSEDATE = "new_assignment_enableclosedate";

    private static final String NEW_ASSIGNMENT_CLOSEMONTH = "new_assignment_closemonth";

    private static final String NEW_ASSIGNMENT_CLOSEDAY = "new_assignment_closeday";

    private static final String NEW_ASSIGNMENT_CLOSEYEAR = "new_assignment_closeyear";

    private static final String NEW_ASSIGNMENT_CLOSEHOUR = "new_assignment_closehour";

    private static final String NEW_ASSIGNMENT_CLOSEMIN = "new_assignment_closemin";

    private static final String NEW_ASSIGNMENT_ATTACHMENT = "new_assignment_attachment";

    private static final String NEW_ASSIGNMENT_SECTION = "new_assignment_section";

    private static final String NEW_ASSIGNMENT_SUBMISSION_TYPE = "new_assignment_submission_type";

    private static final String NEW_ASSIGNMENT_CATEGORY = "new_assignment_category";

    private static final String NEW_ASSIGNMENT_GRADE_TYPE = "new_assignment_grade_type";

    private static final String NEW_ASSIGNMENT_GRADE_POINTS = "new_assignment_grade_points";

    private static final String NEW_ASSIGNMENT_DESCRIPTION = "new_assignment_instructions";

    private static final String NEW_ASSIGNMENT_DUE_DATE_SCHEDULED = "new_assignment_due_date_scheduled";

    private static final String NEW_ASSIGNMENT_OPEN_DATE_ANNOUNCED = "new_assignment_open_date_announced";

    private static final String NEW_ASSIGNMENT_CHECK_ADD_HONOR_PLEDGE = "new_assignment_check_add_honor_pledge";

    private static final String NEW_ASSIGNMENT_CHECK_HIDE_DUE_DATE = "new_assignment_check_hide_due_date";

    private static final String NEW_ASSIGNMENT_FOCUS = "new_assignment_focus";

    private static final String NEW_ASSIGNMENT_DESCRIPTION_EMPTY = "new_assignment_description_empty";

    private static final String NEW_ASSIGNMENT_ADD_TO_GRADEBOOK = "new_assignment_add_to_gradebook";

    private static final String NEW_ASSIGNMENT_RANGE = "new_assignment_range";

    private static final String NEW_ASSIGNMENT_GROUPS = "new_assignment_groups";

    private static final String VIEW_SUBMISSION_GROUP = "view_submission_group";
    private static final String VIEW_SUBMISSION_ORIGINAL_GROUP = "view_submission_original_group";

    private static final String NEW_ASSIGNMENT_PAST_CLOSE_DATE = "new_assignment_past_close_date";

    /*************************** assignment model answer attributes *************************/
    private static final String NEW_ASSIGNMENT_MODEL_ANSWER = "new_assignment_model_answer";
    private static final String NEW_ASSIGNMENT_MODEL_ANSWER_TEXT = "new_assignment_model_answer_text";
    private static final String NEW_ASSIGNMENT_MODEL_SHOW_TO_STUDENT = "new_assignment_model_answer_show_to_student";
    private static final String NEW_ASSIGNMENT_MODEL_ANSWER_ATTACHMENT = "new_assignment_model_answer_attachment";

    /**************************** assignment year range *************************/
    private static final String NEW_ASSIGNMENT_YEAR_RANGE_FROM = "new_assignment_year_range_from";
    private static final String NEW_ASSIGNMENT_YEAR_RANGE_TO = "new_assignment_year_range_to";

    // submission level of resubmit due time
    private static final String ALLOW_RESUBMIT_CLOSEMONTH = "allow_resubmit_closeMonth";
    private static final String ALLOW_RESUBMIT_CLOSEDAY = "allow_resubmit_closeDay";
    private static final String ALLOW_RESUBMIT_CLOSEYEAR = "allow_resubmit_closeYear";
    private static final String ALLOW_RESUBMIT_CLOSEHOUR = "allow_resubmit_closeHour";
    private static final String ALLOW_RESUBMIT_CLOSEMIN = "allow_resubmit_closeMin";

    private static final String ATTACHMENTS_MODIFIED = "attachments_modified";

    /** **************************** instructor's view student submission ***************** */
    // the show/hide table based on member id
    private static final String STUDENT_LIST_SHOW_TABLE = "STUDENT_LIST_SHOW_TABLE";

    /** **************************** student view grade submission id *********** */
    private static final String VIEW_GRADE_SUBMISSION_ID = "view_grade_submission_id";

    // alert for grade exceeds max grade setting
    private static final String GRADE_GREATER_THAN_MAX_ALERT = "grade_greater_than_max_alert";

    /** **************************** modes *************************** */
    /** The list view of assignments */
    private static final String MODE_LIST_ASSIGNMENTS = "lisofass1"; // set in velocity template

    /** The student view of an assignment submission */
    private static final String MODE_STUDENT_VIEW_SUBMISSION = "Assignment.mode_view_submission";

    /** The student view of an assignment submission confirmation */
    private static final String MODE_STUDENT_VIEW_SUBMISSION_CONFIRMATION = "Assignment.mode_view_submission_confirmation";

    /** The student preview of an assignment submission */
    private static final String MODE_STUDENT_PREVIEW_SUBMISSION = "Assignment.mode_student_preview_submission";

    /** The student view of graded submission */
    private static final String MODE_STUDENT_VIEW_GRADE = "Assignment.mode_student_view_grade";

    /** The student view of graded submission */
    private static final String MODE_STUDENT_VIEW_GRADE_PRIVATE = "Assignment.mode_student_view_grade_private";

    /** The student view of a group submission error (user is in multiple groups */
    private static final String MODE_STUDENT_VIEW_GROUP_ERROR = "Assignment.mode_student_view_group_error";

    /** The student view of assignments */
    private static final String MODE_STUDENT_VIEW_ASSIGNMENT = "Assignment.mode_student_view_assignment";

    /** The instructor view of creating a new assignment or editing an existing one */
    private static final String MODE_INSTRUCTOR_NEW_EDIT_ASSIGNMENT = "Assignment.mode_instructor_new_edit_assignment";

    /** The instructor view to reorder assignments */
    private static final String MODE_INSTRUCTOR_REORDER_ASSIGNMENT = "reorder";

    /** The instructor view to delete an assignment */
    private static final String MODE_INSTRUCTOR_DELETE_ASSIGNMENT = "Assignment.mode_instructor_delete_assignment";

    /** The instructor view to grade an assignment */
    private static final String MODE_INSTRUCTOR_GRADE_ASSIGNMENT = "Assignment.mode_instructor_grade_assignment";

    /** The instructor view to grade a submission */
    private static final String MODE_INSTRUCTOR_GRADE_SUBMISSION = "Assignment.mode_instructor_grade_submission";

    /** The instructor view of preview grading a submission */
    private static final String MODE_INSTRUCTOR_PREVIEW_GRADE_SUBMISSION = "Assignment.mode_instructor_preview_grade_submission";

    /** The instructor preview of one assignment */
    private static final String MODE_INSTRUCTOR_PREVIEW_ASSIGNMENT = "Assignment.mode_instructor_preview_assignments";

    /** The instructor view of one assignment */
    private static final String MODE_INSTRUCTOR_VIEW_ASSIGNMENT = "Assignment.mode_instructor_view_assignments";

    /** The instructor view to list students of an assignment */
    private static final String MODE_INSTRUCTOR_VIEW_STUDENTS_ASSIGNMENT = "lisofass2"; // set in velocity template

    /** The instructor view of assignment submission report */
    private static final String MODE_INSTRUCTOR_REPORT_SUBMISSIONS = "grarep"; // set in velocity template

    /** The instructor view of download all file */
    private static final String MODE_INSTRUCTOR_DOWNLOAD_ALL = "downloadAll";

    /** The instructor view of uploading all from archive file */
    private static final String MODE_INSTRUCTOR_UPLOAD_ALL = "uploadAll";

    /** The student view of assignment submission report */
    private static final String MODE_STUDENT_VIEW = "stuvie"; // set in velocity template

    /** The option view */
    private static final String MODE_OPTIONS = "options"; // set in velocity template

    /** Review Edit page for students */
    private static final String MODE_STUDENT_REVIEW_EDIT = "Assignment.mode_student_review_edit"; // set in velocity template

    /** ************************* vm names ************************** */
    /** The list view of assignments */
    private static final String TEMPLATE_LIST_ASSIGNMENTS = "_list_assignments";

    /** The student view of assignment */
    private static final String TEMPLATE_STUDENT_VIEW_ASSIGNMENT = "_student_view_assignment";

    /** The student view of showing an assignment submission */
    private static final String TEMPLATE_STUDENT_VIEW_SUBMISSION = "_student_view_submission";

    /** The student view of showing a group assignment grouping error */
    private static final String TEMPLATE_STUDENT_VIEW_GROUP_ERROR = "_student_view_group_error";

    /** The student view of an assignment submission confirmation */
    private static final String TEMPLATE_STUDENT_VIEW_SUBMISSION_CONFIRMATION = "_student_view_submission_confirmation";

    /** The student preview an assignment submission */
    private static final String TEMPLATE_STUDENT_PREVIEW_SUBMISSION = "_student_preview_submission";

    /** The student view of graded submission */
    private static final String TEMPLATE_STUDENT_VIEW_GRADE = "_student_view_grade";

    /** The instructor view to create a new assignment or edit an existing one */
    private static final String TEMPLATE_INSTRUCTOR_NEW_EDIT_ASSIGNMENT = "_instructor_new_edit_assignment";

    /** The instructor view to reorder the default assignments */
    private static final String TEMPLATE_INSTRUCTOR_REORDER_ASSIGNMENT = "_instructor_reorder_assignment";

    /** The instructor view to edit assignment */
    private static final String TEMPLATE_INSTRUCTOR_DELETE_ASSIGNMENT = "_instructor_delete_assignment";

    /** The instructor view to edit assignment */
    private static final String TEMPLATE_INSTRUCTOR_GRADE_SUBMISSION = "_instructor_grading_submission";

    /** The instructor preview to edit assignment */
    private static final String TEMPLATE_INSTRUCTOR_PREVIEW_GRADE_SUBMISSION = "_instructor_preview_grading_submission";

    /** The instructor view to grade the assignment */
    private static final String TEMPLATE_INSTRUCTOR_GRADE_ASSIGNMENT = "_instructor_list_submissions";

    /** The instructor preview of assignment */
    private static final String TEMPLATE_INSTRUCTOR_PREVIEW_ASSIGNMENT = "_instructor_preview_assignment";

    /** The instructor view of assignment */
    private static final String TEMPLATE_INSTRUCTOR_VIEW_ASSIGNMENT = "_instructor_view_assignment";

    /** The instructor view to edit assignment */
    private static final String TEMPLATE_INSTRUCTOR_VIEW_STUDENTS_ASSIGNMENT = "_instructor_student_list_submissions";

    /** The instructor view to assignment submission report */
    private static final String TEMPLATE_INSTRUCTOR_REPORT_SUBMISSIONS = "_instructor_report_submissions";

    /** The instructor view to upload all information from archive file */
    private static final String TEMPLATE_INSTRUCTOR_UPLOAD_ALL = "_instructor_uploadAll";
    /** The student view to edit reviews **/
    private static final String TEMPLATE_STUDENT_REVIEW_EDIT = "_student_review_edit";

    /** The options page */
    private static final String TEMPLATE_OPTIONS = "_options";

    /** The opening mark comment */
    private static final String COMMENT_OPEN = "{{";

    /** The closing mark for comment */
    private static final String COMMENT_CLOSE = "}}";

    /** The selected view */
    private static final String STATE_SELECTED_VIEW = "state_selected_view";

    /** The configuration choice of with grading option or not */
    private static final String WITH_GRADES = "with_grades";

    /** The configuration choice of showing or hiding the number of submissions column  */
    private static final String SHOW_NUMBER_SUBMISSION_COLUMN = "showNumSubmissionColumn";

    /** The alert flag when doing global navigation from improper mode */
    private static final String ALERT_GLOBAL_NAVIGATION = "alert_global_navigation";

    /** The total list item before paging */
    private static final String STATE_PAGEING_TOTAL_ITEMS = "state_paging_total_items";

    /** is current user allowed to grade assignment? */
    private static final String STATE_ALLOW_GRADE_SUBMISSION = "state_allow_grade_submission";

    /** property for previous feedback attachments **/
    private static final String PROP_SUBMISSION_PREVIOUS_FEEDBACK_ATTACHMENTS = "prop_submission_previous_feedback_attachments";

    /** the user and submission list for list of submissions page */
    private static final String USER_SUBMISSIONS = "user_submissions";

    /** the items for storing the comments and grades for peer assessment **/
    private static final String PEER_ASSESSMENT_ITEMS = "peer_assessment_items";

    private static final String PEER_ASSESSMENT_ASSESSOR_ID = "peer_assessment_assesor_id";

    private static final String PEER_ASSESSMENT_REMOVED_STATUS = "peer_assessment_removed_status";

    /** ************************* Taggable constants ************************** */
    /** identifier of tagging provider that will provide the appropriate helper */
    private static final String PROVIDER_ID = "providerId";

    /** Reference to an activity */
    private static final String ACTIVITY_REF = "activityRef";

    /** Reference to an item */
    private static final String ITEM_REF = "itemRef";

    /** session attribute for list of decorated tagging providers */
    private static final String PROVIDER_LIST = "providerList";

    // whether the choice of emails instructor submission notification is available in the installation
    private static final String ASSIGNMENT_INSTRUCTOR_NOTIFICATIONS = "assignment.instructor.notifications";

    // default for whether or how the instructor receive submission notification emails, none(default)|each|digest
    private static final String ASSIGNMENT_INSTRUCTOR_NOTIFICATIONS_DEFAULT = "assignment.instructor.notifications.default";

    // name for release grade notification
    private static final String ASSIGNMENT_RELEASEGRADE_NOTIFICATION = "assignment.releasegrade.notification";
    private static final String ASSIGNMENT_RELEASERESUBMISSION_NOTIFICATION = "assignment.releasereturn.notification";

    /****************************** Upload all screen ***************************/
    private static final String UPLOAD_ALL_HAS_SUBMISSION_TEXT = "upload_all_has_submission_text";
    private static final String UPLOAD_ALL_HAS_SUBMISSION_ATTACHMENT = "upload_all_has_submission_attachment";
    private static final String UPLOAD_ALL_HAS_GRADEFILE = "upload_all_has_gradefile";
    private static final String UPLOAD_ALL_GRADEFILE_FORMAT = "upload_all_gradefile_format";
    private static final String UPLOAD_ALL_HAS_COMMENTS = "upload_all_has_comments";
    private static final String UPLOAD_ALL_HAS_FEEDBACK_TEXT = "upload_all_has_feedback_text";
    private static final String UPLOAD_ALL_HAS_FEEDBACK_ATTACHMENT = "upload_all_has_feedback_attachment";
    private static final String UPLOAD_ALL_WITHOUT_FOLDERS = "upload_all_without_folders";
    private static final String UPLOAD_ALL_RELEASE_GRADES = "upload_all_release_grades";

    // this is to track whether the site has multiple assignment, hence if true, show the reorder link
    private static final String HAS_MULTIPLE_ASSIGNMENTS = "has_multiple_assignments";

    // view all or grouped submission list
    private static final String VIEW_SUBMISSION_LIST_OPTION = "view_submission_list_option";

    /************************* SAK-17606 - Upload all grades.csv columns ********************/
    private static final int IDX_GRADES_CSV_EID = 1;
    private static final int IDX_GRADES_CSV_GRADE = 5;

    // search string for submission list
    private static final String VIEW_SUBMISSION_SEARCH = "view_submission_search";

    private ContentHostingService m_contentHostingService = null;

    private EventTrackingService m_eventTrackingService = null;

    private NotificationService m_notificationService = null;

    private SecurityService m_securityService = null;

    private AuthzGroupService authzGroupService = null;

    /********************** Supplement item ************************/
    private AssignmentSupplementItemService m_assignmentSupplementItemService = null;
    /******** Model Answer ************/
    private static final String MODELANSWER = "modelAnswer";
    private static final String MODELANSWER_TEXT = "modelAnswer.text";
    private static final String MODELANSWER_SHOWTO = "modelAnswer.showTo";
    private static final String MODELANSWER_ATTACHMENTS = "modelanswer_attachments";
    private static final String MODELANSWER_TO_DELETE = "modelanswer.toDelete";
    /******** Note ***********/
    private static final String NOTE = "note";
    private static final String NOTE_TEXT = "note.text";
    private static final String NOTE_SHAREWITH = "note.shareWith";
    private static final String NOTE_TO_DELETE = "note.toDelete";

    /******** AllPurpose *******/
    private static final String ALLPURPOSE = "allPurpose";
    private static final String ALLPURPOSE_TITLE = "allPurpose.title";
    private static final String ALLPURPOSE_TEXT = "allPurpose.text";
    private static final String ALLPURPOSE_HIDE = "allPurpose.hide";
    private static final String ALLPURPOSE_SHOW_FROM = "allPurpose.show.from";
    private static final String ALLPURPOSE_SHOW_TO = "allPurpose.show.to";
    private static final String ALLPURPOSE_RELEASE_DATE = "allPurpose.releaseDate";
    private static final String ALLPURPOSE_RETRACT_DATE = "allPurpose.retractDate";
    private static final String ALLPURPOSE_ACCESS = "allPurpose.access";
    private static final String ALLPURPOSE_ATTACHMENTS = "allPurpose_attachments";
    private static final String ALLPURPOSE_RELEASE_YEAR = "allPurpose_releaseYear";
    private static final String ALLPURPOSE_RELEASE_MONTH = "allPurpose_releaseMonth";
    private static final String ALLPURPOSE_RELEASE_DAY = "allPurpose_releaseDay";
    private static final String ALLPURPOSE_RELEASE_HOUR = "allPurpose_releaseHour";
    private static final String ALLPURPOSE_RELEASE_MIN = "allPurpose_releaseMin";
    private static final String ALLPURPOSE_RETRACT_YEAR = "allPurpose_retractYear";
    private static final String ALLPURPOSE_RETRACT_MONTH = "allPurpose_retractMonth";
    private static final String ALLPURPOSE_RETRACT_DAY = "allPurpose_retractDay";
    private static final String ALLPURPOSE_RETRACT_HOUR = "allPurpose_retractHour";
    private static final String ALLPURPOSE_RETRACT_MIN = "allPurpose_retractMin";
    private static final String ALLPURPOSE_TO_DELETE = "allPurpose.toDelete";

    private static final String RETURNED_FEEDBACK = "feedback_returned_to_selected_users";

    private static final String OW_FEEDBACK = "feedback_overwritten";

    private static final String SAVED_FEEDBACK = "feedback_saved";

    private static final int INPUT_BUFFER_SIZE = 102400;

    private static final String INVOKE = "invoke_via";
    private static final String INVOKE_BY_LINK = "link";
    private static final String INVOKE_BY_PORTAL = "portal";

    private static final String SUBMISSIONS_SEARCH_ONLY = "submissions_search_only";

    /*************** search related *******************/
    private static final String STATE_SEARCH = "state_search";
    private static final String FORM_SEARCH = "form_search";

    private static final String STATE_DOWNLOAD_URL = "state_download_url";

    /** To know if grade_submission go from view_students_assignment view or not **/
    private static final String FROM_VIEW = "from_view";

    /** SAK-17606 - Property for whether an assignment user anonymous grading (user settable). */
    private static final String NEW_ASSIGNMENT_CHECK_ANONYMOUS_GRADING = "new_assignment_check_anonymous_grading";

    /** Sakai.property for enable/disable anonymous grading */
    private static final String SAK_PROP_ENABLE_ANON_GRADING = "assignment.anon.grading.enabled";

    // SAK-29314
    private boolean nextUngraded = false;
    private boolean prevUngraded = false;
    private boolean nextWithSubmission = false;
    private boolean prevWithSubmission = false;
    private boolean nextUngradedWithSubmission = false;
    private boolean prevUngradedWithSubmission = false;
    private String nextUngradedRef = "";
    private String prevUngradedRef = "";
    private String nextWithSubmissionRef = "";
    private String prevWithSubmissionRef = "";
    private String nextUngradedWithSubmissionRef = "";
    private String prevUngradedWithSubmissionRef = "";
    private final String NO_SUBMISSION = rb.getString("listsub.nosub");
    private static final String FLAG_ON = "on";
    private static final String FLAG_TRUE = "true";
    private static final String FLAG_NEXT = "next";
    private static final String FLAG_PREV = "prev";
    private static final String FLAG_NEXT_UNGRADED = "nextUngraded";
    private static final String FLAG_PREV_UNGRADED = "prevUngraded";
    private static final String FLAG_NEXT_WITH_SUB = "nextWithSubmission";
    private static final String FLAG_PREV_WITH_SUB = "prevWithSubmission";
    private static final String FLAG_NEXT_UNGRADED_WITH_SUB = "nextUngradedWithSubmission";
    private static final String FLAG_PREV_UNGRADED_WITH_SUB = "prevUngradedWithSubmission";
    private static final String STATE_VIEW_SUBS_ONLY = "state_view_submissions_only_selected";
    private static final String CONTEXT_VIEW_SUBS_ONLY = "subsOnlySelected";
    private static final String CONTEXT_NEXT_UNGRADED_SUB_ID = "nextUngradedSubmissionID";
    private static final String CONTEXT_PREV_UNGRADED_SUB_ID = "prevUngradedSubmissionID";
    private static final String CONTEXT_NEXT_WITH_SUB_ID = "nextWithSubmissionID";
    private static final String CONTEXT_PREV_WITH_SUB_ID = "prevWithSubmissionID";
    private static final String CONTEXT_NEXT_UNGRADED_WITH_SUB_ID = "nextUngradedWithSubmissionID";
    private static final String CONTEXT_PREV_UNGRADED_WITH_SUB_ID = "prevUngradedWithSubmissionID";
    private static final String CONTEXT_GO_NEXT_UNGRADED_ENABLED = "goNextUngradedEnabled";
    private static final String CONTEXT_GO_PREV_UNGRADED_ENABLED = "goPrevUngradedEnabled";
    private static final String PARAMS_VIEW_SUBS_ONLY_CHECKBOX = "chkSubsOnly1";

    private AssignmentPeerAssessmentService assignmentPeerAssessmentService;

    public void setAssignmentPeerAssessmentService(
            AssignmentPeerAssessmentService assignmentPeerAssessmentService) {
        this.assignmentPeerAssessmentService = assignmentPeerAssessmentService;
    }

    public String buildLinkedPanelContext(VelocityPortlet portlet, Context context, RunData data,
            SessionState state) {
        state.setAttribute(INVOKE, INVOKE_BY_LINK);
        return buildMainPanelContext(portlet, context, data, state);
    }

    /**
     * central place for dispatching the build routines based on the state name
     */
    public String buildMainPanelContext(VelocityPortlet portlet, Context context, RunData data,
            SessionState state) {
        String template = null;
        context.put("action", "AssignmentAction");

        context.put("tlang", rb);
        context.put("dateFormat", getDateFormatString());
        context.put("cheffeedbackhelper", this);

        String contextString = (String) state.getAttribute(STATE_CONTEXT_STRING);

        // allow add assignment?
        boolean allowAddAssignment = AssignmentService.allowAddAssignment(contextString);
        context.put("allowAddAssignment", Boolean.valueOf(allowAddAssignment));

        Object allowGradeSubmission = state.getAttribute(STATE_ALLOW_GRADE_SUBMISSION);

        // allow update site?
        boolean allowUpdateSite = SiteService.allowUpdateSite((String) state.getAttribute(STATE_CONTEXT_STRING));
        context.put("allowUpdateSite", Boolean.valueOf(allowUpdateSite));

        //group related settings
        context.put("siteAccess", Assignment.AssignmentAccess.SITE);
        context.put("groupAccess", Assignment.AssignmentAccess.GROUPED);

        // allow all.groups?
        boolean allowAllGroups = AssignmentService.allowAllGroups(contextString);
        context.put("allowAllGroups", Boolean.valueOf(allowAllGroups));

        //Is the review service allowed?
        Site s = null;
        try {
            s = SiteService.getSite((String) state.getAttribute(STATE_CONTEXT_STRING));
        } catch (IdUnusedException iue) {
            M_log.warn(this + ":buildMainPanelContext: Site not found!" + iue.getMessage());
        }

        // Check whether content review service is enabled, present and enabled for this site
        getContentReviewService();
        context.put("allowReviewService",
                allowReviewService && contentReviewService != null && contentReviewService.isSiteAcceptable(s));

        if (allowReviewService && contentReviewService != null && contentReviewService.isSiteAcceptable(s)) {
            //put the review service stings in context
            String reviewServiceName = contentReviewService.getServiceName();
            String reviewServiceTitle = rb.getFormattedMessage("review.title", new Object[] { reviewServiceName });
            String reviewServiceUse = rb.getFormattedMessage("review.use", new Object[] { reviewServiceName });
            String reviewServiceNonElectronic1 = rb.getFormattedMessage("review.switch.ne.1", reviewServiceName);
            String reviewServiceNonElectronic2 = rb.getFormattedMessage("review.switch.ne.2", reviewServiceName);
            context.put("reviewServiceName", reviewServiceName);
            context.put("reviewServiceTitle", reviewServiceTitle);
            context.put("reviewServiceUse", reviewServiceUse);
            context.put("reviewIndicator",
                    rb.getFormattedMessage("review.contentReviewIndicator", new Object[] { reviewServiceName }));
            context.put("reviewSwitchNe1", reviewServiceNonElectronic1);
            context.put("reviewSwitchNe2", reviewServiceNonElectronic2);
        }

        //Peer Assessment
        context.put("allowPeerAssessment", allowPeerAssessment);

        // grading option
        context.put("withGrade", state.getAttribute(WITH_GRADES));

        // the grade type table
        context.put("gradeTypeTable", gradeTypeTable());

        // set the allowSubmitByInstructor option
        context.put("allowSubmitByInstructor", AssignmentService.getAllowSubmitByInstructor());

        // get the system setting for whether to show the Option tool link or not
        context.put("enableViewOption", ServerConfigurationService.getBoolean("assignment.enableViewOption", true));

        String mode = (String) state.getAttribute(STATE_MODE);

        if (!MODE_LIST_ASSIGNMENTS.equals(mode)) {
            // allow grade assignment?
            if (state.getAttribute(STATE_ALLOW_GRADE_SUBMISSION) == null) {
                state.setAttribute(STATE_ALLOW_GRADE_SUBMISSION, Boolean.FALSE);
            }
            context.put("allowGradeSubmission", state.getAttribute(STATE_ALLOW_GRADE_SUBMISSION));
        }

        if (MODE_LIST_ASSIGNMENTS.equals(mode)) {
            // build the context for the student assignment view
            template = build_list_assignments_context(portlet, context, data, state);
        } else if (MODE_STUDENT_VIEW_ASSIGNMENT.equals(mode)) {
            // the student view of assignment
            template = build_student_view_assignment_context(portlet, context, data, state);
        } else if (MODE_STUDENT_VIEW_GROUP_ERROR.equals(mode)) {
            // disable auto-updates while leaving the list view
            justDelivered(state);

            // build the context for showing group submission error
            template = build_student_view_group_error_context(portlet, context, data, state);
        } else if (MODE_STUDENT_VIEW_SUBMISSION.equals(mode)) {
            // disable auto-updates while leaving the list view
            justDelivered(state);

            // build the context for showing one assignment submission
            template = build_student_view_submission_context(portlet, context, data, state);
        } else if (MODE_STUDENT_VIEW_SUBMISSION_CONFIRMATION.equals(mode)) {
            context.put("site", s);

            // build the context for showing one assignment submission confirmation
            template = build_student_view_submission_confirmation_context(portlet, context, data, state);
        } else if (MODE_STUDENT_PREVIEW_SUBMISSION.equals(mode)) {
            // build the context for showing one assignment submission
            template = build_student_preview_submission_context(portlet, context, data, state);
        } else if (MODE_STUDENT_VIEW_GRADE.equals(mode) || MODE_STUDENT_VIEW_GRADE_PRIVATE.equals(mode)) {
            context.put("site", s);

            // disable auto-updates while leaving the list view
            justDelivered(state);

            if (MODE_STUDENT_VIEW_GRADE_PRIVATE.equals(mode)) {
                context.put("privateView", true);
            }
            // build the context for showing one graded submission
            template = build_student_view_grade_context(portlet, context, data, state);
        } else if (MODE_INSTRUCTOR_NEW_EDIT_ASSIGNMENT.equals(mode)) {
            // allow add assignment?
            boolean allowAddSiteAssignment = AssignmentService.allowAddSiteAssignment(contextString);
            context.put("allowAddSiteAssignment", Boolean.valueOf(allowAddSiteAssignment));

            // disable auto-updates while leaving the list view
            justDelivered(state);

            // build the context for the instructor's create new assignment view
            template = build_instructor_new_edit_assignment_context(portlet, context, data, state);
        } else if (MODE_INSTRUCTOR_DELETE_ASSIGNMENT.equals(mode)) {
            if (state.getAttribute(DELETE_ASSIGNMENT_IDS) != null) {
                // disable auto-updates while leaving the list view
                justDelivered(state);

                // build the context for the instructor's delete assignment
                template = build_instructor_delete_assignment_context(portlet, context, data, state);
            }
        } else if (MODE_INSTRUCTOR_GRADE_ASSIGNMENT.equals(mode)) {
            if (allowGradeSubmission != null && ((Boolean) allowGradeSubmission).booleanValue()) {
                // if allowed for grading, build the context for the instructor's grade assignment
                template = build_instructor_grade_assignment_context(portlet, context, data, state);
            }
        } else if (MODE_INSTRUCTOR_GRADE_SUBMISSION.equals(mode)) {
            context.put("site", s);
            if (allowGradeSubmission != null && ((Boolean) allowGradeSubmission).booleanValue()) {
                // if allowed for grading, disable auto-updates while leaving the list view
                justDelivered(state);

                // build the context for the instructor's grade submission
                template = build_instructor_grade_submission_context(portlet, context, data, state);
            }
        } else if (MODE_INSTRUCTOR_PREVIEW_GRADE_SUBMISSION.equals(mode)) {
            if (allowGradeSubmission != null && ((Boolean) allowGradeSubmission).booleanValue()) {
                // if allowed for grading, build the context for the instructor's preview grade submission
                template = build_instructor_preview_grade_submission_context(portlet, context, data, state);
            }
        } else if (MODE_INSTRUCTOR_PREVIEW_ASSIGNMENT.equals(mode)) {
            // build the context for preview one assignment
            template = build_instructor_preview_assignment_context(portlet, context, data, state);
        } else if (MODE_INSTRUCTOR_VIEW_ASSIGNMENT.equals(mode)) {
            context.put("site", s);
            // disable auto-updates while leaving the list view
            justDelivered(state);

            // build the context for view one assignment
            template = build_instructor_view_assignment_context(portlet, context, data, state);
        } else if (MODE_INSTRUCTOR_VIEW_STUDENTS_ASSIGNMENT.equals(mode)) {
            if (allowGradeSubmission != null && ((Boolean) allowGradeSubmission).booleanValue()) {
                // if allowed for grading, build the context for the instructor's create new assignment view
                template = build_instructor_view_students_assignment_context(portlet, context, data, state);
            }
        } else if (MODE_INSTRUCTOR_REPORT_SUBMISSIONS.equals(mode)) {
            context.put("site", s);
            if (allowGradeSubmission != null && ((Boolean) allowGradeSubmission).booleanValue()) {
                // if allowed for grading, build the context for the instructor's view of report submissions
                template = build_instructor_report_submissions(portlet, context, data, state);
            }
        } else if (MODE_INSTRUCTOR_DOWNLOAD_ALL.equals(mode)) {
            if (allowGradeSubmission != null && ((Boolean) allowGradeSubmission).booleanValue()) {
                // if allowed for grading, build the context for the instructor's view of uploading all info from archive file
                template = build_instructor_download_upload_all(portlet, context, data, state);
            }
        } else if (MODE_INSTRUCTOR_UPLOAD_ALL.equals(mode)) {
            if (allowGradeSubmission != null && ((Boolean) allowGradeSubmission).booleanValue()) {
                // if allowed for grading, build the context for the instructor's view of uploading all info from archive file
                template = build_instructor_download_upload_all(portlet, context, data, state);
            }
        } else if (MODE_INSTRUCTOR_REORDER_ASSIGNMENT.equals(mode)) {
            context.put("site", s);

            // disable auto-updates while leaving the list view
            justDelivered(state);

            // build the context for the instructor's create new assignment view
            template = build_instructor_reorder_assignment_context(portlet, context, data, state);
        } else if (mode.equals(MODE_OPTIONS)) {
            if (allowUpdateSite) {
                // build the options page
                template = build_options_context(portlet, context, data, state);
            }
        } else if (mode.equals(MODE_STUDENT_REVIEW_EDIT)) {
            template = build_student_review_edit_context(portlet, context, data, state);
        }

        if (template == null) {
            // default to student list view
            state.setAttribute(STATE_MODE, MODE_LIST_ASSIGNMENTS);
            template = build_list_assignments_context(portlet, context, data, state);
        }

        // this is a check for seeing if there are any assignments.  The check is used to see if we display a Reorder link in the vm files
        if (state.getAttribute(HAS_MULTIPLE_ASSIGNMENTS) != null) {
            context.put("assignmentscheck", state.getAttribute(HAS_MULTIPLE_ASSIGNMENTS));
        }

        return template;

    } // buildNormalContext

    /**
     * local function for getting assignment object
     * @param assignmentId
     * @param callingFunctionName
     * @param state
     * @return
     */
    private Assignment getAssignment(String assignmentId, String callingFunctionName, SessionState state) {
        Assignment rv = null;
        try {
            Session session = SessionManager.getCurrentSession();
            SecurityAdvisor secAdv = pushSecurityAdvisor(session, "assignment.security.advisor", false);
            SecurityAdvisor contentAdvisor = pushSecurityAdvisor(session, "assignment.content.security.advisor",
                    false);

            rv = AssignmentService.getAssignment(assignmentId);

            m_securityService.popAdvisor(contentAdvisor);
            m_securityService.popAdvisor(secAdv);
        } catch (IdUnusedException e) {
            M_log.warn(this + ":" + callingFunctionName + " " + e.getMessage() + " " + assignmentId);
            addAlert(state, rb.getFormattedMessage("cannotfin_assignment", new Object[] { assignmentId }));
        } catch (PermissionException e) {
            M_log.warn(this + ":" + callingFunctionName + " " + e.getMessage() + " " + assignmentId);
            addAlert(state, rb.getFormattedMessage("youarenot_viewAssignment", new Object[] { assignmentId }));
        }

        return rv;
    }

    /**
     * local function for getting assignment submission object
     * @param submissionId
     * @param callingFunctionName
     * @param state
     * @return
     */
    private AssignmentSubmission getSubmission(String submissionId, String callingFunctionName,
            SessionState state) {
        AssignmentSubmission rv = null;
        try {
            Session session = SessionManager.getCurrentSession();
            SecurityAdvisor secAdv = pushSecurityAdvisor(session, "assignment.grade.security.advisor", false);
            rv = AssignmentService.getSubmission(submissionId);
            m_securityService.popAdvisor(secAdv);
        } catch (IdUnusedException e) {
            M_log.warn(this + ":" + callingFunctionName + " " + e.getMessage() + " " + submissionId);
            addAlert(state, rb.getFormattedMessage("cannotfin_submission", new Object[] { submissionId }));
        } catch (PermissionException e) {
            M_log.warn(this + ":" + callingFunctionName + " " + e.getMessage() + " " + submissionId);
            addAlert(state, rb.getFormattedMessage("youarenot_viewSubmission", new Object[] { submissionId }));
        }

        return rv;
    }

    /**
     * local function for editing assignment submission object
     * @param submissionId
     * @param callingFunctionName
     * @param state
     * @return
     */
    private AssignmentSubmissionEdit editSubmission(String submissionId, String callingFunctionName,
            SessionState state) {
        AssignmentSubmissionEdit rv = null;
        try {
            rv = AssignmentService.editSubmission(submissionId);
        } catch (IdUnusedException e) {
            M_log.warn(this + ":" + callingFunctionName + " " + e.getMessage() + " " + submissionId);
            addAlert(state, rb.getFormattedMessage("cannotfin_submission", new Object[] { submissionId }));
        } catch (PermissionException e) {
            M_log.warn(this + ":" + callingFunctionName + " " + e.getMessage() + " " + submissionId);
            addAlert(state, rb.getFormattedMessage("youarenot_editSubmission", new Object[] { submissionId }));
        } catch (InUseException e) {
            M_log.warn(this + ":" + callingFunctionName + " " + e.getMessage() + " " + submissionId);
            addAlert(state, rb.getFormattedMessage("somelsis_submission", new Object[] { submissionId }));
        }

        return rv;
    }

    /**
     * local function for editing assignment object
     * @param assignmentId
     * @param callingFunctionName
     * @param state
     * @param allowToAdd
     * @return
     */
    private AssignmentEdit editAssignment(String assignmentId, String callingFunctionName, SessionState state,
            boolean allowAdd) {

        AssignmentEdit rv = null;
        if (assignmentId.length() == 0 && allowAdd) {
            // create a new assignment
            try {
                rv = AssignmentService.addAssignment((String) state.getAttribute(STATE_CONTEXT_STRING));
            } catch (PermissionException e) {
                addAlert(state, rb.getString("youarenot_addAssignment"));
                M_log.warn(this + ":" + callingFunctionName + " " + e.getMessage());
            }
        } else {
            try {
                rv = AssignmentService.editAssignment(assignmentId);
            } catch (IdUnusedException e) {
                M_log.warn(this + ":" + callingFunctionName + " " + e.getMessage() + " " + assignmentId);
                addAlert(state, rb.getFormattedMessage("cannotfin_assignment", new Object[] { assignmentId }));
            } catch (PermissionException e) {
                M_log.warn(this + ":" + callingFunctionName + " " + e.getMessage() + " " + assignmentId);
                addAlert(state, rb.getFormattedMessage("youarenot_editAssignment", new Object[] { assignmentId }));
            } catch (InUseException e) {
                M_log.warn(this + ":" + callingFunctionName + " " + e.getMessage() + " " + assignmentId);
                addAlert(state, rb.getFormattedMessage("somelsis_assignment", new Object[] { assignmentId }));
            }
        } // if-else

        return rv;
    }

    /**
     * local function for getting assignment submission object
     * @param submissionId
     * @param callingFunctionName
     * @param state
     * @return
     */
    private AssignmentSubmission getSubmission(String assignmentRef, User user, String callingFunctionName,
            SessionState state) {
        AssignmentSubmission rv = null;
        try {
            rv = AssignmentService.getSubmission(assignmentRef, user);
        } catch (IdUnusedException e) {
            M_log.warn(this + ":build_student_view_submission " + e.getMessage() + " " + assignmentRef + " "
                    + user.getId());
            if (state != null)
                addAlert(state, rb.getFormattedMessage("cannotfin_submission_1",
                        new Object[] { assignmentRef, user.getId() }));

        } catch (PermissionException e) {
            M_log.warn(this + ":" + callingFunctionName + " " + e.getMessage() + " " + assignmentRef + " "
                    + user.getId());
            if (state != null)
                addAlert(state, rb.getFormattedMessage("youarenot_viewSubmission_1",
                        new Object[] { assignmentRef, user.getId() }));
        }

        return rv;
    }

    /**
     * local function for getting assignment submission object for a group id (or is that submitter id instead of group id)
     */
    private AssignmentSubmission getSubmission(String assignmentRef, String group_id, String callingFunctionName,
            SessionState state) {
        AssignmentSubmission rv = null;
        try {

            rv = AssignmentService.getSubmission(assignmentRef, group_id);
        } catch (IdUnusedException e) {
            M_log.warn(this + ":build_student_view_submission " + e.getMessage() + " " + assignmentRef + " "
                    + group_id);
            if (state != null)
                addAlert(state,
                        rb.getFormattedMessage("cannotfin_submission_1", new Object[] { assignmentRef, group_id }));

        } catch (PermissionException e) {
            M_log.warn(
                    this + ":" + callingFunctionName + " " + e.getMessage() + " " + assignmentRef + " " + group_id);
            if (state != null)
                addAlert(state, rb.getFormattedMessage("youarenot_viewSubmission_1",
                        new Object[] { assignmentRef, group_id }));
        }

        return rv;
    }

    /**
     * build the student view of showing an assignment submission
     */
    protected String build_student_view_submission_context(VelocityPortlet portlet, Context context, RunData data,
            SessionState state) {
        String invokedByStatus = (String) state.getAttribute(INVOKE);
        if (invokedByStatus != null) {
            if (invokedByStatus.equalsIgnoreCase(INVOKE_BY_LINK)) {
                context.put("linkInvoked", Boolean.valueOf(true));
            } else {
                context.put("linkInvoked", Boolean.valueOf(false));
            }
        } else {
            context.put("linkInvoked", Boolean.valueOf(false));
        }
        String contextString = (String) state.getAttribute(STATE_CONTEXT_STRING);
        context.put("context", contextString);

        User user = (User) state.getAttribute(STATE_USER);
        M_log.debug(this + " BUILD SUBMISSION FORM WITH USER " + user.getId() + " NAME " + user.getDisplayName());
        String currentAssignmentReference = (String) state.getAttribute(VIEW_SUBMISSION_ASSIGNMENT_REFERENCE);
        Assignment assignment = getAssignment(currentAssignmentReference, "build_student_view_submission_context",
                state);
        AssignmentSubmission s = null;
        boolean newAttachments = false;

        if (assignment != null) {
            context.put("assignment", assignment);
            context.put("canSubmit", Boolean.valueOf(AssignmentService.canSubmit(contextString, assignment)));
            // SAK-26322
            if (assignment.getContent().getAllowReviewService()) {
                context.put("plagiarismNote",
                        rb.getFormattedMessage("gen.yoursubwill", contentReviewService.getServiceName()));
                if (!contentReviewService.allowAllContent()
                        && assignmentSubmissionTypeTakesAttachments(assignment)) {
                    context.put("plagiarismFileTypes",
                            rb.getFormattedMessage("gen.onlythefoll", getContentReviewAcceptedFileTypesMessage()));
                    context.put("content_review_acceptedMimeTypes", getContentReviewAcceptedMimeTypes());
                }
            }
            if (assignment.getContent().getTypeOfSubmission() == Assignment.NON_ELECTRONIC_ASSIGNMENT_SUBMISSION) {
                context.put("nonElectronicType", Boolean.TRUE);
            }

            User submitter = (User) state.getAttribute("student");
            if (submitter == null) {
                submitter = user;
            }
            s = getSubmission(assignment.getReference(), submitter, "build_student_view_submission_context", state);
            List currentAttachments = (List) state.getAttribute(ATTACHMENTS);

            if (s != null) {
                M_log.debug(this + " BUILD SUBMISSION FORM HAS SUBMISSION FOR USER " + s.getSubmitterId() + " NAME "
                        + user.getDisplayName());
                context.put("submission", s);
                if (assignment.isGroup()) {
                    context.put("selectedGroup", s.getSubmitterId());
                    context.put("originalGroup", s.getSubmitterId());
                }

                setScoringAgentProperties(context, assignment, s, false);

                ResourceProperties p = s.getProperties();
                if (p.getProperty(ResourceProperties.PROP_SUBMISSION_PREVIOUS_FEEDBACK_TEXT) != null) {
                    context.put("prevFeedbackText",
                            p.getProperty(ResourceProperties.PROP_SUBMISSION_PREVIOUS_FEEDBACK_TEXT));
                }

                if (p.getProperty(ResourceProperties.PROP_SUBMISSION_PREVIOUS_FEEDBACK_COMMENT) != null) {
                    context.put("prevFeedbackComment",
                            p.getProperty(ResourceProperties.PROP_SUBMISSION_PREVIOUS_FEEDBACK_COMMENT));
                }

                if (p.getProperty(PROP_SUBMISSION_PREVIOUS_FEEDBACK_ATTACHMENTS) != null) {
                    context.put("prevFeedbackAttachments", getPrevFeedbackAttachments(p));
                }

                if (assignment.isGroup()) {
                    context.put("submitterId", s.getSubmitterId());
                    String _grade_override = s.getGradeForUser(UserDirectoryService.getCurrentUser().getId());
                    if (_grade_override != null) {
                        if (assignment.getContext() != null && assignment.getContent().getTypeOfGrade() == 3) {
                            context.put("override",
                                    displayGrade(state, _grade_override, assignment.getContent().getFactor()));
                        } else {
                            context.put("override", _grade_override);
                        }
                    }
                }

                // figure out if attachments have been modified

                // the attachments from the previous submission
                List submittedAttachments = s.getSubmittedAttachments();
                newAttachments = areAttachmentsModified(submittedAttachments, currentAttachments);
            } else {
                // There is no previous submission, attachments are modified if anything has been uploaded
                newAttachments = CollectionUtils.isNotEmpty(currentAttachments);
            }

            // put the resubmit information into context
            assignment_resubmission_option_into_context(context, state);

            if (assignment.isGroup()) {
                context.put("assignmentService", AssignmentService.getInstance());
                // get current site
                Collection<Group> groups = null;
                Site st = null;
                try {
                    st = SiteService.getSite((String) state.getAttribute(STATE_CONTEXT_STRING));
                    context.put("site", st);
                    groups = getGroupsWithUser(user.getId(), assignment, st);
                    checkForGroupsInMultipleGroups(assignment, groups, state,
                            rb.getString("group.user.multiple.warning"));
                    context.put("group_size", String.valueOf(groups.size()));
                    context.put("groups", new SortedIterator(groups.iterator(),
                            new AssignmentComparator(state, SORTED_BY_GROUP_TITLE, Boolean.TRUE.toString())));
                    if (state.getAttribute(VIEW_SUBMISSION_GROUP) != null) {
                        context.put("selectedGroup", (String) state.getAttribute(VIEW_SUBMISSION_GROUP));
                        if (M_log.isDebugEnabled())
                            M_log.debug(this + ":buildStudentViewSubmissionContext: VIEW_SUBMISSION_GROUP "
                                    + (String) state.getAttribute(VIEW_SUBMISSION_GROUP));
                    }
                    if (state.getAttribute(VIEW_SUBMISSION_ORIGINAL_GROUP) != null) {
                        context.put("originalGroup", (String) state.getAttribute(VIEW_SUBMISSION_ORIGINAL_GROUP));
                        if (M_log.isDebugEnabled())
                            M_log.debug(this + ":buildStudentViewSubmissionContext: VIEW_SUBMISSION_ORIGINAL_GROUP "
                                    + (String) state.getAttribute(VIEW_SUBMISSION_ORIGINAL_GROUP));
                    }
                } catch (IdUnusedException iue) {
                    M_log.warn(this + ":buildStudentViewSubmissionContext: Site not found!" + iue.getMessage());
                }
            }

            // can the student view model answer or not
            canViewAssignmentIntoContext(context, assignment, s);
        }

        TaggingManager taggingManager = (TaggingManager) ComponentManager
                .get("org.sakaiproject.taggable.api.TaggingManager");
        if (taggingManager.isTaggable() && assignment != null) {
            addProviders(context, state);
            addActivity(context, assignment);
            context.put("taggable", Boolean.valueOf(true));
        }

        // name value pairs for the vm
        context.put("name_submission_text", VIEW_SUBMISSION_TEXT);
        context.put("value_submission_text", state.getAttribute(VIEW_SUBMISSION_TEXT));
        context.put("name_submission_honor_pledge_yes", VIEW_SUBMISSION_HONOR_PLEDGE_YES);
        context.put("value_submission_honor_pledge_yes", state.getAttribute(VIEW_SUBMISSION_HONOR_PLEDGE_YES));
        context.put("honor_pledge_text",
                ServerConfigurationService.getString("assignment.honor.pledge", rb.getString("gen.honple2")));
        context.put("attachments", stripInvisibleAttachments(state.getAttribute(ATTACHMENTS)));
        context.put("new_attachments", newAttachments);
        context.put("userDirectoryService", UserDirectoryService.getInstance());

        context.put("contentTypeImageService", state.getAttribute(STATE_CONTENT_TYPE_IMAGE_SERVICE));
        context.put("currentTime", TimeService.newTime());

        // SAK-21525 - Groups were not being queried for authz
        boolean allowSubmit = AssignmentService
                .allowAddSubmissionCheckGroups((String) state.getAttribute(STATE_CONTEXT_STRING), assignment);
        if (!allowSubmit) {
            addAlert(state, rb.getString("not_allowed_to_submit"));
        }
        context.put("allowSubmit", Boolean.valueOf(allowSubmit));

        // put supplement item into context
        supplementItemIntoContext(state, context, assignment, s);

        initViewSubmissionListOption(state);
        String allOrOneGroup = (String) state.getAttribute(VIEW_SUBMISSION_LIST_OPTION);
        String search = (String) state.getAttribute(VIEW_SUBMISSION_SEARCH);
        Boolean searchFilterOnly = (state.getAttribute(SUBMISSIONS_SEARCH_ONLY) != null
                && ((Boolean) state.getAttribute(SUBMISSIONS_SEARCH_ONLY)) ? Boolean.TRUE : Boolean.FALSE);

        // if the instructor is allowed to submit assignment on behalf of student, add the student list to the page
        User student = (User) state.getAttribute("student");
        if (AssignmentService.getAllowSubmitByInstructor() && student != null) {
            List<String> submitterIds = AssignmentService.getSubmitterIdList(searchFilterOnly.toString(),
                    allOrOneGroup, search, currentAssignmentReference, contextString);
            if (submitterIds != null && !submitterIds.isEmpty() && submitterIds.contains(student.getId())) {
                // we want to come back to the instructor view page
                state.setAttribute(FROM_VIEW, MODE_INSTRUCTOR_VIEW_STUDENTS_ASSIGNMENT);
                context.put("student", student);
            }
        }
        String template = (String) getContext(data).get("template");
        return template + TEMPLATE_STUDENT_VIEW_SUBMISSION;

    } // build_student_view_submission_context

    /**
     * Determines if the attachments have been modified
     * @return true if currentAttachments isn't equal to oldAttachments
     */
    private boolean areAttachmentsModified(List oldAttachments, List currentAttachments) {
        boolean hasCurrent = CollectionUtils.isNotEmpty(currentAttachments);
        boolean hasOld = CollectionUtils.isNotEmpty(oldAttachments);

        if (!hasCurrent) {
            //there are no current attachments
            return hasOld;
        }
        if (!hasOld) {
            //there are no old attachments (and there are new ones)
            return true;
        }

        Set<String> ids1 = getIdsFromReferences(oldAttachments);
        Set<String> ids2 = getIdsFromReferences(currentAttachments);

        //.equals on Sets of Strings will compare .equals on the contained Strings
        return !ids1.equals(ids2);
    }

    /**
     * Gets ids from a list of Reference objects. If the List contains any non-reference objects, they are skipped
     */
    private Set<String> getIdsFromReferences(List references) {
        Set<String> ids = new HashSet<String>();
        for (Object reference : references) {
            if (reference instanceof Reference) {
                Reference casted = (Reference) reference;
                ids.add(casted.getId());
            }
        }

        return ids;
    }

    /**
     * Returns a clone of the passed in List of attachments minus any attachments that should not be displayed in the UI
     */
    private List stripInvisibleAttachments(Object attachments) {
        List stripped = new ArrayList();
        if (attachments == null || !(attachments instanceof List)) {
            return stripped;
        }
        Iterator itAttachments = ((List) attachments).iterator();
        while (itAttachments.hasNext()) {
            Object next = itAttachments.next();
            if (next instanceof Reference) {
                Reference attachment = (Reference) next;
                // inline submissions should not show up in the UI's lists of attachments
                if (!"true".equals(
                        attachment.getProperties().getProperty(AssignmentSubmission.PROP_INLINE_SUBMISSION))) {
                    stripped.add(attachment);
                }
            }
        }
        return stripped;
    }

    /**
     * Get a list of accepted mime types suitable for an 'accept' attribute in an html file picker
     * @throws illegal argument exception if the assignment accepts all attachments
     */
    private String getContentReviewAcceptedMimeTypes() {
        if (contentReviewService.allowAllContent()) {
            throw new IllegalArgumentException(
                    "getContentReviewAcceptedMimeTypes invoked, but the content review service accepts all attachments");
        }

        StringBuilder mimeTypes = new StringBuilder();
        Collection<SortedSet<String>> mimeTypesCollection = contentReviewService
                .getAcceptableExtensionsToMimeTypes().values();
        String delimiter = "";
        for (SortedSet<String> mimeTypesList : mimeTypesCollection) {
            for (String mimeType : mimeTypesList) {
                mimeTypes.append(delimiter).append(mimeType);
                delimiter = ",";
            }
        }
        return mimeTypes.toString();
    }

    /**
     * return true if the assignment's submission type takes attachments.
     * @throws IllegalArgumentException if assignment is null
     */
    private boolean assignmentSubmissionTypeTakesAttachments(Assignment assignment) {
        if (assignment == null) {
            throw new IllegalArgumentException(
                    "assignmentSubmissionTypeTakesAttachments invoked with assignment = null");
        }

        int submissionType = assignment.getContent().getTypeOfSubmission();

        if (submissionType == Assignment.ATTACHMENT_ONLY_ASSIGNMENT_SUBMISSION) {
            return true;
        }
        if (submissionType == Assignment.TEXT_AND_ATTACHMENT_ASSIGNMENT_SUBMISSION) {
            return true;
        }
        if (submissionType == Assignment.SINGLE_ATTACHMENT_SUBMISSION) {
            return true;
        }

        return false;
    }

    /**
     * build the student view of showing a group assignment error with eligible groups
     * a user can only be in one eligible group
     * 
     * @param portlet
     * @param context
     * @param data
     * @param state
     * @return the student error message for this context
     */
    protected String build_student_view_group_error_context(VelocityPortlet portlet, Context context, RunData data,
            SessionState state) {
        String contextString = (String) state.getAttribute(STATE_CONTEXT_STRING);
        context.put("context", contextString);

        User user = (User) state.getAttribute(STATE_USER);
        if (M_log.isDebugEnabled())
            M_log.debug(this + " BUILD SUBMISSION GROUP ERROR WITH USER " + user.getId() + " NAME "
                    + user.getDisplayName());
        String currentAssignmentReference = (String) state.getAttribute(VIEW_SUBMISSION_ASSIGNMENT_REFERENCE);
        Assignment assignment = getAssignment(currentAssignmentReference, "build_student_view_submission_context",
                state);

        if (assignment != null) {
            context.put("assignment", assignment);

            if (assignment.isGroup()) {
                context.put("assignmentService", AssignmentService.getInstance());
                Collection<Group> groups = null;
                Site st = null;
                try {
                    st = SiteService.getSite((String) state.getAttribute(STATE_CONTEXT_STRING));
                    context.put("site", st);
                    groups = getGroupsWithUser(user.getId(), assignment, st);
                    //checkForGroupsInMultipleGroups(assignment, groups, state, rb.getString("group.user.multiple.warning"));
                    context.put("group_size", String.valueOf(groups.size()));
                    context.put("groups", new SortedIterator(groups.iterator(),
                            new AssignmentComparator(state, SORTED_BY_GROUP_TITLE, Boolean.TRUE.toString())));
                } catch (IdUnusedException iue) {
                    M_log.warn(this + ":buildStudentViewSubmissionContext: Site not found!" + iue.getMessage());
                }
            }
        }

        TaggingManager taggingManager = (TaggingManager) ComponentManager
                .get("org.sakaiproject.taggable.api.TaggingManager");
        if (taggingManager.isTaggable() && assignment != null) {
            addProviders(context, state);
            addActivity(context, assignment);
            context.put("taggable", Boolean.valueOf(true));
        }
        context.put("userDirectoryService", UserDirectoryService.getInstance());
        context.put("currentTime", TimeService.newTime());

        String template = (String) getContext(data).get("template");
        return template + TEMPLATE_STUDENT_VIEW_GROUP_ERROR;
    } // build_student_view_group_error_context

    /**
     * Get groups containing a user for this assignment (remove SECTION groups)
     * @param member
     * @param assignment
     * @param site
     * @return collection of groups with the given member
     */
    private Collection<Group> getGroupsWithUser(String member, Assignment assignment, Site site) {
        Collection<Group> groups = new ArrayList<Group>();
        if (assignment.getAccess().equals(Assignment.AssignmentAccess.SITE)) {
            Iterator<Group> _groups = site.getGroupsWithMember(member).iterator();
            while (_groups.hasNext()) {
                Group _g = _groups.next();
                if (_g.getMember(member) != null)// && _g.getProperties().get(GROUP_SECTION_PROPERTY) == null)
                    groups.add(_g);
            }
        } else {
            Iterator<String> _it = assignment.getGroups().iterator();
            while (_it.hasNext()) {
                String _gRef = _it.next();
                Group _g = site.getGroup(_gRef);
                if (_g != null && _g.getMember(member) != null)// && _g.getProperties().get(GROUP_SECTION_PROPERTY) == null)
                    groups.add(_g);
            }
        }
        return groups;
    }

    /**
     * build the student view of showing an assignment submission confirmation
     */
    protected String build_student_view_submission_confirmation_context(VelocityPortlet portlet, Context context,
            RunData data, SessionState state) {
        String contextString = (String) state.getAttribute(STATE_CONTEXT_STRING);
        context.put("context", contextString);

        String invokedByStatus = (String) state.getAttribute(INVOKE);
        if (invokedByStatus != null) {
            if (invokedByStatus.equalsIgnoreCase(INVOKE_BY_LINK)) {
                context.put("linkInvoked", Boolean.valueOf(true));
                state.setAttribute(STATE_MODE, MODE_LIST_ASSIGNMENTS);
            } else {
                context.put("linkInvoked", Boolean.valueOf(false));
            }
        } else {
            context.put("linkInvoked", Boolean.valueOf(false));
        }

        context.put("view", MODE_LIST_ASSIGNMENTS);
        // get user information
        User user = (User) state.getAttribute(STATE_USER);
        String submitterId = (String) state.getAttribute(STATE_SUBMITTER);
        User submitter = user;
        if (submitterId != null) {
            try {
                submitter = UserDirectoryService.getUser(submitterId);
            } catch (UserNotDefinedException ex) {
                M_log.warn(this + ":build_student_view_submission cannot find user with id " + submitterId + " "
                        + ex.getMessage());
            }
        }
        context.put("user_name", submitter.getDisplayName());
        context.put("user_id", submitter.getDisplayId());
        if (StringUtils.trimToNull(user.getEmail()) != null)
            context.put("user_email", user.getEmail());

        // get site information
        try {
            // get current site
            Site site = SiteService.getSite(contextString);
            context.put("site_title", site.getTitle());
        } catch (Exception ignore) {
            M_log.warn(this + ":buildStudentViewSubmission " + ignore.getMessage() + " siteId= " + contextString);
        }

        // get assignment and submission information
        String currentAssignmentReference = (String) state.getAttribute(VIEW_SUBMISSION_ASSIGNMENT_REFERENCE);
        Assignment currentAssignment = getAssignment(currentAssignmentReference,
                "build_student_view_submission_confirmation_context", state);
        if (currentAssignment != null) {
            context.put("assignment", currentAssignment);
            context.put("assignment_title", currentAssignment.getTitle());

            // differenciate submission type
            int submissionType = currentAssignment.getContent().getTypeOfSubmission();
            if (submissionType == Assignment.ATTACHMENT_ONLY_ASSIGNMENT_SUBMISSION
                    || submissionType == Assignment.SINGLE_ATTACHMENT_SUBMISSION) {
                context.put("attachmentSubmissionOnly", Boolean.TRUE);
            } else {
                context.put("attachmentSubmissionOnly", Boolean.FALSE);
            }
            if (submissionType == Assignment.TEXT_ONLY_ASSIGNMENT_SUBMISSION) {
                context.put("textSubmissionOnly", Boolean.TRUE);
            } else {
                context.put("textSubmissionOnly", Boolean.FALSE);
            }

            context.put("submissionType", submissionType);

            AssignmentSubmission s = getSubmission(currentAssignmentReference, submitter,
                    "build_student_view_submission_confirmation_context", state);
            if (s != null) {
                context.put("submission", s);
                context.put("submitted", Boolean.valueOf(s.getSubmitted()));
                context.put("submission_id", s.getId());
                if (s.getTimeSubmitted() != null) {
                    context.put("submit_time", s.getTimeSubmitted().toStringLocalFull());
                }
                List attachments = s.getSubmittedAttachments();
                if (attachments != null && attachments.size() > 0) {
                    context.put("submit_attachments", s.getVisibleSubmittedAttachments());
                }
                context.put("submit_text", StringUtils.trimToNull(s.getSubmittedText()));
                context.put("email_confirmation", Boolean.valueOf(
                        ServerConfigurationService.getBoolean("assignment.submission.confirmation.email", true)));
            }
        }

        state.removeAttribute(STATE_SUBMITTER);
        String template = (String) getContext(data).get("template");
        return template + TEMPLATE_STUDENT_VIEW_SUBMISSION_CONFIRMATION;

    } // build_student_view_submission_confirmation_context

    /**
     * build the student view of assignment
     * 
     * @param portlet
     * @param context
     * @param data
     * @param state
     * @return
     */
    protected String build_student_view_assignment_context(VelocityPortlet portlet, Context context, RunData data,
            SessionState state) {
        context.put("context", state.getAttribute(STATE_CONTEXT_STRING));

        String aReference = (String) state.getAttribute(VIEW_ASSIGNMENT_ID);
        User user = (User) state.getAttribute(STATE_USER);

        AssignmentSubmission submission = null;

        Assignment assignment = getAssignment(aReference, "build_student_view_assignment_context", state);
        if (assignment != null) {
            context.put("assignment", assignment);

            // put creator information into context
            putCreatorIntoContext(context, assignment);

            submission = getSubmission(aReference, user, "build_student_view_assignment_context", state);
            context.put("submission", submission);

            if (assignment.isGroup()) {
                Collection<Group> groups = null;
                Site st = null;
                try {
                    st = SiteService.getSite((String) state.getAttribute(STATE_CONTEXT_STRING));
                    context.put("site", st);
                    groups = getGroupsWithUser(user.getId(), assignment, st);
                    context.put("group_size", String.valueOf(groups.size()));
                    context.put("groups", new SortedIterator(groups.iterator(),
                            new AssignmentComparator(state, SORTED_BY_GROUP_TITLE, Boolean.TRUE.toString())));
                    checkForGroupsInMultipleGroups(assignment, groups, state,
                            rb.getString("group.user.multiple.warning"));
                } catch (IdUnusedException iue) {
                    M_log.warn(this + ":buildStudentViewAssignmentContext: Site not found!" + iue.getMessage());
                }
            }

            // can the student view model answer or not
            canViewAssignmentIntoContext(context, assignment, submission);

            // put resubmit information into context
            assignment_resubmission_option_into_context(context, state);
        }

        TaggingManager taggingManager = (TaggingManager) ComponentManager
                .get("org.sakaiproject.taggable.api.TaggingManager");
        if (taggingManager.isTaggable() && assignment != null) {
            addProviders(context, state);
            addActivity(context, assignment);
            context.put("taggable", Boolean.valueOf(true));
        }

        context.put("contentTypeImageService", state.getAttribute(STATE_CONTENT_TYPE_IMAGE_SERVICE));
        context.put("userDirectoryService", UserDirectoryService.getInstance());

        // put supplement item into context
        supplementItemIntoContext(state, context, assignment, submission);

        String template = (String) getContext(data).get("template");
        return template + TEMPLATE_STUDENT_VIEW_ASSIGNMENT;

    } // build_student_view_submission_context

    /**
     * build the student preview of showing an assignment submission
     * 
     * @param portlet
     * @param context
     * @param data
     * @param state
     * @return
     */
    protected String build_student_preview_submission_context(VelocityPortlet portlet, Context context,
            RunData data, SessionState state) {
        User user = (User) state.getAttribute(STATE_USER);
        String aReference = (String) state.getAttribute(PREVIEW_SUBMISSION_ASSIGNMENT_REFERENCE);

        Assignment assignment = getAssignment(aReference, "build_student_preview_submission_context", state);
        if (assignment != null) {
            context.put("assignment", assignment);

            AssignmentSubmission submission = getSubmission(aReference, user,
                    "build_student_preview_submission_context", state);
            context.put("submission", submission);

            context.put("canSubmit", Boolean.valueOf(
                    AssignmentService.canSubmit((String) state.getAttribute(STATE_CONTEXT_STRING), assignment)));

            setScoringAgentProperties(context, assignment, submission, false);

            // can the student view model answer or not
            canViewAssignmentIntoContext(context, assignment, submission);

            // put the resubmit information into context
            assignment_resubmission_option_into_context(context, state);

            if (state.getAttribute(SAVED_FEEDBACK) != null) {
                context.put("savedFeedback", Boolean.TRUE);
                state.removeAttribute(SAVED_FEEDBACK);
            }
            if (state.getAttribute(OW_FEEDBACK) != null) {
                context.put("overwriteFeedback", Boolean.TRUE);
                state.removeAttribute(OW_FEEDBACK);
            }
            if (state.getAttribute(RETURNED_FEEDBACK) != null) {
                context.put("returnedFeedback", Boolean.TRUE);
                state.removeAttribute(RETURNED_FEEDBACK);
            }

        }

        context.put("text", state.getAttribute(PREVIEW_SUBMISSION_TEXT));
        context.put("honor_pledge_yes", state.getAttribute(PREVIEW_SUBMISSION_HONOR_PLEDGE_YES));
        context.put("honor_pledge_text",
                ServerConfigurationService.getString("assignment.honor.pledge", rb.getString("gen.honple2")));
        context.put("attachments", stripInvisibleAttachments(state.getAttribute(PREVIEW_SUBMISSION_ATTACHMENTS)));
        context.put("contentTypeImageService", state.getAttribute(STATE_CONTENT_TYPE_IMAGE_SERVICE));

        String template = (String) getContext(data).get("template");
        return template + TEMPLATE_STUDENT_PREVIEW_SUBMISSION;
    } // build_student_preview_submission_context

    private void canViewAssignmentIntoContext(Context context, Assignment assignment,
            AssignmentSubmission submission) {
        boolean canViewModelAnswer = m_assignmentSupplementItemService.canViewModelAnswer(assignment, submission);
        context.put("allowViewModelAnswer", Boolean.valueOf(canViewModelAnswer));
        if (canViewModelAnswer) {
            context.put("modelAnswer", m_assignmentSupplementItemService.getModelAnswer(assignment.getId()));
        }
    }

    /**
     * Look up a security advisor from the session with the given key, and then push it on the security service stack.
     * @param session
     * @param sessionKey String key used to look up a SecurityAdvisor stored in the session object
     * @param removeFromSession boolean flag indicating if the value should be removed from the session once retrieved
     * @return
     */
    private SecurityAdvisor pushSecurityAdvisor(Session session, String sessionKey, boolean removeFromSession) {
        SecurityAdvisor asgnAdvisor = (SecurityAdvisor) session.getAttribute(sessionKey);
        if (asgnAdvisor != null) {
            m_securityService.pushAdvisor(asgnAdvisor);
            if (removeFromSession)
                session.removeAttribute(sessionKey);
        }
        return asgnAdvisor;
    }

    /**
     * If necessary, put a "decoratedUrlMap" into the context
     * @param session
     * @param context Context object that will have a "decoratedUrlMap" object put into it
     * @param removeFromSession boolean flag indicating if the value should be removed from the session once retrieved
     */
    private void addDecoUrlMapToContext(Session session, Context context, boolean removeFromSession) {
        SecurityAdvisor contentAdvisor = (SecurityAdvisor) session
                .getAttribute("assignment.content.security.advisor");

        String decoratedContentWrapper = (String) session.getAttribute("assignment.content.decoration.wrapper");
        String[] contentRefs = (String[]) session.getAttribute("assignment.content.decoration.wrapper.refs");

        if (removeFromSession) {
            session.removeAttribute("assignment.content.decoration.wrapper");
            session.removeAttribute("assignment.content.decoration.wrapper.refs");
        }

        if (contentAdvisor != null && contentRefs != null) {
            m_securityService.pushAdvisor(contentAdvisor);

            Map<String, String> urlMap = new HashMap<String, String>();
            for (String refStr : contentRefs) {
                Reference ref = EntityManager.newReference(refStr);
                String url = ref.getUrl();
                urlMap.put(url,
                        url.replaceFirst("access/content", "access/" + decoratedContentWrapper + "/content"));
            }
            context.put("decoratedUrlMap", urlMap);
            m_securityService.popAdvisor(contentAdvisor);
        }
    }

    /**
     * build the student view of showing a graded submission
     */
    protected String build_student_view_grade_context(VelocityPortlet portlet, Context context, RunData data,
            SessionState state) {
        context.put("contentTypeImageService", state.getAttribute(STATE_CONTENT_TYPE_IMAGE_SERVICE));

        Session session = SessionManager.getCurrentSession();
        addDecoUrlMapToContext(session, context, false);
        SecurityAdvisor asgnAdvisor = pushSecurityAdvisor(session, "assignment.security.advisor", false);

        AssignmentSubmission submission = null;
        Assignment assignment = null;
        String submissionId = (String) state.getAttribute(VIEW_GRADE_SUBMISSION_ID);
        submission = getSubmission(submissionId, "build_student_view_grade_context", state);
        if (submission != null) {
            assignment = submission.getAssignment();
            context.put("assignment", assignment);
            if (assignment.getContent().getTypeOfSubmission() == Assignment.NON_ELECTRONIC_ASSIGNMENT_SUBMISSION) {
                context.put("nonElectronicType", Boolean.TRUE);
            }
            context.put("submission", submission);

            if (assignment.isGroup()) {
                String _grade_override = submission.getGradeForUser(UserDirectoryService.getCurrentUser().getId());
                if (_grade_override != null) {
                    if (assignment.getContext() != null && assignment.getContent().getTypeOfGrade() == 3) {
                        context.put("override",
                                displayGrade(state, _grade_override, assignment.getContent().getFactor()));
                    } else {
                        context.put("override", _grade_override);
                    }
                }
            }

            // can the student view model answer or not
            canViewAssignmentIntoContext(context, assignment, submission);

            // scoring agent integration
            setScoringAgentProperties(context, assignment, submission, false);

            //peer review
            if (assignment.getAllowPeerAssessment() && assignment.getPeerAssessmentStudentViewReviews()
                    && assignment.isPeerAssessmentClosed()) {
                List<PeerAssessmentItem> reviews = assignmentPeerAssessmentService
                        .getPeerAssessmentItems(submission.getId(), assignment.getContent().getFactor());
                if (reviews != null) {
                    List<PeerAssessmentItem> completedReviews = new ArrayList<PeerAssessmentItem>();
                    for (PeerAssessmentItem review : reviews) {
                        if (!review.isRemoved() && (review.getScore() != null
                                || (review.getComment() != null && !"".equals(review.getComment().trim())))) {
                            //only show peer reviews that have either a score or a comment saved
                            if (assignment.getPeerAssessmentAnonEval()) {
                                //annonymous eval
                                review.setAssessorDisplayName(rb.getFormattedMessage("gen.reviewer.countReview",
                                        completedReviews.size() + 1));
                            } else {
                                //need to set the assessor's display name
                                try {
                                    review.setAssessorDisplayName(UserDirectoryService
                                            .getUser(review.getAssessorUserId()).getDisplayName());
                                } catch (UserNotDefinedException e) {
                                    //reviewer doesn't exist or userId is wrong
                                    M_log.error(e.getMessage(), e);
                                    //set a default one:
                                    review.setAssessorDisplayName(rb.getFormattedMessage("gen.reviewer.countReview",
                                            completedReviews.size() + 1));
                                }
                            }
                            completedReviews.add(review);

                        }
                    }
                    if (completedReviews.size() > 0) {
                        context.put("peerReviews", completedReviews);
                    }
                }
            }
        }

        TaggingManager taggingManager = (TaggingManager) ComponentManager
                .get("org.sakaiproject.taggable.api.TaggingManager");
        if (taggingManager.isTaggable() && submission != null) {
            AssignmentActivityProducer assignmentActivityProducer = (AssignmentActivityProducer) ComponentManager
                    .get("org.sakaiproject.assignment.taggable.api.AssignmentActivityProducer");
            List<DecoratedTaggingProvider> providers = addProviders(context, state);
            List<TaggingHelperInfo> itemHelpers = new ArrayList<TaggingHelperInfo>();
            for (DecoratedTaggingProvider provider : providers) {
                TaggingHelperInfo helper = provider.getProvider().getItemHelperInfo(assignmentActivityProducer
                        .getItem(submission, UserDirectoryService.getCurrentUser().getId()).getReference());
                if (helper != null) {
                    itemHelpers.add(helper);
                }
            }
            addItem(context, submission, UserDirectoryService.getCurrentUser().getId());
            addActivity(context, submission.getAssignment());
            context.put("itemHelpers", itemHelpers);
            context.put("taggable", Boolean.valueOf(true));
        }

        // put supplement item into context
        supplementItemIntoContext(state, context, assignment, submission);

        if (asgnAdvisor != null) {
            m_securityService.popAdvisor(asgnAdvisor);
        }

        String template = (String) getContext(data).get("template");
        return template + TEMPLATE_STUDENT_VIEW_GRADE;

    } // build_student_view_grade_context

    /**
     * build the view of assignments list
     */
    protected String build_list_assignments_context(VelocityPortlet portlet, Context context, RunData data,
            SessionState state) {
        TaggingManager taggingManager = (TaggingManager) ComponentManager
                .get("org.sakaiproject.taggable.api.TaggingManager");
        if (taggingManager.isTaggable()) {
            context.put("producer",
                    ComponentManager.get("org.sakaiproject.assignment.taggable.api.AssignmentActivityProducer"));
            context.put("providers", taggingManager.getProviders());
            context.put("taggable", Boolean.valueOf(true));
        }

        String contextString = (String) state.getAttribute(STATE_CONTEXT_STRING);
        context.put("contextString", contextString);
        context.put("user", state.getAttribute(STATE_USER));
        context.put("service", AssignmentService.getInstance());
        context.put("AuthzGroupService", authzGroupService);
        context.put("TimeService", TimeService.getInstance());
        context.put("LongObject", Long.valueOf(TimeService.newTime().getTime()));
        context.put("currentTime", TimeService.newTime());
        String sortedBy = (String) state.getAttribute(SORTED_BY);
        String sortedAsc = (String) state.getAttribute(SORTED_ASC);
        // clean sort criteria
        if (SORTED_BY_GROUP_TITLE.equals(sortedBy) || SORTED_BY_GROUP_DESCRIPTION.equals(sortedBy)) {
            sortedBy = SORTED_BY_DUEDATE;
            sortedAsc = Boolean.TRUE.toString();
            state.setAttribute(SORTED_BY, sortedBy);
            state.setAttribute(SORTED_ASC, sortedAsc);
        }
        context.put("sortedBy", sortedBy);
        context.put("sortedAsc", sortedAsc);

        if (state.getAttribute(STATE_SELECTED_VIEW) != null &&
        // this is not very elegant, but the view cannot be 'lisofass2' here.
                !state.getAttribute(STATE_SELECTED_VIEW).equals(MODE_INSTRUCTOR_VIEW_STUDENTS_ASSIGNMENT)) {
            context.put("view", state.getAttribute(STATE_SELECTED_VIEW));
        }

        List assignments = prepPage(state);
        context.put("assignments", assignments.iterator());

        // allow add assignment?
        Map<String, List<PeerAssessmentItem>> peerAssessmentItemsMap = new HashMap<String, List<PeerAssessmentItem>>();
        boolean allowAddAssignment = AssignmentService.allowAddAssignment(contextString);
        if (!allowAddAssignment) {
            //this is the same requirement for displaying the assignment link for students
            //now lets create a map for peer reviews for each eligible assignment
            for (Assignment assignment : (List<Assignment>) assignments) {
                if (assignment.getAllowPeerAssessment()
                        && (assignment.isPeerAssessmentOpen() || assignment.isPeerAssessmentClosed())) {
                    peerAssessmentItemsMap.put(assignment.getId(),
                            assignmentPeerAssessmentService.getPeerAssessmentItems(assignment.getId(),
                                    UserDirectoryService.getCurrentUser().getId(),
                                    assignment.getContent().getFactor()));
                }
            }
        }
        context.put("peerAssessmentItemsMap", peerAssessmentItemsMap);

        // allow get assignment
        context.put("allowGetAssignment", Boolean.valueOf(AssignmentService.allowGetAssignment(contextString)));

        // test whether user user can grade at least one assignment
        // and update the state variable.
        boolean allowGradeSubmission = false;
        for (Iterator aIterator = assignments.iterator(); !allowGradeSubmission && aIterator.hasNext();) {
            if (AssignmentService.allowGradeSubmission(((Assignment) aIterator.next()).getReference())) {
                allowGradeSubmission = true;
            }
        }
        state.setAttribute(STATE_ALLOW_GRADE_SUBMISSION, Boolean.valueOf(allowGradeSubmission));
        context.put("allowGradeSubmission", state.getAttribute(STATE_ALLOW_GRADE_SUBMISSION));

        // allow remove assignment?
        boolean allowRemoveAssignment = false;
        for (Iterator aIterator = assignments.iterator(); !allowRemoveAssignment && aIterator.hasNext();) {
            if (AssignmentService.allowRemoveAssignment(((Assignment) aIterator.next()).getReference())) {
                allowRemoveAssignment = true;
            }
        }
        context.put("allowRemoveAssignment", Boolean.valueOf(allowRemoveAssignment));

        add2ndToolbarFields(data, context);

        // inform the observing courier that we just updated the page...
        // if there are pending requests to do so they can be cleared
        justDelivered(state);

        pagingInfoToContext(state, context);

        // put site object into context
        try {
            // get current site
            Site site = SiteService.getSite(contextString);
            context.put("site", site);
            // any group in the site?
            Collection groups = getAllGroupsInSite(contextString);

            context.put("groups", (groups != null && groups.size() > 0) ? Boolean.TRUE : Boolean.FALSE);

            // add active user list
            AuthzGroup realm = authzGroupService.getAuthzGroup(SiteService.siteReference(contextString));
            if (realm != null) {
                context.put("activeUserIds", realm.getUsers());
            }
        } catch (Exception ignore) {
            M_log.warn(this + ":build_list_assignments_context " + ignore.getMessage());
            M_log.warn(this + ignore.getMessage() + " siteId= " + contextString);
        }

        boolean allowSubmit = AssignmentService.allowAddSubmission(contextString);
        context.put("allowSubmit", Boolean.valueOf(allowSubmit));

        // related to resubmit settings
        context.put("allowResubmitNumberProp", AssignmentSubmission.ALLOW_RESUBMIT_NUMBER);
        context.put("allowResubmitCloseTimeProp", AssignmentSubmission.ALLOW_RESUBMIT_CLOSETIME);

        // the type int for non-electronic submission
        context.put("typeNonElectronic", Integer.valueOf(Assignment.NON_ELECTRONIC_ASSIGNMENT_SUBMISSION));

        // show or hide the number of submission column
        context.put(SHOW_NUMBER_SUBMISSION_COLUMN, state.getAttribute(SHOW_NUMBER_SUBMISSION_COLUMN));

        String template = (String) getContext(data).get("template");
        return template + TEMPLATE_LIST_ASSIGNMENTS;

    } // build_list_assignments_context

    private HashSet<String> getSubmittersIdSet(List submissions) {
        HashSet<String> rv = new HashSet<String>();
        for (Iterator iSubmissions = submissions.iterator(); iSubmissions.hasNext();) {
            rv.add(((AssignmentSubmission) iSubmissions.next()).getSubmitterId());
        }
        return rv;
    }

    private HashSet<String> getAllowAddSubmissionUsersIdSet(List users) {
        HashSet<String> rv = new HashSet<String>();
        for (Iterator iUsers = users.iterator(); iUsers.hasNext();) {
            rv.add(((User) iUsers.next()).getId());
        }
        return rv;
    }

    /**
     * build the instructor view of creating a new assignment or editing an existing one
     */
    protected String build_instructor_new_edit_assignment_context(VelocityPortlet portlet, Context context,
            RunData data, SessionState state) {
        // If the user adds the schedule or alternate calendar tool after using the assignment tool,
        // we need to remove these state attributes so they are re-initialized with the updated
        // availability of the tools.
        state.removeAttribute(CALENDAR_TOOL_EXIST);
        state.removeAttribute(ADDITIONAL_CALENDAR_TOOL_READY);
        initState(state, portlet, (JetspeedRunData) data);

        // Anon grading enabled/disabled
        context.put("enableAnonGrading",
                ServerConfigurationService.getBoolean(SAK_PROP_ENABLE_ANON_GRADING, false));

        // is the assignment an new assignment
        String assignmentId = (String) state.getAttribute(EDIT_ASSIGNMENT_ID);
        if (assignmentId != null) {
            Assignment a = getAssignment(assignmentId, "build_instructor_new_edit_assignment_context", state);
            if (a != null) {
                context.put("assignment", a);
                if (a.isGroup()) {
                    Collection<String> _dupUsers = usersInMultipleGroups(a);
                    if (_dupUsers.size() > 0)
                        context.put("multipleGroupUsers", _dupUsers);
                }
            }
        }

        // set up context variables
        setAssignmentFormContext(state, context);

        context.put("fField", state.getAttribute(NEW_ASSIGNMENT_FOCUS));

        context.put("group_submissions_enabled", Boolean
                .valueOf(ServerConfigurationService.getBoolean("assignment.group.submission.enabled", true)));
        context.put("visible_date_enabled",
                Boolean.valueOf(ServerConfigurationService.getBoolean("assignment.visible.date.enabled", false)));

        String sortedBy = (String) state.getAttribute(SORTED_BY);
        String sortedAsc = (String) state.getAttribute(SORTED_ASC);
        context.put("sortedBy", sortedBy);
        context.put("sortedAsc", sortedAsc);

        String template = (String) getContext(data).get("template");
        return template + TEMPLATE_INSTRUCTOR_NEW_EDIT_ASSIGNMENT;

    } // build_instructor_new_assignment_context

    protected void setAssignmentFormContext(SessionState state, Context context) {
        // put the names and values into vm file

        context.put("name_UsePeerAssessment", NEW_ASSIGNMENT_USE_PEER_ASSESSMENT);
        context.put("name_additionalOptions", NEW_ASSIGNMENT_ADDITIONAL_OPTIONS);
        context.put("name_PeerAssessmentAnonEval", NEW_ASSIGNMENT_PEER_ASSESSMENT_ANON_EVAL);
        context.put("name_PeerAssessmentStudentViewReviews", NEW_ASSIGNMENT_PEER_ASSESSMENT_STUDENT_VIEW_REVIEWS);
        context.put("name_PeerAssessmentNumReviews", NEW_ASSIGNMENT_PEER_ASSESSMENT_NUM_REVIEWS);
        context.put("name_PeerAssessmentInstructions", NEW_ASSIGNMENT_PEER_ASSESSMENT_INSTRUCTIONS);
        context.put("name_UseReviewService", NEW_ASSIGNMENT_USE_REVIEW_SERVICE);
        context.put("name_AllowStudentView", NEW_ASSIGNMENT_ALLOW_STUDENT_VIEW);
        context.put("name_NEW_ASSIGNMENT_REVIEW_SERVICE_SUBMIT_RADIO", NEW_ASSIGNMENT_REVIEW_SERVICE_SUBMIT_RADIO);
        context.put("name_NEW_ASSIGNMENT_REVIEW_SERVICE_SUBMIT_NONE", NEW_ASSIGNMENT_REVIEW_SERVICE_SUBMIT_NONE);
        context.put("name_NEW_ASSIGNMENT_REVIEW_SERVICE_SUBMIT_STANDARD",
                NEW_ASSIGNMENT_REVIEW_SERVICE_SUBMIT_STANDARD);
        context.put("name_NEW_ASSIGNMENT_REVIEW_SERVICE_SUBMIT_INSITUTION",
                NEW_ASSIGNMENT_REVIEW_SERVICE_SUBMIT_INSITUTION);
        context.put("name_NEW_ASSIGNMENT_REVIEW_SERVICE_REPORT_RADIO", NEW_ASSIGNMENT_REVIEW_SERVICE_REPORT_RADIO);
        context.put("name_NEW_ASSIGNMENT_REVIEW_SERVICE_REPORT_IMMEDIATELY",
                NEW_ASSIGNMENT_REVIEW_SERVICE_REPORT_IMMEDIATELY);
        context.put("name_NEW_ASSIGNMENT_REVIEW_SERVICE_REPORT_DUE", NEW_ASSIGNMENT_REVIEW_SERVICE_REPORT_DUE);
        context.put("name_NEW_ASSIGNMENT_REVIEW_SERVICE_CHECK_TURNITIN",
                NEW_ASSIGNMENT_REVIEW_SERVICE_CHECK_TURNITIN);
        context.put("name_NEW_ASSIGNMENT_REVIEW_SERVICE_CHECK_INTERNET",
                NEW_ASSIGNMENT_REVIEW_SERVICE_CHECK_INTERNET);
        context.put("name_NEW_ASSIGNMENT_REVIEW_SERVICE_CHECK_PUB", NEW_ASSIGNMENT_REVIEW_SERVICE_CHECK_PUB);
        context.put("name_NEW_ASSIGNMENT_REVIEW_SERVICE_CHECK_INSTITUTION",
                NEW_ASSIGNMENT_REVIEW_SERVICE_CHECK_INSTITUTION);
        context.put("name_NEW_ASSIGNMENT_REVIEW_SERVICE_EXCLUDE_BIBLIOGRAPHIC",
                NEW_ASSIGNMENT_REVIEW_SERVICE_EXCLUDE_BIBLIOGRAPHIC);
        context.put("name_NEW_ASSIGNMENT_REVIEW_SERVICE_EXCLUDE_QUOTED",
                NEW_ASSIGNMENT_REVIEW_SERVICE_EXCLUDE_QUOTED);
        context.put("name_NEW_ASSIGNMENT_REVIEW_SERVICE_EXCLUDE_SMALL_MATCHES",
                NEW_ASSIGNMENT_REVIEW_SERVICE_EXCLUDE_SMALL_MATCHES);
        context.put("name_NEW_ASSIGNMENT_REVIEW_SERVICE_EXCLUDE_TYPE", NEW_ASSIGNMENT_REVIEW_SERVICE_EXCLUDE_TYPE);
        context.put("name_NEW_ASSIGNMENT_REVIEW_SERVICE_EXCLUDE_VALUE",
                NEW_ASSIGNMENT_REVIEW_SERVICE_EXCLUDE_VALUE);

        context.put("name_title", NEW_ASSIGNMENT_TITLE);
        context.put("name_order", NEW_ASSIGNMENT_ORDER);

        // set open time context variables
        putTimePropertiesInContext(context, state, "Open", NEW_ASSIGNMENT_OPENMONTH, NEW_ASSIGNMENT_OPENDAY,
                NEW_ASSIGNMENT_OPENYEAR, NEW_ASSIGNMENT_OPENHOUR, NEW_ASSIGNMENT_OPENMIN);

        // set visible time context variables
        if (Boolean.valueOf(ServerConfigurationService.getBoolean("assignment.visible.date.enabled", false))) {
            putTimePropertiesInContext(context, state, "Visible", NEW_ASSIGNMENT_VISIBLEMONTH,
                    NEW_ASSIGNMENT_VISIBLEDAY, NEW_ASSIGNMENT_VISIBLEYEAR, NEW_ASSIGNMENT_VISIBLEHOUR,
                    NEW_ASSIGNMENT_VISIBLEMIN);
            context.put(NEW_ASSIGNMENT_VISIBLETOGGLE, ((Boolean) state.getAttribute(NEW_ASSIGNMENT_VISIBLETOGGLE)));
        }

        // set due time context variables
        putTimePropertiesInContext(context, state, "Due", NEW_ASSIGNMENT_DUEMONTH, NEW_ASSIGNMENT_DUEDAY,
                NEW_ASSIGNMENT_DUEYEAR, NEW_ASSIGNMENT_DUEHOUR, NEW_ASSIGNMENT_DUEMIN);

        context.put("name_EnableCloseDate", NEW_ASSIGNMENT_ENABLECLOSEDATE);
        // set close time context variables
        putTimePropertiesInContext(context, state, "Close", NEW_ASSIGNMENT_CLOSEMONTH, NEW_ASSIGNMENT_CLOSEDAY,
                NEW_ASSIGNMENT_CLOSEYEAR, NEW_ASSIGNMENT_CLOSEHOUR, NEW_ASSIGNMENT_CLOSEMIN);

        context.put("name_Section", NEW_ASSIGNMENT_SECTION);
        context.put("name_SubmissionType", NEW_ASSIGNMENT_SUBMISSION_TYPE);
        context.put("name_Category", NEW_ASSIGNMENT_CATEGORY);
        context.put("name_GradeType", NEW_ASSIGNMENT_GRADE_TYPE);
        context.put("name_GradePoints", NEW_ASSIGNMENT_GRADE_POINTS);
        context.put("name_Description", NEW_ASSIGNMENT_DESCRIPTION);
        // do not show the choice when there is no Schedule tool yet
        if (state.getAttribute(CALENDAR) != null || state.getAttribute(ADDITIONAL_CALENDAR) != null)
            context.put("name_CheckAddDueDate", ResourceProperties.NEW_ASSIGNMENT_CHECK_ADD_DUE_DATE);

        context.put("name_CheckHideDueDate", NEW_ASSIGNMENT_CHECK_HIDE_DUE_DATE);
        //don't show the choice when there is no Announcement tool yet
        if (state.getAttribute(ANNOUNCEMENT_CHANNEL) != null) {
            context.put("name_CheckAutoAnnounce", ResourceProperties.NEW_ASSIGNMENT_CHECK_AUTO_ANNOUNCE);
            context.put("name_OpenDateNotification", Assignment.ASSIGNMENT_OPENDATE_NOTIFICATION);
        }
        context.put("name_CheckAddHonorPledge", NEW_ASSIGNMENT_CHECK_ADD_HONOR_PLEDGE);

        // SAK-17606
        context.put("name_CheckAnonymousGrading", NEW_ASSIGNMENT_CHECK_ANONYMOUS_GRADING);

        context.put("name_CheckIsGroupSubmission", NEW_ASSIGNMENT_GROUP_SUBMIT);
        //Default value of additional options for now. It's a radio so it can only have one option
        String contextAdditionalOptions = "none";

        String gs = (String) state.getAttribute(NEW_ASSIGNMENT_GROUP_SUBMIT);
        if (gs != null && "1".equals(gs)) {
            contextAdditionalOptions = "group";
        }

        // set the values
        Assignment a = null;
        String assignmentRef = (String) state.getAttribute(EDIT_ASSIGNMENT_ID);
        if (assignmentRef != null) {
            a = getAssignment(assignmentRef, "setAssignmentFormContext", state);

        }

        // put the re-submission info into context
        putTimePropertiesInContext(context, state, "Resubmit", ALLOW_RESUBMIT_CLOSEMONTH, ALLOW_RESUBMIT_CLOSEDAY,
                ALLOW_RESUBMIT_CLOSEYEAR, ALLOW_RESUBMIT_CLOSEHOUR, ALLOW_RESUBMIT_CLOSEMIN);

        context.put("value_year_from", state.getAttribute(NEW_ASSIGNMENT_YEAR_RANGE_FROM));
        context.put("value_year_to", state.getAttribute(NEW_ASSIGNMENT_YEAR_RANGE_TO));
        context.put("value_title", state.getAttribute(NEW_ASSIGNMENT_TITLE));
        context.put("value_position_order", state.getAttribute(NEW_ASSIGNMENT_ORDER));

        context.put("value_EnableCloseDate", state.getAttribute(NEW_ASSIGNMENT_ENABLECLOSEDATE));

        context.put("value_Sections", state.getAttribute(NEW_ASSIGNMENT_SECTION));
        context.put("value_SubmissionType", state.getAttribute(NEW_ASSIGNMENT_SUBMISSION_TYPE));

        // information related to gradebook categories
        putGradebookCategoryInfoIntoContext(state, context);

        context.put("value_totalSubmissionTypes", Assignment.SUBMISSION_TYPES.length);
        context.put("value_GradeType", state.getAttribute(NEW_ASSIGNMENT_GRADE_TYPE));
        // format to show one decimal place
        String maxGrade = (String) state.getAttribute(NEW_ASSIGNMENT_GRADE_POINTS);
        context.put("value_GradePoints", displayGrade(state, maxGrade,
                a != null ? a.getContent().getFactor() : AssignmentService.getScaleFactor()));
        context.put("value_Description", state.getAttribute(NEW_ASSIGNMENT_DESCRIPTION));

        // SAK-17606
        context.put("value_CheckAnonymousGrading", state.getAttribute(NEW_ASSIGNMENT_CHECK_ANONYMOUS_GRADING));

        //Peer Assessment
        String peer = (String) state.getAttribute(NEW_ASSIGNMENT_USE_PEER_ASSESSMENT);
        if (peer != null && "true".equals(peer)) {
            contextAdditionalOptions = "peerreview";
        }
        context.put("value_PeerAssessmentAnonEval", state.getAttribute(NEW_ASSIGNMENT_PEER_ASSESSMENT_ANON_EVAL));
        context.put("value_PeerAssessmentStudentViewReviews",
                state.getAttribute(NEW_ASSIGNMENT_PEER_ASSESSMENT_STUDENT_VIEW_REVIEWS));
        context.put("value_PeerAssessmentNumReviews",
                state.getAttribute(NEW_ASSIGNMENT_PEER_ASSESSMENT_NUM_REVIEWS));
        context.put("value_PeerAssessmentInstructions",
                state.getAttribute(NEW_ASSIGNMENT_PEER_ASSESSMENT_INSTRUCTIONS));
        putTimePropertiesInContext(context, state, "PeerPeriod", NEW_ASSIGNMENT_PEERPERIODMONTH,
                NEW_ASSIGNMENT_PEERPERIODDAY, NEW_ASSIGNMENT_PEERPERIODYEAR, NEW_ASSIGNMENT_PEERPERIODHOUR,
                NEW_ASSIGNMENT_PEERPERIODMIN);

        // Keep the use review service setting
        context.put("value_UseReviewService", state.getAttribute(NEW_ASSIGNMENT_USE_REVIEW_SERVICE));
        if (!contentReviewService.allowAllContent()) {
            String fileTypesMessage = getContentReviewAcceptedFileTypesMessage();
            String contentReviewNote = rb.getFormattedMessage("content_review.note",
                    new Object[] { fileTypesMessage });
            context.put("content_review_note", contentReviewNote);
        }
        context.put("turnitin_forceSingleAttachment",
                ServerConfigurationService.getBoolean("turnitin.forceSingleAttachment", false));
        context.put("value_AllowStudentView",
                state.getAttribute(NEW_ASSIGNMENT_ALLOW_STUDENT_VIEW) == null
                        ? Boolean.toString(
                                ServerConfigurationService.getBoolean("turnitin.allowStudentView.default", false))
                        : state.getAttribute(NEW_ASSIGNMENT_ALLOW_STUDENT_VIEW));

        List<String> subOptions = getSubmissionRepositoryOptions();
        String submitRadio = ServerConfigurationService.getString("turnitin.repository.setting.value", null) == null
                ? NEW_ASSIGNMENT_REVIEW_SERVICE_SUBMIT_NONE
                : ServerConfigurationService.getString("turnitin.repository.setting.value");
        if (state.getAttribute(NEW_ASSIGNMENT_REVIEW_SERVICE_SUBMIT_RADIO) != null
                && subOptions.contains(state.getAttribute(NEW_ASSIGNMENT_REVIEW_SERVICE_SUBMIT_RADIO)))
            submitRadio = state.getAttribute(NEW_ASSIGNMENT_REVIEW_SERVICE_SUBMIT_RADIO).toString();
        context.put("value_NEW_ASSIGNMENT_REVIEW_SERVICE_SUBMIT_RADIO", submitRadio);
        context.put("show_NEW_ASSIGNMENT_REVIEW_SERVICE_SUBMIT", subOptions);

        List<String> reportGenOptions = getReportGenOptions();
        String reportRadio = ServerConfigurationService.getString("turnitin.report_gen_speed.setting.value",
                null) == null ? NEW_ASSIGNMENT_REVIEW_SERVICE_REPORT_IMMEDIATELY
                        : ServerConfigurationService.getString("turnitin.report_gen_speed.setting.value");
        if (state.getAttribute(NEW_ASSIGNMENT_REVIEW_SERVICE_REPORT_RADIO) != null
                && reportGenOptions.contains(state.getAttribute(NEW_ASSIGNMENT_REVIEW_SERVICE_REPORT_RADIO)))
            reportRadio = state.getAttribute(NEW_ASSIGNMENT_REVIEW_SERVICE_REPORT_RADIO).toString();
        context.put("value_NEW_ASSIGNMENT_REVIEW_SERVICE_REPORT_RADIO", reportRadio);
        context.put("show_NEW_ASSIGNMENT_REVIEW_SERVICE_REPORT", reportGenOptions);

        context.put("show_NEW_ASSIGNMENT_REVIEW_SERVICE_CHECK_TURNITIN",
                ServerConfigurationService.getBoolean("turnitin.option.s_paper_check", true));
        context.put("show_NEW_ASSIGNMENT_REVIEW_SERVICE_CHECK_INTERNET",
                ServerConfigurationService.getBoolean("turnitin.option.internet_check", true));
        context.put("show_NEW_ASSIGNMENT_REVIEW_SERVICE_CHECK_PUB",
                ServerConfigurationService.getBoolean("turnitin.option.journal_check", true));
        context.put("show_NEW_ASSIGNMENT_REVIEW_SERVICE_CHECK_INSTITUTION",
                ServerConfigurationService.getBoolean("turnitin.option.institution_check", false));

        context.put("value_NEW_ASSIGNMENT_REVIEW_SERVICE_CHECK_TURNITIN",
                (state.getAttribute(NEW_ASSIGNMENT_REVIEW_SERVICE_CHECK_TURNITIN) == null)
                        ? Boolean.toString(ServerConfigurationService.getBoolean(
                                "turnitin.option.s_paper_check.default",
                                ServerConfigurationService.getBoolean("turnitin.option.s_paper_check", true) ? true
                                        : false))
                        : state.getAttribute(NEW_ASSIGNMENT_REVIEW_SERVICE_CHECK_TURNITIN));
        context.put("value_NEW_ASSIGNMENT_REVIEW_SERVICE_CHECK_INTERNET",
                state.getAttribute(NEW_ASSIGNMENT_REVIEW_SERVICE_CHECK_INTERNET) == null
                        ? Boolean.toString(ServerConfigurationService.getBoolean(
                                "turnitin.option.internet_check.default",
                                ServerConfigurationService.getBoolean("turnitin.option.internet_check", true) ? true
                                        : false))
                        : state.getAttribute(NEW_ASSIGNMENT_REVIEW_SERVICE_CHECK_INTERNET));
        context.put("value_NEW_ASSIGNMENT_REVIEW_SERVICE_CHECK_PUB",
                state.getAttribute(NEW_ASSIGNMENT_REVIEW_SERVICE_CHECK_PUB) == null
                        ? Boolean
                                .toString(ServerConfigurationService
                                        .getBoolean("turnitin.option.journal_check.default",
                                                ServerConfigurationService.getBoolean(
                                                        "turnitin.option.journal_check", true) ? true : false))
                        : state.getAttribute(NEW_ASSIGNMENT_REVIEW_SERVICE_CHECK_PUB));
        context.put("value_NEW_ASSIGNMENT_REVIEW_SERVICE_CHECK_INSTITUTION",
                state.getAttribute(NEW_ASSIGNMENT_REVIEW_SERVICE_CHECK_INSTITUTION) == null
                        ? Boolean.toString(
                                ServerConfigurationService.getBoolean("turnitin.option.institution_check.default",
                                        ServerConfigurationService.getBoolean("turnitin.option.institution_check",
                                                true) ? true : false))
                        : state.getAttribute(NEW_ASSIGNMENT_REVIEW_SERVICE_CHECK_INSTITUTION));

        //exclude bibliographic materials
        context.put("show_NEW_ASSIGNMENT_REVIEW_SERVICE_EXCLUDE_BIBLIOGRAPHIC",
                ServerConfigurationService.getBoolean("turnitin.option.exclude_bibliographic", true));
        context.put("value_NEW_ASSIGNMENT_REVIEW_SERVICE_EXCLUDE_BIBLIOGRAPHIC",
                (state.getAttribute(NEW_ASSIGNMENT_REVIEW_SERVICE_EXCLUDE_BIBLIOGRAPHIC) == null)
                        ? Boolean.toString(ServerConfigurationService
                                .getBoolean("turnitin.option.exclude_bibliographic.default",
                                        ServerConfigurationService.getBoolean(
                                                "turnitin.option.exclude_bibliographic", true) ? true : false))
                        : state.getAttribute(NEW_ASSIGNMENT_REVIEW_SERVICE_EXCLUDE_BIBLIOGRAPHIC));

        //exclude quoted materials
        context.put("show_NEW_ASSIGNMENT_REVIEW_SERVICE_EXCLUDE_QUOTED",
                ServerConfigurationService.getBoolean("turnitin.option.exclude_quoted", true));
        context.put("value_NEW_ASSIGNMENT_REVIEW_SERVICE_EXCLUDE_QUOTED",
                (state.getAttribute(NEW_ASSIGNMENT_REVIEW_SERVICE_EXCLUDE_QUOTED) == null)
                        ? Boolean.toString(ServerConfigurationService.getBoolean(
                                "turnitin.option.exclude_quoted.default",
                                ServerConfigurationService.getBoolean("turnitin.option.exclude_quoted", true) ? true
                                        : false))
                        : state.getAttribute(NEW_ASSIGNMENT_REVIEW_SERVICE_EXCLUDE_QUOTED));

        //exclude quoted materials
        boolean displayExcludeType = ServerConfigurationService.getBoolean("turnitin.option.exclude_smallmatches",
                true);
        context.put("show_NEW_ASSIGNMENT_REVIEW_SERVICE_EXCLUDE_SMALL_MATCHES", displayExcludeType);
        if (displayExcludeType) {
            context.put("value_NEW_ASSIGNMENT_REVIEW_SERVICE_EXCLUDE_TYPE",
                    (state.getAttribute(NEW_ASSIGNMENT_REVIEW_SERVICE_EXCLUDE_TYPE) == null)
                            ? Integer.toString(
                                    ServerConfigurationService.getInt("turnitin.option.exclude_type.default", 0))
                            : state.getAttribute(NEW_ASSIGNMENT_REVIEW_SERVICE_EXCLUDE_TYPE));
            context.put("value_NEW_ASSIGNMENT_REVIEW_SERVICE_EXCLUDE_VALUE",
                    (state.getAttribute(NEW_ASSIGNMENT_REVIEW_SERVICE_EXCLUDE_VALUE) == null)
                            ? Integer.toString(
                                    ServerConfigurationService.getInt("turnitin.option.exclude_value.default", 1))
                            : state.getAttribute(NEW_ASSIGNMENT_REVIEW_SERVICE_EXCLUDE_VALUE));
        }

        // don't show the choice when there is no Schedule tool yet
        if (state.getAttribute(CALENDAR) != null || state.getAttribute(ADDITIONAL_CALENDAR) != null)
            context.put("value_CheckAddDueDate",
                    state.getAttribute(ResourceProperties.NEW_ASSIGNMENT_CHECK_ADD_DUE_DATE));

        context.put("value_CheckHideDueDate", state.getAttribute(NEW_ASSIGNMENT_CHECK_HIDE_DUE_DATE));

        // don't show the choice when there is no Announcement tool yet
        if (state.getAttribute(ANNOUNCEMENT_CHANNEL) != null) {
            context.put("value_CheckAutoAnnounce",
                    state.getAttribute(ResourceProperties.NEW_ASSIGNMENT_CHECK_AUTO_ANNOUNCE));
            context.put("value_OpenDateNotification",
                    state.getAttribute(Assignment.ASSIGNMENT_OPENDATE_NOTIFICATION));
            // the option values
            context.put("value_opendate_notification_none", Assignment.ASSIGNMENT_OPENDATE_NOTIFICATION_NONE);
            context.put("value_opendate_notification_low", Assignment.ASSIGNMENT_OPENDATE_NOTIFICATION_LOW);
            context.put("value_opendate_notification_high", Assignment.ASSIGNMENT_OPENDATE_NOTIFICATION_HIGH);
        }

        String s = (String) state.getAttribute(NEW_ASSIGNMENT_CHECK_ADD_HONOR_PLEDGE);
        if (s == null)
            s = "1";
        context.put("value_CheckAddHonorPledge", s);

        // put resubmission option into context
        assignment_resubmission_option_into_context(context, state);

        // get all available assignments from Gradebook tool except for those created fromcategoryTable
        boolean gradebookExists = isGradebookDefined();
        if (gradebookExists) {
            GradebookService g = (GradebookService) ComponentManager
                    .get("org.sakaiproject.service.gradebook.GradebookService");
            String gradebookUid = ToolManager.getInstance().getCurrentPlacement().getContext();

            try {
                // how many gradebook assignment have been integrated with Assignment tool already
                currentAssignmentGradebookIntegrationIntoContext(context, state, g, gradebookUid,
                        a != null ? a.getTitle() : null);

                if (StringUtils.trimToNull(
                        (String) state.getAttribute(AssignmentService.NEW_ASSIGNMENT_ADD_TO_GRADEBOOK)) == null) {
                    state.setAttribute(AssignmentService.NEW_ASSIGNMENT_ADD_TO_GRADEBOOK,
                            AssignmentService.GRADEBOOK_INTEGRATION_NO);
                }

                context.put("withGradebook", Boolean.TRUE);

                // offer the gradebook integration choice only in the Assignments with Grading tool
                boolean withGrade = ((Boolean) state.getAttribute(WITH_GRADES)).booleanValue();
                if (withGrade) {
                    context.put("name_Addtogradebook", AssignmentService.NEW_ASSIGNMENT_ADD_TO_GRADEBOOK);
                    context.put("name_AssociateGradebookAssignment",
                            AssignmentService.PROP_ASSIGNMENT_ASSOCIATE_GRADEBOOK_ASSIGNMENT);
                }

                context.put("gradebookChoice",
                        state.getAttribute(AssignmentService.NEW_ASSIGNMENT_ADD_TO_GRADEBOOK));
                context.put("gradebookChoice_no", AssignmentService.GRADEBOOK_INTEGRATION_NO);
                context.put("gradebookChoice_add", AssignmentService.GRADEBOOK_INTEGRATION_ADD);
                context.put("gradebookChoice_associate", AssignmentService.GRADEBOOK_INTEGRATION_ASSOCIATE);
                String associateGradebookAssignment = (String) state
                        .getAttribute(AssignmentService.PROP_ASSIGNMENT_ASSOCIATE_GRADEBOOK_ASSIGNMENT);
                if (associateGradebookAssignment != null) {
                    context.put("associateGradebookAssignment", associateGradebookAssignment);
                    if (a != null) {
                        context.put("noAddToGradebookChoice",
                                Boolean.valueOf(associateGradebookAssignment.equals(a.getReference())
                                        || g.isAssignmentDefined(gradebookUid, a.getTitle())));
                    }
                }
            } catch (Exception e) {
                // not able to link to Gradebook
                M_log.warn(this + "setAssignmentFormContext " + e.getMessage());
            }

            if (StringUtils.trimToNull((String) state.getAttribute(NEW_ASSIGNMENT_ADD_TO_GRADEBOOK)) == null) {
                state.setAttribute(NEW_ASSIGNMENT_ADD_TO_GRADEBOOK, AssignmentService.GRADEBOOK_INTEGRATION_NO);
            }
        }

        context.put("monthTable", monthTable());
        context.put("submissionTypeTable", submissionTypeTable());
        context.put("attachments", state.getAttribute(ATTACHMENTS));
        context.put("contentTypeImageService", state.getAttribute(STATE_CONTENT_TYPE_IMAGE_SERVICE));

        String range = StringUtils.trimToNull((String) state.getAttribute(NEW_ASSIGNMENT_RANGE));
        context.put("range", range != null ? range : "site");

        String contextString = (String) state.getAttribute(STATE_CONTEXT_STRING);
        // put site object into context
        try {
            // get current site
            Site site = SiteService.getSite((String) state.getAttribute(STATE_CONTEXT_STRING));
            context.put("site", site);
        } catch (Exception ignore) {
            M_log.warn(this + ":setAssignmentFormContext " + ignore.getMessage());
        }

        if (AssignmentService.getAllowGroupAssignments()) {
            Collection groupsAllowAddAssignment = AssignmentService.getGroupsAllowAddAssignment(contextString);
            if (a != null && a.isGroup()) {
                List _valid_groups = new ArrayList();
                Iterator<Group> _it = groupsAllowAddAssignment.iterator();
                while (_it.hasNext()) {
                    Group _group = _it.next();
                    //if (_group.getProperties().get(GROUP_SECTION_PROPERTY) == null) {
                    _valid_groups.add(_group);
                    //}
                }
                groupsAllowAddAssignment = _valid_groups;
            }

            if (range == null) {
                if (AssignmentService.allowAddSiteAssignment(contextString)) {
                    // default to make site selection
                    context.put("range", "site");
                } else if (groupsAllowAddAssignment.size() > 0) {
                    // to group otherwise
                    context.put("range", "groups");
                }
            }

            // group list which user can add message to
            if (groupsAllowAddAssignment.size() > 0) {
                String sort = (String) state.getAttribute(SORTED_BY);
                String asc = (String) state.getAttribute(SORTED_ASC);
                if (sort == null
                        || (!sort.equals(SORTED_BY_GROUP_TITLE) && !sort.equals(SORTED_BY_GROUP_DESCRIPTION))) {
                    sort = SORTED_BY_GROUP_TITLE;
                    asc = Boolean.TRUE.toString();
                    state.setAttribute(SORTED_BY, sort);
                    state.setAttribute(SORTED_ASC, asc);
                }

                // SAK-26349 - need to add the collection; the iterator added below is only usable once in the velocity template
                AssignmentComparator comp = new AssignmentComparator(state, sort, asc);
                Collections.sort((List<Group>) groupsAllowAddAssignment, comp);
                context.put("groupsList", groupsAllowAddAssignment);

                context.put("groups", new SortedIterator(groupsAllowAddAssignment.iterator(), comp));
                context.put("assignmentGroups", state.getAttribute(NEW_ASSIGNMENT_GROUPS));
            }
        }

        context.put("allowGroupAssignmentsInGradebook",
                Boolean.valueOf(AssignmentService.getAllowGroupAssignmentsInGradebook()));

        // the notification email choices
        // whether the choice of emails instructor submission notification is available in the installation
        // system installation allowed assignment submission notification
        boolean allowNotification = ServerConfigurationService.getBoolean(ASSIGNMENT_INSTRUCTOR_NOTIFICATIONS,
                true);
        if (allowNotification) {
            // whether current user can receive notification. If not, don't show the notification choices in the create/edit assignment page
            allowNotification = AssignmentService.allowReceiveSubmissionNotification(contextString);
        }
        if (allowNotification) {
            context.put("name_assignment_instructor_notifications", ASSIGNMENT_INSTRUCTOR_NOTIFICATIONS);
            if (state.getAttribute(Assignment.ASSIGNMENT_INSTRUCTOR_NOTIFICATIONS_VALUE) == null) {
                // set the notification value using site default
                // whether or how the instructor receive submission notification emails, none(default)|each|digest
                state.setAttribute(Assignment.ASSIGNMENT_INSTRUCTOR_NOTIFICATIONS_VALUE,
                        ServerConfigurationService.getString(ASSIGNMENT_INSTRUCTOR_NOTIFICATIONS_DEFAULT,
                                Assignment.ASSIGNMENT_INSTRUCTOR_NOTIFICATIONS_NONE));
            }
            context.put("value_assignment_instructor_notifications",
                    state.getAttribute(Assignment.ASSIGNMENT_INSTRUCTOR_NOTIFICATIONS_VALUE));
            // the option values
            context.put("value_assignment_instructor_notifications_none",
                    Assignment.ASSIGNMENT_INSTRUCTOR_NOTIFICATIONS_NONE);
            context.put("value_assignment_instructor_notifications_each",
                    Assignment.ASSIGNMENT_INSTRUCTOR_NOTIFICATIONS_EACH);
            context.put("value_assignment_instructor_notifications_digest",
                    Assignment.ASSIGNMENT_INSTRUCTOR_NOTIFICATIONS_DIGEST);
        }

        // release grade notification option
        putReleaseGradeNotificationOptionIntoContext(state, context);

        // release grade notification option
        putReleaseResubmissionNotificationOptionIntoContext(state, context, a);

        // the supplement information
        // model answers      
        context.put("modelanswer", state.getAttribute(MODELANSWER) != null ? Boolean.TRUE : Boolean.FALSE);
        context.put("modelanswer_text", state.getAttribute(MODELANSWER_TEXT));
        context.put("modelanswer_showto", state.getAttribute(MODELANSWER_SHOWTO));
        // get attachment for model answer object
        putSupplementItemAttachmentStateIntoContext(state, context, MODELANSWER_ATTACHMENTS);
        // private notes
        context.put("allowReadAssignmentNoteItem",
                m_assignmentSupplementItemService.canReadNoteItem(a, contextString));
        context.put("allowEditAssignmentNoteItem", m_assignmentSupplementItemService.canEditNoteItem(a));
        context.put("note", state.getAttribute(NOTE) != null ? Boolean.TRUE : Boolean.FALSE);
        context.put("note_text", state.getAttribute(NOTE_TEXT));
        context.put("note_to", state.getAttribute(NOTE_SHAREWITH) != null ? state.getAttribute(NOTE_SHAREWITH)
                : String.valueOf(0));
        // all purpose item
        context.put("allPurpose", state.getAttribute(ALLPURPOSE) != null ? Boolean.TRUE : Boolean.FALSE);
        context.put("value_allPurposeTitle", state.getAttribute(ALLPURPOSE_TITLE));
        context.put("value_allPurposeText", state.getAttribute(ALLPURPOSE_TEXT));
        context.put("value_allPurposeHide",
                state.getAttribute(ALLPURPOSE_HIDE) != null ? state.getAttribute(ALLPURPOSE_HIDE) : Boolean.FALSE);
        context.put("value_allPurposeShowFrom",
                state.getAttribute(ALLPURPOSE_SHOW_FROM) != null ? state.getAttribute(ALLPURPOSE_SHOW_FROM)
                        : Boolean.FALSE);
        context.put("value_allPurposeShowTo",
                state.getAttribute(ALLPURPOSE_SHOW_TO) != null ? state.getAttribute(ALLPURPOSE_SHOW_TO)
                        : Boolean.FALSE);
        context.put("value_allPurposeAccessList", state.getAttribute(ALLPURPOSE_ACCESS));
        putTimePropertiesInContext(context, state, "allPurposeRelease", ALLPURPOSE_RELEASE_MONTH,
                ALLPURPOSE_RELEASE_DAY, ALLPURPOSE_RELEASE_YEAR, ALLPURPOSE_RELEASE_HOUR, ALLPURPOSE_RELEASE_MIN);
        putTimePropertiesInContext(context, state, "allPurposeRetract", ALLPURPOSE_RETRACT_MONTH,
                ALLPURPOSE_RETRACT_DAY, ALLPURPOSE_RETRACT_YEAR, ALLPURPOSE_RETRACT_HOUR, ALLPURPOSE_RETRACT_MIN);
        // get attachment for all purpose object
        putSupplementItemAttachmentStateIntoContext(state, context, ALLPURPOSE_ATTACHMENTS);

        // put role information into context
        HashMap<String, List> roleUsers = new HashMap<String, List>();
        try {
            AuthzGroup realm = authzGroupService.getAuthzGroup(SiteService.siteReference(contextString));
            Set<Role> roles = realm.getRoles();
            for (Iterator iRoles = roles.iterator(); iRoles.hasNext();) {
                Role r = (Role) iRoles.next();
                Set<String> users = realm.getUsersHasRole(r.getId());
                if (users != null && users.size() > 0) {
                    List<User> usersList = new ArrayList();
                    for (Iterator<String> iUsers = users.iterator(); iUsers.hasNext();) {
                        String userId = iUsers.next();
                        try {
                            User u = UserDirectoryService.getUser(userId);
                            usersList.add(u);
                        } catch (Exception e) {
                            M_log.warn(this + ":setAssignmentFormContext cannot get user " + e.getMessage()
                                    + " user id=" + userId);
                        }
                    }
                    roleUsers.put(r.getId(), usersList);
                }
            }
            context.put("roleUsers", roleUsers);
        } catch (Exception e) {
            M_log.warn(this + ":setAssignmentFormContext role cast problem " + e.getMessage() + " site ="
                    + contextString);
        }
        //Add the additional options in
        context.put("value_additionalOptions", contextAdditionalOptions);

    } // setAssignmentFormContext

    /**
     * Get a user facing String message represeting the list of file types that are accepted by the content review service
     * They appear in this form: PowerPoint (.pps, .ppt, .ppsx, .pptx), plain text (.txt), ...
     */
    private String getContentReviewAcceptedFileTypesMessage() {
        StringBuilder sb = new StringBuilder();
        Map<String, SortedSet<String>> fileTypesToExtensions = contentReviewService
                .getAcceptableFileTypesToExtensions();
        // The delimiter is a comma. Commas still need to be internationalized (the arabic comma is not the english comma)
        String i18nDelimiter = rb.getString("content_review.accepted.types.delimiter") + " ";
        String i18nLParen = " " + rb.getString("content_review.accepted.types.lparen");
        String i18nRParen = rb.getString("content_review.accepted.types.rparen");
        String fDelimiter = "";
        // don't worry about conjunctions; just separate with commas
        for (Map.Entry<String, SortedSet<String>> entry : fileTypesToExtensions.entrySet()) {
            String fileType = entry.getKey();
            SortedSet<String> extensions = entry.getValue();
            sb.append(fDelimiter).append(fileType).append(i18nLParen);
            String eDelimiter = "";
            for (String extension : extensions) {
                sb.append(eDelimiter).append(extension);
                // optimized by java compiler
                eDelimiter = i18nDelimiter;
            }
            sb.append(i18nRParen);

            // optimized by java compiler
            fDelimiter = i18nDelimiter;
        }

        return sb.toString();
    }

    /**
     * how many gradebook items has been assoicated with assignment
     * @param context
     * @param state
     */
    private void currentAssignmentGradebookIntegrationIntoContext(Context context, SessionState state,
            GradebookService g, String gradebookUid, String aTitle) {
        String contextString = (String) state.getAttribute(STATE_CONTEXT_STRING);
        // get all assignment
        Iterator iAssignments = AssignmentService.getAssignmentsForContext(contextString);
        HashMap<String, String> gAssignmentIdTitles = new HashMap<String, String>();

        HashMap<String, String> gradebookAssignmentsSelectedDisabled = new HashMap<String, String>();
        HashMap<String, String> gradebookAssignmentsLabel = new HashMap<String, String>();

        while (iAssignments.hasNext()) {
            Assignment a = (Assignment) iAssignments.next();
            String gradebookItem = StringUtils.trimToNull(a.getProperties()
                    .getProperty(AssignmentService.PROP_ASSIGNMENT_ASSOCIATE_GRADEBOOK_ASSIGNMENT));
            if (gradebookItem != null) {
                String associatedAssignmentTitles = "";
                if (gAssignmentIdTitles.containsKey(gradebookItem)) {
                    // get the current associated assignment titles first
                    associatedAssignmentTitles = gAssignmentIdTitles.get(gradebookItem) + ", ";
                }

                // append the current assignment title
                associatedAssignmentTitles += a.getTitle();

                // put the current associated assignment titles back
                gAssignmentIdTitles.put(gradebookItem, associatedAssignmentTitles);
            }
        }

        // get all assignments in Gradebook
        try {
            List gradebookAssignments = g.getAssignments(gradebookUid);
            List gradebookAssignmentsExceptSamigo = new ArrayList();

            // filtering out those from Samigo
            for (Iterator i = gradebookAssignments.iterator(); i.hasNext();) {
                org.sakaiproject.service.gradebook.shared.Assignment gAssignment = (org.sakaiproject.service.gradebook.shared.Assignment) i
                        .next();
                if (!gAssignment.isExternallyMaintained() || gAssignment.isExternallyMaintained()
                        && gAssignment.getExternalAppName().equals(getToolTitle())) {
                    gradebookAssignmentsExceptSamigo.add(gAssignment);

                    // gradebook item has been associated or not
                    String gaId = gAssignment.isExternallyMaintained() ? gAssignment.getExternalId()
                            : gAssignment.getName();
                    String status = "";
                    if (gAssignmentIdTitles.containsKey(gaId)) {
                        String assignmentTitle = gAssignmentIdTitles.get(gaId);
                        if (aTitle != null && aTitle.equals(assignmentTitle)) {
                            // this gradebook item is associated with current assignment, make it selected
                            status = "selected";
                        }
                    }

                    // check with the state variable
                    if (state.getAttribute(
                            AssignmentService.PROP_ASSIGNMENT_ASSOCIATE_GRADEBOOK_ASSIGNMENT) != null) {
                        String associatedAssignment = ((String) state
                                .getAttribute(AssignmentService.PROP_ASSIGNMENT_ASSOCIATE_GRADEBOOK_ASSIGNMENT));
                        if (associatedAssignment.equals(gaId)) {
                            status = "selected";
                        }
                    }

                    gradebookAssignmentsSelectedDisabled.put(Validator.escapeHtml(gaId), status);

                    // gradebook assignment label
                    String label = gAssignment.getName();
                    if (gAssignmentIdTitles.containsKey(gaId)) {
                        label += " ( " + rb.getFormattedMessage("usedGradebookAssignment",
                                new Object[] { gAssignmentIdTitles.get(gaId) }) + " )";
                    }
                    gradebookAssignmentsLabel.put(Validator.escapeHtml(gaId), label);
                }
            }
        } catch (GradebookNotFoundException e) {
            // exception
            M_log.debug(this + ":currentAssignmentGradebookIntegrationIntoContext "
                    + rb.getFormattedMessage("addtogradebook.alertMessage", new Object[] { e.getMessage() }));
        }
        context.put("gradebookAssignmentsSelectedDisabled", gradebookAssignmentsSelectedDisabled);

        context.put("gradebookAssignmentsLabel", gradebookAssignmentsLabel);
    }

    private void putGradebookCategoryInfoIntoContext(SessionState state, Context context) {
        HashMap<Long, String> categoryTable = categoryTable();
        if (categoryTable != null) {
            context.put("value_totalCategories", Integer.valueOf(categoryTable.size()));

            // selected category
            context.put("value_Category", state.getAttribute(NEW_ASSIGNMENT_CATEGORY));

            List<Long> categoryList = new ArrayList<Long>();
            for (Map.Entry<Long, String> entry : categoryTable.entrySet()) {
                categoryList.add(entry.getKey());
            }
            Collections.sort(categoryList);
            context.put("categoryKeys", categoryList);
            context.put("categoryTable", categoryTable());
        } else {
            context.put("value_totalCategories", Integer.valueOf(0));
        }
    }

    /**
     * put the release grade notification options into context
     * @param state
     * @param context
     */
    private void putReleaseGradeNotificationOptionIntoContext(SessionState state, Context context) {
        if (state.getAttribute(Assignment.ASSIGNMENT_RELEASEGRADE_NOTIFICATION_VALUE) == null) {
            // set the notification value using site default to be none: no email will be sent to student when the grade is released
            state.setAttribute(Assignment.ASSIGNMENT_RELEASEGRADE_NOTIFICATION_VALUE,
                    Assignment.ASSIGNMENT_RELEASEGRADE_NOTIFICATION_NONE);
        }
        // input fields
        context.put("name_assignment_releasegrade_notification", ASSIGNMENT_RELEASEGRADE_NOTIFICATION);
        context.put("value_assignment_releasegrade_notification",
                state.getAttribute(Assignment.ASSIGNMENT_RELEASEGRADE_NOTIFICATION_VALUE));
        // the option values
        context.put("value_assignment_releasegrade_notification_none",
                Assignment.ASSIGNMENT_RELEASEGRADE_NOTIFICATION_NONE);
        context.put("value_assignment_releasegrade_notification_each",
                Assignment.ASSIGNMENT_RELEASEGRADE_NOTIFICATION_EACH);
    }

    /**
    * put the release resubmission grade notification options into context
    * @param state
    * @param context
    */
    private void putReleaseResubmissionNotificationOptionIntoContext(SessionState state, Context context,
            Assignment a) {
        if (state.getAttribute(Assignment.ASSIGNMENT_RELEASERESUBMISSION_NOTIFICATION_VALUE) == null && a != null) {
            // get the assignment property for notification setting first
            state.setAttribute(Assignment.ASSIGNMENT_RELEASERESUBMISSION_NOTIFICATION_VALUE,
                    a.getProperties().getProperty(Assignment.ASSIGNMENT_RELEASERESUBMISSION_NOTIFICATION_VALUE));
        }
        if (state.getAttribute(Assignment.ASSIGNMENT_RELEASERESUBMISSION_NOTIFICATION_VALUE) == null) {
            // set the notification value using site default to be none: no email will be sent to student when the grade is released
            state.setAttribute(Assignment.ASSIGNMENT_RELEASERESUBMISSION_NOTIFICATION_VALUE,
                    Assignment.ASSIGNMENT_RELEASERESUBMISSION_NOTIFICATION_NONE);
        }
        // input fields
        context.put("name_assignment_releasereturn_notification", ASSIGNMENT_RELEASERESUBMISSION_NOTIFICATION);
        context.put("value_assignment_releasereturn_notification",
                state.getAttribute(Assignment.ASSIGNMENT_RELEASERESUBMISSION_NOTIFICATION_VALUE));
        // the option values
        context.put("value_assignment_releasereturn_notification_none",
                Assignment.ASSIGNMENT_RELEASERESUBMISSION_NOTIFICATION_NONE);
        context.put("value_assignment_releasereturn_notification_each",
                Assignment.ASSIGNMENT_RELEASERESUBMISSION_NOTIFICATION_EACH);
    }

    /**
     * build the instructor view of create a new assignment
     */
    protected String build_instructor_preview_assignment_context(VelocityPortlet portlet, Context context,
            RunData data, SessionState state) {
        context.put("time", TimeService.newTime());

        context.put("user", UserDirectoryService.getCurrentUser());

        context.put("value_Title", (String) state.getAttribute(NEW_ASSIGNMENT_TITLE));
        context.put("name_order", NEW_ASSIGNMENT_ORDER);
        context.put("value_position_order", (String) state.getAttribute(NEW_ASSIGNMENT_ORDER));

        Time openTime = getTimeFromState(state, NEW_ASSIGNMENT_OPENMONTH, NEW_ASSIGNMENT_OPENDAY,
                NEW_ASSIGNMENT_OPENYEAR, NEW_ASSIGNMENT_OPENHOUR, NEW_ASSIGNMENT_OPENMIN);
        context.put("value_OpenDate", openTime);

        if (Boolean.valueOf(ServerConfigurationService.getBoolean("assignment.visible.date.enabled", false))) {
            Time visibleTime = getTimeFromState(state, NEW_ASSIGNMENT_VISIBLEMONTH, NEW_ASSIGNMENT_VISIBLEDAY,
                    NEW_ASSIGNMENT_VISIBLEYEAR, NEW_ASSIGNMENT_VISIBLEHOUR, NEW_ASSIGNMENT_VISIBLEMIN);
            context.put("value_VisibleDate", visibleTime);
            context.put(NEW_ASSIGNMENT_VISIBLETOGGLE, visibleTime != null);
        }

        // due time
        Time dueTime = getTimeFromState(state, NEW_ASSIGNMENT_DUEMONTH, NEW_ASSIGNMENT_DUEDAY,
                NEW_ASSIGNMENT_DUEYEAR, NEW_ASSIGNMENT_DUEHOUR, NEW_ASSIGNMENT_DUEMIN);
        context.put("value_DueDate", dueTime);

        // close time
        Time closeTime = TimeService.newTime();
        Boolean enableCloseDate = (Boolean) state.getAttribute(NEW_ASSIGNMENT_ENABLECLOSEDATE);
        context.put("value_EnableCloseDate", enableCloseDate);
        if ((enableCloseDate).booleanValue()) {
            closeTime = getTimeFromState(state, NEW_ASSIGNMENT_CLOSEMONTH, NEW_ASSIGNMENT_CLOSEDAY,
                    NEW_ASSIGNMENT_CLOSEYEAR, NEW_ASSIGNMENT_CLOSEHOUR, NEW_ASSIGNMENT_CLOSEMIN);
            context.put("value_CloseDate", closeTime);
        }

        context.put("value_Sections", state.getAttribute(NEW_ASSIGNMENT_SECTION));
        context.put("value_SubmissionType", state.getAttribute(NEW_ASSIGNMENT_SUBMISSION_TYPE));
        context.put("value_GradeType", state.getAttribute(NEW_ASSIGNMENT_GRADE_TYPE));
        String maxGrade = (String) state.getAttribute(NEW_ASSIGNMENT_GRADE_POINTS);
        context.put("value_GradePoints", displayGrade(state, maxGrade, AssignmentService.getScaleFactor()));
        context.put("value_Description", state.getAttribute(NEW_ASSIGNMENT_DESCRIPTION));
        context.put("value_CheckAddDueDate",
                state.getAttribute(ResourceProperties.NEW_ASSIGNMENT_CHECK_ADD_DUE_DATE));
        context.put("value_CheckHideDueDate", state.getAttribute(NEW_ASSIGNMENT_CHECK_HIDE_DUE_DATE));
        context.put("value_CheckAutoAnnounce",
                state.getAttribute(ResourceProperties.NEW_ASSIGNMENT_CHECK_AUTO_ANNOUNCE));
        context.put("Value_OpenDateNotification", state.getAttribute(Assignment.ASSIGNMENT_OPENDATE_NOTIFICATION));
        // the option values
        context.put("value_opendate_notification_none", Assignment.ASSIGNMENT_OPENDATE_NOTIFICATION_NONE);
        context.put("value_opendate_notification_low", Assignment.ASSIGNMENT_OPENDATE_NOTIFICATION_LOW);
        context.put("value_opendate_notification_high", Assignment.ASSIGNMENT_OPENDATE_NOTIFICATION_HIGH);
        context.put("value_CheckAddHonorPledge", state.getAttribute(NEW_ASSIGNMENT_CHECK_ADD_HONOR_PLEDGE));
        context.put("honor_pledge_text",
                ServerConfigurationService.getString("assignment.honor.pledge", rb.getString("gen.honple2")));

        // SAK-17606
        context.put("value_CheckAnonymousGrading", state.getAttribute(NEW_ASSIGNMENT_CHECK_ANONYMOUS_GRADING));

        // get all available assignments from Gradebook tool except for those created from
        if (isGradebookDefined()) {
            context.put("gradebookChoice", state.getAttribute(NEW_ASSIGNMENT_ADD_TO_GRADEBOOK));
            context.put("associateGradebookAssignment",
                    state.getAttribute(AssignmentService.PROP_ASSIGNMENT_ASSOCIATE_GRADEBOOK_ASSIGNMENT));

            // information related to gradebook categories
            putGradebookCategoryInfoIntoContext(state, context);
        }

        context.put("monthTable", monthTable());
        context.put("submissionTypeTable", submissionTypeTable());
        context.put("attachments", state.getAttribute(ATTACHMENTS));

        context.put("contentTypeImageService", state.getAttribute(STATE_CONTENT_TYPE_IMAGE_SERVICE));

        context.put("preview_assignment_assignment_hide_flag",
                state.getAttribute(PREVIEW_ASSIGNMENT_ASSIGNMENT_HIDE_FLAG));
        context.put("preview_assignment_student_view_hide_flag",
                state.getAttribute(PREVIEW_ASSIGNMENT_STUDENT_VIEW_HIDE_FLAG));
        String assignmentId = StringUtils.trimToNull((String) state.getAttribute(PREVIEW_ASSIGNMENT_ASSIGNMENT_ID));
        if (assignmentId != null) {
            // editing existing assignment
            context.put("value_assignment_id", assignmentId);
            Assignment a = getAssignment(assignmentId, "build_instructor_preview_assignment_context", state);
            if (a != null) {
                context.put("isDraft", Boolean.valueOf(a.getDraft()));
                context.put("value_GradePoints", displayGrade(state, maxGrade, a.getContent().getFactor()));
            }
        } else {
            // new assignment
            context.put("isDraft", Boolean.TRUE);
        }

        context.put("value_assignmentcontent_id", state.getAttribute(PREVIEW_ASSIGNMENT_ASSIGNMENTCONTENT_ID));

        context.put("currentTime", TimeService.newTime());

        String template = (String) getContext(data).get("template");
        return template + TEMPLATE_INSTRUCTOR_PREVIEW_ASSIGNMENT;

    } // build_instructor_preview_assignment_context

    /**
     * build the instructor view to delete an assignment
     */
    protected String build_instructor_delete_assignment_context(VelocityPortlet portlet, Context context,
            RunData data, SessionState state) {
        List assignments = new ArrayList();
        List assignmentIds = (List) state.getAttribute(DELETE_ASSIGNMENT_IDS);
        HashMap<String, Integer> submissionCountTable = new HashMap<String, Integer>();
        for (int i = 0; i < assignmentIds.size(); i++) {
            String assignmentId = (String) assignmentIds.get(i);
            Assignment a = getAssignment(assignmentId, "build_instructor_delete_assignment_context", state);
            if (a != null) {
                Iterator submissions = AssignmentService.getSubmissions(a).iterator();
                int submittedCount = 0;
                while (submissions.hasNext()) {
                    AssignmentSubmission s = (AssignmentSubmission) submissions.next();
                    if (s.getSubmitted() && s.getTimeSubmitted() != null) {
                        submittedCount++;
                    }
                }
                if (submittedCount > 0) {
                    // if there is submission to the assignment, show the alert
                    addAlert(state,
                            rb.getFormattedMessage("areyousur_withSubmission", new Object[] { a.getTitle() }));
                }
                assignments.add(a);
                submissionCountTable.put(a.getReference(), Integer.valueOf(submittedCount));

            }
        }
        context.put("assignments", assignments);

        context.put("confirmMessage",
                assignments.size() > 1 ? rb.getString("areyousur_multiple") : rb.getString("areyousur_single"));
        context.put("currentTime", TimeService.newTime());
        context.put("submissionCountTable", submissionCountTable);

        String template = (String) getContext(data).get("template");
        return template + TEMPLATE_INSTRUCTOR_DELETE_ASSIGNMENT;

    } // build_instructor_delete_assignment_context

    /**
     * build the instructor view to grade an submission
     */
    protected String build_instructor_grade_submission_context(VelocityPortlet portlet, Context context,
            RunData data, SessionState state) {
        String submissionId = "";
        int gradeType = -1;

        // need to show the alert for grading drafts?
        boolean addGradeDraftAlert = false;

        // assignment
        String assignmentId = (String) state.getAttribute(GRADE_SUBMISSION_ASSIGNMENT_ID);
        Assignment a = getAssignment(assignmentId, "build_instructor_grade_submission_context", state);
        if (a != null) {
            context.put("assignment", a);
            if (a.getContent() != null) {
                gradeType = a.getContent().getTypeOfGrade();
            }

            // SAK-17606
            state.setAttribute(NEW_ASSIGNMENT_CHECK_ANONYMOUS_GRADING,
                    a.getProperties().getProperty(NEW_ASSIGNMENT_CHECK_ANONYMOUS_GRADING));

            boolean allowToGrade = true;
            String associateGradebookAssignment = StringUtils.trimToNull(a.getProperties()
                    .getProperty(AssignmentService.PROP_ASSIGNMENT_ASSOCIATE_GRADEBOOK_ASSIGNMENT));
            if (associateGradebookAssignment != null) {
                GradebookService g = (GradebookService) ComponentManager
                        .get("org.sakaiproject.service.gradebook.GradebookService");
                String gradebookUid = ToolManager.getInstance().getCurrentPlacement().getContext();
                if (g != null && g.isGradebookDefined(gradebookUid)) {
                    if (!g.currentUserHasGradingPerm(gradebookUid)) {
                        context.put("notAllowedToGradeWarning", rb.getString("not_allowed_to_grade_in_gradebook"));
                        allowToGrade = false;
                    }
                }
            }
            context.put("allowToGrade", Boolean.valueOf(allowToGrade));
        }

        // assignment submission
        AssignmentSubmission s = getSubmission((String) state.getAttribute(GRADE_SUBMISSION_SUBMISSION_ID),
                "build_instructor_grade_submission_context", state);
        if (s != null) {
            submissionId = s.getId();
            context.put("submission", s);

            if (a != null) {
                setScoringAgentProperties(context, a, s, true);
            }

            // show alert if student is working on a draft
            if (!s.getSubmitted() // not submitted
                    && ((s.getSubmittedText() != null && s.getSubmittedText().length() > 0) // has some text
                            || (s.getSubmittedAttachments() != null && s.getSubmittedAttachments().size() > 0))) // has some attachment
            {
                if (s.getCloseTime().after(TimeService.newTime())) {
                    // not pass the close date yet
                    addGradeDraftAlert = true;
                } else {
                    // passed the close date already
                    addGradeDraftAlert = false;
                }
            }

            ResourceProperties p = s.getProperties();
            if (p.getProperty(ResourceProperties.PROP_SUBMISSION_PREVIOUS_FEEDBACK_TEXT) != null) {
                context.put("prevFeedbackText",
                        p.getProperty(ResourceProperties.PROP_SUBMISSION_PREVIOUS_FEEDBACK_TEXT));
            }

            if (p.getProperty(ResourceProperties.PROP_SUBMISSION_PREVIOUS_FEEDBACK_COMMENT) != null) {
                context.put("prevFeedbackComment",
                        p.getProperty(ResourceProperties.PROP_SUBMISSION_PREVIOUS_FEEDBACK_COMMENT));
            }

            if (p.getProperty(PROP_SUBMISSION_PREVIOUS_FEEDBACK_ATTACHMENTS) != null) {
                context.put("prevFeedbackAttachments", getPrevFeedbackAttachments(p));
            }

            // put the re-submission info into context
            putTimePropertiesInContext(context, state, "Resubmit", ALLOW_RESUBMIT_CLOSEMONTH,
                    ALLOW_RESUBMIT_CLOSEDAY, ALLOW_RESUBMIT_CLOSEYEAR, ALLOW_RESUBMIT_CLOSEHOUR,
                    ALLOW_RESUBMIT_CLOSEMIN);
            assignment_resubmission_option_into_context(context, state);
        }

        context.put("user", state.getAttribute(STATE_USER));
        context.put("submissionTypeTable", submissionTypeTable());
        context.put("instructorAttachments", state.getAttribute(ATTACHMENTS));
        context.put("contentTypeImageService", state.getAttribute(STATE_CONTENT_TYPE_IMAGE_SERVICE));
        context.put("service", AssignmentService.getInstance());

        // names
        context.put("name_grade_assignment_id", GRADE_SUBMISSION_ASSIGNMENT_ID);
        context.put("name_feedback_comment", GRADE_SUBMISSION_FEEDBACK_COMMENT);
        context.put("name_feedback_text", GRADE_SUBMISSION_FEEDBACK_TEXT);
        context.put("name_feedback_attachment", GRADE_SUBMISSION_FEEDBACK_ATTACHMENT);
        context.put("name_grade", GRADE_SUBMISSION_GRADE);
        context.put("name_allowResubmitNumber", AssignmentSubmission.ALLOW_RESUBMIT_NUMBER);

        // values
        context.put("value_year_from", state.getAttribute(NEW_ASSIGNMENT_YEAR_RANGE_FROM));
        context.put("value_year_to", state.getAttribute(NEW_ASSIGNMENT_YEAR_RANGE_TO));
        context.put("value_grade_assignment_id", state.getAttribute(GRADE_SUBMISSION_ASSIGNMENT_ID));
        context.put("value_feedback_comment", state.getAttribute(GRADE_SUBMISSION_FEEDBACK_COMMENT));
        context.put("value_feedback_text", state.getAttribute(GRADE_SUBMISSION_FEEDBACK_TEXT));
        context.put("value_feedback_attachment", state.getAttribute(ATTACHMENTS));

        // SAK-17606
        context.put("value_CheckAnonymousGrading", state.getAttribute(NEW_ASSIGNMENT_CHECK_ANONYMOUS_GRADING));

        // format to show one decimal place in grade
        context.put("value_grade",
                (gradeType == 3)
                        ? displayGrade(state, (String) state.getAttribute(GRADE_SUBMISSION_GRADE),
                                a.getContent().getFactor())
                        : state.getAttribute(GRADE_SUBMISSION_GRADE));

        // try to put in grade overrides
        if (a.isGroup()) {
            Map<String, Object> _ugrades = new HashMap();
            User[] _users = s.getSubmitters();
            for (int i = 0; _users != null && i < _users.length; i++) {
                if (state.getAttribute(GRADE_SUBMISSION_GRADE + "_" + _users[i].getId()) != null) {
                    _ugrades.put(_users[i].getId(),
                            gradeType == 3
                                    ? displayGrade(state,
                                            (String) state
                                                    .getAttribute(GRADE_SUBMISSION_GRADE + "_" + _users[i].getId()),
                                            a.getContent().getFactor())
                                    : state.getAttribute(GRADE_SUBMISSION_GRADE + "_" + _users[i].getId()));
                }
            }
            context.put("value_grades", _ugrades);
        }

        context.put("assignment_expand_flag", state.getAttribute(GRADE_SUBMISSION_ASSIGNMENT_EXPAND_FLAG));

        // is this a non-electronic submission type of assignment
        context.put("nonElectronic",
                (a != null
                        && a.getContent().getTypeOfSubmission() == Assignment.NON_ELECTRONIC_ASSIGNMENT_SUBMISSION)
                                ? Boolean.TRUE
                                : Boolean.FALSE);

        if (addGradeDraftAlert) {
            addAlert(state, rb.getString("grading.alert.draft.beforeclosedate"));
        }
        context.put("alertGradeDraft", Boolean.valueOf(addGradeDraftAlert));

        if (a != null && a.isGroup()) {
            checkForUsersInMultipleGroups(a, s.getSubmitterIds(), state,
                    rb.getString("group.user.multiple.warning"));
        }

        // SAK-29314
        // Since USER_SUBMISSIONS is restricted to the page size, it is not very useful here
        // Therefore, we will prefer to use STATE_PAGEING_TOTAL_ITEMS. However, sometimes this contains
        // Assignment objects instead of SubmitterSubmission objects, so we have to fall back to USER_SUBMISSIONS
        // if this occurs, although in practise this seems to never happen
        List<SubmitterSubmission> userSubmissions = Collections.EMPTY_LIST;
        List totalItems = (List) state.getAttribute(STATE_PAGEING_TOTAL_ITEMS);
        if (!CollectionUtils.isEmpty(totalItems)) {
            if (totalItems.get(0) instanceof SubmitterSubmission) {
                userSubmissions = (List<SubmitterSubmission>) totalItems;
            }
        }

        if (userSubmissions.isEmpty()) {
            userSubmissions = (List<SubmitterSubmission>) state.getAttribute(USER_SUBMISSIONS);
        }

        // SAK-29314
        resetNavOptions();
        if (userSubmissions != null) {
            for (int index = 0; index < userSubmissions.size(); index++) {
                if (((SubmitterSubmission) userSubmissions.get(index)).getSubmission().getId()
                        .equals(submissionId)) {
                    // Determine next/previous
                    boolean goPT = false;
                    boolean goNT = false;
                    if (index > 0) {
                        goPT = true;
                    }
                    if (index < userSubmissions.size() - 1) {
                        goNT = true;
                    }

                    // Determine next ungraded, next with submission, next ungraded with submission
                    for (int i = index + 1; i < userSubmissions.size(); i++) {
                        if (!nextUngraded) {
                            processIfUngraded(userSubmissions.get(i).getSubmission(), true);
                        }

                        if (!nextWithSubmission) {
                            processIfHasSubmission(userSubmissions.get(i).getSubmission(), true);
                        }

                        if (!nextUngradedWithSubmission) {
                            processIfHasUngradedSubmission(userSubmissions.get(i).getSubmission(), true);
                        }

                        if (nextUngraded && nextWithSubmission && nextUngradedWithSubmission) {
                            break;
                        }
                    }

                    // Determine previous ungraded, previous with submission, previous ungraded with submission
                    for (int i = index - 1; i >= 0; i--) {
                        if (!prevUngraded) {
                            processIfUngraded(userSubmissions.get(i).getSubmission(), false);
                        }

                        if (!prevWithSubmission) {
                            processIfHasSubmission(userSubmissions.get(i).getSubmission(), false);
                        }

                        if (!prevUngradedWithSubmission) {
                            processIfHasUngradedSubmission(userSubmissions.get(i).getSubmission(), false);
                        }

                        if (prevUngraded && prevWithSubmission && prevUngradedWithSubmission) {
                            break;
                        }
                    }

                    // Determine if subs only was previously selected
                    boolean subsOnlySelected = false;
                    if (state.getAttribute(STATE_VIEW_SUBS_ONLY) != null) {
                        subsOnlySelected = (Boolean) state.getAttribute(STATE_VIEW_SUBS_ONLY);
                        context.put(CONTEXT_VIEW_SUBS_ONLY, subsOnlySelected);
                    }

                    // Get the previous/next ids as necessary
                    if (goPT) {
                        context.put("prevSubmissionId", ((SubmitterSubmission) userSubmissions.get(index - 1))
                                .getSubmission().getReference());
                    }
                    if (goNT) {
                        context.put("nextSubmissionId", ((SubmitterSubmission) userSubmissions.get(index + 1))
                                .getSubmission().getReference());
                    }
                    if (nextUngraded) {
                        context.put(CONTEXT_NEXT_UNGRADED_SUB_ID, nextUngradedRef);
                    }
                    if (prevUngraded) {
                        context.put(CONTEXT_PREV_UNGRADED_SUB_ID, prevUngradedRef);
                    }
                    if (nextWithSubmission) {
                        context.put(CONTEXT_NEXT_WITH_SUB_ID, nextWithSubmissionRef);
                    }
                    if (prevWithSubmission) {
                        context.put(CONTEXT_PREV_WITH_SUB_ID, prevWithSubmissionRef);
                    }
                    if (nextUngradedWithSubmission) {
                        context.put(CONTEXT_NEXT_UNGRADED_WITH_SUB_ID, nextUngradedWithSubmissionRef);
                    }
                    if (prevUngradedWithSubmission) {
                        context.put(CONTEXT_PREV_UNGRADED_WITH_SUB_ID, prevUngradedWithSubmissionRef);
                    }

                    // Alter any enabled/disabled states if view subs only is selected
                    if (subsOnlySelected) {
                        if (!nextWithSubmission) {
                            goNT = false;
                        }
                        if (!prevWithSubmission) {
                            goPT = false;
                        }
                        if (!nextUngradedWithSubmission) {
                            nextUngraded = false;
                        }
                        if (!prevUngradedWithSubmission) {
                            prevUngraded = false;
                        }
                    }

                    // Put the button enable/disable flags into the context
                    context.put("goPTButton", goPT);
                    context.put("goNTButton", goNT);
                    context.put(CONTEXT_GO_NEXT_UNGRADED_ENABLED, nextUngraded);
                    context.put(CONTEXT_GO_PREV_UNGRADED_ENABLED, prevUngraded);
                }
            }
        }

        // put supplement item into context
        supplementItemIntoContext(state, context, a, null);

        // put the grade confirmation message if applicable
        if (state.getAttribute(GRADE_SUBMISSION_DONE) != null) {
            context.put("gradingDone", Boolean.TRUE);
            state.removeAttribute(GRADE_SUBMISSION_DONE);
        }

        // put the grade confirmation message if applicable
        if (state.getAttribute(GRADE_SUBMISSION_SUBMIT) != null) {
            context.put("gradingSubmit", Boolean.TRUE);
            state.removeAttribute(GRADE_SUBMISSION_SUBMIT);
        }

        // letter grading
        letterGradeOptionsIntoContext(context);

        String template = (String) getContext(data).get("template");
        return template + TEMPLATE_INSTRUCTOR_GRADE_SUBMISSION;

    } // build_instructor_grade_submission_context

    /**
     * SAK-29314 - Resets all navigation options
     */
    private void resetNavOptions() {
        nextUngraded = false;
        prevUngraded = false;
        nextWithSubmission = false;
        prevWithSubmission = false;
        nextUngradedWithSubmission = false;
        prevUngradedWithSubmission = false;
        nextUngradedRef = "";
        prevUngradedRef = "";
        nextWithSubmissionRef = "";
        prevWithSubmissionRef = "";
        nextUngradedWithSubmissionRef = "";
        prevUngradedWithSubmissionRef = "";
    }

    /**
     * SAK-29314 - Reset the appropriate navigation options
     * 
     * @param flag denotes which navigation options to reset
     */
    private void resetNavOptions(String flag) {
        if (null != flag) {
            switch (flag) {
            case FLAG_NEXT_UNGRADED:
                nextUngraded = false;
                nextUngradedRef = "";
                break;
            case FLAG_PREV_UNGRADED:
                prevUngraded = false;
                prevUngradedRef = "";
                break;
            case FLAG_NEXT_WITH_SUB:
                nextWithSubmission = false;
                nextWithSubmissionRef = "";
                break;
            case FLAG_PREV_WITH_SUB:
                prevWithSubmission = false;
                prevWithSubmissionRef = "";
                break;
            case FLAG_NEXT_UNGRADED_WITH_SUB:
                nextUngradedWithSubmission = false;
                nextUngradedWithSubmissionRef = "";
                break;
            case FLAG_PREV_UNGRADED_WITH_SUB:
                prevUngradedWithSubmission = false;
                prevUngradedWithSubmissionRef = "";
                break;
            }
        }
    }

    /**
     * SAK-29314 - Apply the appropriate navigation options
     * 
     * @param flag denotes the navigation options to apply
     * @param submission the submission object in question
     */
    private void applyNavOption(String flag, AssignmentSubmission submission) {
        if (null != flag) {
            switch (flag) {
            case FLAG_NEXT_UNGRADED:
                nextUngraded = true;
                nextUngradedRef = submission.getReference();
                break;
            case FLAG_PREV_UNGRADED:
                prevUngraded = true;
                prevUngradedRef = submission.getReference();
                break;
            case FLAG_NEXT_WITH_SUB:
                nextWithSubmission = true;
                nextWithSubmissionRef = submission.getReference();
                break;
            case FLAG_PREV_WITH_SUB:
                prevWithSubmission = true;
                prevWithSubmissionRef = submission.getReference();
                break;
            case FLAG_NEXT_UNGRADED_WITH_SUB:
                nextUngradedWithSubmission = true;
                nextUngradedWithSubmissionRef = submission.getReference();
                break;
            case FLAG_PREV_UNGRADED_WITH_SUB:
                prevUngradedWithSubmission = true;
                prevUngradedWithSubmissionRef = submission.getReference();
                break;
            }
        }
    }

    /**
     * SAK-29314 - Determine if the given assignment submission is graded or not, whether
     * it has an actual 'submission' or not.
     * 
     * @param submission - the submission to be checked
     * @param isNext - true/false; is for next submission (true), or previous (false)
     */
    private void processIfUngraded(AssignmentSubmission submission, boolean isNext) {
        String flag = isNext ? FLAG_NEXT_UNGRADED : FLAG_PREV_UNGRADED;
        resetNavOptions(flag);

        // If the submission is ungraded, set the appropriate flag and reference; return true
        if (!submission.getGraded()) {
            applyNavOption(flag, submission);
        }
    }

    /**
     * SAK-29314 - Determine if the given assignment submission actually has a user submission
     * 
     * @param submission - the submission to be checked
     * @param isNext - true/false; is for the next submission (true), or previous (false)
     */
    private void processIfHasSubmission(AssignmentSubmission submission, boolean isNext) {
        String flag = isNext ? FLAG_NEXT_WITH_SUB : FLAG_PREV_WITH_SUB;
        resetNavOptions(flag);

        // If the submission is actually a submission, set the appropriate flag and reference; return true
        if (!NO_SUBMISSION.equals(submission.getStatus()) && submission.isUserSubmission()) {
            applyNavOption(flag, submission);
        }
    }

    /**
     * SAK-29314 - Determine if the given assignment submission actually has a submission
     * and is ungraded.
     * 
     * @param submission - the submission to be checked
     * @param isNext - true/false; is for the next submission (true), or previous (false)
     */
    private void processIfHasUngradedSubmission(AssignmentSubmission submission, boolean isNext) {
        String flag = isNext ? FLAG_NEXT_UNGRADED_WITH_SUB : FLAG_PREV_UNGRADED_WITH_SUB;
        resetNavOptions(flag);

        // If the submisison is actually a submission and is ungraded, set the appropriate flag and reference; return true
        if (!submission.getGraded() && !NO_SUBMISSION.equals(submission.getStatus())
                && submission.isUserSubmission()) {
            applyNavOption(flag, submission);
        }
    }

    /**
     * Checks whether the time is already past. 
     * If yes, return the time of three days from current time; 
     * Otherwise, return the original time
     * @param originalTime
     * @return
     */
    private Time getProperFutureTime(Time originalTime) {
        // check whether the time is past already. 
        // If yes, add three days to the current time
        Time time = originalTime;
        if (TimeService.newTime().after(time)) {
            time = TimeService.newTime(TimeService.newTime().getTime() + 3 * 24 * 60 * 60 * 1000/*add three days*/);
        }

        return time;
    }

    public void doPrev_back_next_submission_review(RunData rundata, String option, boolean submit) {
        if (!"POST".equals(rundata.getRequest().getMethod())) {
            return;
        }

        SessionState state = ((JetspeedRunData) rundata)
                .getPortletSessionState(((JetspeedRunData) rundata).getJs_peid());
        // save the instructor input
        boolean hasChange = saveReviewGradeForm(rundata, state, submit ? "submit" : "save");

        if (state.getAttribute(STATE_MESSAGE) == null) {
            ParameterParser params = rundata.getParameters();
            List<String> submissionIds = new ArrayList<String>();
            if (state.getAttribute(USER_SUBMISSIONS) != null) {
                submissionIds = (List<String>) state.getAttribute(USER_SUBMISSIONS);
            }

            String submissionId = null;
            String assessorId = null;
            if ("next".equals(option)) {
                submissionId = params.get("nextSubmissionId");
                assessorId = params.get("nextAssessorId");
            } else if ("prev".equals(option)) {
                submissionId = params.get("prevSubmissionId");
                assessorId = params.get("prevAssessorId");
            } else if ("back".equals(option)) {
                String assignmentId = (String) state.getAttribute(VIEW_ASSIGNMENT_ID);
                List userSubmissionsState = state.getAttribute(STATE_PAGEING_TOTAL_ITEMS) != null
                        ? (List) state.getAttribute(STATE_PAGEING_TOTAL_ITEMS)
                        : null;
                if (userSubmissionsState != null && userSubmissionsState.size() > 0
                        && userSubmissionsState.get(0) instanceof SubmitterSubmission
                        && AssignmentService.allowGradeSubmission(assignmentId)) {
                    //coming from instructor view submissions page
                    state.setAttribute(STATE_MODE, MODE_INSTRUCTOR_GRADE_ASSIGNMENT);
                } else {
                    state.setAttribute(STATE_MODE, MODE_LIST_ASSIGNMENTS);
                }
            }
            if (submissionId != null && submissionIds.contains(submissionId)) {
                state.setAttribute(GRADE_SUBMISSION_SUBMISSION_ID, submissionId);
            }
            if (assessorId != null) {
                state.setAttribute(PEER_ASSESSMENT_ASSESSOR_ID, assessorId);
            }
        }
    }

    /**
     * Responding to the request of submission navigation
     * @param rundata
     * @param option
     */
    public void doPrev_back_next_submission(RunData rundata, String option) {
        if (!"POST".equals(rundata.getRequest().getMethod())) {
            return;
        }

        SessionState state = ((JetspeedRunData) rundata)
                .getPortletSessionState(((JetspeedRunData) rundata).getJs_peid());
        // save the instructor input
        boolean hasChange = readGradeForm(rundata, state, "save");
        if (state.getAttribute(STATE_MESSAGE) == null && hasChange) {
            grade_submission_option(rundata, "save");
        }

        if (state.getAttribute(STATE_MESSAGE) == null) {
            if ("back".equals(option)) {
                // SAK-29314 - calculate our position relative to the list so we can return to the correct page
                state.setAttribute(STATE_GOTO_PAGE, calcPageFromSubmission(state));
                state.setAttribute(STATE_MODE, MODE_INSTRUCTOR_GRADE_ASSIGNMENT);
            } else if ("backListStudent".equals(option)) {
                state.setAttribute(STATE_MODE, MODE_INSTRUCTOR_VIEW_STUDENTS_ASSIGNMENT);
            } else if (option.startsWith(FLAG_NEXT) || option.startsWith(FLAG_PREV)) {
                // SAK-29314
                ParameterParser params = rundata.getParameters();
                String submissionsOnlySelected = (String) params.getString(PARAMS_VIEW_SUBS_ONLY_CHECKBOX);
                if (FLAG_ON.equals(submissionsOnlySelected)) {
                    switch (option) {
                    case FLAG_NEXT:
                        navigateToSubmission(rundata, CONTEXT_NEXT_WITH_SUB_ID);
                        break;
                    case FLAG_PREV:
                        navigateToSubmission(rundata, CONTEXT_PREV_WITH_SUB_ID);
                        break;
                    case FLAG_NEXT_UNGRADED:
                        navigateToSubmission(rundata, CONTEXT_NEXT_UNGRADED_WITH_SUB_ID);
                        break;
                    case FLAG_PREV_UNGRADED:
                        navigateToSubmission(rundata, CONTEXT_PREV_UNGRADED_WITH_SUB_ID);
                        break;
                    }
                } else {
                    switch (option) {
                    case FLAG_NEXT:
                        navigateToSubmission(rundata, "nextSubmissionId");
                        break;
                    case FLAG_PREV:
                        navigateToSubmission(rundata, "prevSubmissionId");
                        break;
                    case FLAG_NEXT_UNGRADED:
                        navigateToSubmission(rundata, CONTEXT_NEXT_UNGRADED_SUB_ID);
                        break;
                    case FLAG_PREV_UNGRADED:
                        navigateToSubmission(rundata, CONTEXT_PREV_UNGRADED_SUB_ID);
                        break;
                    }
                }
            }
        }

    } // doPrev_back_next_submission

    /**
     * SAK-29314 - Calculate the page of the submission list that the current submission belongs to
     * 
     * @param state
     * @return 
     */
    private Integer calcPageFromSubmission(SessionState state) {
        int pageSize = 1;
        try {
            pageSize = Integer.parseInt(state.getAttribute(STATE_PAGESIZE).toString());
        } catch (NumberFormatException ex) {
            M_log.debug(ex);
        }

        if (pageSize <= 1) {
            return 1;
        }

        String submissionId = state.getAttribute(GRADE_SUBMISSION_SUBMISSION_ID).toString();
        List<SubmitterSubmission> subs = (List<SubmitterSubmission>) state.getAttribute(STATE_PAGEING_TOTAL_ITEMS);
        int subIndex = 0;

        for (int i = 0; i < subs.size(); ++i) {
            SubmitterSubmission sub = subs.get(i);
            String ref = sub.getSubmission().getReference();
            if (ref.equals(submissionId)) {
                subIndex = i;
                break;
            }
        }

        int page = subIndex / pageSize + 1;
        return page;
    }

    private void navigateToSubmission(RunData rundata, String paramString) {
        ParameterParser params = rundata.getParameters();
        SessionState state = ((JetspeedRunData) rundata)
                .getPortletSessionState(((JetspeedRunData) rundata).getJs_peid());
        String assignmentId = (String) state.getAttribute(GRADE_SUBMISSION_ASSIGNMENT_ID);
        String submissionId = StringUtils.trimToNull(params.getString(paramString));
        // SAK-29314 - put submission information into state
        boolean viewSubsOnlySelected = stringToBool((String) params.getString(PARAMS_VIEW_SUBS_ONLY_CHECKBOX));
        if (submissionId != null) {
            // put submission information into state
            putSubmissionInfoIntoState(state, assignmentId, submissionId, viewSubsOnlySelected);
        }
    }

    /**
     * SAK-29314 - Convert the given string into a boolean value
     *
     * @param boolString - the string to be parsed to boolean (may be 'on'/'off' or 'true'/'false')
     * @return the boolean value representing the string given
     */
    private boolean stringToBool(String boolString) {
        return FLAG_ON.equals(boolString) || FLAG_TRUE.equals(boolString);
    }

    /**
     * Parse time value and put corresponding values into state
     * @param context
     * @param state
     * @param a
     * @param timeValue
     * @param timeName
     * @param month
     * @param day
     * @param year
     * @param hour
     * @param min
     */
    private void putTimePropertiesInState(SessionState state, Time timeValue, String month, String day, String year,
            String hour, String min) {
        TimeBreakdown bTime = null;
        try {
            bTime = timeValue.breakdownLocal();
        } catch (NullPointerException _npe) {
            bTime = TimeService.newTime().breakdownLocal();
            bTime.setHour(12);
            bTime.setMin(0);
        }
        state.setAttribute(month, Integer.valueOf(bTime.getMonth()));
        state.setAttribute(day, Integer.valueOf(bTime.getDay()));
        state.setAttribute(year, Integer.valueOf(bTime.getYear()));
        state.setAttribute(hour, Integer.valueOf(bTime.getHour()));
        state.setAttribute(min, Integer.valueOf(bTime.getMin()));
    }

    /**
     * put related time information into context variable
     * @param context
     * @param state
     * @param timeName
     * @param month
     * @param day
     * @param year
     * @param hour
     * @param min
     */
    private void putTimePropertiesInContext(Context context, SessionState state, String timeName, String month,
            String day, String year, String hour, String min) {
        // get the submission level of close date setting
        context.put("name_" + timeName + "Month", month);
        context.put("name_" + timeName + "Day", day);
        context.put("name_" + timeName + "Year", year);
        context.put("name_" + timeName + "Hour", hour);
        context.put("name_" + timeName + "Min", min);
        context.put("value_" + timeName + "Month", (Integer) state.getAttribute(month));
        context.put("value_" + timeName + "Day", (Integer) state.getAttribute(day));
        context.put("value_" + timeName + "Year", (Integer) state.getAttribute(year));
        context.put("value_" + timeName + "Hour", (Integer) state.getAttribute(hour));
        context.put("value_" + timeName + "Min", (Integer) state.getAttribute(min));
    }

    private List getPrevFeedbackAttachments(ResourceProperties p) {
        String attachmentsString = p.getProperty(PROP_SUBMISSION_PREVIOUS_FEEDBACK_ATTACHMENTS);
        String[] attachmentsReferences = attachmentsString.split(",");
        List prevFeedbackAttachments = EntityManager.newReferenceList();
        for (int k = 0; k < attachmentsReferences.length; k++) {
            prevFeedbackAttachments.add(EntityManager.newReference(attachmentsReferences[k]));
        }
        return prevFeedbackAttachments;
    }

    /**
     * build the instructor preview of grading submission
     */
    protected String build_instructor_preview_grade_submission_context(VelocityPortlet portlet, Context context,
            RunData data, SessionState state) {

        // assignment
        int gradeType = -1;
        String assignmentId = (String) state.getAttribute(GRADE_SUBMISSION_ASSIGNMENT_ID);
        Assignment a = getAssignment(assignmentId, "build_instructor_preview_grade_submission_context", state);
        if (a != null) {
            context.put("assignment", a);
            gradeType = a.getContent().getTypeOfGrade();
        }

        // submission      
        AssignmentSubmission submission = getSubmission((String) state.getAttribute(GRADE_SUBMISSION_SUBMISSION_ID),
                "build_instructor_preview_grade_submission_context", state);
        context.put("submission", submission);

        if (a != null) {
            setScoringAgentProperties(context, a, submission, false);
        }

        User user = (User) state.getAttribute(STATE_USER);
        context.put("user", user);
        context.put("submissionTypeTable", submissionTypeTable());
        context.put("contentTypeImageService", state.getAttribute(STATE_CONTENT_TYPE_IMAGE_SERVICE));
        context.put("service", AssignmentService.getInstance());

        // filter the feedback text for the instructor comment and mark it as red
        String feedbackText = (String) state.getAttribute(GRADE_SUBMISSION_FEEDBACK_TEXT);
        context.put("feedback_comment", state.getAttribute(GRADE_SUBMISSION_FEEDBACK_COMMENT));
        context.put("feedback_text", feedbackText);
        context.put("feedback_attachment", state.getAttribute(GRADE_SUBMISSION_FEEDBACK_ATTACHMENT));

        // SAK-17606
        context.put("value_CheckAnonymousGrading", state.getAttribute(NEW_ASSIGNMENT_CHECK_ANONYMOUS_GRADING));

        // format to show "factor" decimal places
        String grade = (String) state.getAttribute(GRADE_SUBMISSION_GRADE);
        if (gradeType == 3) {
            grade = displayGrade(state, grade, submission.getAssignment().getContent().getFactor());
        }
        context.put("grade", grade);

        context.put("comment_open", COMMENT_OPEN);
        context.put("comment_close", COMMENT_CLOSE);

        context.put("allowResubmitNumber", state.getAttribute(AssignmentSubmission.ALLOW_RESUBMIT_NUMBER));
        String closeTimeString = (String) state.getAttribute(AssignmentSubmission.ALLOW_RESUBMIT_CLOSETIME);
        if (closeTimeString != null) {
            // close time for resubmit
            Time time = TimeService.newTime(Long.parseLong(closeTimeString));
            context.put("allowResubmitCloseTime", time.toStringLocalFull());
        }

        String template = (String) getContext(data).get("template");
        return template + TEMPLATE_INSTRUCTOR_PREVIEW_GRADE_SUBMISSION;

    } // build_instructor_preview_grade_submission_context

    /**
     * build the instructor view to grade an assignment
     */
    protected String build_instructor_grade_assignment_context(VelocityPortlet portlet, Context context,
            RunData data, SessionState state) {
        context.put("user", state.getAttribute(STATE_USER));

        // sorting related fields
        context.put("sortedBy", state.getAttribute(SORTED_GRADE_SUBMISSION_BY));
        context.put("sortedAsc", state.getAttribute(SORTED_GRADE_SUBMISSION_ASC));
        context.put("sort_lastName", SORTED_GRADE_SUBMISSION_BY_LASTNAME);
        context.put("sort_submitTime", SORTED_GRADE_SUBMISSION_BY_SUBMIT_TIME);
        context.put("sort_submitStatus", SORTED_GRADE_SUBMISSION_BY_STATUS);
        context.put("sort_submitGrade", SORTED_GRADE_SUBMISSION_BY_GRADE);
        context.put("sort_submitReleased", SORTED_GRADE_SUBMISSION_BY_RELEASED);
        context.put("sort_submitReview", SORTED_GRADE_SUBMISSION_CONTENTREVIEW);
        context.put("userDirectoryService", UserDirectoryService.getInstance());

        String assignmentRef = (String) state.getAttribute(EXPORT_ASSIGNMENT_REF);
        Assignment assignment = getAssignment(assignmentRef, "build_instructor_grade_assignment_context", state);

        // getContent() early and store it, this call is expensive, always making a db call due to lack of caching in this tool
        AssignmentContent assignmentContent = assignment == null ? null : assignment.getContent();

        if (assignment != null) {
            context.put("assignment", assignment);
            state.setAttribute(EXPORT_ASSIGNMENT_ID, assignment.getId());
            if (assignmentContent != null) {
                context.put("assignmentContent", assignmentContent);
                context.put("value_SubmissionType", Integer.valueOf(assignmentContent.getTypeOfSubmission()));
                context.put("typeOfGrade", assignmentContent.getTypeOfGrade());
            }

            // put creator information into context
            putCreatorIntoContext(context, assignment);

            String defaultGrade = assignment.getProperties().getProperty(GRADE_NO_SUBMISSION_DEFAULT_GRADE);
            if (defaultGrade != null) {
                context.put("defaultGrade", defaultGrade);
            }

            initViewSubmissionListOption(state);

            String view = (String) state.getAttribute(VIEW_SUBMISSION_LIST_OPTION);
            context.put("view", view);

            context.put("searchString",
                    state.getAttribute(VIEW_SUBMISSION_SEARCH) != null ? state.getAttribute(VIEW_SUBMISSION_SEARCH)
                            : "");

            // access point url for zip file download
            String contextString = (String) state.getAttribute(STATE_CONTEXT_STRING);
            String accessPointUrl = ServerConfigurationService.getAccessUrl().concat(AssignmentService
                    .submissionsZipReference(contextString, (String) state.getAttribute(EXPORT_ASSIGNMENT_REF)));
            if (view != null && !AssignmentConstants.ALL.equals(view)) {
                // append the group info to the end
                accessPointUrl = accessPointUrl.concat(view);
            }
            context.put("accessPointUrl", accessPointUrl);

            // SAK-17606
            state.setAttribute(NEW_ASSIGNMENT_CHECK_ANONYMOUS_GRADING,
                    assignment.getProperties().getProperty(NEW_ASSIGNMENT_CHECK_ANONYMOUS_GRADING));

            if (AssignmentService.getAllowGroupAssignments()) {
                Collection groupsAllowGradeAssignment = AssignmentService.getGroupsAllowGradeAssignment(
                        (String) state.getAttribute(STATE_CONTEXT_STRING), assignment.getReference());

                // group list which user can add message to
                if (groupsAllowGradeAssignment.size() > 0) {
                    String sort = (String) state.getAttribute(SORTED_BY);
                    String asc = (String) state.getAttribute(SORTED_ASC);
                    if (sort == null
                            || (!sort.equals(SORTED_BY_GROUP_TITLE) && !sort.equals(SORTED_BY_GROUP_DESCRIPTION))) {
                        sort = SORTED_BY_GROUP_TITLE;
                        asc = Boolean.TRUE.toString();
                        state.setAttribute(SORTED_BY, sort);
                        state.setAttribute(SORTED_ASC, asc);
                    }
                    context.put("groups", new SortedIterator(groupsAllowGradeAssignment.iterator(),
                            new AssignmentComparator(state, sort, asc)));
                }
            }

            // SAK-17606
            context.put("value_CheckAnonymousGrading", state.getAttribute(NEW_ASSIGNMENT_CHECK_ANONYMOUS_GRADING));

            List<SubmitterSubmission> userSubmissions = prepPage(state);

            // attach the assignment to these submissions now to avoid costly lookup for each submission later in the velocity template
            for (SubmitterSubmission s : userSubmissions) {
                s.getSubmission().setAssignment(assignment);
            }

            state.setAttribute(USER_SUBMISSIONS, userSubmissions);
            context.put("userSubmissions", state.getAttribute(USER_SUBMISSIONS));

            //find peer assessment grades if exist
            if (assignment.getAllowPeerAssessment()) {
                List<String> submissionIds = new ArrayList<String>();
                //get list of submission ids to look up reviews in db
                for (SubmitterSubmission s : userSubmissions) {
                    submissionIds.add(s.getSubmission().getId());
                }
                //look up reviews for these submissions
                List<PeerAssessmentItem> items = assignmentPeerAssessmentService
                        .getPeerAssessmentItems(submissionIds, assignment.getContent().getFactor());
                //create a map for velocity to use in displaying the submission reviews
                Map<String, List<PeerAssessmentItem>> itemsMap = new HashMap<String, List<PeerAssessmentItem>>();
                Map<String, User> reviewersMap = new HashMap<String, User>();
                if (items != null) {
                    for (PeerAssessmentItem item : items) {
                        //update items map
                        List<PeerAssessmentItem> sItems = itemsMap.get(item.getSubmissionId());
                        if (sItems == null) {
                            sItems = new ArrayList<PeerAssessmentItem>();
                        }
                        sItems.add(item);
                        itemsMap.put(item.getSubmissionId(), sItems);
                        //update users map:
                        User u = reviewersMap.get(item.getAssessorUserId());
                        if (u == null) {
                            try {
                                u = UserDirectoryService.getUser(item.getAssessorUserId());
                                reviewersMap.put(item.getAssessorUserId(), u);
                            } catch (UserNotDefinedException e) {
                                M_log.error(e.getMessage(), e);
                            }
                        }
                    }
                }
                //go through all the submissions and make sure there aren't any nulls
                for (String id : submissionIds) {
                    List<PeerAssessmentItem> sItems = itemsMap.get(id);
                    if (sItems == null) {
                        sItems = new ArrayList<PeerAssessmentItem>();
                        itemsMap.put(id, sItems);
                    }
                }
                context.put("peerAssessmentItems", itemsMap);
                context.put("reviewersMap", reviewersMap);
            }

            // try to put in grade overrides
            if (assignment.isGroup()) {
                Map<String, Object> _ugrades = new HashMap<String, Object>();
                Iterator<SubmitterSubmission> _ssubmits = userSubmissions.iterator();
                while (_ssubmits.hasNext()) {
                    SubmitterSubmission _ss = _ssubmits.next();
                    if (_ss != null && _ss.getSubmission() != null) {
                        User[] _users = _ss.getSubmission().getSubmitters();
                        for (int i = 0; _users != null && i < _users.length; i++) {
                            String _agrade = _ss.getSubmission().getGradeForUser(_users[i].getId());
                            if (_agrade != null) {
                                _ugrades.put(_users[i].getId(),
                                        assignmentContent != null && assignmentContent.getTypeOfGrade() == 3
                                                ? displayGrade(state, _agrade, assignmentContent.getFactor())
                                                : _agrade);
                            }
                        }
                    }
                }

                context.put("value_grades", _ugrades);
                Collection<String> _dups = checkForUsersInMultipleGroups(assignment, null, state,
                        rb.getString("group.user.multiple.warning"));
                if (_dups.size() > 0) {
                    context.put("usersinmultiplegroups", _dups);
                }
            }

            // put the re-submission info into context
            assignment_resubmission_option_into_state(assignment, null, state);
            putTimePropertiesInContext(context, state, "Resubmit", ALLOW_RESUBMIT_CLOSEMONTH,
                    ALLOW_RESUBMIT_CLOSEDAY, ALLOW_RESUBMIT_CLOSEYEAR, ALLOW_RESUBMIT_CLOSEHOUR,
                    ALLOW_RESUBMIT_CLOSEMIN);
            assignment_resubmission_option_into_context(context, state);
        }

        TaggingManager taggingManager = (TaggingManager) ComponentManager
                .get("org.sakaiproject.taggable.api.TaggingManager");
        if (taggingManager.isTaggable() && assignment != null) {
            context.put("producer",
                    ComponentManager.get("org.sakaiproject.assignment.taggable.api.AssignmentActivityProducer"));
            addProviders(context, state);
            addActivity(context, assignment);
            context.put("taggable", Boolean.valueOf(true));
        }

        context.put("submissionTypeTable", submissionTypeTable());
        context.put("attachments", state.getAttribute(ATTACHMENTS));

        context.put("contentTypeImageService", state.getAttribute(STATE_CONTENT_TYPE_IMAGE_SERVICE));
        context.put("service", AssignmentService.getInstance());

        context.put("assignment_expand_flag", state.getAttribute(GRADE_ASSIGNMENT_EXPAND_FLAG));
        context.put("submission_expand_flag", state.getAttribute(GRADE_SUBMISSION_EXPAND_FLAG));

        add2ndToolbarFields(data, context);

        pagingInfoToContext(state, context);

        // put supplement item into context
        supplementItemIntoContext(state, context, assignment, null);

        // search context
        String searchString = (String) state.getAttribute(STATE_SEARCH) != null
                ? (String) state.getAttribute(STATE_SEARCH)
                : "";
        context.put("searchString", searchString);

        context.put("form_search", FORM_SEARCH);
        context.put("showSubmissionByFilterSearchOnly", state.getAttribute(SUBMISSIONS_SEARCH_ONLY) != null
                && ((Boolean) state.getAttribute(SUBMISSIONS_SEARCH_ONLY)) ? Boolean.TRUE : Boolean.FALSE);

        // letter grading
        letterGradeOptionsIntoContext(context);

        // ever set the default grade for no-submissions
        if (assignment != null && assignmentContent != null
                && assignmentContent.getTypeOfSubmission() == Assignment.NON_ELECTRONIC_ASSIGNMENT_SUBMISSION) {
            // non-electronic submissions
            context.put("form_action", "eventSubmit_doSet_defaultNotGradedNonElectronicScore");
            context.put("form_label", rb.getFormattedMessage("not.graded.non.electronic.submission.grade",
                    new Object[] { state.getAttribute(STATE_NUM_MESSAGES) }));
        } else {
            // other types of submissions
            context.put("form_action", "eventSubmit_doSet_defaultNoSubmissionScore");
            context.put("form_label", rb.getFormattedMessage("non.submission.grade",
                    new Object[] { state.getAttribute(STATE_NUM_MESSAGES) }));
        }

        // show the reminder for download all url
        String downloadUrl = (String) state.getAttribute(STATE_DOWNLOAD_URL);
        if (downloadUrl != null) {
            context.put("download_url_reminder", rb.getString("download_url_reminder"));
            context.put("download_url_link", downloadUrl);
            context.put("download_url_link_label", rb.getString("download_url_link_label"));
            state.removeAttribute(STATE_DOWNLOAD_URL);
        }

        String template = (String) getContext(data).get("template");

        return template + TEMPLATE_INSTRUCTOR_GRADE_ASSIGNMENT;

    } // build_instructor_grade_assignment_context

    /**
     * make sure the state variable VIEW_SUBMISSION_LIST_OPTION is not null
     * @param state
     */
    private void initViewSubmissionListOption(SessionState state) {
        if (state.getAttribute(VIEW_SUBMISSION_LIST_OPTION) == null
                && (state.getAttribute(SUBMISSIONS_SEARCH_ONLY) == null
                        || !((Boolean) state.getAttribute(SUBMISSIONS_SEARCH_ONLY)).booleanValue())) {
            state.setAttribute(VIEW_SUBMISSION_LIST_OPTION, AssignmentConstants.ALL);
        }
    }

    /**
     * put the supplement item information into context
     * @param state
     * @param context
     * @param assignment
     * @param s
     */
    private void supplementItemIntoContext(SessionState state, Context context, Assignment assignment,
            AssignmentSubmission s) {

        String contextString = (String) state.getAttribute(STATE_CONTEXT_STRING);

        // for model answer
        boolean allowViewModelAnswer = m_assignmentSupplementItemService.canViewModelAnswer(assignment, s);
        context.put("allowViewModelAnswer", allowViewModelAnswer);
        if (allowViewModelAnswer) {
            context.put("assignmentModelAnswerItem",
                    m_assignmentSupplementItemService.getModelAnswer(assignment.getId()));
        }

        // for note item
        boolean allowReadAssignmentNoteItem = m_assignmentSupplementItemService.canReadNoteItem(assignment,
                contextString);
        context.put("allowReadAssignmentNoteItem", allowReadAssignmentNoteItem);
        if (allowReadAssignmentNoteItem) {
            context.put("assignmentNoteItem", m_assignmentSupplementItemService.getNoteItem(assignment.getId()));
        }
        // for all purpose item
        boolean allowViewAllPurposeItem = m_assignmentSupplementItemService.canViewAllPurposeItem(assignment);
        context.put("allowViewAllPurposeItem", allowViewAllPurposeItem);
        if (allowViewAllPurposeItem) {
            context.put("assignmentAllPurposeItem",
                    m_assignmentSupplementItemService.getAllPurposeItem(assignment.getId()));
        }
    }

    /**
     * build the instructor view of an assignment
     */
    protected String build_instructor_view_assignment_context(VelocityPortlet portlet, Context context,
            RunData data, SessionState state) {
        context.put("tlang", rb);

        String assignmentId = (String) state.getAttribute(VIEW_ASSIGNMENT_ID);
        Assignment assignment = getAssignment(assignmentId, "build_instructor_view_assignment_context", state);
        if (assignment != null) {
            context.put("assignment", assignment);

            // put the resubmit information into context
            assignment_resubmission_option_into_context(context, state);

            // put creator information into context
            putCreatorIntoContext(context, assignment);
        }

        TaggingManager taggingManager = (TaggingManager) ComponentManager
                .get("org.sakaiproject.taggable.api.TaggingManager");
        if (taggingManager.isTaggable() && assignment != null) {
            Session session = SessionManager.getCurrentSession();
            List<DecoratedTaggingProvider> providers = addProviders(context, state);
            List<TaggingHelperInfo> activityHelpers = new ArrayList<TaggingHelperInfo>();
            AssignmentActivityProducer assignmentActivityProducer = (AssignmentActivityProducer) ComponentManager
                    .get("org.sakaiproject.assignment.taggable.api.AssignmentActivityProducer");
            for (DecoratedTaggingProvider provider : providers) {
                TaggingHelperInfo helper = provider.getProvider()
                        .getActivityHelperInfo(assignmentActivityProducer.getActivity(assignment).getReference());
                if (helper != null) {
                    activityHelpers.add(helper);
                }
            }
            addActivity(context, assignment);
            context.put("activityHelpers", activityHelpers);
            context.put("taggable", Boolean.valueOf(true));

            addDecoUrlMapToContext(session, context, false);
        }

        context.put("currentTime", TimeService.newTime());
        context.put("submissionTypeTable", submissionTypeTable());
        context.put("hideAssignmentFlag", state.getAttribute(VIEW_ASSIGNMENT_HIDE_ASSIGNMENT_FLAG));
        context.put("hideStudentViewFlag", state.getAttribute(VIEW_ASSIGNMENT_HIDE_STUDENT_VIEW_FLAG));
        context.put("contentTypeImageService", state.getAttribute(STATE_CONTENT_TYPE_IMAGE_SERVICE));
        context.put("honor_pledge_text",
                ServerConfigurationService.getString("assignment.honor.pledge", rb.getString("gen.honple2")));

        String template = (String) getContext(data).get("template");
        return template + TEMPLATE_INSTRUCTOR_VIEW_ASSIGNMENT;

    } // build_instructor_view_assignment_context

    private void putCreatorIntoContext(Context context, Assignment assignment) {
        // the creator 
        String creatorId = assignment.getCreator();
        try {
            User creator = UserDirectoryService.getUser(creatorId);
            context.put("creator", creator.getDisplayName());
        } catch (Exception ee) {
            context.put("creator", creatorId);
            M_log.warn(this + ":build_instructor_view_assignment_context " + ee.getMessage());
        }
    }

    /**
     * build the instructor view of reordering assignments
     */
    protected String build_instructor_reorder_assignment_context(VelocityPortlet portlet, Context context,
            RunData data, SessionState state) {
        context.put("context", state.getAttribute(STATE_CONTEXT_STRING));

        List assignments = prepPage(state);

        context.put("assignments", assignments.iterator());
        context.put("assignmentsize", assignments.size());

        String sortedBy = (String) state.getAttribute(SORTED_BY);
        String sortedAsc = (String) state.getAttribute(SORTED_ASC);
        context.put("sortedBy", sortedBy);
        context.put("sortedAsc", sortedAsc);

        context.put("contentTypeImageService", state.getAttribute(STATE_CONTENT_TYPE_IMAGE_SERVICE));
        context.put("userDirectoryService", UserDirectoryService.getInstance());

        String template = (String) getContext(data).get("template");
        return template + TEMPLATE_INSTRUCTOR_REORDER_ASSIGNMENT;

    } // build_instructor_reorder_assignment_context

    protected String build_student_review_edit_context(VelocityPortlet portlet, Context context, RunData data,
            SessionState state) {
        int gradeType = -1;
        context.put("context", state.getAttribute(STATE_CONTEXT_STRING));
        List<PeerAssessmentItem> peerAssessmentItems = (List<PeerAssessmentItem>) state
                .getAttribute(PEER_ASSESSMENT_ITEMS);
        String assignmentId = (String) state.getAttribute(VIEW_ASSIGNMENT_ID);
        User sessionUser = (User) state.getAttribute(STATE_USER);
        String assessorId = sessionUser.getId();
        if (state.getAttribute(PEER_ASSESSMENT_ASSESSOR_ID) != null) {
            assessorId = (String) state.getAttribute(PEER_ASSESSMENT_ASSESSOR_ID);
        }
        int factor = AssignmentService.getScaleFactor();
        int dec = (int) Math.log10(factor);
        Assignment assignment = getAssignment(assignmentId, "build_student_review_edit_context", state);
        if (assignment != null) {
            context.put("assignment", assignment);
            if (assignment.getContent() != null) {
                gradeType = assignment.getContent().getTypeOfGrade();
                factor = assignment.getContent().getFactor();
                dec = (int) Math.log10(factor);
            }
            context.put("peerAssessmentInstructions", assignment.getPeerAssessmentInstructions() == null ? ""
                    : assignment.getPeerAssessmentInstructions());
        }
        String submissionId = "";
        SecurityAdvisor secAdv = new SecurityAdvisor() {
            @Override
            public SecurityAdvice isAllowed(String userId, String function, String reference) {
                if ("asn.submit".equals(function) || "asn.submit".equals(function)
                        || "asn.grade".equals(function)) {
                    return SecurityAdvice.ALLOWED;
                }
                return null;
            }
        };
        AssignmentSubmission s = null;
        try {
            //surround with a try/catch/finally for the security advisor
            m_securityService.pushAdvisor(secAdv);
            s = getSubmission((String) state.getAttribute(GRADE_SUBMISSION_SUBMISSION_ID),
                    "build_student_review_edit_context", state);
            m_securityService.popAdvisor(secAdv);
        } catch (Exception e) {
            M_log.error(e.getMessage(), e);
        } finally {
            if (secAdv != null) {
                m_securityService.popAdvisor(secAdv);
            }
        }
        if (s != null) {
            submissionId = s.getId();
            context.put("submission", s);

            ResourceProperties p = s.getProperties();
            if (p.getProperty(ResourceProperties.PROP_SUBMISSION_PREVIOUS_FEEDBACK_TEXT) != null) {
                context.put("prevFeedbackText",
                        p.getProperty(ResourceProperties.PROP_SUBMISSION_PREVIOUS_FEEDBACK_TEXT));
            }

            if (p.getProperty(ResourceProperties.PROP_SUBMISSION_PREVIOUS_FEEDBACK_COMMENT) != null) {
                context.put("prevFeedbackComment",
                        p.getProperty(ResourceProperties.PROP_SUBMISSION_PREVIOUS_FEEDBACK_COMMENT));
            }

            if (p.getProperty(PROP_SUBMISSION_PREVIOUS_FEEDBACK_ATTACHMENTS) != null) {
                context.put("prevFeedbackAttachments", getPrevFeedbackAttachments(p));
            }
            if ((s.getFeedbackText() == null) || (s.getFeedbackText().length() == 0)) {
                context.put("value_feedback_text", s.getSubmittedText());
            } else {
                context.put("value_feedback_text", s.getFeedbackFormattedText());
            }

            context.put("value_feedback_text", s.getSubmittedText());
            List v = EntityManager.newReferenceList();
            Iterator attachments = s.getFeedbackAttachments().iterator();
            while (attachments.hasNext()) {
                v.add(attachments.next());
            }
            context.put("value_feedback_attachment", v);
            state.setAttribute(ATTACHMENTS, v);
        }
        if (peerAssessmentItems != null && submissionId != null) {
            //find the peerAssessmentItem for this submission:
            PeerAssessmentItem peerAssessmentItem = null;
            for (PeerAssessmentItem item : peerAssessmentItems) {
                if (submissionId.equals(item.getSubmissionId()) && assessorId.equals(item.getAssessorUserId())) {
                    peerAssessmentItem = item;
                    break;
                }
            }
            if (peerAssessmentItem != null) {
                //check if current user is the peer assessor, if not, only display data (no editing)
                if (!sessionUser.getId().equals(peerAssessmentItem.getAssessorUserId())) {
                    context.put("view_only", true);
                    try {
                        User reviewer = UserDirectoryService.getUser(peerAssessmentItem.getAssessorUserId());
                        context.put("reviewer", reviewer);
                    } catch (UserNotDefinedException e) {
                        M_log.error(e.getMessage(), e);
                    }
                } else {
                    context.put("view_only", false);
                }

                //scores are saved as whole values
                //so a score of 1.3 would be stored as 13
                //so a DB score of 13 needs to be 1.3:
                String decSeparator = FormattedText.getDecimalSeparator();
                if (peerAssessmentItem.getScore() != null) {
                    double score = peerAssessmentItem.getScore() / (double) factor;
                    try {
                        String rv = StringUtils.replace(Double.toString(score),
                                (",".equals(decSeparator) ? "." : ","), decSeparator);
                        NumberFormat nbFormat = FormattedText.getNumberFormat(dec, dec, false);
                        DecimalFormat dcformat = (DecimalFormat) nbFormat;
                        Double dblGrade = dcformat.parse(rv).doubleValue();
                        rv = nbFormat.format(dblGrade);
                        context.put("value_grade", rv);
                        context.put("display_grade", rv);
                    } catch (Exception e) {
                        M_log.warn(this
                                + ":build_student_review_edit_context: Parse Error in display_Grade peerAssesmentItem"
                                + e.getMessage());
                    }
                } else {
                    context.put("value_grade", null);
                    context.put("display_grade", "");
                }
                context.put("item_removed", peerAssessmentItem.isRemoved());
                context.put("value_feedback_comment", peerAssessmentItem.getComment());

                //set previous/next values
                List userSubmissionsState = state.getAttribute(STATE_PAGEING_TOTAL_ITEMS) != null
                        ? (List) state.getAttribute(STATE_PAGEING_TOTAL_ITEMS)
                        : null;
                List<String> userSubmissions = new ArrayList<String>();
                boolean instructorView = false;
                if (userSubmissionsState != null && userSubmissionsState.size() > 0
                        && userSubmissionsState.get(0) instanceof SubmitterSubmission) {
                    //from instructor view
                    for (SubmitterSubmission userSubmission : (List<SubmitterSubmission>) userSubmissionsState) {
                        if (!userSubmissions.contains(userSubmission.getSubmission().getId())
                                && userSubmission.getSubmission().getSubmitted()) {
                            userSubmissions.add(userSubmission.getSubmission().getId());
                        }
                    }
                } else {
                    //student view
                    for (PeerAssessmentItem item : peerAssessmentItems) {
                        if (!userSubmissions.contains(item.getSubmissionId()) && !item.isSubmitted()) {
                            userSubmissions.add(item.getSubmissionId());
                        }
                    }
                }
                if (userSubmissions != null) {
                    context.put("totalReviews", userSubmissions.size());
                    //first setup map to make the navigation logic easier:
                    Map<String, List<PeerAssessmentItem>> itemMap = new HashMap<String, List<PeerAssessmentItem>>();
                    for (String userSubmissionId : userSubmissions) {
                        for (PeerAssessmentItem item : peerAssessmentItems) {
                            if (userSubmissionId.equals(item.getSubmissionId())) {
                                List<PeerAssessmentItem> items = itemMap.get(userSubmissionId);
                                if (items == null) {
                                    items = new ArrayList<PeerAssessmentItem>();
                                }
                                items.add(item);
                                itemMap.put(item.getSubmissionId(), items);
                            }
                        }
                    }
                    for (int i = 0; i < userSubmissions.size(); i++) {
                        String userSubmissionId = userSubmissions.get(i);
                        if (userSubmissionId.equals(submissionId)) {
                            //we found the right submission, now find the items
                            context.put("reviewNumber", (i + 1));
                            List<PeerAssessmentItem> submissionItems = itemMap.get(submissionId);
                            if (submissionItems != null) {
                                for (int j = 0; j < submissionItems.size(); j++) {
                                    PeerAssessmentItem item = submissionItems.get(j);
                                    if (item.getAssessorUserId().equals(assessorId)) {
                                        context.put("anonNumber", i + 1);
                                        boolean goPT = false;
                                        boolean goNT = false;
                                        if ((i - 1) >= 0 || (j - 1) >= 0) {
                                            goPT = true;
                                        }
                                        if ((i + 1) < userSubmissions.size() || (j + 1) < submissionItems.size()) {
                                            goNT = true;
                                        }
                                        context.put("goPTButton", Boolean.valueOf(goPT));
                                        context.put("goNTButton", Boolean.valueOf(goNT));

                                        if (j > 0) {
                                            // retrieve the previous submission id
                                            context.put("prevSubmissionId",
                                                    (submissionItems.get(j - 1).getSubmissionId()));
                                            context.put("prevAssessorId",
                                                    (submissionItems.get(j - 1).getAssessorUserId()));
                                        } else if (i > 0) {
                                            //go to previous submission and grab the last item in that list
                                            int k = i - 1;
                                            while (k >= 0 && !itemMap.containsKey(userSubmissions.get(k))) {
                                                k--;
                                            }
                                            if (k >= 0 && itemMap.get(userSubmissions.get(k)).size() > 0) {
                                                List<PeerAssessmentItem> pItems = itemMap
                                                        .get(userSubmissions.get(k));
                                                PeerAssessmentItem pItem = pItems.get(pItems.size() - 1);
                                                context.put("prevSubmissionId", (pItem.getSubmissionId()));
                                                context.put("prevAssessorId", (pItem.getAssessorUserId()));
                                            } else {
                                                //no previous option, set to false
                                                context.put("goPTButton", Boolean.valueOf(false));
                                            }
                                        }

                                        if (j < submissionItems.size() - 1) {
                                            // retrieve the next submission id
                                            context.put("nextSubmissionId",
                                                    (submissionItems.get(j + 1).getSubmissionId()));
                                            context.put("nextAssessorId",
                                                    (submissionItems.get(j + 1).getAssessorUserId()));
                                        } else if (i < userSubmissions.size() - 1) {
                                            //go to previous submission and grab the last item in that list
                                            int k = i + 1;
                                            while (k < userSubmissions.size()
                                                    && !itemMap.containsKey(userSubmissions.get(k))) {
                                                k++;
                                            }
                                            if (k < userSubmissions.size()
                                                    && itemMap.get(userSubmissions.get(k)).size() > 0) {
                                                List<PeerAssessmentItem> pItems = itemMap
                                                        .get(userSubmissions.get(k));
                                                PeerAssessmentItem pItem = pItems.get(0);
                                                context.put("nextSubmissionId", (pItem.getSubmissionId()));
                                                context.put("nextAssessorId", (pItem.getAssessorUserId()));
                                            } else {
                                                //no next option, set to false
                                                context.put("goNTButton", Boolean.valueOf(false));
                                            }
                                        }
                                    }
                                }
                            }
                        }
                    }
                }
            }

        }

        context.put("assignment_expand_flag", state.getAttribute(GRADE_SUBMISSION_ASSIGNMENT_EXPAND_FLAG));
        context.put("user", sessionUser);
        context.put("submissionTypeTable", submissionTypeTable());
        context.put("instructorAttachments", state.getAttribute(ATTACHMENTS));
        context.put("contentTypeImageService", state.getAttribute(STATE_CONTENT_TYPE_IMAGE_SERVICE));
        context.put("service", AssignmentService.getInstance());
        // names
        context.put("name_grade_assignment_id", GRADE_SUBMISSION_ASSIGNMENT_ID);
        context.put("name_feedback_comment", GRADE_SUBMISSION_FEEDBACK_COMMENT);
        context.put("name_feedback_text", GRADE_SUBMISSION_FEEDBACK_TEXT);
        context.put("name_feedback_attachment", GRADE_SUBMISSION_FEEDBACK_ATTACHMENT);
        context.put("name_grade", GRADE_SUBMISSION_GRADE);
        context.put("name_allowResubmitNumber", AssignmentSubmission.ALLOW_RESUBMIT_NUMBER);

        // put supplement item into context
        try {
            //surround with a try/catch/finally for the security advisor
            m_securityService.pushAdvisor(secAdv);
            supplementItemIntoContext(state, context, assignment, null);
        } catch (Exception e) {
            M_log.error(e.getMessage(), e);
        } finally {
            if (secAdv != null) {
                m_securityService.popAdvisor(secAdv);
            }
        }
        // put the grade confirmation message if applicable
        if (state.getAttribute(GRADE_SUBMISSION_DONE) != null) {
            context.put("gradingDone", Boolean.TRUE);
            state.removeAttribute(GRADE_SUBMISSION_DONE);
            if (state.getAttribute(PEER_ASSESSMENT_REMOVED_STATUS) != null) {
                context.put("itemRemoved", state.getAttribute(PEER_ASSESSMENT_REMOVED_STATUS));
                state.removeAttribute(PEER_ASSESSMENT_REMOVED_STATUS);
            }
        }
        // put the grade confirmation message if applicable
        if (state.getAttribute(GRADE_SUBMISSION_SUBMIT) != null) {
            context.put("gradingSubmit", Boolean.TRUE);
            state.removeAttribute(GRADE_SUBMISSION_SUBMIT);
        }

        String template = (String) getContext(data).get("template");
        return template + TEMPLATE_STUDENT_REVIEW_EDIT;
    }

    /**
     * build the instructor view to view the list of students for an assignment
     */
    protected String build_instructor_view_students_assignment_context(VelocityPortlet portlet, Context context,
            RunData data, SessionState state) {
        // cleaning from view attribute
        state.removeAttribute(FROM_VIEW);

        String contextString = (String) state.getAttribute(STATE_CONTEXT_STRING);

        initViewSubmissionListOption(state);
        String allOrOneGroup = (String) state.getAttribute(VIEW_SUBMISSION_LIST_OPTION);
        String search = (String) state.getAttribute(VIEW_SUBMISSION_SEARCH);
        Boolean searchFilterOnly = (state.getAttribute(SUBMISSIONS_SEARCH_ONLY) != null
                && ((Boolean) state.getAttribute(SUBMISSIONS_SEARCH_ONLY)) ? Boolean.TRUE : Boolean.FALSE);

        // get the realm and its member
        List studentMembers = new ArrayList();
        List assignments = AssignmentService.getListAssignmentsForContext(contextString);

        boolean hasAtLeastOneAnonAssigment = false;
        for (Object obj : assignments) {
            Assignment assignment = (Assignment) obj;
            if (AssignmentService.getInstance().assignmentUsesAnonymousGrading(assignment)) {
                hasAtLeastOneAnonAssigment = true;
                break;
            }
        }
        context.put("hasAtLeastOneAnonAssignment", hasAtLeastOneAnonAssigment);

        //No duplicates
        Set allowSubmitMembers = new HashSet();
        for (Object obj : assignments) {
            Assignment a = (Assignment) obj;
            List<String> submitterIds = AssignmentService.getSubmitterIdList(searchFilterOnly.toString(),
                    allOrOneGroup, search, a.getReference(), contextString);
            allowSubmitMembers.addAll(submitterIds);
        }
        for (Iterator allowSubmitMembersIterator = allowSubmitMembers.iterator(); allowSubmitMembersIterator
                .hasNext();) {
            // get user
            try {
                String userId = (String) allowSubmitMembersIterator.next();
                User user = UserDirectoryService.getUser(userId);
                studentMembers.add(user);
            } catch (Exception ee) {
                M_log.warn(this + ":build_instructor_view_student_assignment_context " + ee.getMessage());
            }
        }

        context.put("studentMembers", new SortedIterator(studentMembers.iterator(),
                new AssignmentComparator(state, SORTED_USER_BY_SORTNAME, Boolean.TRUE.toString())));
        context.put("assignmentService", AssignmentService.getInstance());
        context.put("userService", UserDirectoryService.getInstance());
        context.put("viewGroup", state.getAttribute(VIEW_SUBMISSION_LIST_OPTION));

        context.put("searchString",
                state.getAttribute(VIEW_SUBMISSION_SEARCH) != null ? state.getAttribute(VIEW_SUBMISSION_SEARCH)
                        : "");
        context.put("showSubmissionByFilterSearchOnly", state.getAttribute(SUBMISSIONS_SEARCH_ONLY) != null
                && ((Boolean) state.getAttribute(SUBMISSIONS_SEARCH_ONLY)) ? Boolean.TRUE : Boolean.FALSE);

        if (AssignmentService.getAllowGroupAssignments()) {
            Collection groups = getAllGroupsInSite(contextString);
            context.put("groups", new SortedIterator(groups.iterator(),
                    new AssignmentComparator(state, SORTED_BY_GROUP_TITLE, Boolean.TRUE.toString())));
        }

        HashMap showStudentAssignments = new HashMap();
        if (state.getAttribute(STUDENT_LIST_SHOW_TABLE) != null) {
            Set showStudentListSet = (Set) state.getAttribute(STUDENT_LIST_SHOW_TABLE);
            context.put("studentListShowSet", showStudentListSet);
            for (Iterator showStudentListSetIterator = showStudentListSet.iterator(); showStudentListSetIterator
                    .hasNext();) {
                // get user
                try {
                    String userId = (String) showStudentListSetIterator.next();
                    User user = UserDirectoryService.getUser(userId);

                    // sort the assignments into the default order before adding
                    Iterator assignmentSorter = AssignmentService.getAssignmentsForContext(contextString, userId);
                    // filter to obtain only grade-able assignments
                    List rv = new ArrayList();
                    while (assignmentSorter.hasNext()) {
                        Assignment a = (Assignment) assignmentSorter.next();
                        if (AssignmentService.allowGradeSubmission(a.getReference())) {
                            rv.add(a);
                        }
                    }
                    Iterator assignmentSortFinal = new SortedIterator(rv.iterator(),
                            new AssignmentComparator(state, SORTED_BY_DEFAULT, Boolean.TRUE.toString()));

                    showStudentAssignments.put(user, assignmentSortFinal);
                } catch (Exception ee) {
                    M_log.warn(this + ":build_instructor_view_student_assignment_context " + ee.getMessage());
                }
            }

        }

        context.put("studentAssignmentsTable", showStudentAssignments);

        add2ndToolbarFields(data, context);

        String template = (String) getContext(data).get("template");
        return template + TEMPLATE_INSTRUCTOR_VIEW_STUDENTS_ASSIGNMENT;

    } // build_instructor_view_students_assignment_context

    /**
     * build the instructor view to report the submissions
     */
    protected String build_instructor_report_submissions(VelocityPortlet portlet, Context context, RunData data,
            SessionState state) {
        List submissions = prepPage(state);
        context.put("submissions", submissions);

        List<SubmitterSubmission> allSubmissions = (List) state.getAttribute(STATE_PAGEING_TOTAL_ITEMS);
        boolean hasAtLeastOneAnonAssigment = false;
        for (SubmitterSubmission submission : allSubmissions) {
            Assignment assignment = submission.getSubmission().getAssignment();
            if (AssignmentService.getInstance().assignmentUsesAnonymousGrading(assignment)) {
                hasAtLeastOneAnonAssigment = true;
                break;
            }
        }
        context.put("hasAtLeastOneAnonAssignment", hasAtLeastOneAnonAssigment);

        context.put("sortedBy", (String) state.getAttribute(SORTED_SUBMISSION_BY));
        context.put("sortedAsc", (String) state.getAttribute(SORTED_SUBMISSION_ASC));

        context.put("sortedBy_lastName", SORTED_GRADE_SUBMISSION_BY_LASTNAME);
        context.put("sortedBy_submitTime", SORTED_GRADE_SUBMISSION_BY_SUBMIT_TIME);
        context.put("sortedBy_grade", SORTED_GRADE_SUBMISSION_BY_GRADE);
        context.put("sortedBy_status", SORTED_GRADE_SUBMISSION_BY_STATUS);
        context.put("sortedBy_released", SORTED_GRADE_SUBMISSION_BY_RELEASED);
        //context.put("sortedBy_assignment", SORTED_GRADE_SUBMISSION_BY_ASSIGNMENT);
        //context.put("sortedBy_maxGrade", SORTED_GRADE_SUBMISSION_BY_MAX_GRADE);

        // get current site
        String contextString = (String) state.getAttribute(STATE_CONTEXT_STRING);
        context.put("searchString",
                state.getAttribute(VIEW_SUBMISSION_SEARCH) != null ? state.getAttribute(VIEW_SUBMISSION_SEARCH)
                        : "");

        String view = (String) state.getAttribute(VIEW_SUBMISSION_LIST_OPTION);
        context.put("view", state.getAttribute(VIEW_SUBMISSION_LIST_OPTION));
        context.put("viewString",
                state.getAttribute(VIEW_SUBMISSION_LIST_OPTION) != null
                        ? state.getAttribute(VIEW_SUBMISSION_LIST_OPTION)
                        : "");
        context.put("searchString",
                state.getAttribute(VIEW_SUBMISSION_SEARCH) != null ? state.getAttribute(VIEW_SUBMISSION_SEARCH)
                        : "");

        context.put("showSubmissionByFilterSearchOnly", state.getAttribute(SUBMISSIONS_SEARCH_ONLY) != null
                && ((Boolean) state.getAttribute(SUBMISSIONS_SEARCH_ONLY)) ? Boolean.TRUE : Boolean.FALSE);

        if (AssignmentService.getAllowGroupAssignments()) {
            Collection groups = getAllGroupsInSite(contextString);
            context.put("groups", new SortedIterator(groups.iterator(),
                    new AssignmentComparator(state, SORTED_BY_GROUP_TITLE, Boolean.TRUE.toString())));
        }

        add2ndToolbarFields(data, context);

        if (view != null && !AssignmentConstants.ALL.equals(view)) {
            context.put("accessPointUrl", ServerConfigurationService.getAccessUrl() + AssignmentService
                    .gradesSpreadsheetReference(view.substring(view.indexOf(Entity.SEPARATOR) + 1), null));
        } else {
            context.put("accessPointUrl", ServerConfigurationService.getAccessUrl()
                    + AssignmentService.gradesSpreadsheetReference(contextString, null));
        }

        pagingInfoToContext(state, context);

        context.put("assignmentService", AssignmentService.getInstance());

        String template = (String) getContext(data).get("template");
        return template + TEMPLATE_INSTRUCTOR_REPORT_SUBMISSIONS;

    } // build_instructor_report_submissions

    // Is Gradebook defined for the site?
    protected boolean isGradebookDefined() {
        boolean rv = false;
        try {
            GradebookService g = (GradebookService) ComponentManager
                    .get("org.sakaiproject.service.gradebook.GradebookService");
            String gradebookUid = ToolManager.getCurrentPlacement().getContext();
            if (g.isGradebookDefined(gradebookUid)
                    && (g.currentUserHasEditPerm(gradebookUid) || g.currentUserHasGradingPerm(gradebookUid))) {
                rv = true;
            }
        } catch (Exception e) {
            M_log.debug(this + "isGradebookDefined "
                    + rb.getFormattedMessage("addtogradebook.alertMessage", new Object[] { e.getMessage() }));
        }

        return rv;

    } // isGradebookDefined()

    /**
     * build the instructor view to download/upload information from archive file
     */
    protected String build_instructor_download_upload_all(VelocityPortlet portlet, Context context, RunData data,
            SessionState state) {
        String view = (String) state.getAttribute(VIEW_SUBMISSION_LIST_OPTION);
        boolean download = (((String) state.getAttribute(STATE_MODE)).equals(MODE_INSTRUCTOR_DOWNLOAD_ALL));

        context.put("download", Boolean.valueOf(download));
        context.put("hasSubmissionText", state.getAttribute(UPLOAD_ALL_HAS_SUBMISSION_TEXT));
        context.put("hasSubmissionAttachment", state.getAttribute(UPLOAD_ALL_HAS_SUBMISSION_ATTACHMENT));
        context.put("hasGradeFile", state.getAttribute(UPLOAD_ALL_HAS_GRADEFILE));
        String gradeFileFormat = (String) state.getAttribute(UPLOAD_ALL_GRADEFILE_FORMAT);
        if (gradeFileFormat == null)
            gradeFileFormat = "csv";
        context.put("gradeFileFormat", gradeFileFormat);
        context.put("hasComments", state.getAttribute(UPLOAD_ALL_HAS_COMMENTS));
        context.put("hasFeedbackText", state.getAttribute(UPLOAD_ALL_HAS_FEEDBACK_TEXT));
        context.put("hasFeedbackAttachment", state.getAttribute(UPLOAD_ALL_HAS_FEEDBACK_ATTACHMENT));
        context.put("releaseGrades", state.getAttribute(UPLOAD_ALL_RELEASE_GRADES));
        // SAK-19147
        context.put("withoutFolders", state.getAttribute(UPLOAD_ALL_WITHOUT_FOLDERS));
        context.put("enableFlatDownload", ServerConfigurationService.getBoolean("assignment.download.flat", false));
        String contextString = (String) state.getAttribute(STATE_CONTEXT_STRING);
        context.put("contextString", contextString);
        context.put("accessPointUrl", (ServerConfigurationService.getAccessUrl()).concat(AssignmentService
                .submissionsZipReference(contextString, (String) state.getAttribute(EXPORT_ASSIGNMENT_REF))));

        String assignmentRef = (String) state.getAttribute(EXPORT_ASSIGNMENT_REF);
        Assignment a = getAssignment(assignmentRef, "build_instructor_download_upload_all", state);
        if (a != null) {

            String accessPointUrl = ServerConfigurationService.getAccessUrl()
                    .concat(AssignmentService.submissionsZipReference(contextString, assignmentRef));
            context.put("accessPointUrl", accessPointUrl);

            int submissionType = a.getContent().getTypeOfSubmission();
            // if the assignment is of text-only or allow both text and attachment, include option for uploading student submit text
            context.put("includeSubmissionText",
                    Boolean.valueOf(Assignment.TEXT_ONLY_ASSIGNMENT_SUBMISSION == submissionType
                            || Assignment.TEXT_AND_ATTACHMENT_ASSIGNMENT_SUBMISSION == submissionType));

            // if the assignment is of attachment-only or allow both text and attachment, include option for uploading student attachment
            context.put("includeSubmissionAttachment",
                    Boolean.valueOf(Assignment.ATTACHMENT_ONLY_ASSIGNMENT_SUBMISSION == submissionType
                            || Assignment.TEXT_AND_ATTACHMENT_ASSIGNMENT_SUBMISSION == submissionType
                            || Assignment.SINGLE_ATTACHMENT_SUBMISSION == submissionType));

            context.put("viewString",
                    state.getAttribute(VIEW_SUBMISSION_LIST_OPTION) != null
                            ? state.getAttribute(VIEW_SUBMISSION_LIST_OPTION)
                            : "");

            context.put("searchString",
                    state.getAttribute(VIEW_SUBMISSION_SEARCH) != null ? state.getAttribute(VIEW_SUBMISSION_SEARCH)
                            : "");

            context.put("showSubmissionByFilterSearchOnly",
                    state.getAttribute(SUBMISSIONS_SEARCH_ONLY) != null
                            && ((Boolean) state.getAttribute(SUBMISSIONS_SEARCH_ONLY)) ? Boolean.TRUE
                                    : Boolean.FALSE);
        }

        String template = (String) getContext(data).get("template");
        return template + TEMPLATE_INSTRUCTOR_UPLOAD_ALL;

    } // build_instructor_upload_all

    /**
     ** Retrieve tool title from Tool configuration file or use default
     ** (This should return i18n version of tool title if available)
     **/
    private String getToolTitle() {
        Tool tool = ToolManager.getTool(ASSIGNMENT_TOOL_ID);
        String toolTitle = null;

        if (tool == null)
            toolTitle = "Assignments";
        else
            toolTitle = tool.getTitle();

        return toolTitle;
    }

    /**
     * integration with gradebook
     *
     * @param state
     * @param assignmentRef Assignment reference
     * @param associateGradebookAssignment The title for the associated GB assignment
     * @param addUpdateRemoveAssignment "add" for adding the assignment; "update" for updating the assignment; "remove" for remove assignment
     * @param oldAssignment_title The original assignment title
     * @param newAssignment_title The updated assignment title
     * @param newAssignment_maxPoints The maximum point of the assignment
     * @param newAssignment_dueTime The due time of the assignment
     * @param submissionRef Any submission grade need to be updated? Do bulk update if null
     * @param updateRemoveSubmission "update" for update submission;"remove" for remove submission
     */
    protected void integrateGradebook(SessionState state, String assignmentRef, String associateGradebookAssignment,
            String addUpdateRemoveAssignment, String oldAssignment_title, String newAssignment_title,
            int newAssignment_maxPoints, Time newAssignment_dueTime, String submissionRef,
            String updateRemoveSubmission, long category) {
        associateGradebookAssignment = StringUtils.trimToNull(associateGradebookAssignment);

        // add or remove external grades to gradebook
        // a. if Gradebook does not exists, do nothing, 'cos setting should have been hidden
        // b. if Gradebook exists, just call addExternal and removeExternal and swallow any exception. The
        // exception are indication that the assessment is already in the Gradebook or there is nothing
        // to remove.
        String assignmentToolTitle = getToolTitle();

        GradebookService g = (GradebookService) ComponentManager
                .get("org.sakaiproject.service.gradebook.GradebookService");
        GradebookExternalAssessmentService gExternal = (GradebookExternalAssessmentService) ComponentManager
                .get("org.sakaiproject.service.gradebook.GradebookExternalAssessmentService");

        String gradebookUid = ToolManager.getCurrentPlacement().getContext();
        if (g.isGradebookDefined(gradebookUid) && g.currentUserHasGradingPerm(gradebookUid)) {
            boolean isExternalAssignmentDefined = gExternal.isExternalAssignmentDefined(gradebookUid,
                    assignmentRef);
            boolean isExternalAssociateAssignmentDefined = gExternal.isExternalAssignmentDefined(gradebookUid,
                    associateGradebookAssignment);
            boolean isAssignmentDefined = g.isAssignmentDefined(gradebookUid, associateGradebookAssignment);

            if (addUpdateRemoveAssignment != null) {
                Assignment a = getAssignment(assignmentRef, "integrateGradebook", state);
                // add an entry into Gradebook for newly created assignment or modified assignment, and there wasn't a correspond record in gradebook yet
                if ((addUpdateRemoveAssignment.equals(AssignmentService.GRADEBOOK_INTEGRATION_ADD)
                        || ("update".equals(addUpdateRemoveAssignment) && !isExternalAssignmentDefined))
                        && associateGradebookAssignment == null) {
                    // add assignment into gradebook
                    try {
                        // add assignment to gradebook
                        gExternal.addExternalAssessment(gradebookUid, assignmentRef, null, newAssignment_title,
                                newAssignment_maxPoints / (double) a.getContent().getFactor(),
                                new Date(newAssignment_dueTime.getTime()), assignmentToolTitle, false,
                                category != -1 ? Long.valueOf(category) : null);
                    } catch (AssignmentHasIllegalPointsException e) {
                        addAlert(state, rb.getString("addtogradebook.illegalPoints"));
                        M_log.warn(this + ":integrateGradebook " + e.getMessage());
                    } catch (ConflictingAssignmentNameException e) {
                        // add alert prompting for change assignment title
                        addAlert(state, rb.getFormattedMessage("addtogradebook.nonUniqueTitle",
                                new Object[] { "\"" + newAssignment_title + "\"" }));
                        M_log.warn(this + ":integrateGradebook " + e.getMessage());
                    } catch (Exception e) {
                        M_log.warn(this + ":integrateGradebook " + e.getMessage());
                    }
                } else if ("update".equals(addUpdateRemoveAssignment)) {
                    if (associateGradebookAssignment != null && isExternalAssociateAssignmentDefined) {
                        // if there is an external entry created in Gradebook based on this assignment, update it
                        try {
                            // update attributes if the GB assignment was created for the assignment
                            gExternal.updateExternalAssessment(gradebookUid, associateGradebookAssignment, null,
                                    newAssignment_title,
                                    newAssignment_maxPoints / (double) a.getContent().getFactor(),
                                    new Date(newAssignment_dueTime.getTime()), false);
                        } catch (Exception e) {
                            addAlert(state,
                                    rb.getFormattedMessage("cannotfin_assignment", new Object[] { assignmentRef }));
                            M_log.warn(this + ":integrateGradebook " + rb
                                    .getFormattedMessage("cannotfin_assignment", new Object[] { assignmentRef }));
                        }
                    }
                } // addUpdateRemove != null
                else if ("remove".equals(addUpdateRemoveAssignment)) {
                    // remove assignment and all submission grades
                    removeNonAssociatedExternalGradebookEntry((String) state.getAttribute(STATE_CONTEXT_STRING),
                            assignmentRef, associateGradebookAssignment, gExternal, gradebookUid);
                }
            }

            if (updateRemoveSubmission != null) {
                Assignment a = getAssignment(assignmentRef, "integrateGradebook", state);

                if (a != null) {
                    String propAddToGradebook = a.getProperties().getProperty(NEW_ASSIGNMENT_ADD_TO_GRADEBOOK);
                    if ("update".equals(updateRemoveSubmission)
                            && (StringUtils.equals(propAddToGradebook, AssignmentService.GRADEBOOK_INTEGRATION_ADD)
                                    || StringUtils.equals(propAddToGradebook,
                                            AssignmentService.GRADEBOOK_INTEGRATION_ASSOCIATE))
                            && a.getContent().getTypeOfGrade() == Assignment.SCORE_GRADE_TYPE) {
                        if (submissionRef == null) {
                            // bulk add all grades for assignment into gradebook
                            Iterator submissions = AssignmentService.getSubmissions(a).iterator();

                            //Assignment scores map
                            Map<String, String> sm = new HashMap<String, String>();
                            //Assignment comments map, though doesn't look like there's any way to update comments in bulk in the UI yet
                            Map<String, String> cm = new HashMap<String, String>();

                            // any score to copy over? get all the assessmentGradingData and copy over
                            while (submissions.hasNext()) {
                                AssignmentSubmission aSubmission = (AssignmentSubmission) submissions.next();
                                if (aSubmission.getGradeReleased()) {
                                    User[] submitters = aSubmission.getSubmitters();
                                    String gradeString = StringUtils.trimToNull(aSubmission.getGrade(false));
                                    String commentString = FormattedText
                                            .convertFormattedTextToPlaintext(aSubmission.getFeedbackComment());

                                    String grade = gradeString != null
                                            ? displayGrade(state, gradeString, a.getContent().getFactor())
                                            : null;
                                    for (int i = 0; submitters != null && i < submitters.length; i++) {
                                        String submitterId = submitters[i].getId();
                                        String gradeStringToUse = (a.isGroup()
                                                && aSubmission.getGradeForUser(submitterId) != null)
                                                        ? displayGrade(state,
                                                                aSubmission.getGradeForUser(submitterId),
                                                                a.getContent().getFactor())
                                                        : grade;
                                        sm.put(submitterId, gradeStringToUse);
                                        cm.put(submitterId, commentString);
                                    }
                                }
                            }

                            // need to update only when there is at least one submission
                            if (!sm.isEmpty()) {
                                if (associateGradebookAssignment != null) {
                                    if (isExternalAssociateAssignmentDefined) {
                                        // the associated assignment is externally maintained
                                        gExternal.updateExternalAssessmentScoresString(gradebookUid,
                                                associateGradebookAssignment, sm);
                                        gExternal.updateExternalAssessmentComments(gradebookUid,
                                                associateGradebookAssignment, cm);
                                    } else if (isAssignmentDefined) {
                                        Long associateGradebookAssignmentId = g
                                                .getAssignment(gradebookUid, associateGradebookAssignment).getId();
                                        // the associated assignment is internal one, update records one by one
                                        for (Map.Entry<String, String> entry : sm.entrySet()) {
                                            String submitterId = (String) entry.getKey();
                                            String grade = StringUtils.trimToNull(displayGrade(state,
                                                    (String) sm.get(submitterId), a.getContent().getFactor()));
                                            if (grade != null) {
                                                g.setAssignmentScoreString(gradebookUid,
                                                        associateGradebookAssignmentId, submitterId, grade, "");
                                                String comment = StringUtils.isNotEmpty(cm.get(submitterId))
                                                        ? cm.get(submitterId)
                                                        : "";
                                                g.setAssignmentScoreComment(gradebookUid,
                                                        associateGradebookAssignmentId, submitterId, comment);
                                            }
                                        }
                                    }
                                } else if (isExternalAssignmentDefined) {
                                    gExternal.updateExternalAssessmentScoresString(gradebookUid, assignmentRef, sm);
                                    gExternal.updateExternalAssessmentComments(gradebookUid,
                                            associateGradebookAssignment, cm);
                                }
                            }
                        } else {
                            // only update one submission
                            AssignmentSubmission aSubmission = getSubmission(submissionRef, "integrateGradebook",
                                    state);
                            if (aSubmission != null) {
                                int factor = aSubmission.getAssignment().getContent().getFactor();
                                User[] submitters = aSubmission.getSubmitters();
                                String gradeString = displayGrade(state,
                                        StringUtils.trimToNull(aSubmission.getGrade(false)), factor);
                                for (int i = 0; submitters != null && i < submitters.length; i++) {
                                    String gradeStringToUse = (a.isGroup()
                                            && aSubmission.getGradeForUser(submitters[i].getId()) != null)
                                                    ? displayGrade(state,
                                                            aSubmission.getGradeForUser(submitters[i].getId()),
                                                            factor)
                                                    : gradeString;
                                    //Gradebook only supports plaintext strings
                                    String commentString = FormattedText
                                            .convertFormattedTextToPlaintext(aSubmission.getFeedbackComment());
                                    if (associateGradebookAssignment != null) {
                                        if (gExternal.isExternalAssignmentDefined(gradebookUid,
                                                associateGradebookAssignment)) {
                                            // the associated assignment is externally maintained
                                            gExternal.updateExternalAssessmentScore(gradebookUid,
                                                    associateGradebookAssignment, submitters[i].getId(),
                                                    (gradeStringToUse != null && aSubmission.getGradeReleased())
                                                            ? gradeStringToUse
                                                            : "");
                                            gExternal.updateExternalAssessmentComment(gradebookUid,
                                                    associateGradebookAssignment, submitters[i].getId(),
                                                    (commentString != null && aSubmission.getGradeReleased())
                                                            ? commentString
                                                            : "");
                                        } else if (g.isAssignmentDefined(gradebookUid,
                                                associateGradebookAssignment)) {
                                            Long associateGradebookAssignmentId = g
                                                    .getAssignment(gradebookUid, associateGradebookAssignment)
                                                    .getId();
                                            // the associated assignment is internal one, update records
                                            g.setAssignmentScoreString(gradebookUid, associateGradebookAssignmentId,
                                                    submitters[i].getId(),
                                                    (gradeStringToUse != null && aSubmission.getGradeReleased())
                                                            ? gradeStringToUse
                                                            : "",
                                                    "");
                                            g.setAssignmentScoreComment(gradebookUid,
                                                    associateGradebookAssignmentId, submitters[i].getId(),
                                                    (commentString != null && aSubmission.getGradeReleased())
                                                            ? commentString
                                                            : "");
                                        }
                                    } else {
                                        gExternal.updateExternalAssessmentScore(gradebookUid, assignmentRef,
                                                submitters[i].getId(),
                                                (gradeStringToUse != null && aSubmission.getGradeReleased())
                                                        ? gradeStringToUse
                                                        : "");
                                        gExternal.updateExternalAssessmentComment(gradebookUid, assignmentRef,
                                                submitters[i].getId(),
                                                (commentString != null && aSubmission.getGradeReleased())
                                                        ? commentString
                                                        : "");
                                    }
                                }
                            }
                        }

                    } else if ("remove".equals(updateRemoveSubmission)) {
                        if (submissionRef == null) {
                            // remove all submission grades (when changing the associated entry in Gradebook)
                            Iterator submissions = AssignmentService.getSubmissions(a).iterator();

                            // any score to copy over? get all the assessmentGradingData and copy over
                            while (submissions.hasNext()) {
                                AssignmentSubmission aSubmission = (AssignmentSubmission) submissions.next();
                                if (aSubmission.getGrade(false) != null) {
                                    User[] submitters = aSubmission.getSubmitters();
                                    for (int i = 0; submitters != null && i < submitters.length; i++) {
                                        if (isExternalAssociateAssignmentDefined) {
                                            // if the old associated assignment is an external maintained one
                                            gExternal.updateExternalAssessmentScore(gradebookUid,
                                                    associateGradebookAssignment, submitters[i].getId(), null);
                                        } else if (isAssignmentDefined) {
                                            g.setAssignmentScoreString(gradebookUid, associateGradebookAssignment,
                                                    submitters[i].getId(), "0", assignmentToolTitle);
                                        }
                                    }
                                }
                            }
                        } else {
                            // remove only one submission grade
                            AssignmentSubmission aSubmission = getSubmission(submissionRef, "integrateGradebook",
                                    state);
                            if (aSubmission != null) {
                                User[] submitters = aSubmission.getSubmitters();
                                for (int i = 0; submitters != null && i < submitters.length; i++) {

                                    if (isExternalAssociateAssignmentDefined) {
                                        // external assignment
                                        gExternal.updateExternalAssessmentScore(gradebookUid, assignmentRef,
                                                submitters[i].getId(), null);
                                    } else if (isAssignmentDefined) {
                                        // gb assignment
                                        g.setAssignmentScoreString(gradebookUid, associateGradebookAssignment,
                                                submitters[i].getId(), "0", "");
                                    }
                                }
                            }
                        }
                    }
                }
            }
        }
    } // integrateGradebook

    /**
     * Go to the instructor view
     */
    public void doView_instructor(RunData data) {
        SessionState state = ((JetspeedRunData) data).getPortletSessionState(((JetspeedRunData) data).getJs_peid());

        state.setAttribute(STATE_MODE, MODE_LIST_ASSIGNMENTS);
        state.setAttribute(SORTED_BY, SORTED_BY_DEFAULT);
        state.setAttribute(SORTED_ASC, Boolean.TRUE.toString());

    } // doView_instructor

    /**
     * Go to the student view
     */
    public void doView_student(RunData data) {
        SessionState state = ((JetspeedRunData) data).getPortletSessionState(((JetspeedRunData) data).getJs_peid());

        // to the student list of assignment view
        state.setAttribute(SORTED_BY, SORTED_BY_DEFAULT);
        state.setAttribute(STATE_MODE, MODE_LIST_ASSIGNMENTS);

    } // doView_student

    public void doView_submission_evap(RunData data) {
        SessionState state = ((JetspeedRunData) data).getPortletSessionState(((JetspeedRunData) data).getJs_peid());
        state.setAttribute(INVOKE, INVOKE_BY_LINK);
        doView_submission(data);
    }

    /**
     * Action is to view the content of one specific assignment submission
     */
    public void doView_submission(RunData data) {
        SessionState state = ((JetspeedRunData) data).getPortletSessionState(((JetspeedRunData) data).getJs_peid());

        // reset the submission context
        resetViewSubmission(state);

        ParameterParser params = data.getParameters();
        String assignmentReference = params.getString("assignmentReference");
        state.setAttribute(VIEW_SUBMISSION_ASSIGNMENT_REFERENCE, assignmentReference);

        User u = (User) state.getAttribute(STATE_USER);

        // redirect student to doView_grade if they clicked an old link
        String contextString = (String) state.getAttribute(STATE_CONTEXT_STRING);
        Assignment a = getAssignment(assignmentReference, "doView_submission", state);
        if (a != null && !AssignmentService.canSubmit(contextString, a)) {
            AssignmentSubmission submission = null;
            try {
                submission = AssignmentService.getSubmission(assignmentReference, u);
            } catch (Exception e) {
                String userId = u == null ? "" : u.getId();
                addAlert(state, rb.getFormattedMessage("cannotfin_submission_1",
                        new String[] { assignmentReference, userId }));
            }
            if (submission != null) {
                String submissionReference = submission.getReference();
                prepareStudentViewGrade(state, submissionReference);
                return;
            }
        }

        String submitterId = params.get("submitterId");
        if (submitterId != null && (AssignmentService.allowGradeSubmission(assignmentReference))) {
            try {
                u = UserDirectoryService.getUser(submitterId);
                state.setAttribute("student", u);
            } catch (UserNotDefinedException ex) {
                M_log.warn(this + ":doView_submission cannot find user with id " + submitterId + " "
                        + ex.getMessage());
            }
        }

        if (a != null) {
            AssignmentSubmission submission = getSubmission(assignmentReference, u, "doView_submission", state);
            if (submission != null) {
                state.setAttribute(VIEW_SUBMISSION_TEXT, submission.getSubmittedText());
                state.setAttribute(VIEW_SUBMISSION_HONOR_PLEDGE_YES,
                        (Boolean.valueOf(submission.getHonorPledgeFlag())).toString());
                List v = EntityManager.newReferenceList();
                Iterator l = submission.getSubmittedAttachments().iterator();
                while (l.hasNext()) {
                    v.add(l.next());
                }
                state.setAttribute(ATTACHMENTS, v);
            } else {
                state.setAttribute(VIEW_SUBMISSION_HONOR_PLEDGE_YES, "false");
                state.setAttribute(ATTACHMENTS, EntityManager.newReferenceList());
            }

            // put resubmission option into state
            assignment_resubmission_option_into_state(a, submission, state);

            // show submission view unless group submission with group error
            String _mode = MODE_STUDENT_VIEW_SUBMISSION;
            if (a.isGroup()) {
                Collection<Group> groups = null;
                Site st = null;
                try {
                    st = SiteService.getSite((String) state.getAttribute(STATE_CONTEXT_STRING));
                    groups = getGroupsWithUser(u.getId(), a, st);
                    Collection<String> _dupUsers = checkForGroupsInMultipleGroups(a, groups, state,
                            rb.getString("group.user.multiple.warning"));
                    if (_dupUsers.size() > 0) {
                        _mode = MODE_STUDENT_VIEW_GROUP_ERROR;
                    }
                } catch (IdUnusedException iue) {
                    M_log.warn(this + ":doView_submission: Site not found!" + iue.getMessage());
                }
            }
            state.setAttribute(STATE_MODE, _mode);

            if (submission != null) {
                // submission read event
                Event event = m_eventTrackingService.newEvent(
                        AssignmentConstants.EVENT_ACCESS_ASSIGNMENT_SUBMISSION, submission.getId(), false);
                m_eventTrackingService.post(event);
                LearningResourceStoreService lrss = (LearningResourceStoreService) ComponentManager
                        .get("org.sakaiproject.event.api.LearningResourceStoreService");
                if (null != lrss) {
                    lrss.registerStatement(
                            getStatementForViewSubmittedAssignment(lrss.getEventActor(event), event, a.getTitle()),
                            "assignment");
                }
            } else {
                // otherwise, the student just read assignment description and prepare for submission
                Event event = m_eventTrackingService.newEvent(AssignmentConstants.EVENT_ACCESS_ASSIGNMENT,
                        a.getId(), false);
                m_eventTrackingService.post(event);
                LearningResourceStoreService lrss = (LearningResourceStoreService) ComponentManager
                        .get("org.sakaiproject.event.api.LearningResourceStoreService");
                if (null != lrss) {
                    lrss.registerStatement(
                            getStatementForViewAssignment(lrss.getEventActor(event), event, a.getTitle()),
                            "assignment");
                }
            }
        }

    } // doView_submission

    /**
     * Dispatcher for view submission list options
     */
    public void doView_submission_list_option(RunData data) {
        SessionState state = ((JetspeedRunData) data).getPortletSessionState(((JetspeedRunData) data).getJs_peid());

        ParameterParser params = data.getParameters();
        String option = params.getString("option");
        if ("changeView".equals(option)) {
            doChange_submission_list_option(data);
        } else if ("search".equals(option)) {
            state.setAttribute(VIEW_SUBMISSION_SEARCH, params.getString("search"));
        } else if ("clearSearch".equals(option)) {
            state.removeAttribute(VIEW_SUBMISSION_SEARCH);
        } else if ("download".equals(option)) {
            // go to download all page
            doPrep_download_all(data);
        } else if ("upload".equals(option)) {
            // go to upload all page
            doPrep_upload_all(data);
        } else if ("releaseGrades".equals(option)) {
            // release all grades
            doRelease_grades(data);
        }

    } // doView_submission_list_option

    /**
     * Action is to view the content of one specific assignment submission
     */
    public void doChange_submission_list_option(RunData data) {
        SessionState state = ((JetspeedRunData) data).getPortletSessionState(((JetspeedRunData) data).getJs_peid());
        ParameterParser params = data.getParameters();
        String view = params.getString("viewgroup");
        //Case where two dropdowns on same page
        if (view == null) {
            view = params.getString("view");
        }
        state.setAttribute(VIEW_SUBMISSION_LIST_OPTION, view);

    } // doView_submission_list_option

    /**
     * Preview of the submission
     */
    public void doPreview_submission(RunData data) {
        SessionState state = ((JetspeedRunData) data).getPortletSessionState(((JetspeedRunData) data).getJs_peid());

        ParameterParser params = data.getParameters();
        String aReference = (String) state.getAttribute(VIEW_SUBMISSION_ASSIGNMENT_REFERENCE);
        state.setAttribute(PREVIEW_SUBMISSION_ASSIGNMENT_REFERENCE, aReference);
        Assignment a = getAssignment(aReference, "doPreview_submission", state);

        saveSubmitInputs(state, params);

        // retrieve the submission text (as formatted text)
        boolean checkForFormattingErrors = true; // the student is submitting something - so check for errors
        String text = processFormattedTextFromBrowser(state, params.getCleanString(VIEW_SUBMISSION_TEXT),
                checkForFormattingErrors);

        state.setAttribute(PREVIEW_SUBMISSION_TEXT, text);
        state.setAttribute(VIEW_SUBMISSION_TEXT, text);

        // assign the honor pledge attribute
        String honor_pledge_yes = params.getString(VIEW_SUBMISSION_HONOR_PLEDGE_YES);
        if (honor_pledge_yes == null) {
            honor_pledge_yes = "false";
        }
        state.setAttribute(PREVIEW_SUBMISSION_HONOR_PLEDGE_YES, honor_pledge_yes);
        state.setAttribute(VIEW_SUBMISSION_HONOR_PLEDGE_YES, honor_pledge_yes);

        // get attachment input and generate alert message according to assignment submission type
        checkSubmissionTextAttachmentInput(data, state, a, text);
        state.setAttribute(PREVIEW_SUBMISSION_ATTACHMENTS, state.getAttribute(ATTACHMENTS));

        if (state.getAttribute(STATE_MESSAGE) == null) {
            state.setAttribute(STATE_MODE, MODE_STUDENT_PREVIEW_SUBMISSION);
        }
    } // doPreview_submission

    /**
     * Preview of the grading of submission
     */
    public void doPreview_grade_submission(RunData data) {
        SessionState state = ((JetspeedRunData) data).getPortletSessionState(((JetspeedRunData) data).getJs_peid());

        // read user input
        readGradeForm(data, state, "read");

        if (state.getAttribute(STATE_MESSAGE) == null) {
            state.setAttribute(STATE_MODE, MODE_INSTRUCTOR_PREVIEW_GRADE_SUBMISSION);
        }

    } // doPreview_grade_submission

    /**
     * Action is to end the preview submission process
     */
    public void doDone_preview_submission(RunData data) {
        SessionState state = ((JetspeedRunData) data).getPortletSessionState(((JetspeedRunData) data).getJs_peid());

        // back to the student list view of assignments
        state.setAttribute(STATE_MODE, MODE_STUDENT_VIEW_SUBMISSION);

    } // doDone_preview_submission

    /**
     * Action is to end the view assignment process
     */
    public void doDone_view_assignment(RunData data) {
        SessionState state = ((JetspeedRunData) data).getPortletSessionState(((JetspeedRunData) data).getJs_peid());

        // back to the student list view of assignments
        state.setAttribute(STATE_MODE, MODE_LIST_ASSIGNMENTS);

    } // doDone_view_assignments

    /**
     * Action is to end the preview new assignment process
     */
    public void doDone_preview_new_assignment(RunData data) {
        SessionState state = ((JetspeedRunData) data).getPortletSessionState(((JetspeedRunData) data).getJs_peid());

        // back to the new assignment page
        state.setAttribute(STATE_MODE, MODE_INSTRUCTOR_NEW_EDIT_ASSIGNMENT);

    } // doDone_preview_new_assignment

    /**
     * Action is to end the user view assignment process and redirect him to the assignment list view
     */
    public void doCancel_student_view_assignment(RunData data) {
        SessionState state = ((JetspeedRunData) data).getPortletSessionState(((JetspeedRunData) data).getJs_peid());

        // reset the view assignment
        state.setAttribute(VIEW_ASSIGNMENT_ID, "");

        // back to the student list view of assignments
        state.setAttribute(STATE_MODE, MODE_LIST_ASSIGNMENTS);

    } // doCancel_student_view_assignment

    /**
     * Action is to end the show submission process
     */
    public void doCancel_show_submission(RunData data) {
        SessionState state = ((JetspeedRunData) data).getPortletSessionState(((JetspeedRunData) data).getJs_peid());

        // reset the view assignment
        state.setAttribute(VIEW_ASSIGNMENT_ID, "");

        String fromView = (String) state.getAttribute(FROM_VIEW);
        if (MODE_INSTRUCTOR_VIEW_STUDENTS_ASSIGNMENT.equals(fromView)) {
            state.setAttribute(STATE_MODE, MODE_INSTRUCTOR_VIEW_STUDENTS_ASSIGNMENT);
        } else {
            // back to the student list view of assignments
            state.setAttribute(STATE_MODE, MODE_LIST_ASSIGNMENTS);
        }

    } // doCancel_show_submission

    /**
     * Action is to cancel the delete assignment process
     */
    public void doCancel_delete_assignment(RunData data) {
        SessionState state = ((JetspeedRunData) data).getPortletSessionState(((JetspeedRunData) data).getJs_peid());

        // reset the show assignment object
        state.setAttribute(DELETE_ASSIGNMENT_IDS, new ArrayList());

        // back to the instructor list view of assignments
        state.setAttribute(STATE_MODE, MODE_LIST_ASSIGNMENTS);

    } // doCancel_delete_assignment

    /**
     * Action is to end the show submission process
     */
    public void doCancel_edit_assignment(RunData data) {
        SessionState state = ((JetspeedRunData) data).getPortletSessionState(((JetspeedRunData) data).getJs_peid());

        // reset the assignment object
        resetAssignment(state);

        // back to the student list view of assignments
        state.setAttribute(STATE_MODE, MODE_LIST_ASSIGNMENTS);

        // reset sorting
        setDefaultSort(state);

    } // doCancel_edit_assignment

    /**
     * Action is to end the show submission process
     */
    public void doCancel_new_assignment(RunData data) {
        SessionState state = ((JetspeedRunData) data).getPortletSessionState(((JetspeedRunData) data).getJs_peid());

        // reset the assignment object
        resetAssignment(state);

        // back to the student list view of assignments
        state.setAttribute(STATE_MODE, MODE_LIST_ASSIGNMENTS);

        // reset sorting
        setDefaultSort(state);

    } // doCancel_new_assignment

    /**
     * Action is to cancel the grade submission process
     */
    public void doCancel_grade_submission(RunData data) {
        // put submission information into state
        SessionState state = ((JetspeedRunData) data).getPortletSessionState(((JetspeedRunData) data).getJs_peid());
        String sId = (String) state.getAttribute(GRADE_SUBMISSION_SUBMISSION_ID);
        String assignmentId = (String) state.getAttribute(GRADE_SUBMISSION_ASSIGNMENT_ID);

        // SAK-29314
        boolean viewSubsOnlySelected = stringToBool(
                (String) data.getParameters().getString(PARAMS_VIEW_SUBS_ONLY_CHECKBOX));
        putSubmissionInfoIntoState(state, assignmentId, sId, viewSubsOnlySelected);

        String fromView = (String) state.getAttribute(FROM_VIEW);
        if (MODE_INSTRUCTOR_VIEW_STUDENTS_ASSIGNMENT.equals(fromView)) {
            state.setAttribute(STATE_MODE, MODE_INSTRUCTOR_VIEW_STUDENTS_ASSIGNMENT);
        } else {
            state.setAttribute(STATE_MODE, MODE_INSTRUCTOR_GRADE_SUBMISSION);
        }
    } // doCancel_grade_submission

    /**
     * clean the state variables related to grading page
     * @param state
     */
    private void resetGradeSubmission(SessionState state) {
        // reset the grade parameters
        state.removeAttribute(GRADE_SUBMISSION_FEEDBACK_COMMENT);
        state.removeAttribute(GRADE_SUBMISSION_FEEDBACK_TEXT);
        state.removeAttribute(GRADE_SUBMISSION_FEEDBACK_ATTACHMENT);
        // remove all GRADE_SUBMISSION_GRADE states including possible grade overrides
        // looking like GRADE_SUBMISSION_GRADE_[id of user]
        Iterator<String> _attribute_names = state.getAttributeNames().iterator();
        while (_attribute_names.hasNext()) {
            String _attribute_name = _attribute_names.next();
            if (_attribute_name.startsWith(GRADE_SUBMISSION_GRADE)) {
                state.removeAttribute(_attribute_name);
            }
        }
        state.removeAttribute(GRADE_SUBMISSION_SUBMISSION_ID);
        state.removeAttribute(GRADE_GREATER_THAN_MAX_ALERT);
        state.removeAttribute(GRADE_SUBMISSION_DONE);
        state.removeAttribute(GRADE_SUBMISSION_SUBMIT);
        state.removeAttribute(AssignmentSubmission.ALLOW_RESUBMIT_NUMBER);

        // SAK-29314
        state.removeAttribute(STATE_VIEW_SUBS_ONLY);

        resetAllowResubmitParams(state);
    }

    /**
     * Action is to cancel the preview grade process
     */
    public void doCancel_preview_grade_submission(RunData data) {
        SessionState state = ((JetspeedRunData) data).getPortletSessionState(((JetspeedRunData) data).getJs_peid());

        // back to the instructor view of grading a submission
        state.setAttribute(STATE_MODE, MODE_INSTRUCTOR_GRADE_SUBMISSION);

    } // doCancel_preview_grade_submission

    /**
     * Action is to cancel the reorder process
     */
    public void doCancel_reorder(RunData data) {
        SessionState state = ((JetspeedRunData) data).getPortletSessionState(((JetspeedRunData) data).getJs_peid());

        // back to the list view of assignments
        state.setAttribute(STATE_MODE, MODE_LIST_ASSIGNMENTS);

    } // doCancel_reorder

    /**
     * Action is to cancel the preview grade process
     */
    public void doCancel_preview_to_list_submission(RunData data) {
        doCancel_grade_submission(data);

    } // doCancel_preview_to_list_submission

    /**
     * Action is to return to the view of list assignments
     */
    public void doList_assignments(RunData data) {
        SessionState state = ((JetspeedRunData) data).getPortletSessionState(((JetspeedRunData) data).getJs_peid());

        // back to the student list view of assignments
        state.setAttribute(STATE_MODE, MODE_LIST_ASSIGNMENTS);
        state.setAttribute(SORTED_BY, SORTED_BY_DEFAULT);
        state.setAttribute(SORTED_ASC, Boolean.TRUE.toString());

    } // doList_assignments

    /**
     * Action is to cancel the student view grade process
     */
    public void doCancel_view_grade(RunData data) {
        SessionState state = ((JetspeedRunData) data).getPortletSessionState(((JetspeedRunData) data).getJs_peid());

        // reset the view grade submission id
        state.setAttribute(VIEW_GRADE_SUBMISSION_ID, "");

        // back to the student list view of assignments
        state.setAttribute(STATE_MODE, MODE_LIST_ASSIGNMENTS);

    } // doCancel_view_grade

    /**
     * Action is to save the grade to submission
     */
    public void doSave_grade_submission(RunData data) {
        if (!"POST".equals(data.getRequest().getMethod())) {
            return;
        }

        SessionState state = ((JetspeedRunData) data).getPortletSessionState(((JetspeedRunData) data).getJs_peid());
        readGradeForm(data, state, "save");
        if (state.getAttribute(STATE_MESSAGE) == null) {
            grade_submission_option(data, "save");
        }

    } // doSave_grade_submission

    public void doSave_grade_submission_review(RunData data) {
        if (!"POST".equals(data.getRequest().getMethod())) {
            return;
        }

        SessionState state = ((JetspeedRunData) data).getPortletSessionState(((JetspeedRunData) data).getJs_peid());
        saveReviewGradeForm(data, state, "save");
    }

    public void doSave_toggle_remove_review(RunData data) {
        SessionState state = ((JetspeedRunData) data).getPortletSessionState(((JetspeedRunData) data).getJs_peid());
        if (state.getAttribute(PEER_ASSESSMENT_ASSESSOR_ID) != null) {
            String peerAssessor = (String) state.getAttribute(PEER_ASSESSMENT_ASSESSOR_ID);
            ParameterParser params = data.getParameters();
            String submissionRef = params.getString("submissionId");
            String submissionId = null;
            if (submissionRef != null) {
                int i = submissionRef.lastIndexOf(Entity.SEPARATOR);
                if (i == -1) {
                    submissionId = submissionRef;
                } else {
                    submissionId = submissionRef.substring(i + 1);
                }
            }
            if (submissionId != null) {
                //call the DB to make sure this user can edit this assessment, otherwise it wouldn't exist
                PeerAssessmentItem item = assignmentPeerAssessmentService.getPeerAssessmentItem(submissionId,
                        peerAssessor);
                if (item != null) {
                    item.setRemoved(!item.isRemoved());
                    assignmentPeerAssessmentService.savePeerAssessmentItem(item);
                    if (item.getScore() != null) {
                        //item was part of the calculation, re-calculate
                        boolean saved = assignmentPeerAssessmentService.updateScore(submissionId);
                        if (saved) {
                            //we need to make sure the GB is updated correctly (or removed)
                            String assignmentId = item.getAssignmentId();
                            if (assignmentId != null) {
                                Assignment a = getAssignment(assignmentId, "saveReviewGradeForm", state);
                                if (a != null) {
                                    String aReference = a.getReference();
                                    String associateGradebookAssignment = StringUtils
                                            .trimToNull(a.getProperties().getProperty(
                                                    AssignmentService.PROP_ASSIGNMENT_ASSOCIATE_GRADEBOOK_ASSIGNMENT));
                                    // update grade in gradebook
                                    integrateGradebook(state, aReference, associateGradebookAssignment, null, null,
                                            null, -1, null, submissionId, "update", -1);
                                }
                            }
                        }
                    }
                    state.setAttribute(GRADE_SUBMISSION_DONE, Boolean.TRUE);
                    state.setAttribute(PEER_ASSESSMENT_REMOVED_STATUS, item.isRemoved());
                    //update session state:
                    List<PeerAssessmentItem> peerAssessmentItems = (List<PeerAssessmentItem>) state
                            .getAttribute(PEER_ASSESSMENT_ITEMS);
                    if (peerAssessmentItems != null) {
                        for (int i = 0; i < peerAssessmentItems.size(); i++) {
                            PeerAssessmentItem sItem = peerAssessmentItems.get(i);
                            if (sItem.getSubmissionId().equals(item.getSubmissionId())
                                    && sItem.getAssessorUserId().equals(item.getAssessorUserId())) {
                                //found it, just update it
                                peerAssessmentItems.set(i, item);
                                state.setAttribute(PEER_ASSESSMENT_ITEMS, peerAssessmentItems);
                                break;
                            }
                        }
                    }
                }
            }
        }
    }

    /**
     * Action is to release the grade to submission
     */
    public void doRelease_grade_submission(RunData data) {
        if (!"POST".equals(data.getRequest().getMethod())) {
            return;
        }

        SessionState state = ((JetspeedRunData) data).getPortletSessionState(((JetspeedRunData) data).getJs_peid());
        readGradeForm(data, state, "release");
        if (state.getAttribute(STATE_MESSAGE) == null) {
            grade_submission_option(data, "release");
        }

    } // doRelease_grade_submission

    /**
     * Action is to return submission with or without grade
     */
    public void doReturn_grade_submission(RunData data) {
        if (!"POST".equals(data.getRequest().getMethod())) {
            return;
        }

        SessionState state = ((JetspeedRunData) data).getPortletSessionState(((JetspeedRunData) data).getJs_peid());
        readGradeForm(data, state, "return");
        if (state.getAttribute(STATE_MESSAGE) == null) {
            grade_submission_option(data, "return");
        }

    } // doReturn_grade_submission

    /**
     * Action is to return submission with or without grade from preview
     */
    public void doReturn_preview_grade_submission(RunData data) {
        if (!"POST".equals(data.getRequest().getMethod())) {
            return;
        }

        grade_submission_option(data, "return");

    } // doReturn_grade_preview_submission

    /**
     * Action is to save submission with or without grade from preview
     */
    public void doSave_preview_grade_submission(RunData data) {
        if (!"POST".equals(data.getRequest().getMethod())) {
            return;
        }

        grade_submission_option(data, "save");

    } // doSave_grade_preview_submission

    /**
     * Common grading routine plus specific operation to differenciate cases when saving, releasing or returning grade.
     */
    private void grade_submission_option(RunData data, String gradeOption) {
        SessionState state = ((JetspeedRunData) data).getPortletSessionState(((JetspeedRunData) data).getJs_peid());

        boolean withGrade = state.getAttribute(WITH_GRADES) != null
                ? ((Boolean) state.getAttribute(WITH_GRADES)).booleanValue()
                : false;

        String sId = (String) state.getAttribute(GRADE_SUBMISSION_SUBMISSION_ID);
        String assignmentId = (String) state.getAttribute(GRADE_SUBMISSION_ASSIGNMENT_ID);

        // for points grading, one have to enter number as the points
        String grade = (String) state.getAttribute(GRADE_SUBMISSION_GRADE);

        AssignmentSubmissionEdit sEdit = editSubmission(sId, "grade_submission_option", state);
        if (sEdit != null) {
            //This logic could be done in one line, but would be harder to read, so break it out to make it easier to follow
            boolean gradeChanged = false;
            if ((sEdit.getGrade() == null || "".equals(sEdit.getGrade().trim()))
                    && (grade == null || "".equals(grade.trim()))) {
                //both are null, keep grade changed = false
            } else if ((sEdit.getGrade() == null || "".equals(sEdit.getGrade().trim())
                    || (grade == null || "".equals(grade.trim())))) {
                //one is null the other isn't
                gradeChanged = true;
            } else if (!grade.trim().equals(sEdit.getGrade().trim())) {
                gradeChanged = true;
            }
            Assignment a = sEdit.getAssignment();
            int typeOfGrade = a.getContent().getTypeOfGrade();

            if (!withGrade) {
                // no grade input needed for the without-grade version of assignment tool
                sEdit.setGraded(true);
                if (gradeChanged) {
                    sEdit.setGradedBy(UserDirectoryService.getCurrentUser() == null ? null
                            : UserDirectoryService.getCurrentUser().getId());
                }
                if ("return".equals(gradeOption) || "release".equals(gradeOption)) {
                    sEdit.setGradeReleased(true);
                }
            } else if (grade == null) {
                sEdit.setGrade("");
                sEdit.setGraded(false);
                if (gradeChanged) {
                    sEdit.setGradedBy(null);
                }
                sEdit.setGradeReleased(false);
            } else {
                sEdit.setGrade(grade);

                if (grade.length() != 0) {
                    sEdit.setGraded(true);
                    if (gradeChanged) {
                        sEdit.setGradedBy(UserDirectoryService.getCurrentUser() == null ? null
                                : UserDirectoryService.getCurrentUser().getId());
                    }
                } else {
                    sEdit.setGraded(false);
                    if (gradeChanged) {
                        sEdit.setGradedBy(null);
                    }
                }
            }

            // iterate through submitters and look for grade overrides...
            if (withGrade && a.isGroup()) {
                User[] _users = sEdit.getSubmitters();
                for (int i = 0; _users != null && i < _users.length; i++) {
                    String _gr = (String) state.getAttribute(GRADE_SUBMISSION_GRADE + "_" + _users[i].getId());
                    sEdit.addGradeForUser(_users[i].getId(), _gr);
                }
            }

            if ("release".equals(gradeOption)) {
                sEdit.setGradeReleased(true);
                sEdit.setGraded(true);
                if (gradeChanged) {
                    sEdit.setGradedBy(UserDirectoryService.getCurrentUser() == null ? null
                            : UserDirectoryService.getCurrentUser().getId());
                }
                // clear the returned flag
                sEdit.setReturned(false);
                sEdit.setTimeReturned(null);
            } else if ("return".equals(gradeOption)) {
                sEdit.setGradeReleased(true);
                sEdit.setGraded(true);
                if (gradeChanged) {
                    sEdit.setGradedBy(UserDirectoryService.getCurrentUser() == null ? null
                            : UserDirectoryService.getCurrentUser().getId());
                }
                sEdit.setReturned(true);
                sEdit.setTimeReturned(TimeService.newTime());
                sEdit.setHonorPledgeFlag(Boolean.FALSE.booleanValue());
            } else if ("save".equals(gradeOption)) {
                sEdit.setGradeReleased(false);
                sEdit.setReturned(false);
                sEdit.setTimeReturned(null);
            }

            ResourcePropertiesEdit pEdit = sEdit.getPropertiesEdit();
            if (state.getAttribute(AssignmentSubmission.ALLOW_RESUBMIT_NUMBER) != null) {
                // get resubmit number
                pEdit.addProperty(AssignmentSubmission.ALLOW_RESUBMIT_NUMBER,
                        (String) state.getAttribute(AssignmentSubmission.ALLOW_RESUBMIT_NUMBER));

                if (state.getAttribute(ALLOW_RESUBMIT_CLOSEYEAR) != null) {
                    // get resubmit time
                    Time closeTime = getTimeFromState(state, ALLOW_RESUBMIT_CLOSEMONTH, ALLOW_RESUBMIT_CLOSEDAY,
                            ALLOW_RESUBMIT_CLOSEYEAR, ALLOW_RESUBMIT_CLOSEHOUR, ALLOW_RESUBMIT_CLOSEMIN);
                    pEdit.addProperty(AssignmentSubmission.ALLOW_RESUBMIT_CLOSETIME,
                            String.valueOf(closeTime.getTime()));
                } else {
                    pEdit.removeProperty(AssignmentSubmission.ALLOW_RESUBMIT_CLOSETIME);
                }
            } else {
                // clean resubmission property
                pEdit.removeProperty(AssignmentSubmission.ALLOW_RESUBMIT_CLOSETIME);
                pEdit.removeProperty(AssignmentSubmission.ALLOW_RESUBMIT_NUMBER);
            }

            // the instructor comment
            String feedbackCommentString = StringUtils
                    .trimToNull((String) state.getAttribute(GRADE_SUBMISSION_FEEDBACK_COMMENT));
            if (feedbackCommentString != null) {
                sEdit.setFeedbackComment(feedbackCommentString);
            } else {
                sEdit.setFeedbackComment("");
            }

            // the instructor inline feedback
            String feedbackTextString = (String) state.getAttribute(GRADE_SUBMISSION_FEEDBACK_TEXT);
            if (feedbackTextString != null) {
                sEdit.setFeedbackText(feedbackTextString);
            }

            List v = (List) state.getAttribute(GRADE_SUBMISSION_FEEDBACK_ATTACHMENT);
            if (v != null) {

                // clear the old attachments first
                sEdit.clearFeedbackAttachments();

                for (int i = 0; i < v.size(); i++) {
                    sEdit.addFeedbackAttachment((Reference) v.get(i));
                }
            }

            String sReference = sEdit.getReference();

            // save a timestamp for this grading process
            sEdit.getPropertiesEdit().addProperty(AssignmentConstants.PROP_LAST_GRADED_DATE,
                    TimeService.newTime().toStringLocalFull());

            AssignmentService.commitEdit(sEdit);

            // update grades in gradebook
            String aReference = a.getReference();
            String associateGradebookAssignment = StringUtils.trimToNull(a.getProperties()
                    .getProperty(AssignmentService.PROP_ASSIGNMENT_ASSOCIATE_GRADEBOOK_ASSIGNMENT));

            if (!"remove".equals(gradeOption)) {
                // update grade in gradebook
                integrateGradebook(state, aReference, associateGradebookAssignment, null, null, null, -1, null,
                        sReference, "update", -1);
            } else {
                //remove grade from gradebook
                integrateGradebook(state, aReference, associateGradebookAssignment, null, null, null, -1, null,
                        sReference, "remove", -1);
            }
        }

        if (state.getAttribute(STATE_MESSAGE) == null) {
            // SAK-29314 - put submission information into state
            boolean viewSubsOnlySelected = stringToBool(
                    (String) data.getParameters().getString(PARAMS_VIEW_SUBS_ONLY_CHECKBOX));
            putSubmissionInfoIntoState(state, assignmentId, sId, viewSubsOnlySelected);

            state.setAttribute(STATE_MODE, MODE_INSTRUCTOR_GRADE_SUBMISSION);
            state.setAttribute(GRADE_SUBMISSION_DONE, Boolean.TRUE);
        } else {
            state.removeAttribute(GRADE_SUBMISSION_DONE);
        }

        // SAK-29314 - update the list being iterated over
        sizeResources(state);

    } // grade_submission_option

    /**
     * Action is to save the submission as a draft
     */
    public void doSave_submission(RunData data) {
        if (!"POST".equals(data.getRequest().getMethod())) {
            return;
        }

        // save submission
        post_save_submission(data, false);
    } // doSave_submission

    /**
     * set the resubmission related properties in AssignmentSubmission object
     * @param a
     * @param edit
     */
    private void setResubmissionProperties(Assignment a, AssignmentSubmissionEdit edit) {
        // get the assignment setting for resubmitting
        ResourceProperties assignmentProperties = a.getProperties();
        String assignmentAllowResubmitNumber = assignmentProperties
                .getProperty(AssignmentSubmission.ALLOW_RESUBMIT_NUMBER);
        if (assignmentAllowResubmitNumber != null) {
            edit.getPropertiesEdit().addProperty(AssignmentSubmission.ALLOW_RESUBMIT_NUMBER,
                    assignmentAllowResubmitNumber);

            String assignmentAllowResubmitCloseDate = assignmentProperties
                    .getProperty(AssignmentSubmission.ALLOW_RESUBMIT_CLOSETIME);
            // if assignment's setting of resubmit close time is null, use assignment close time as the close time for resubmit
            edit.getPropertiesEdit().addProperty(AssignmentSubmission.ALLOW_RESUBMIT_CLOSETIME,
                    assignmentAllowResubmitCloseDate != null ? assignmentAllowResubmitCloseDate
                            : String.valueOf(a.getCloseTime().getTime()));
        }
    }

    /**
     * Action is to post the submission
     */
    public void doPost_submission(RunData data) {

        if (!"POST".equals(data.getRequest().getMethod())) {
            return;
        }
        // post submission
        post_save_submission(data, true);

    } // doPost_submission

    /**
     * Inner method used for post or save submission
     * @param data
     * @param post
     */
    private void post_save_submission(RunData data, boolean post) {
        SessionState state = ((JetspeedRunData) data).getPortletSessionState(((JetspeedRunData) data).getJs_peid());

        String contextString = (String) state.getAttribute(STATE_CONTEXT_STRING);
        String aReference = (String) state.getAttribute(VIEW_SUBMISSION_ASSIGNMENT_REFERENCE);
        Assignment a = getAssignment(aReference, "post_save_submission", state);

        if (a != null && AssignmentService.canSubmit(contextString, a)) {
            ParameterParser params = data.getParameters();
            // retrieve the submission text (as formatted text)
            boolean checkForFormattingErrors = true; // check formatting error whether the student is posting or saving
            String text = processFormattedTextFromBrowser(state, params.getCleanString(VIEW_SUBMISSION_TEXT),
                    checkForFormattingErrors);

            if (text == null) {
                text = (String) state.getAttribute(VIEW_SUBMISSION_TEXT);
            } else {
                state.setAttribute(VIEW_SUBMISSION_TEXT, text);
            }

            String honorPledgeYes = params.getString(VIEW_SUBMISSION_HONOR_PLEDGE_YES);
            /*if (honorPledgeYes == null)
            {
               honorPledgeYes = (String) state.getAttribute(VIEW_SUBMISSION_HONOR_PLEDGE_YES);
            }*/

            if (honorPledgeYes == null) {
                honorPledgeYes = "false";
            }

            User u = (User) state.getAttribute(STATE_USER);
            User submitter = null;
            String studentId = params.get("submit_on_behalf_of");
            if (studentId != null && !studentId.equals("-1")) {
                // SAK-23817: return to the Assignments List by Student
                state.setAttribute(FROM_VIEW, MODE_INSTRUCTOR_VIEW_STUDENTS_ASSIGNMENT);
                try {
                    submitter = u;
                    u = UserDirectoryService.getUser(studentId);
                } catch (UserNotDefinedException ex1) {
                    M_log.warn("Unable to find user with ID [" + studentId + "]");
                    submitter = null;
                }
            }

            String group_id = null;
            String original_group_id = null;

            if (a.isGroup()) {
                original_group_id = (params.getString("originalGroup") == null
                        || params.getString("originalGroup").trim().length() == 0) ? null
                                : params.getString("originalGroup");
                ;
                if (original_group_id != null) {
                    state.setAttribute(VIEW_SUBMISSION_ORIGINAL_GROUP, original_group_id);
                } else {
                    if (state.getAttribute(VIEW_SUBMISSION_ORIGINAL_GROUP) != null)
                        original_group_id = (String) state.getAttribute(VIEW_SUBMISSION_ORIGINAL_GROUP);
                    else
                        state.setAttribute(VIEW_SUBMISSION_ORIGINAL_GROUP, null);
                }

                String[] groupChoice = params.getStrings("selectedGroups");

                if (groupChoice != null && groupChoice.length != 0) {
                    if (groupChoice.length > 1) {
                        state.setAttribute(VIEW_SUBMISSION_GROUP, null);
                        addAlert(state, rb.getString("java.alert.youchoosegroup"));
                    } else {
                        group_id = groupChoice[0];
                        state.setAttribute(VIEW_SUBMISSION_GROUP, groupChoice[0]);
                    }
                } else {
                    // get the submitted group id
                    if (state.getAttribute(VIEW_SUBMISSION_GROUP) != null) {
                        group_id = (String) state.getAttribute(VIEW_SUBMISSION_GROUP);
                    } else {
                        state.setAttribute(VIEW_SUBMISSION_GROUP, null);
                        addAlert(state, rb.getString("java.alert.youchoosegroup"));
                    }
                }
            }

            String assignmentId = "";
            if (state.getAttribute(STATE_MESSAGE) == null) {
                assignmentId = a.getId();

                if (a.getContent().getHonorPledge() != 1) {
                    if (!Boolean.valueOf(honorPledgeYes).booleanValue()) {
                        addAlert(state, rb.getString("youarenot18"));
                    }
                    state.setAttribute(VIEW_SUBMISSION_HONOR_PLEDGE_YES, honorPledgeYes);
                }

                // SAK-26322
                List nonInlineAttachments = getNonInlineAttachments(state, a);
                int typeOfSubmission = a.getContent().getTypeOfSubmission();
                if (typeOfSubmission == Assignment.SINGLE_ATTACHMENT_SUBMISSION
                        && nonInlineAttachments.size() > 1) {
                    //Single uploaded file and there are multiple attachments
                    adjustAttachmentsToSingleUpload(data, state, a, nonInlineAttachments);
                }

                // clear text if submission type does not allow it
                if (typeOfSubmission == Assignment.SINGLE_ATTACHMENT_SUBMISSION
                        || typeOfSubmission == Assignment.ATTACHMENT_ONLY_ASSIGNMENT_SUBMISSION) {
                    text = null;
                }

                // get attachment input and generate alert message according to assignment submission type
                checkSubmissionTextAttachmentInput(data, state, a, text);
            }
            if ((state.getAttribute(STATE_MESSAGE) == null) && (a != null)) {
                AssignmentSubmission submission = null;
                if (a.isGroup()) {
                    submission = getSubmission(a.getReference(),
                            (original_group_id == null ? group_id : original_group_id), "post_save_submission",
                            state);
                } else {
                    submission = getSubmission(a.getReference(), u, "post_save_submission", state);
                }

                if (submission != null) {
                    // the submission already exists, change the text and honor pledge value, post it
                    AssignmentSubmissionEdit sEdit = editSubmission(submission.getReference(),
                            "post_save_submission", state);
                    if (sEdit != null) {
                        ResourcePropertiesEdit sPropertiesEdit = sEdit.getPropertiesEdit();

                        /**
                         * SAK-22150 We will need to know later if there was a previous submission time. DH
                         */
                        boolean isPreviousSubmissionTime = true;
                        if (sEdit.getTimeSubmitted() == null || "".equals(sEdit.getTimeSubmitted())
                                || !AssignmentService.hasBeenSubmitted(sEdit)) {
                            isPreviousSubmissionTime = false;
                        }

                        if (a.isGroup()) {
                            if (original_group_id != null && !original_group_id.equals(group_id)) {
                                // changing group id so we need to check if a submission has already been made for that group
                                AssignmentSubmission submissioncheck = getSubmission(a.getReference(), group_id,
                                        "post_save_submission", state);
                                if (submissioncheck != null) {
                                    addAlert(state, rb.getString("group.already.submitted"));
                                    M_log.warn(this + ":post_save_submission " + group_id
                                            + " has already submitted " + submissioncheck.getId() + "!");
                                }
                            }
                            sEdit.setSubmitterId(group_id);
                        }

                        sEdit.setSubmittedText(text);
                        sEdit.setHonorPledgeFlag(Boolean.valueOf(honorPledgeYes).booleanValue());
                        sEdit.setTimeSubmitted(TimeService.newTime());
                        sEdit.setSubmitted(post);
                        sEdit.setIsUserSubmission(true);

                        // decrease the allow_resubmit_number, if this submission has been submitted.
                        if (sEdit.getSubmitted() && isPreviousSubmissionTime && sPropertiesEdit
                                .getProperty(AssignmentSubmission.ALLOW_RESUBMIT_NUMBER) != null) {
                            int number = Integer.parseInt(
                                    sPropertiesEdit.getProperty(AssignmentSubmission.ALLOW_RESUBMIT_NUMBER));
                            // minus 1 from the submit number, if the number is not -1 (not unlimited)
                            if (number >= 1) {
                                sPropertiesEdit.addProperty(AssignmentSubmission.ALLOW_RESUBMIT_NUMBER,
                                        String.valueOf(number - 1));
                            }
                        }

                        // for resubmissions
                        // when resubmit, keep the Returned flag on till the instructor grade again.
                        Time now = TimeService.newTime();

                        // need this to handle feedback and comments, which we have to do even if ungraded
                        // get the previous graded date
                        String prevGradedDate = sEdit.getProperties()
                                .getProperty(AssignmentConstants.PROP_LAST_GRADED_DATE);
                        if (prevGradedDate == null) {
                            // since this is a newly added property, if no value is set, get the default as the submission last modified date
                            prevGradedDate = sEdit.getTimeLastModified().toStringLocalFull();
                            sEdit.getProperties().addProperty(AssignmentConstants.PROP_LAST_GRADED_DATE,
                                    prevGradedDate);
                        }

                        if (sEdit.getGraded() && sEdit.getReturned() && sEdit.getGradeReleased()) {

                            // add the current grade into previous grade histroy
                            String previousGrades = (String) sEdit.getProperties()
                                    .getProperty(ResourceProperties.PROP_SUBMISSION_SCALED_PREVIOUS_GRADES);
                            if (previousGrades == null) {
                                previousGrades = (String) sEdit.getProperties()
                                        .getProperty(ResourceProperties.PROP_SUBMISSION_PREVIOUS_GRADES);
                                if (previousGrades != null) {
                                    int typeOfGrade = a.getContent().getTypeOfGrade();
                                    if (typeOfGrade == 3) {
                                        // point grade assignment type
                                        // some old unscaled grades, need to scale the number and remove the old property
                                        String[] grades = StringUtils.split(previousGrades, " ");
                                        String newGrades = "";

                                        String decSeparator = FormattedText.getDecimalSeparator();

                                        for (int jj = 0; jj < grades.length; jj++) {
                                            String grade = grades[jj];
                                            if (grade.indexOf(decSeparator) == -1) {
                                                // show the grade with decimal point
                                                grade = grade.concat(decSeparator).concat("0");
                                            }
                                            newGrades = newGrades.concat(grade + " ");
                                        }
                                        previousGrades = newGrades;
                                    }
                                    sPropertiesEdit
                                            .removeProperty(ResourceProperties.PROP_SUBMISSION_PREVIOUS_GRADES);
                                } else {
                                    previousGrades = "";
                                }
                            }

                            if (StringUtils.trimToNull(sEdit.getGradeDisplay()) != null) {
                                previousGrades = "<h4>" + prevGradedDate + "</h4>"
                                        + "<div style=\"margin:0;padding:0\">" + sEdit.getGradeDisplay() + "</div>"
                                        + previousGrades;
                                sPropertiesEdit.addProperty(
                                        ResourceProperties.PROP_SUBMISSION_SCALED_PREVIOUS_GRADES, previousGrades);
                            }

                            // clear the current grade and make the submission ungraded
                            sEdit.setGraded(false);
                            sEdit.setGradedBy(null);
                            sEdit.setGrade("");
                            sEdit.setGradeReleased(false);

                        }

                        // following involves content, not grading, so always do on resubmit, not just if graded

                        // clean the ContentReview attributes
                        sEdit.setReviewIconUrl(null);
                        sEdit.setReviewScore(-2); // the default is -2 (e.g., for a new submission)
                        sEdit.setReviewStatus(null);

                        if (StringUtils.trimToNull(sEdit.getFeedbackFormattedText()) != null) {
                            // keep the history of assignment feed back text
                            String feedbackTextHistory = sPropertiesEdit
                                    .getProperty(ResourceProperties.PROP_SUBMISSION_PREVIOUS_FEEDBACK_TEXT) != null
                                            ? sPropertiesEdit.getProperty(
                                                    ResourceProperties.PROP_SUBMISSION_PREVIOUS_FEEDBACK_TEXT)
                                            : "";
                            feedbackTextHistory = "<h4>" + prevGradedDate + "</h4>"
                                    + "<div style=\"margin:0;padding:0\">" + sEdit.getFeedbackText() + "</div>"
                                    + feedbackTextHistory;
                            sPropertiesEdit.addProperty(ResourceProperties.PROP_SUBMISSION_PREVIOUS_FEEDBACK_TEXT,
                                    feedbackTextHistory);
                        }

                        if (StringUtils.trimToNull(sEdit.getFeedbackComment()) != null) {
                            // keep the history of assignment feed back comment
                            String feedbackCommentHistory = sPropertiesEdit.getProperty(
                                    ResourceProperties.PROP_SUBMISSION_PREVIOUS_FEEDBACK_COMMENT) != null
                                            ? sPropertiesEdit.getProperty(
                                                    ResourceProperties.PROP_SUBMISSION_PREVIOUS_FEEDBACK_COMMENT)
                                            : "";
                            feedbackCommentHistory = "<h4>" + prevGradedDate + "</h4>"
                                    + "<div style=\"margin:0;padding:0\">" + sEdit.getFeedbackComment() + "</div>"
                                    + feedbackCommentHistory;
                            sPropertiesEdit.addProperty(
                                    ResourceProperties.PROP_SUBMISSION_PREVIOUS_FEEDBACK_COMMENT,
                                    feedbackCommentHistory);
                        }

                        // keep the history of assignment feed back comment
                        String feedbackAttachmentHistory = sPropertiesEdit
                                .getProperty(PROP_SUBMISSION_PREVIOUS_FEEDBACK_ATTACHMENTS) != null
                                        ? sPropertiesEdit.getProperty(PROP_SUBMISSION_PREVIOUS_FEEDBACK_ATTACHMENTS)
                                        : "";
                        List feedbackAttachments = sEdit.getFeedbackAttachments();
                        StringBuffer attBuffer = new StringBuffer();
                        for (int k = 0; k < feedbackAttachments.size(); k++) {
                            // use comma as separator for attachments
                            attBuffer.append(((Reference) feedbackAttachments.get(k)).getReference() + ",");
                        }
                        feedbackAttachmentHistory = attBuffer.toString() + feedbackAttachmentHistory;

                        sPropertiesEdit.addProperty(PROP_SUBMISSION_PREVIOUS_FEEDBACK_ATTACHMENTS,
                                feedbackAttachmentHistory);

                        // reset the previous grading context
                        sEdit.setFeedbackText("");
                        sEdit.setFeedbackComment("");
                        sEdit.clearFeedbackAttachments();

                        sEdit.setAssignment(a);

                        // SAK-26322
                        if (a.getContent().getTypeOfSubmission() == 5) {
                            List nonInlineAttachments = getNonInlineAttachments(state, a);
                            if (nonInlineAttachments != null) {
                                //clear out inline attachments for content-review
                                //filter the attachments in the state to exclude inline attachments (nonInlineAttachments, is a subset of what's currently in the state)
                                state.setAttribute(ATTACHMENTS, nonInlineAttachments);
                            }
                        }

                        // add attachments
                        List attachments = (List) state.getAttribute(ATTACHMENTS);
                        if (attachments != null) {
                            if (a.getContent()
                                    .getTypeOfSubmission() == Assignment.TEXT_ONLY_ASSIGNMENT_SUBMISSION) {
                                //inline only doesn't accept attachments
                                sEdit.clearSubmittedAttachments();
                            } else {
                                //Post the attachments before clearing so that we don't sumbit duplicate attachments
                                //Check if we need to post the attachments
                                if (a.getContent().getAllowReviewService()) {
                                    if (!attachments.isEmpty()) {
                                        sEdit.postAttachment(attachments);
                                    }
                                }

                                // clear the old attachments first
                                sEdit.clearSubmittedAttachments();

                                // add each new attachment
                                if (submitter != null) {
                                    sPropertiesEdit.addProperty(AssignmentSubmission.SUBMITTER_USER_ID,
                                            submitter.getId());
                                    state.setAttribute(STATE_SUBMITTER, u.getId());
                                } else {
                                    sPropertiesEdit.removeProperty(AssignmentSubmission.SUBMITTER_USER_ID);
                                }

                                Iterator it = attachments.iterator();
                                while (it.hasNext()) {
                                    sEdit.addSubmittedAttachment((Reference) it.next());
                                }
                            }
                        }

                        // SAK-26322 - add inline as an attachment for the content review service
                        if (a.getContent().getAllowReviewService() && !isHtmlEmpty(text)) {
                            prepareInlineForContentReview(text, sEdit, state, u);
                        }

                        if (submitter != null) {
                            sPropertiesEdit.addProperty(AssignmentSubmission.SUBMITTER_USER_ID, submitter.getId());
                            state.setAttribute(STATE_SUBMITTER, u.getId());
                        } else {
                            sPropertiesEdit.removeProperty(AssignmentSubmission.SUBMITTER_USER_ID);
                        }

                        // SAK-17606
                        String logEntry = new java.util.Date().toString() + " ";
                        boolean anonymousGrading = Boolean.parseBoolean(
                                a.getProperties().getProperty(NEW_ASSIGNMENT_CHECK_ANONYMOUS_GRADING));
                        if (!anonymousGrading) {
                            String subOrDraft = post ? "submitted" : "saved draft";
                            if (submitter != null && !submitter.getEid().equals(u.getEid())) {
                                logEntry += submitter.getDisplayName() + " (" + submitter.getEid() + ") "
                                        + subOrDraft + " " + rb.getString("listsub.submitted.on.behalf") + " "
                                        + u.getDisplayName() + " (" + u.getEid() + ")";
                            } else {
                                logEntry += u.getDisplayName() + " (" + u.getEid() + ") " + subOrDraft;
                            }
                        }
                        sEdit.addSubmissionLogEntry(logEntry);
                        AssignmentService.commitEdit(sEdit);
                    }
                } else {
                    // new submission
                    try {
                        // if assignment is a group submission... send group id and not user id
                        M_log.debug(this + " NEW SUBMISSION IS GROUP: " + a.isGroup() + " GROUP:" + group_id);
                        AssignmentSubmissionEdit edit = a.isGroup()
                                ? AssignmentService.addSubmission(contextString, assignmentId, group_id)
                                : AssignmentService.addSubmission(contextString, assignmentId,
                                        SessionManager.getCurrentSessionUserId());
                        if (edit != null) {
                            edit.setSubmittedText(text);
                            edit.setHonorPledgeFlag(Boolean.valueOf(honorPledgeYes).booleanValue());
                            edit.setTimeSubmitted(TimeService.newTime());
                            edit.setSubmitted(post);
                            edit.setAssignment(a);
                            ResourcePropertiesEdit sPropertiesEdit = edit.getPropertiesEdit();

                            // add attachments
                            List attachments = (List) state.getAttribute(ATTACHMENTS);

                            // SAK-26322 - add inline as an attachment for the content review service
                            if (a.getContent().getAllowReviewService() && !isHtmlEmpty(text)) {
                                prepareInlineForContentReview(text, edit, state, u);
                            }

                            if (attachments != null) {
                                // add each attachment
                                if ((!attachments.isEmpty()) && a.getContent().getAllowReviewService())
                                    edit.postAttachment(attachments);

                                // add each attachment
                                Iterator it = attachments.iterator();
                                while (it.hasNext()) {
                                    edit.addSubmittedAttachment((Reference) it.next());
                                }
                            }

                            // set the resubmission properties
                            setResubmissionProperties(a, edit);
                            if (submitter != null) {
                                sPropertiesEdit.addProperty(AssignmentSubmission.SUBMITTER_USER_ID,
                                        submitter.getId());
                                state.setAttribute(STATE_SUBMITTER, u.getId());
                            } else {
                                sPropertiesEdit.removeProperty(AssignmentSubmission.SUBMITTER_USER_ID);
                            }

                            // SAK-17606
                            String logEntry = new java.util.Date().toString() + " ";
                            boolean anonymousGrading = Boolean.parseBoolean(
                                    a.getProperties().getProperty(NEW_ASSIGNMENT_CHECK_ANONYMOUS_GRADING));
                            if (!anonymousGrading) {
                                String subOrDraft = post ? "submitted" : "saved draft";
                                if (submitter != null && !submitter.getEid().equals(u.getEid())) {
                                    logEntry += submitter.getDisplayName() + " (" + submitter.getEid() + ") "
                                            + subOrDraft + " " + rb.getString("listsub.submitted.on.behalf") + " "
                                            + u.getDisplayName() + " (" + u.getEid() + ")";
                                } else {
                                    logEntry += u.getDisplayName() + " (" + u.getEid() + ") " + subOrDraft;
                                }
                            }
                            edit.addSubmissionLogEntry(logEntry);
                            AssignmentService.commitEdit(edit);
                        }
                    } catch (PermissionException e) {
                        addAlert(state, rb.getString("youarenot13"));
                        M_log.warn(this + ":post_save_submission " + e.getMessage());
                    }
                } // if-else

            } // if

            if (state.getAttribute(STATE_MESSAGE) == null) {
                state.setAttribute(STATE_MODE, MODE_STUDENT_VIEW_SUBMISSION_CONFIRMATION);
            }
            LearningResourceStoreService lrss = (LearningResourceStoreService) ComponentManager
                    .get("org.sakaiproject.event.api.LearningResourceStoreService");
            if (null != lrss) {
                Event event = m_eventTrackingService
                        .newEvent(AssignmentConstants.EVENT_SUBMIT_ASSIGNMENT_SUBMISSION, assignmentId, false);
                lrss.registerStatement(getStatementForSubmitAssignment(lrss.getEventActor(event), event,
                        ServerConfigurationService.getAccessUrl(), a.getTitle()), "sakai.assignment");
            }
        } // if

    } // post_save_submission

    /**
     * Takes the inline submission, prepares it as an attachment to the submission and queues the attachment with the content review service
     */
    private void prepareInlineForContentReview(String text, AssignmentSubmissionEdit edit, SessionState state,
            User student) {
        //We will be replacing the inline submission's attachment
        //firstly, disconnect any existing attachments with AssignmentSubmission.PROP_INLINE_SUBMISSION set
        List attachments = edit.getSubmittedAttachments();
        List toRemove = new ArrayList();
        Iterator itAttachments = attachments.iterator();
        while (itAttachments.hasNext()) {
            Reference attachment = (Reference) itAttachments.next();
            ResourceProperties attachProps = attachment.getProperties();
            if ("true".equals(attachProps.getProperty(AssignmentSubmission.PROP_INLINE_SUBMISSION))) {
                toRemove.add(attachment);
            }
        }
        Iterator itToRemove = toRemove.iterator();
        while (itToRemove.hasNext()) {
            Reference attachment = (Reference) itToRemove.next();
            edit.removeSubmittedAttachment(attachment);
        }

        //now prepare the new resource
        //provide lots of info for forensics - filename=InlineSub_assignmentId_userDisplayId_(for_studentDisplayId)_date.html
        User currentUser = UserDirectoryService.getCurrentUser();
        String currentDisplayName = currentUser.getDisplayId();
        String siteId = (String) state.getAttribute(STATE_CONTEXT_STRING);
        SimpleDateFormat dform = ((SimpleDateFormat) DateFormat.getDateInstance());
        //avoid semicolons in filenames, right?
        dform.applyPattern("yyyy-MM-dd_HH-mm-ss");
        StringBuilder sb_resourceId = new StringBuilder("InlineSub_");
        String u = "_";
        sb_resourceId.append(edit.getAssignmentId()).append(u).append(currentDisplayName).append(u);
        boolean isOnBehalfOfStudent = student != null && !student.equals(currentUser);
        if (isOnBehalfOfStudent) {
            // We're submitting on behalf of somebody
            sb_resourceId.append("for_").append(student.getDisplayId()).append(u);
        }
        sb_resourceId.append(dform.format(new Date()));

        String fileExtension = ".html";

        /* 
         * TODO: add and use a method in ContentHostingService to get the length of the ID of an attachment collection
         * Attachment collections currently look like this:
         * /attachment/dc126c4a-a48f-42a6-bda0-cf7b9c4c5c16/Assignments/eac7212a-9597-4b7d-b958-89e1c47cdfa7/
         * See BaseContentService.addAttachmentResource for more information
         */
        String toolName = "Assignments";
        // TODO: add and use a method in IdManager to get the maxUuidLength
        int maxUuidLength = 36;
        int esl = Entity.SEPARATOR.length();
        int attachmentCollectionLength = ContentHostingService.ATTACHMENTS_COLLECTION.length() + siteId.length()
                + esl + toolName.length() + esl + maxUuidLength + esl;
        int maxChars = ContentHostingService.MAXIMUM_RESOURCE_ID_LENGTH - attachmentCollectionLength
                - fileExtension.length() - 1;
        String resourceId = StringUtils.substring(sb_resourceId.toString(), 0, maxChars) + fileExtension;

        ResourcePropertiesEdit inlineProps = m_contentHostingService.newResourceProperties();
        inlineProps.addProperty(ResourceProperties.PROP_DISPLAY_NAME, rb.getString("submission.inline"));
        inlineProps.addProperty(ResourceProperties.PROP_DESCRIPTION, resourceId);
        inlineProps.addProperty(AssignmentSubmission.PROP_INLINE_SUBMISSION, "true");

        //create a byte array input stream
        //text is almost in html format, but it's missing the start and ending tags
        //(Is this always the case? Does the content review service care?)
        String toHtml = "<html><head></head><body>" + text + "</body></html>";
        InputStream contentStream = new ByteArrayInputStream(toHtml.getBytes());

        String contentType = "text/html";

        //duplicating code from doAttachUpload. TODO: Consider refactoring into a method

        SecurityAdvisor sa = new SecurityAdvisor() {
            public SecurityAdvice isAllowed(String userId, String function, String reference) {
                if (function.equals(m_contentHostingService.AUTH_RESOURCE_ADD)) {
                    return SecurityAdvice.ALLOWED;
                } else if (function.equals(m_contentHostingService.AUTH_RESOURCE_WRITE_ANY)) {
                    return SecurityAdvice.ALLOWED;
                } else {
                    return SecurityAdvice.PASS;
                }
            }
        };
        try {
            m_securityService.pushAdvisor(sa);
            ContentResource attachment = m_contentHostingService.addAttachmentResource(resourceId, siteId, toolName,
                    contentType, contentStream, inlineProps);
            // TODO: need to put this file in some kind of list to improve performance with web service impls of content-review service
            String contentUserId = isOnBehalfOfStudent ? student.getId() : currentUser.getId();
            contentReviewService.queueContent(contentUserId, siteId, edit.getAssignment().getReference(),
                    Arrays.asList(attachment));

            try {
                Reference ref = EntityManager
                        .newReference(m_contentHostingService.getReference(attachment.getId()));
                edit.addSubmittedAttachment(ref);
            } catch (Exception e) {
                M_log.warn(this + "prepareInlineForContentReview() cannot find reference for " + attachment.getId()
                        + e.getMessage());
            }
        } catch (PermissionException e) {
            addAlert(state, rb.getString("notpermis4"));
        } catch (RuntimeException e) {
            if (m_contentHostingService.ID_LENGTH_EXCEPTION.equals(e.getMessage())) {
                addAlert(state, rb.getFormattedMessage("alert.toolong", new String[] { resourceId }));
            }
        } catch (ServerOverloadException e) {
            M_log.debug(this + ".prepareInlineForContentReview() ***** DISK IO Exception ***** " + e.getMessage());
            addAlert(state, rb.getString("failed.diskio"));
        } catch (Exception ignore) {
            M_log.debug(
                    this + ".prepareInlineForContentReview() ***** Unknown Exception ***** " + ignore.getMessage());
            addAlert(state, rb.getString("failed"));
        } finally {
            m_securityService.popAdvisor(sa);
        }
    }

    /**
     * Used when students are selecting from a list of previous attachments for their single uploaded file
     */
    private void adjustAttachmentsToSingleUpload(RunData data, SessionState state, Assignment a,
            List nonInlineAttachments) {
        if (a == null || a.getContent() == null || a.getContent().getTypeOfSubmission() != 5) {
            throw new IllegalArgumentException(
                    "adjustAttachmentsToSingleUpload called, but the assignment type is not Single Uploaded File");
        }
        if (nonInlineAttachments == null) {
            throw new IllegalArgumentException(
                    "adjustAttachmentsToSingleUpload called, but nonInlineAttachments is null");
        }

        String selection = data.getParameters().get("attachmentSelection");
        if ("newAttachment".equals(selection)) {
            Reference attachment = (Reference) state.getAttribute("newSingleUploadedFile");
            if (attachment == null) {
                // Try the newSingleAttachmentList
                List l = (List) state.getAttribute("newSingleAttachmentList");
                if (l != null && !l.isEmpty()) {
                    attachment = (Reference) l.get(0);
                }
            }
            if (attachment != null) {
                List attachments = EntityManager.newReferenceList();
                attachments.add(attachment);
                state.setAttribute(ATTACHMENTS, attachments);
                state.removeAttribute("newSingleUploadedFile");
                state.removeAttribute("newSingleAttachmentList");
                state.removeAttribute(VIEW_SUBMISSION_TEXT);
            }
            // ^ if attachment is null, we don't care - checkSubmissionTextAttachmentInput() handles that for us
        } else {
            //they selected a previous attachment. selection represents an index in the nonInlineAttachments list
            boolean error = false;
            int index = -1;
            try {
                //get the selected attachment
                index = Integer.parseInt(selection);
                if (nonInlineAttachments.size() <= index) {
                    error = true;
                }
            } catch (NumberFormatException nfe) {
                error = true;
            }

            if (error) {
                M_log.warn(
                        "adjustAttachmentsToSingleUpload() - couldn't parse the selected index as an integer, or the selected index wasn't in the range of attachment indices");
                //checkSubmissionTextAttachmentInput() handles the alert message for us
            } else {
                Reference attachment = (Reference) nonInlineAttachments.get(index);
                //remove all the attachments from the state and add the selected one back for resubmission
                List attachments = (List) state.getAttribute(ATTACHMENTS);
                attachments.clear();
                attachments.add(attachment);
            }
        }
    }

    private void checkSubmissionTextAttachmentInput(RunData data, SessionState state, Assignment a, String text) {
        // SAK-26329 - determine if the submission has text
        boolean textIsEmpty = isHtmlEmpty(text);
        if (a != null) {
            // check the submission inputs based on the submission type
            int submissionType = a.getContent().getTypeOfSubmission();
            if (submissionType == Assignment.TEXT_ONLY_ASSIGNMENT_SUBMISSION) {
                // for the inline only submission
                if (textIsEmpty) {
                    addAlert(state, rb.getString("youmust7"));
                }
            } else if (submissionType == Assignment.ATTACHMENT_ONLY_ASSIGNMENT_SUBMISSION) {
                // for the attachment only submission
                List v = getNonInlineAttachments(state, a);
                if ((v == null) || (v.size() == 0)) {
                    addAlert(state, rb.getString("youmust1"));
                }
            } else if (submissionType == Assignment.SINGLE_ATTACHMENT_SUBMISSION) {
                // for the single uploaded file only submission
                List v = getNonInlineAttachments(state, a);
                if ((v == null) || (v.size() != 1)) {
                    addAlert(state, rb.getString("youmust8"));
                }
            } else {
                // for the inline and attachment submission / other submission types
                // There must be at least one thing submitted: inline text or at least one attachment
                List v = getNonInlineAttachments(state, a);
                if (textIsEmpty && (v == null || v.size() == 0)) {
                    addAlert(state, rb.getString("youmust2"));
                }
            }
        }
    }

    /**
     * When using content review, inline text gets turned into an attachment. This method returns all the attachments that do not represent inline text
     */
    private List getNonInlineAttachments(SessionState state, Assignment a) {
        List attachments = (List) state.getAttribute(ATTACHMENTS);
        List nonInlineAttachments = new ArrayList();
        nonInlineAttachments.addAll(attachments);
        if (a.getContent().getAllowReviewService()) {
            Iterator itAttachments = attachments.iterator();
            while (itAttachments.hasNext()) {
                Object next = itAttachments.next();
                if (next instanceof Reference) {
                    Reference attachment = (Reference) next;
                    if ("true".equals(
                            attachment.getProperties().getProperty(AssignmentSubmission.PROP_INLINE_SUBMISSION))) {
                        nonInlineAttachments.remove(attachment);
                    }
                }
            }
        }
        return nonInlineAttachments;
    }

    /**
     * SAK-26329 - Parses html and determines whether it contains printable characters. 
     */
    private boolean isHtmlEmpty(String html) {
        return html == null ? true : FormattedText.stripHtmlFromText(html, false, true).isEmpty();
    }

    /**
     * Action is to confirm the submission and return to list view
     */
    public void doConfirm_assignment_submission(RunData data) {
        if (!"POST".equals(data.getRequest().getMethod())) {
            return;
        }

        SessionState state = ((JetspeedRunData) data).getPortletSessionState(((JetspeedRunData) data).getJs_peid());
        // SAK-23817 if the instructor submitted on behalf of the student, go back to Assignment List by Student
        String fromView = (String) state.getAttribute(FROM_VIEW);
        if (MODE_INSTRUCTOR_VIEW_STUDENTS_ASSIGNMENT.equals(fromView)) {
            state.setAttribute(STATE_MODE, MODE_INSTRUCTOR_VIEW_STUDENTS_ASSIGNMENT);
        } else {
            state.setAttribute(STATE_MODE, MODE_LIST_ASSIGNMENTS);
        }
        state.setAttribute(ATTACHMENTS, EntityManager.newReferenceList());
    }

    /**
     * Action is to show the new assignment screen
     */
    public void doNew_assignment(RunData data, Context context) {

        SessionState state = ((JetspeedRunData) data).getPortletSessionState(((JetspeedRunData) data).getJs_peid());

        if (!alertGlobalNavigation(state, data)) {
            if (AssignmentService.allowAddAssignment((String) state.getAttribute(STATE_CONTEXT_STRING))) {
                initializeAssignment(state);

                state.setAttribute(ATTACHMENTS, EntityManager.newReferenceList());
                state.setAttribute(STATE_MODE, MODE_INSTRUCTOR_NEW_EDIT_ASSIGNMENT);
            } else {
                addAlert(state, rb.getString("youarenot_addAssignment"));
                state.setAttribute(STATE_MODE, MODE_LIST_ASSIGNMENTS);
            }

            // reset the global navigaion alert flag
            if (state.getAttribute(ALERT_GLOBAL_NAVIGATION) != null) {
                state.removeAttribute(ALERT_GLOBAL_NAVIGATION);
            }
        }

    } // doNew_Assignment

    /**
     * Action is to show the reorder assignment screen
     */
    public void doReorder(RunData data) {
        SessionState state = ((JetspeedRunData) data).getPortletSessionState(((JetspeedRunData) data).getJs_peid());

        // this insures the default order is loaded into the reordering tool
        state.setAttribute(SORTED_BY, SORTED_BY_DEFAULT);
        state.setAttribute(SORTED_ASC, Boolean.TRUE.toString());

        if (!alertGlobalNavigation(state, data)) {
            if (AssignmentService.allowAllGroups((String) state.getAttribute(STATE_CONTEXT_STRING))) {
                state.setAttribute(ATTACHMENTS, EntityManager.newReferenceList());
                state.setAttribute(STATE_MODE, MODE_INSTRUCTOR_REORDER_ASSIGNMENT);
            } else {
                addAlert(state, rb.getString("youarenot19"));
                state.setAttribute(STATE_MODE, MODE_LIST_ASSIGNMENTS);
            }

            // reset the global navigaion alert flag
            if (state.getAttribute(ALERT_GLOBAL_NAVIGATION) != null) {
                state.removeAttribute(ALERT_GLOBAL_NAVIGATION);
            }
        }

    } // doReorder

    /**
     * Action is to save the input infos for assignment fields
     *
     * @param validify
     *        Need to validify the inputs or not
     */
    protected void setNewAssignmentParameters(RunData data, boolean validify) {
        // read the form inputs
        SessionState state = ((JetspeedRunData) data).getPortletSessionState(((JetspeedRunData) data).getJs_peid());
        ParameterParser params = data.getParameters();

        String assignmentRef = params.getString("assignmentId");

        // put the input value into the state attributes
        String title = params.getString(NEW_ASSIGNMENT_TITLE);
        state.setAttribute(NEW_ASSIGNMENT_TITLE, title);

        String order = params.getString(NEW_ASSIGNMENT_ORDER);
        state.setAttribute(NEW_ASSIGNMENT_ORDER, order);

        String additionalOptions = params.getString(NEW_ASSIGNMENT_ADDITIONAL_OPTIONS);

        boolean groupAssignment = false;
        if ("group".equals(additionalOptions)) {
            state.setAttribute(NEW_ASSIGNMENT_GROUP_SUBMIT, "1");
            groupAssignment = true;
        } else {
            state.setAttribute(NEW_ASSIGNMENT_GROUP_SUBMIT, "0");
        }

        if (title == null || title.length() == 0) {
            // empty assignment title
            addAlert(state, rb.getString("plespethe1"));
        } else if (sameAssignmentTitleInContext(assignmentRef, title,
                (String) state.getAttribute(STATE_CONTEXT_STRING))) {
            // assignment title already exist
            addAlert(state, rb.getFormattedMessage("same_assignment_title", new Object[] { title }));
        }

        // open time
        Time openTime = putTimeInputInState(params, state, NEW_ASSIGNMENT_OPENMONTH, NEW_ASSIGNMENT_OPENDAY,
                NEW_ASSIGNMENT_OPENYEAR, NEW_ASSIGNMENT_OPENHOUR, NEW_ASSIGNMENT_OPENMIN, "newassig.opedat");

        // visible time
        if (Boolean.valueOf(ServerConfigurationService.getBoolean("assignment.visible.date.enabled", false))) {
            if (params.get("allowVisibleDateToggle") == null) {
                state.setAttribute(NEW_ASSIGNMENT_VISIBLETOGGLE, false);
            } else {
                Time visibleTime = putTimeInputInState(params, state, NEW_ASSIGNMENT_VISIBLEMONTH,
                        NEW_ASSIGNMENT_VISIBLEDAY, NEW_ASSIGNMENT_VISIBLEYEAR, NEW_ASSIGNMENT_VISIBLEHOUR,
                        NEW_ASSIGNMENT_VISIBLEMIN, "newassig.visdat");
                state.setAttribute(NEW_ASSIGNMENT_VISIBLETOGGLE, true);
            }

        }

        // due time
        Time dueTime = putTimeInputInState(params, state, NEW_ASSIGNMENT_DUEMONTH, NEW_ASSIGNMENT_DUEDAY,
                NEW_ASSIGNMENT_DUEYEAR, NEW_ASSIGNMENT_DUEHOUR, NEW_ASSIGNMENT_DUEMIN, "gen.duedat");
        // show alert message when due date is in past. Remove it after user confirms the choice.
        if (dueTime != null && dueTime.before(TimeService.newTime())
                && state.getAttribute(NEW_ASSIGNMENT_PAST_DUE_DATE) == null) {
            state.setAttribute(NEW_ASSIGNMENT_PAST_DUE_DATE, Boolean.TRUE);
        } else {
            // clean the attribute after user confirm
            state.removeAttribute(NEW_ASSIGNMENT_PAST_DUE_DATE);
        }
        if (state.getAttribute(NEW_ASSIGNMENT_PAST_DUE_DATE) != null && validify) {
            addAlert(state, rb.getString("assig4"));
        }

        if (openTime != null && dueTime != null && !dueTime.after(openTime)) {
            addAlert(state, rb.getString("assig3"));
        }

        state.setAttribute(NEW_ASSIGNMENT_ENABLECLOSEDATE, Boolean.valueOf(true));

        // close time
        Time closeTime = putTimeInputInState(params, state, NEW_ASSIGNMENT_CLOSEMONTH, NEW_ASSIGNMENT_CLOSEDAY,
                NEW_ASSIGNMENT_CLOSEYEAR, NEW_ASSIGNMENT_CLOSEHOUR, NEW_ASSIGNMENT_CLOSEMIN, "date.closedate");
        if (openTime != null && closeTime != null && !closeTime.after(openTime)) {
            addAlert(state, rb.getString("acesubdea3"));
        }
        if (dueTime != null && closeTime != null && closeTime.before(dueTime)) {
            addAlert(state, rb.getString("acesubdea2"));
        }

        // SECTION MOD
        String sections_string = "";
        String mode = (String) state.getAttribute(STATE_MODE);
        if (mode == null)
            mode = "";

        state.setAttribute(NEW_ASSIGNMENT_SECTION, sections_string);
        Integer submissionType = Integer.valueOf(params.getString(NEW_ASSIGNMENT_SUBMISSION_TYPE));
        state.setAttribute(NEW_ASSIGNMENT_SUBMISSION_TYPE, submissionType);

        // Skip category if it was never set.
        Long catInt = Long.valueOf(-1);
        if (params.getString(NEW_ASSIGNMENT_CATEGORY) != null)
            catInt = Long.valueOf(params.getString(NEW_ASSIGNMENT_CATEGORY));
        state.setAttribute(NEW_ASSIGNMENT_CATEGORY, catInt);

        int gradeType = -1;

        // grade type and grade points
        if (state.getAttribute(WITH_GRADES) != null && ((Boolean) state.getAttribute(WITH_GRADES)).booleanValue()) {
            gradeType = Integer.parseInt(params.getString(NEW_ASSIGNMENT_GRADE_TYPE));
            state.setAttribute(NEW_ASSIGNMENT_GRADE_TYPE, Integer.valueOf(gradeType));
        }

        //Peer Assessment
        boolean peerAssessment = false;
        if ("peerreview".equals(additionalOptions)) {
            state.setAttribute(NEW_ASSIGNMENT_USE_PEER_ASSESSMENT, Boolean.TRUE.toString());
            peerAssessment = true;
        } else {
            state.setAttribute(NEW_ASSIGNMENT_USE_PEER_ASSESSMENT, Boolean.FALSE.toString());
        }

        if (peerAssessment) {
            //not allowed for group assignments:
            if (groupAssignment) {
                addAlert(state, rb.getString("peerassessment.invliadGroupAssignment"));
            }
            //do not allow non-electronic assignments
            if (Assignment.NON_ELECTRONIC_ASSIGNMENT_SUBMISSION == submissionType) {
                addAlert(state, rb.getString("peerassessment.invliadSubmissionTypeAssignment"));
            }
            if (gradeType != Assignment.SCORE_GRADE_TYPE) {
                addAlert(state, rb.getString("peerassessment.invliadGradeTypeAssignment"));
            }

            Time peerPeriodTime = putTimeInputInState(params, state, NEW_ASSIGNMENT_PEERPERIODMONTH,
                    NEW_ASSIGNMENT_PEERPERIODDAY, NEW_ASSIGNMENT_PEERPERIODYEAR, NEW_ASSIGNMENT_PEERPERIODHOUR,
                    NEW_ASSIGNMENT_PEERPERIODMIN, "newassig.opedat");
            GregorianCalendar peerPeriodMinTimeCal = new GregorianCalendar();
            peerPeriodMinTimeCal.setTimeInMillis(closeTime.getTime());
            peerPeriodMinTimeCal.add(GregorianCalendar.MINUTE, 10);
            GregorianCalendar peerPeriodTimeCal = new GregorianCalendar();
            peerPeriodTimeCal.setTimeInMillis(peerPeriodTime.getTime());
            //peer assessment must complete at a minimum of 10 mins after close time
            if (peerPeriodTimeCal.before(peerPeriodMinTimeCal)) {
                addAlert(state, rb.getString("peerassessment.invliadPeriodTime"));
            }
        }

        String b, r;
        r = params.getString(NEW_ASSIGNMENT_PEER_ASSESSMENT_ANON_EVAL);
        if (r == null)
            b = Boolean.FALSE.toString();
        else
            b = Boolean.TRUE.toString();
        state.setAttribute(NEW_ASSIGNMENT_PEER_ASSESSMENT_ANON_EVAL, b);

        r = params.getString(NEW_ASSIGNMENT_PEER_ASSESSMENT_STUDENT_VIEW_REVIEWS);
        if (r == null)
            b = Boolean.FALSE.toString();
        else
            b = Boolean.TRUE.toString();
        state.setAttribute(NEW_ASSIGNMENT_PEER_ASSESSMENT_STUDENT_VIEW_REVIEWS, b);
        if (peerAssessment) {
            if (params.get(NEW_ASSIGNMENT_PEER_ASSESSMENT_NUM_REVIEWS) != null
                    && !"".equals(params.get(NEW_ASSIGNMENT_PEER_ASSESSMENT_NUM_REVIEWS))) {
                try {
                    int peerAssessmentNumOfReviews = Integer
                            .parseInt(params.getString(NEW_ASSIGNMENT_PEER_ASSESSMENT_NUM_REVIEWS));
                    if (peerAssessmentNumOfReviews > 0) {
                        state.setAttribute(NEW_ASSIGNMENT_PEER_ASSESSMENT_NUM_REVIEWS,
                                Integer.valueOf(peerAssessmentNumOfReviews));
                    } else {
                        addAlert(state, rb.getString("peerassessment.invalidNumReview"));
                    }
                } catch (Exception e) {
                    addAlert(state, rb.getString("peerassessment.invalidNumReview"));
                }
            } else {
                addAlert(state, rb.getString("peerassessment.specifyNumReview"));
            }
        }

        String peerAssessmentInstructions = processFormattedTextFromBrowser(state,
                params.getString(NEW_ASSIGNMENT_PEER_ASSESSMENT_INSTRUCTIONS), true);
        state.setAttribute(NEW_ASSIGNMENT_PEER_ASSESSMENT_INSTRUCTIONS, peerAssessmentInstructions);

        //REVIEW SERVICE
        r = params.getString(NEW_ASSIGNMENT_USE_REVIEW_SERVICE);
        // set whether we use the review service or not
        if (r == null)
            b = Boolean.FALSE.toString();
        else {
            b = Boolean.TRUE.toString();
            if (state.getAttribute(NEW_ASSIGNMENT_SUBMISSION_TYPE)
                    .equals(Assignment.NON_ELECTRONIC_ASSIGNMENT_SUBMISSION)) {
                //can't use content-review with non-electronic submissions
                addAlert(state,
                        rb.getFormattedMessage("review.switch.ne.1", contentReviewService.getServiceName()));
            }
        }
        state.setAttribute(NEW_ASSIGNMENT_USE_REVIEW_SERVICE, b);

        //set whether students can view the review service results
        r = params.getString(NEW_ASSIGNMENT_ALLOW_STUDENT_VIEW);
        if (r == null)
            b = Boolean.FALSE.toString();
        else
            b = Boolean.TRUE.toString();
        state.setAttribute(NEW_ASSIGNMENT_ALLOW_STUDENT_VIEW, b);

        //set submit options
        r = params.getString(NEW_ASSIGNMENT_REVIEW_SERVICE_SUBMIT_RADIO);
        if (r == null || (!NEW_ASSIGNMENT_REVIEW_SERVICE_SUBMIT_STANDARD.equals(r)
                && !NEW_ASSIGNMENT_REVIEW_SERVICE_SUBMIT_INSITUTION.equals(r)))
            r = NEW_ASSIGNMENT_REVIEW_SERVICE_SUBMIT_NONE;
        state.setAttribute(NEW_ASSIGNMENT_REVIEW_SERVICE_SUBMIT_RADIO, r);
        //set originality report options
        r = params.getString(NEW_ASSIGNMENT_REVIEW_SERVICE_REPORT_RADIO);
        if (r == null || !NEW_ASSIGNMENT_REVIEW_SERVICE_REPORT_DUE.equals(r))
            r = NEW_ASSIGNMENT_REVIEW_SERVICE_REPORT_IMMEDIATELY;
        state.setAttribute(NEW_ASSIGNMENT_REVIEW_SERVICE_REPORT_RADIO, r);
        //set check repository options:
        r = params.getString(NEW_ASSIGNMENT_REVIEW_SERVICE_CHECK_TURNITIN);
        if (r == null)
            b = Boolean.FALSE.toString();
        else
            b = Boolean.TRUE.toString();
        state.setAttribute(NEW_ASSIGNMENT_REVIEW_SERVICE_CHECK_TURNITIN, b);

        r = params.getString(NEW_ASSIGNMENT_REVIEW_SERVICE_CHECK_INTERNET);
        if (r == null)
            b = Boolean.FALSE.toString();
        else
            b = Boolean.TRUE.toString();
        state.setAttribute(NEW_ASSIGNMENT_REVIEW_SERVICE_CHECK_INTERNET, b);

        r = params.getString(NEW_ASSIGNMENT_REVIEW_SERVICE_CHECK_PUB);
        if (r == null)
            b = Boolean.FALSE.toString();
        else
            b = Boolean.TRUE.toString();
        state.setAttribute(NEW_ASSIGNMENT_REVIEW_SERVICE_CHECK_PUB, b);

        r = params.getString(NEW_ASSIGNMENT_REVIEW_SERVICE_CHECK_INSTITUTION);
        if (r == null)
            b = Boolean.FALSE.toString();
        else
            b = Boolean.TRUE.toString();
        state.setAttribute(NEW_ASSIGNMENT_REVIEW_SERVICE_CHECK_INSTITUTION, b);

        //exclude bibliographic materials:
        r = params.getString(NEW_ASSIGNMENT_REVIEW_SERVICE_EXCLUDE_BIBLIOGRAPHIC);
        if (r == null)
            b = Boolean.FALSE.toString();
        else
            b = Boolean.TRUE.toString();
        state.setAttribute(NEW_ASSIGNMENT_REVIEW_SERVICE_EXCLUDE_BIBLIOGRAPHIC, b);

        //exclude quoted materials:
        r = params.getString(NEW_ASSIGNMENT_REVIEW_SERVICE_EXCLUDE_QUOTED);
        if (r == null)
            b = Boolean.FALSE.toString();
        else
            b = Boolean.TRUE.toString();
        state.setAttribute(NEW_ASSIGNMENT_REVIEW_SERVICE_EXCLUDE_QUOTED, b);

        //exclude small matches
        r = params.getString(NEW_ASSIGNMENT_REVIEW_SERVICE_EXCLUDE_SMALL_MATCHES);
        if (r == null)
            b = Boolean.FALSE.toString();
        else
            b = Boolean.TRUE.toString();
        state.setAttribute(NEW_ASSIGNMENT_REVIEW_SERVICE_EXCLUDE_SMALL_MATCHES, b);

        //exclude type:
        //only options are 0=none, 1=words, 2=percentages
        r = params.getString(NEW_ASSIGNMENT_REVIEW_SERVICE_EXCLUDE_TYPE);
        if (!"0".equals(r) && !"1".equals(r) && !"2".equals(r)) {
            //this really shouldn't ever happen (unless someone's messing with the parameters)
            r = "0";
        }
        state.setAttribute(NEW_ASSIGNMENT_REVIEW_SERVICE_EXCLUDE_TYPE, r);

        //exclude value
        if (!"0".equals(r)) {
            r = params.getString(NEW_ASSIGNMENT_REVIEW_SERVICE_EXCLUDE_VALUE);
            try {
                int rInt = Integer.parseInt(r);
                if (rInt < 0 || rInt > 100) {
                    addAlert(state, rb.getString("review.exclude.matches.value_error"));
                }
            } catch (Exception e) {
                addAlert(state, rb.getString("review.exclude.matches.value_error"));
            }
            state.setAttribute(NEW_ASSIGNMENT_REVIEW_SERVICE_EXCLUDE_VALUE, r);
        } else {
            state.setAttribute(NEW_ASSIGNMENT_REVIEW_SERVICE_EXCLUDE_VALUE, "1");
        }

        // treat the new assignment description as formatted text
        boolean checkForFormattingErrors = true; // instructor is creating a new assignment - so check for errors
        String description = processFormattedTextFromBrowser(state,
                params.getCleanString(NEW_ASSIGNMENT_DESCRIPTION), checkForFormattingErrors);
        state.setAttribute(NEW_ASSIGNMENT_DESCRIPTION, description);

        if (state.getAttribute(CALENDAR) != null || state.getAttribute(ADDITIONAL_CALENDAR) != null) {
            // calendar enabled for the site
            if (params.getString(ResourceProperties.NEW_ASSIGNMENT_CHECK_ADD_DUE_DATE) != null
                    && params.getString(ResourceProperties.NEW_ASSIGNMENT_CHECK_ADD_DUE_DATE)
                            .equalsIgnoreCase(Boolean.TRUE.toString())) {
                state.setAttribute(ResourceProperties.NEW_ASSIGNMENT_CHECK_ADD_DUE_DATE, Boolean.TRUE.toString());
            } else {
                state.setAttribute(ResourceProperties.NEW_ASSIGNMENT_CHECK_ADD_DUE_DATE, Boolean.FALSE.toString());
            }
        } else {
            // no calendar yet for the site
            state.removeAttribute(ResourceProperties.NEW_ASSIGNMENT_CHECK_ADD_DUE_DATE);
        }

        if (params.getString(ResourceProperties.NEW_ASSIGNMENT_CHECK_AUTO_ANNOUNCE) != null
                && params.getString(ResourceProperties.NEW_ASSIGNMENT_CHECK_AUTO_ANNOUNCE)
                        .equalsIgnoreCase(Boolean.TRUE.toString())) {
            state.setAttribute(ResourceProperties.NEW_ASSIGNMENT_CHECK_AUTO_ANNOUNCE, Boolean.TRUE.toString());
        } else {
            state.setAttribute(ResourceProperties.NEW_ASSIGNMENT_CHECK_AUTO_ANNOUNCE, Boolean.FALSE.toString());
        }

        if (params.getString(Assignment.ASSIGNMENT_OPENDATE_NOTIFICATION) != null) {
            if (params.getString(Assignment.ASSIGNMENT_OPENDATE_NOTIFICATION)
                    .equalsIgnoreCase(Assignment.ASSIGNMENT_OPENDATE_NOTIFICATION_NONE)) {
                state.setAttribute(Assignment.ASSIGNMENT_OPENDATE_NOTIFICATION,
                        Assignment.ASSIGNMENT_OPENDATE_NOTIFICATION_NONE);
            } else if (params.getString(Assignment.ASSIGNMENT_OPENDATE_NOTIFICATION)
                    .equalsIgnoreCase(Assignment.ASSIGNMENT_OPENDATE_NOTIFICATION_LOW)) {
                state.setAttribute(Assignment.ASSIGNMENT_OPENDATE_NOTIFICATION,
                        Assignment.ASSIGNMENT_OPENDATE_NOTIFICATION_LOW);
            } else if (params.getString(Assignment.ASSIGNMENT_OPENDATE_NOTIFICATION)
                    .equalsIgnoreCase(Assignment.ASSIGNMENT_OPENDATE_NOTIFICATION_HIGH)) {
                state.setAttribute(Assignment.ASSIGNMENT_OPENDATE_NOTIFICATION,
                        Assignment.ASSIGNMENT_OPENDATE_NOTIFICATION_HIGH);
            }
        }

        if (params.getString(NEW_ASSIGNMENT_CHECK_HIDE_DUE_DATE) != null
                && params.getString(NEW_ASSIGNMENT_CHECK_HIDE_DUE_DATE).equalsIgnoreCase(Boolean.TRUE.toString())) {
            state.setAttribute(NEW_ASSIGNMENT_CHECK_HIDE_DUE_DATE, Boolean.TRUE.toString());
        } else {
            state.setAttribute(NEW_ASSIGNMENT_CHECK_HIDE_DUE_DATE, Boolean.FALSE.toString());
        }

        String s = params.getString(NEW_ASSIGNMENT_CHECK_ADD_HONOR_PLEDGE);

        // set the honor pledge to be "no honor pledge"
        if (s == null)
            s = "1";
        state.setAttribute(NEW_ASSIGNMENT_CHECK_ADD_HONOR_PLEDGE, s);

        String grading = params.getString(NEW_ASSIGNMENT_ADD_TO_GRADEBOOK);
        state.setAttribute(NEW_ASSIGNMENT_ADD_TO_GRADEBOOK, grading);

        // SAK-17606
        state.setAttribute(NEW_ASSIGNMENT_CHECK_ANONYMOUS_GRADING,
                params.getString(NEW_ASSIGNMENT_CHECK_ANONYMOUS_GRADING));

        // only when choose to associate with assignment in Gradebook
        String associateAssignment = params
                .getString(AssignmentService.PROP_ASSIGNMENT_ASSOCIATE_GRADEBOOK_ASSIGNMENT);

        if (grading != null) {
            if (grading.equals(AssignmentService.GRADEBOOK_INTEGRATION_ASSOCIATE)) {
                state.setAttribute(AssignmentService.PROP_ASSIGNMENT_ASSOCIATE_GRADEBOOK_ASSIGNMENT,
                        associateAssignment);
            } else {
                state.setAttribute(AssignmentService.PROP_ASSIGNMENT_ASSOCIATE_GRADEBOOK_ASSIGNMENT, "");
            }

            if (!grading.equals(AssignmentService.GRADEBOOK_INTEGRATION_NO)) {
                // gradebook integration only available to point-grade assignment
                if (gradeType != Assignment.SCORE_GRADE_TYPE) {
                    addAlert(state, rb.getString("addtogradebook.wrongGradeScale"));
                }

                // if chosen as "associate", have to choose one assignment from Gradebook
                if (grading.equals(AssignmentService.GRADEBOOK_INTEGRATION_ASSOCIATE)
                        && StringUtils.trimToNull(associateAssignment) == null) {
                    addAlert(state, rb.getString("grading.associate.alert"));
                }
            }
        }

        List attachments = (List) state.getAttribute(ATTACHMENTS);
        if (attachments == null || attachments.isEmpty()) {
            // read from vm file
            String[] attachmentIds = data.getParameters().getStrings("attachments");
            if (attachmentIds != null && attachmentIds.length != 0) {
                attachments = new ArrayList();
                for (int i = 0; i < attachmentIds.length; i++) {
                    attachments.add(EntityManager.newReference(attachmentIds[i]));
                }
            }
        }
        state.setAttribute(NEW_ASSIGNMENT_ATTACHMENT, attachments);

        if (validify) {
            if ((description == null) || (description.length() == 0)
                    || ("<br/>".equals(description)) && ((attachments == null || attachments.size() == 0))) {
                // if there is no description nor an attachment, show the following alert message.
                // One could ignore the message and still post the assignment
                if (state.getAttribute(NEW_ASSIGNMENT_DESCRIPTION_EMPTY) == null) {
                    state.setAttribute(NEW_ASSIGNMENT_DESCRIPTION_EMPTY, Boolean.TRUE.toString());
                } else {
                    state.removeAttribute(NEW_ASSIGNMENT_DESCRIPTION_EMPTY);
                }
            } else {
                state.removeAttribute(NEW_ASSIGNMENT_DESCRIPTION_EMPTY);
            }
        }

        if (validify && state.getAttribute(NEW_ASSIGNMENT_DESCRIPTION_EMPTY) != null) {
            addAlert(state, rb.getString("thiasshas"));
        }

        // assignment range?
        String range = data.getParameters().getString("range");
        state.setAttribute(NEW_ASSIGNMENT_RANGE, range);
        if ("groups".equals(range)) {
            String[] groupChoice = data.getParameters().getStrings("selectedGroups");
            if (groupChoice != null && groupChoice.length != 0) {
                state.setAttribute(NEW_ASSIGNMENT_GROUPS, new ArrayList(Arrays.asList(groupChoice)));
            } else {
                state.setAttribute(NEW_ASSIGNMENT_GROUPS, null);
                addAlert(state, rb.getString("java.alert.youchoosegroup"));
            }
        } else {
            state.removeAttribute(NEW_ASSIGNMENT_GROUPS);
        }

        // check groups for duplicate members here
        if (groupAssignment) {
            Collection<String> _dupUsers = usersInMultipleGroups(state, "groups".equals(range),
                    ("groups".equals(range) ? data.getParameters().getStrings("selectedGroups") : null), false,
                    null);
            if (_dupUsers.size() > 0) {
                StringBuilder _sb = new StringBuilder(rb.getString("group.user.multiple.warning") + " ");
                Iterator<String> _it = _dupUsers.iterator();
                if (_it.hasNext())
                    _sb.append(_it.next());
                while (_it.hasNext())
                    _sb.append(", " + _it.next());
                addAlert(state, _sb.toString());
                M_log.warn(this + ":post_save_assignment at least one user in multiple groups.");
            }
        }

        // allow resubmission numbers
        if (params.getString("allowResToggle") != null
                && params.getString(AssignmentSubmission.ALLOW_RESUBMIT_NUMBER) != null) {
            // read in allowResubmit params 
            Time resubmitCloseTime = readAllowResubmitParams(params, state, null);
            if (resubmitCloseTime != null) {
                // check the date is valid
                if (openTime != null && !resubmitCloseTime.after(openTime)) {
                    addAlert(state, rb.getString("acesubdea6"));
                }
            }
        } else if (!Integer.valueOf(Assignment.NON_ELECTRONIC_ASSIGNMENT_SUBMISSION)
                .equals(state.getAttribute(NEW_ASSIGNMENT_SUBMISSION_TYPE))) {
            /* 
             * SAK-26640: If the instructor switches to non-electronic by mistake, the resubmissions settings should persist so they can be easily retrieved.
             * So we only reset resubmit params for electronic assignments.
             */
            resetAllowResubmitParams(state);
        }

        // assignment notification option
        String notiOption = params.getString(ASSIGNMENT_INSTRUCTOR_NOTIFICATIONS);
        if (notiOption != null) {
            state.setAttribute(Assignment.ASSIGNMENT_INSTRUCTOR_NOTIFICATIONS_VALUE, notiOption);
        }

        // release grade notification option
        String releaseGradeOption = params.getString(ASSIGNMENT_RELEASEGRADE_NOTIFICATION);
        if (releaseGradeOption != null) {
            state.setAttribute(Assignment.ASSIGNMENT_RELEASEGRADE_NOTIFICATION_VALUE, releaseGradeOption);
        }
        // release resubmission notification option
        String releaseResubmissionOption = params.getString(ASSIGNMENT_RELEASERESUBMISSION_NOTIFICATION);
        if (releaseResubmissionOption != null) {
            state.setAttribute(Assignment.ASSIGNMENT_RELEASERESUBMISSION_NOTIFICATION_VALUE,
                    releaseResubmissionOption);
        }
        // read inputs for supplement items
        setNewAssignmentParametersSupplementItems(validify, state, params);

        if (state.getAttribute(WITH_GRADES) != null && ((Boolean) state.getAttribute(WITH_GRADES)).booleanValue()) {
            // the grade point
            String gradePoints = params.getString(NEW_ASSIGNMENT_GRADE_POINTS);
            state.setAttribute(NEW_ASSIGNMENT_GRADE_POINTS, gradePoints);
            if (gradePoints != null) {
                if (gradeType == 3) {
                    if ((gradePoints.length() == 0)) {
                        // in case of point grade assignment, user must specify maximum grade point
                        addAlert(state, rb.getString("plespethe3"));
                    } else {
                        Integer scaleFactor = AssignmentService.getScaleFactor();
                        try {
                            if (StringUtils.isNotEmpty(assignmentRef)) {
                                Assignment assignment = AssignmentService.getAssignment(assignmentRef);
                                if (assignment != null && assignment.getContent() != null) {
                                    scaleFactor = assignment.getContent().getFactor();
                                }
                            }
                        } catch (IdUnusedException | PermissionException e) {
                            M_log.error(e);
                        }

                        validPointGrade(state, gradePoints, scaleFactor);
                        // when scale is points, grade must be integer and less than maximum value
                        if (state.getAttribute(STATE_MESSAGE) == null) {
                            gradePoints = scalePointGrade(state, gradePoints, scaleFactor);
                        }
                        if (state.getAttribute(STATE_MESSAGE) == null) {
                            state.setAttribute(NEW_ASSIGNMENT_GRADE_POINTS, gradePoints);
                        }
                    }
                }
            }
        }

    } // setNewAssignmentParameters

    /**
     * check to see whether there is already an assignment with the same title in the site
     * @param assignmentRef
     * @param title
     * @param contextString
     * @return
     */
    private boolean sameAssignmentTitleInContext(String assignmentRef, String title, String contextString) {
        boolean rv = false;
        // in the student list view of assignments
        Iterator assignments = AssignmentService.getAssignmentsForContext(contextString);
        while (assignments.hasNext()) {
            Assignment a = (Assignment) assignments.next();
            if (assignmentRef == null || !assignmentRef.equals(a.getReference())) {
                // don't do self-compare
                String aTitle = a.getTitle();
                if (aTitle != null && aTitle.length() > 0 && title.equals(aTitle)) {
                    //further check whether the assignment is marked as deleted or not
                    String deleted = a.getProperties().getProperty(ResourceProperties.PROP_ASSIGNMENT_DELETED);
                    if (deleted == null || deleted != null && !Boolean.TRUE.toString().equalsIgnoreCase(deleted)) {
                        rv = true;
                    }
                }
            }
        }
        return rv;
    }

    /**
     * read inputs for supplement items
     * @param validify
     * @param state
     * @param params
     */
    private void setNewAssignmentParametersSupplementItems(boolean validify, SessionState state,
            ParameterParser params) {
        /********************* MODEL ANSWER ITEM *********************/
        String modelAnswer_to_delete = StringUtils.trimToNull(params.getString("modelanswer_to_delete"));
        if (modelAnswer_to_delete != null) {
            state.setAttribute(MODELANSWER_TO_DELETE, modelAnswer_to_delete);
        }
        String modelAnswer_text = StringUtils.trimToNull(params.getString("modelanswer_text"));
        if (modelAnswer_text != null) {
            state.setAttribute(MODELANSWER_TEXT, modelAnswer_text);
        }
        String modelAnswer_showto = StringUtils.trimToNull(params.getString("modelanswer_showto"));
        if (modelAnswer_showto != null) {
            state.setAttribute(MODELANSWER_SHOWTO, modelAnswer_showto);
        }
        if (modelAnswer_text != null || !"0".equals(modelAnswer_showto)
                || state.getAttribute(MODELANSWER_ATTACHMENTS) != null) {
            // there is Model Answer input
            state.setAttribute(MODELANSWER, Boolean.TRUE);

            if (validify && !"true".equalsIgnoreCase(modelAnswer_to_delete)) {
                // show alert when there is no model answer input
                if (modelAnswer_text == null) {
                    addAlert(state, rb.getString("modelAnswer.alert.modelAnswer"));
                }
                // show alert when user didn't select show-to option
                if ("0".equals(modelAnswer_showto)) {
                    addAlert(state, rb.getString("modelAnswer.alert.showto"));
                }
            }
        } else {
            state.removeAttribute(MODELANSWER);
        }

        /**************** NOTE ITEM ********************/
        String note_to_delete = StringUtils.trimToNull(params.getString("note_to_delete"));
        if (note_to_delete != null) {
            state.setAttribute(NOTE_TO_DELETE, note_to_delete);
        }
        String note_text = StringUtils.trimToNull(params.getString("note_text"));
        if (note_text != null) {
            state.setAttribute(NOTE_TEXT, note_text);
        }
        String note_to = StringUtils.trimToNull(params.getString("note_to"));
        if (note_to != null) {
            state.setAttribute(NOTE_SHAREWITH, note_to);
        }
        if (note_text != null || !"0".equals(note_to)) {
            // there is Note Item input
            state.setAttribute(NOTE, Boolean.TRUE);

            if (validify && !"true".equalsIgnoreCase(note_to_delete)) {
                // show alert when there is no note text
                if (note_text == null) {
                    addAlert(state, rb.getString("note.alert.text"));
                }
                // show alert when there is no share option
                if ("0".equals(note_to)) {
                    addAlert(state, rb.getString("note.alert.to"));
                }
            }
        } else {
            state.removeAttribute(NOTE);
        }

        /****************** ALL PURPOSE ITEM **********************/
        String allPurpose_to_delete = StringUtils.trimToNull(params.getString("allPurpose_to_delete"));
        if (allPurpose_to_delete != null) {
            state.setAttribute(ALLPURPOSE_TO_DELETE, allPurpose_to_delete);
        }
        String allPurposeTitle = StringUtils.trimToNull(params.getString("allPurposeTitle"));
        if (allPurposeTitle != null) {
            state.setAttribute(ALLPURPOSE_TITLE, allPurposeTitle);
        }
        String allPurposeText = StringUtils.trimToNull(params.getString("allPurposeText"));
        if (allPurposeText != null) {
            state.setAttribute(ALLPURPOSE_TEXT, allPurposeText);
        }
        if (StringUtils.trimToNull(params.getString("allPurposeHide")) != null) {
            state.setAttribute(ALLPURPOSE_HIDE, Boolean.valueOf(params.getString("allPurposeHide")));
        }
        if (StringUtils.trimToNull(params.getString("allPurposeShowFrom")) != null) {
            state.setAttribute(ALLPURPOSE_SHOW_FROM, Boolean.valueOf(params.getString("allPurposeShowFrom")));
            // allpurpose release time
            putTimeInputInState(params, state, ALLPURPOSE_RELEASE_MONTH, ALLPURPOSE_RELEASE_DAY,
                    ALLPURPOSE_RELEASE_YEAR, ALLPURPOSE_RELEASE_HOUR, ALLPURPOSE_RELEASE_MIN,
                    "date.allpurpose.releasedate");
        } else {
            state.removeAttribute(ALLPURPOSE_SHOW_FROM);
        }
        if (StringUtils.trimToNull(params.getString("allPurposeShowTo")) != null) {
            state.setAttribute(ALLPURPOSE_SHOW_TO, Boolean.valueOf(params.getString("allPurposeShowTo")));
            // allpurpose retract time
            putTimeInputInState(params, state, ALLPURPOSE_RETRACT_MONTH, ALLPURPOSE_RETRACT_DAY,
                    ALLPURPOSE_RETRACT_YEAR, ALLPURPOSE_RETRACT_HOUR, ALLPURPOSE_RETRACT_MIN,
                    "date.allpurpose.retractdate");
        } else {
            state.removeAttribute(ALLPURPOSE_SHOW_TO);
        }

        String siteId = (String) state.getAttribute(STATE_CONTEXT_STRING);
        List<String> accessList = new ArrayList<String>();
        try {
            AuthzGroup realm = authzGroupService.getAuthzGroup(SiteService.siteReference(siteId));
            Set<Role> roles = realm.getRoles();
            for (Iterator iRoles = roles.iterator(); iRoles.hasNext();) {
                // iterator through roles first
                Role role = (Role) iRoles.next();
                if (params.getString("allPurpose_" + role.getId()) != null) {
                    accessList.add(role.getId());
                } else {
                    // if the role is not selected, iterate through the users with this role
                    Set userIds = realm.getUsersHasRole(role.getId());
                    for (Iterator iUserIds = userIds.iterator(); iUserIds.hasNext();) {
                        String userId = (String) iUserIds.next();
                        if (params.getString("allPurpose_" + userId) != null) {
                            accessList.add(userId);
                        }
                    }
                }
            }
        } catch (Exception e) {
            M_log.warn(this + ":setNewAssignmentParameters" + e.toString() + "error finding authzGroup for = "
                    + siteId);
        }
        state.setAttribute(ALLPURPOSE_ACCESS, accessList);

        if (allPurposeTitle != null || allPurposeText != null || (accessList != null && !accessList.isEmpty())
                || state.getAttribute(ALLPURPOSE_ATTACHMENTS) != null) {
            // there is allpupose item input
            state.setAttribute(ALLPURPOSE, Boolean.TRUE);

            if (validify && !"true".equalsIgnoreCase(allPurpose_to_delete)) {
                if (allPurposeTitle == null) {
                    // missing title
                    addAlert(state, rb.getString("allPurpose.alert.title"));
                }
                if (allPurposeText == null) {
                    // missing text
                    addAlert(state, rb.getString("allPurpose.alert.text"));
                }
                if (accessList == null || accessList.isEmpty()) {
                    // missing access choice
                    addAlert(state, rb.getString("allPurpose.alert.access"));
                }
            }
        } else {
            state.removeAttribute(ALLPURPOSE);
        }
    }

    /**
     * read time input and assign it to state attributes
     * @param params
     * @param state
     * @param monthString
     * @param dayString
     * @param yearString
     * @param hourString
     * @param minString
     * @param invalidBundleMessage
     * @return
     */
    Time putTimeInputInState(ParameterParser params, SessionState state, String monthString, String dayString,
            String yearString, String hourString, String minString, String invalidBundleMessage) {
        int month = (Integer.valueOf(params.getString(monthString))).intValue();
        state.setAttribute(monthString, Integer.valueOf(month));
        int day = (Integer.valueOf(params.getString(dayString))).intValue();
        state.setAttribute(dayString, Integer.valueOf(day));
        int year = (Integer.valueOf(params.getString(yearString))).intValue();
        state.setAttribute(yearString, Integer.valueOf(year));
        int hour = (Integer.valueOf(params.getString(hourString))).intValue();
        state.setAttribute(hourString, Integer.valueOf(hour));
        int min = (Integer.valueOf(params.getString(minString))).intValue();
        state.setAttribute(minString, Integer.valueOf(min));
        // validate date
        if (!Validator.checkDate(day, month, year)) {
            addAlert(state,
                    rb.getFormattedMessage("date.invalid", new Object[] { rb.getString(invalidBundleMessage) }));
        }
        return TimeService.newTimeLocal(year, month, day, hour, min, 0, 0);
    }

    /**
     * Action is to hide the preview assignment student view
     */
    public void doHide_submission_assignment_instruction(RunData data) {
        SessionState state = ((JetspeedRunData) data).getPortletSessionState(((JetspeedRunData) data).getJs_peid());
        state.setAttribute(GRADE_SUBMISSION_ASSIGNMENT_EXPAND_FLAG, Boolean.valueOf(false));

        // save user input
        readGradeForm(data, state, "read");

    } // doHide_preview_assignment_student_view

    /**
     * Action is to hide the preview assignment student view
     */
    public void doHide_submission_assignment_instruction_review(RunData data) {
        if (!"POST".equals(data.getRequest().getMethod())) {
            return;
        }

        SessionState state = ((JetspeedRunData) data).getPortletSessionState(((JetspeedRunData) data).getJs_peid());
        state.setAttribute(GRADE_SUBMISSION_ASSIGNMENT_EXPAND_FLAG, Boolean.valueOf(false));

        // save user input
        saveReviewGradeForm(data, state, "read");

    }

    public void doShow_submission_assignment_instruction_review(RunData data) {
        if (!"POST".equals(data.getRequest().getMethod())) {
            return;
        }

        SessionState state = ((JetspeedRunData) data).getPortletSessionState(((JetspeedRunData) data).getJs_peid());
        state.setAttribute(GRADE_SUBMISSION_ASSIGNMENT_EXPAND_FLAG, Boolean.valueOf(true));

        // save user input
        saveReviewGradeForm(data, state, "read");
    }

    /**
     * Action is to show the preview assignment student view
     */
    public void doShow_submission_assignment_instruction(RunData data) {
        SessionState state = ((JetspeedRunData) data).getPortletSessionState(((JetspeedRunData) data).getJs_peid());
        state.setAttribute(GRADE_SUBMISSION_ASSIGNMENT_EXPAND_FLAG, Boolean.valueOf(true));

        // save user input
        readGradeForm(data, state, "read");

    } // doShow_submission_assignment_instruction

    /**
     * Action is to hide the preview assignment student view
     */
    public void doHide_preview_assignment_student_view(RunData data) {
        SessionState state = ((JetspeedRunData) data).getPortletSessionState(((JetspeedRunData) data).getJs_peid());
        state.setAttribute(PREVIEW_ASSIGNMENT_STUDENT_VIEW_HIDE_FLAG, Boolean.valueOf(true));

    } // doHide_preview_assignment_student_view

    /**
     * Action is to show the preview assignment student view
     */
    public void doShow_preview_assignment_student_view(RunData data) {
        SessionState state = ((JetspeedRunData) data).getPortletSessionState(((JetspeedRunData) data).getJs_peid());
        state.setAttribute(PREVIEW_ASSIGNMENT_STUDENT_VIEW_HIDE_FLAG, Boolean.valueOf(false));

    } // doShow_preview_assignment_student_view

    /**
     * Action is to hide the preview assignment assignment infos
     */
    public void doHide_preview_assignment_assignment(RunData data) {
        SessionState state = ((JetspeedRunData) data).getPortletSessionState(((JetspeedRunData) data).getJs_peid());
        state.setAttribute(PREVIEW_ASSIGNMENT_ASSIGNMENT_HIDE_FLAG, Boolean.valueOf(true));

    } // doHide_preview_assignment_assignment

    /**
     * Action is to show the preview assignment assignment info
     */
    public void doShow_preview_assignment_assignment(RunData data) {
        SessionState state = ((JetspeedRunData) data).getPortletSessionState(((JetspeedRunData) data).getJs_peid());
        state.setAttribute(PREVIEW_ASSIGNMENT_ASSIGNMENT_HIDE_FLAG, Boolean.valueOf(false));

    } // doShow_preview_assignment_assignment

    /**
     * Action is to hide the assignment content in the view assignment page
     */
    public void doHide_view_assignment(RunData data) {
        SessionState state = ((JetspeedRunData) data).getPortletSessionState(((JetspeedRunData) data).getJs_peid());
        state.setAttribute(VIEW_ASSIGNMENT_HIDE_ASSIGNMENT_FLAG, Boolean.valueOf(true));

    } // doHide_view_assignment

    /**
     * Action is to show the assignment content in the view assignment page
     */
    public void doShow_view_assignment(RunData data) {
        SessionState state = ((JetspeedRunData) data).getPortletSessionState(((JetspeedRunData) data).getJs_peid());
        state.setAttribute(VIEW_ASSIGNMENT_HIDE_ASSIGNMENT_FLAG, Boolean.valueOf(false));

    } // doShow_view_assignment

    /**
     * Action is to hide the student view in the view assignment page
     */
    public void doHide_view_student_view(RunData data) {
        SessionState state = ((JetspeedRunData) data).getPortletSessionState(((JetspeedRunData) data).getJs_peid());
        state.setAttribute(VIEW_ASSIGNMENT_HIDE_STUDENT_VIEW_FLAG, Boolean.valueOf(true));

    } // doHide_view_student_view

    /**
     * Action is to show the student view in the view assignment page
     */
    public void doShow_view_student_view(RunData data) {
        SessionState state = ((JetspeedRunData) data).getPortletSessionState(((JetspeedRunData) data).getJs_peid());
        state.setAttribute(VIEW_ASSIGNMENT_HIDE_STUDENT_VIEW_FLAG, Boolean.valueOf(false));

    } // doShow_view_student_view

    /**
     * Action is to post assignment
     */
    public void doPost_assignment(RunData data) {
        if (!"POST".equals(data.getRequest().getMethod())) {
            return;
        }

        // post assignment
        post_save_assignment(data, "post");

    } // doPost_assignment

    /**
     * Action is to tag items via an items tagging helper
     */
    public void doHelp_items(RunData data) {
        SessionState state = ((JetspeedRunData) data).getPortletSessionState(((JetspeedRunData) data).getJs_peid());
        ParameterParser params = data.getParameters();

        TaggingManager taggingManager = (TaggingManager) ComponentManager
                .get("org.sakaiproject.taggable.api.TaggingManager");
        TaggingProvider provider = taggingManager.findProviderById(params.getString(PROVIDER_ID));

        String activityRef = params.getString(ACTIVITY_REF);

        TaggingHelperInfo helperInfo = provider.getItemsHelperInfo(activityRef);

        // get into helper mode with this helper tool
        startHelper(data.getRequest(), helperInfo.getHelperId());

        Map<String, ? extends Object> helperParms = helperInfo.getParameterMap();

        for (Map.Entry<String, ? extends Object> entry : helperParms.entrySet()) {
            state.setAttribute(entry.getKey(), entry.getValue());
        }
    } // doHelp_items

    /**
     * Action is to tag an individual item via an item tagging helper
     */
    public void doHelp_item(RunData data) {
        SessionState state = ((JetspeedRunData) data).getPortletSessionState(((JetspeedRunData) data).getJs_peid());
        ParameterParser params = data.getParameters();

        TaggingManager taggingManager = (TaggingManager) ComponentManager
                .get("org.sakaiproject.taggable.api.TaggingManager");
        TaggingProvider provider = taggingManager.findProviderById(params.getString(PROVIDER_ID));

        String itemRef = params.getString(ITEM_REF);

        TaggingHelperInfo helperInfo = provider.getItemHelperInfo(itemRef);

        // get into helper mode with this helper tool
        startHelper(data.getRequest(), helperInfo.getHelperId());

        Map<String, ? extends Object> helperParms = helperInfo.getParameterMap();

        for (Map.Entry<String, ? extends Object> entry : helperParms.entrySet()) {
            state.setAttribute(entry.getKey(), entry.getValue());
        }
    } // doHelp_item

    /**
     * Action is to tag an activity via an activity tagging helper
     */
    public void doHelp_activity(RunData data) {
        SessionState state = ((JetspeedRunData) data).getPortletSessionState(((JetspeedRunData) data).getJs_peid());
        ParameterParser params = data.getParameters();

        TaggingManager taggingManager = (TaggingManager) ComponentManager
                .get("org.sakaiproject.taggable.api.TaggingManager");
        TaggingProvider provider = taggingManager.findProviderById(params.getString(PROVIDER_ID));

        String activityRef = params.getString(ACTIVITY_REF);

        TaggingHelperInfo helperInfo = provider.getActivityHelperInfo(activityRef);

        // get into helper mode with this helper tool
        startHelper(data.getRequest(), helperInfo.getHelperId());

        Map<String, ? extends Object> helperParms = helperInfo.getParameterMap();

        for (Map.Entry<String, ? extends Object> entry : helperParms.entrySet()) {
            state.setAttribute(entry.getKey(), entry.getValue());
        }
    } // doHelp_activity

    /**
     * post or save assignment
     */
    private void post_save_assignment(RunData data, String postOrSave) {
        SessionState state = ((JetspeedRunData) data).getPortletSessionState(((JetspeedRunData) data).getJs_peid());

        ParameterParser params = data.getParameters();

        String siteId = (String) state.getAttribute(STATE_CONTEXT_STRING);

        boolean post = (postOrSave != null) && "post".equals(postOrSave);

        // assignment old title
        String aOldTitle = null;

        // assignment old access setting
        String aOldAccessString = null;

        // assignment old group setting
        Collection aOldGroups = null;

        // assignment old open date setting
        Time oldOpenTime = null;

        // assignment old due date setting
        Time oldDueTime = null;

        // assignment old visible date setting
        Time oldVisibleTime = null;

        // assignment old close date setting
        Time oldCloseTime = null;

        // assignment old associated Gradebook entry if any
        String oAssociateGradebookAssignment = null;

        String mode = (String) state.getAttribute(STATE_MODE);
        if (!MODE_INSTRUCTOR_PREVIEW_ASSIGNMENT.equals(mode)) {
            // read input data if the mode is not preview mode
            setNewAssignmentParameters(data, true);
        }

        String assignmentId = params.getString("assignmentId");
        String assignmentContentId = params.getString("assignmentContentId");

        // whether this is an editing which changes non-point graded assignment to point graded assignment?
        boolean bool_change_from_non_point = false;
        // whether there is a change in the assignment resubmission choice
        boolean bool_change_resubmit_option = false;

        if (state.getAttribute(STATE_MESSAGE) == null) {
            // AssignmentContent object
            AssignmentContentEdit ac = editAssignmentContent(assignmentContentId, "post_save_assignment", state,
                    true);
            bool_change_from_non_point = change_from_non_point(state, assignmentId, assignmentContentId, ac);

            // Assignment
            AssignmentEdit a = editAssignment(assignmentId, "post_save_assignment", state, true);
            bool_change_resubmit_option = change_resubmit_option(state, a);

            // put the names and values into vm file
            String title = (String) state.getAttribute(NEW_ASSIGNMENT_TITLE);
            String order = (String) state.getAttribute(NEW_ASSIGNMENT_ORDER);

            // open time
            Time openTime = getTimeFromState(state, NEW_ASSIGNMENT_OPENMONTH, NEW_ASSIGNMENT_OPENDAY,
                    NEW_ASSIGNMENT_OPENYEAR, NEW_ASSIGNMENT_OPENHOUR, NEW_ASSIGNMENT_OPENMIN);

            // visible time
            Time visibleTime = null;
            if (Boolean.valueOf(ServerConfigurationService.getBoolean("assignment.visible.date.enabled", false))) {
                if (((Boolean) state.getAttribute(NEW_ASSIGNMENT_VISIBLETOGGLE)))
                    visibleTime = getTimeFromState(state, NEW_ASSIGNMENT_VISIBLEMONTH, NEW_ASSIGNMENT_VISIBLEDAY,
                            NEW_ASSIGNMENT_VISIBLEYEAR, NEW_ASSIGNMENT_VISIBLEHOUR, NEW_ASSIGNMENT_VISIBLEMIN);
            }

            // due time
            Time dueTime = getTimeFromState(state, NEW_ASSIGNMENT_DUEMONTH, NEW_ASSIGNMENT_DUEDAY,
                    NEW_ASSIGNMENT_DUEYEAR, NEW_ASSIGNMENT_DUEHOUR, NEW_ASSIGNMENT_DUEMIN);

            // close time
            Time closeTime = dueTime;
            boolean enableCloseDate = ((Boolean) state.getAttribute(NEW_ASSIGNMENT_ENABLECLOSEDATE)).booleanValue();
            if (enableCloseDate) {
                closeTime = getTimeFromState(state, NEW_ASSIGNMENT_CLOSEMONTH, NEW_ASSIGNMENT_CLOSEDAY,
                        NEW_ASSIGNMENT_CLOSEYEAR, NEW_ASSIGNMENT_CLOSEHOUR, NEW_ASSIGNMENT_CLOSEMIN);
            }

            // sections
            String section = (String) state.getAttribute(NEW_ASSIGNMENT_SECTION);

            int submissionType = ((Integer) state.getAttribute(NEW_ASSIGNMENT_SUBMISSION_TYPE)).intValue();

            int gradeType = ((Integer) state.getAttribute(NEW_ASSIGNMENT_GRADE_TYPE)).intValue();

            boolean isGroupSubmit = "1".equals((String) state.getAttribute(NEW_ASSIGNMENT_GROUP_SUBMIT));

            String gradePoints = (String) state.getAttribute(NEW_ASSIGNMENT_GRADE_POINTS);

            String description = (String) state.getAttribute(NEW_ASSIGNMENT_DESCRIPTION);

            String checkAddDueTime = state
                    .getAttribute(ResourceProperties.NEW_ASSIGNMENT_CHECK_ADD_DUE_DATE) != null
                            ? (String) state.getAttribute(ResourceProperties.NEW_ASSIGNMENT_CHECK_ADD_DUE_DATE)
                            : null;
            boolean hideDueDate = "true".equals((String) state.getAttribute(NEW_ASSIGNMENT_CHECK_HIDE_DUE_DATE));

            String checkAutoAnnounce = (String) state
                    .getAttribute(ResourceProperties.NEW_ASSIGNMENT_CHECK_AUTO_ANNOUNCE);

            String valueOpenDateNotification = (String) state
                    .getAttribute(Assignment.ASSIGNMENT_OPENDATE_NOTIFICATION);

            String checkAddHonorPledge = (String) state.getAttribute(NEW_ASSIGNMENT_CHECK_ADD_HONOR_PLEDGE);

            String addtoGradebook = state.getAttribute(NEW_ASSIGNMENT_ADD_TO_GRADEBOOK) != null
                    ? (String) state.getAttribute(NEW_ASSIGNMENT_ADD_TO_GRADEBOOK)
                    : "";

            long category = state.getAttribute(NEW_ASSIGNMENT_CATEGORY) != null
                    ? ((Long) state.getAttribute(NEW_ASSIGNMENT_CATEGORY)).longValue()
                    : -1;

            String associateGradebookAssignment = (String) state
                    .getAttribute(AssignmentService.PROP_ASSIGNMENT_ASSOCIATE_GRADEBOOK_ASSIGNMENT);

            String allowResubmitNumber = state.getAttribute(AssignmentSubmission.ALLOW_RESUBMIT_NUMBER) != null
                    ? (String) state.getAttribute(AssignmentSubmission.ALLOW_RESUBMIT_NUMBER)
                    : null;

            // SAK-17606
            String checkAnonymousGrading = state.getAttribute(NEW_ASSIGNMENT_CHECK_ANONYMOUS_GRADING) != null
                    ? (String) state.getAttribute(NEW_ASSIGNMENT_CHECK_ANONYMOUS_GRADING)
                    : "";

            // SAK-26319 - we no longer clear the resubmit number for non electronic submissions; the instructor may switch to another submission type in the future

            //Peer Assessment
            boolean usePeerAssessment = "true"
                    .equalsIgnoreCase((String) state.getAttribute(NEW_ASSIGNMENT_USE_PEER_ASSESSMENT));
            Time peerPeriodTime = getTimeFromState(state, NEW_ASSIGNMENT_PEERPERIODMONTH,
                    NEW_ASSIGNMENT_PEERPERIODDAY, NEW_ASSIGNMENT_PEERPERIODYEAR, NEW_ASSIGNMENT_PEERPERIODHOUR,
                    NEW_ASSIGNMENT_PEERPERIODMIN);
            boolean peerAssessmentAnonEval = "true"
                    .equalsIgnoreCase((String) state.getAttribute(NEW_ASSIGNMENT_PEER_ASSESSMENT_ANON_EVAL));
            boolean peerAssessmentStudentViewReviews = "true".equalsIgnoreCase(
                    (String) state.getAttribute(NEW_ASSIGNMENT_PEER_ASSESSMENT_STUDENT_VIEW_REVIEWS));
            int peerAssessmentNumReviews = 0;
            if (state.getAttribute(NEW_ASSIGNMENT_PEER_ASSESSMENT_NUM_REVIEWS) != null) {
                peerAssessmentNumReviews = ((Integer) state
                        .getAttribute(NEW_ASSIGNMENT_PEER_ASSESSMENT_NUM_REVIEWS)).intValue();
            }
            String peerAssessmentInstructions = (String) state
                    .getAttribute(NEW_ASSIGNMENT_PEER_ASSESSMENT_INSTRUCTIONS);

            //Review Service
            boolean useReviewService = "true"
                    .equalsIgnoreCase((String) state.getAttribute(NEW_ASSIGNMENT_USE_REVIEW_SERVICE));

            boolean allowStudentViewReport = "true"
                    .equalsIgnoreCase((String) state.getAttribute(NEW_ASSIGNMENT_ALLOW_STUDENT_VIEW));

            // If the assignment switched to non-electronic, we need to use some of the assignment's previous content-review settings.
            // This way, students will maintain access to their originality reports when appropriate.
            if (submissionType == Assignment.NON_ELECTRONIC_ASSIGNMENT_SUBMISSION) {
                useReviewService = ac.getAllowReviewService();
                allowStudentViewReport = ac.getAllowStudentViewReport();
            }

            String submitReviewRepo = (String) state.getAttribute(NEW_ASSIGNMENT_REVIEW_SERVICE_SUBMIT_RADIO);
            String generateOriginalityReport = (String) state
                    .getAttribute(NEW_ASSIGNMENT_REVIEW_SERVICE_REPORT_RADIO);
            boolean checkTurnitin = "true"
                    .equalsIgnoreCase((String) state.getAttribute(NEW_ASSIGNMENT_REVIEW_SERVICE_CHECK_TURNITIN));
            boolean checkInternet = "true"
                    .equalsIgnoreCase((String) state.getAttribute(NEW_ASSIGNMENT_REVIEW_SERVICE_CHECK_INTERNET));
            boolean checkPublications = "true"
                    .equalsIgnoreCase((String) state.getAttribute(NEW_ASSIGNMENT_REVIEW_SERVICE_CHECK_PUB));
            boolean checkInstitution = "true"
                    .equalsIgnoreCase((String) state.getAttribute(NEW_ASSIGNMENT_REVIEW_SERVICE_CHECK_INSTITUTION));
            //exclude bibliographic materials
            boolean excludeBibliographic = "true".equalsIgnoreCase(
                    (String) state.getAttribute(NEW_ASSIGNMENT_REVIEW_SERVICE_EXCLUDE_BIBLIOGRAPHIC));
            //exclude quoted materials
            boolean excludeQuoted = "true"
                    .equalsIgnoreCase((String) state.getAttribute(NEW_ASSIGNMENT_REVIEW_SERVICE_EXCLUDE_QUOTED));
            //exclude small matches
            boolean excludeSmallMatches = "true".equalsIgnoreCase(
                    (String) state.getAttribute(NEW_ASSIGNMENT_REVIEW_SERVICE_EXCLUDE_SMALL_MATCHES));
            //exclude type 0=none, 1=words, 2=percentages
            int excludeType = 0;
            int excludeValue = 1;
            if (excludeSmallMatches) {
                try {
                    excludeType = Integer
                            .parseInt((String) state.getAttribute(NEW_ASSIGNMENT_REVIEW_SERVICE_EXCLUDE_TYPE));
                    if (excludeType != 0 && excludeType != 1 && excludeType != 2) {
                        excludeType = 0;
                    }
                } catch (Exception e) {
                    //Numberformatexception
                }
                //exclude value
                try {
                    excludeValue = Integer
                            .parseInt((String) state.getAttribute(NEW_ASSIGNMENT_REVIEW_SERVICE_EXCLUDE_VALUE));
                    if (excludeValue < 0 || excludeValue > 100) {
                        excludeValue = 1;
                    }
                } catch (Exception e) {
                    //Numberformatexception
                }
            }

            // the attachments
            List attachments = (List) state.getAttribute(NEW_ASSIGNMENT_ATTACHMENT);

            // set group property
            String range = (String) state.getAttribute(NEW_ASSIGNMENT_RANGE);

            Collection groups = new ArrayList();
            try {
                Site site = SiteService.getSite(siteId);
                Collection groupChoice = (Collection) state.getAttribute(NEW_ASSIGNMENT_GROUPS);
                if (Assignment.AssignmentAccess.GROUPED.toString().equals(range)
                        && (groupChoice == null || groupChoice.size() == 0)) {
                    // show alert if no group is selected for the group access assignment
                    addAlert(state, rb.getString("java.alert.youchoosegroup"));
                } else if (groupChoice != null) {
                    for (Iterator iGroups = groupChoice.iterator(); iGroups.hasNext();) {
                        String groupId = (String) iGroups.next();
                        Group _aGroup = site.getGroup(groupId);
                        if (_aGroup != null)
                            groups.add(_aGroup);
                    }
                }
            } catch (Exception e) {
                M_log.warn(this + ":post_save_assignment " + e.getMessage());
            }

            if ((state.getAttribute(STATE_MESSAGE) == null) && (ac != null) && (a != null)) {
                aOldTitle = a.getTitle();

                aOldAccessString = a.getAccess().toString();

                aOldGroups = a.getGroups();

                // old open time
                oldOpenTime = a.getOpenTime();
                // old due time
                oldDueTime = a.getDueTime();
                // old visible time
                oldVisibleTime = a.getVisibleTime();
                // old close time
                oldCloseTime = a.getCloseTime();

                //assume creating the assignment with the content review service will be successful
                state.setAttribute("contentReviewSuccess", Boolean.TRUE);

                // commit the changes to AssignmentContent object
                commitAssignmentContentEdit(state, ac, a.getReference(), title, submissionType, useReviewService,
                        allowStudentViewReport, gradeType, gradePoints, description, checkAddHonorPledge,
                        attachments, submitReviewRepo, generateOriginalityReport, checkTurnitin, checkInternet,
                        checkPublications, checkInstitution, excludeBibliographic, excludeQuoted, excludeType,
                        excludeValue, openTime, dueTime, closeTime, hideDueDate);

                // set the Assignment Properties object
                ResourcePropertiesEdit aPropertiesEdit = a.getPropertiesEdit();
                oAssociateGradebookAssignment = aPropertiesEdit
                        .getProperty(AssignmentService.PROP_ASSIGNMENT_ASSOCIATE_GRADEBOOK_ASSIGNMENT);
                Time resubmitCloseTime = getTimeFromState(state, ALLOW_RESUBMIT_CLOSEMONTH, ALLOW_RESUBMIT_CLOSEDAY,
                        ALLOW_RESUBMIT_CLOSEYEAR, ALLOW_RESUBMIT_CLOSEHOUR, ALLOW_RESUBMIT_CLOSEMIN);

                // SAK-17606
                editAssignmentProperties(a, checkAddDueTime, checkAutoAnnounce, addtoGradebook,
                        associateGradebookAssignment, allowResubmitNumber, aPropertiesEdit, post, resubmitCloseTime,
                        checkAnonymousGrading);

                //TODO: ADD_DUE_DATE
                // the notification option
                if (state.getAttribute(Assignment.ASSIGNMENT_INSTRUCTOR_NOTIFICATIONS_VALUE) != null) {
                    aPropertiesEdit.addProperty(Assignment.ASSIGNMENT_INSTRUCTOR_NOTIFICATIONS_VALUE,
                            (String) state.getAttribute(Assignment.ASSIGNMENT_INSTRUCTOR_NOTIFICATIONS_VALUE));
                }

                // the release grade notification option
                if (state.getAttribute(Assignment.ASSIGNMENT_RELEASEGRADE_NOTIFICATION_VALUE) != null) {
                    aPropertiesEdit.addProperty(Assignment.ASSIGNMENT_RELEASEGRADE_NOTIFICATION_VALUE,
                            (String) state.getAttribute(Assignment.ASSIGNMENT_RELEASEGRADE_NOTIFICATION_VALUE));
                }

                if (state.getAttribute(Assignment.ASSIGNMENT_RELEASERESUBMISSION_NOTIFICATION_VALUE) != null) {
                    aPropertiesEdit.addProperty(Assignment.ASSIGNMENT_RELEASERESUBMISSION_NOTIFICATION_VALUE,
                            (String) state
                                    .getAttribute(Assignment.ASSIGNMENT_RELEASERESUBMISSION_NOTIFICATION_VALUE));
                }

                // comment the changes to Assignment object
                commitAssignmentEdit(state, post, ac, a, title, visibleTime, openTime, dueTime, closeTime,
                        enableCloseDate, section, range, groups, isGroupSubmit, usePeerAssessment, peerPeriodTime,
                        peerAssessmentAnonEval, peerAssessmentStudentViewReviews, peerAssessmentNumReviews,
                        peerAssessmentInstructions);

                if (post) {
                    // we need to update the submission
                    if (bool_change_from_non_point || bool_change_resubmit_option) {
                        List submissions = AssignmentService.getSubmissions(a);
                        if (submissions != null && submissions.size() > 0) {
                            // assignment already exist and with submissions
                            for (Iterator iSubmissions = submissions.iterator(); iSubmissions.hasNext();) {
                                AssignmentSubmission s = (AssignmentSubmission) iSubmissions.next();
                                AssignmentSubmissionEdit sEdit = editSubmission(s.getReference(),
                                        "post_save_assignment", state);
                                if (sEdit != null) {
                                    ResourcePropertiesEdit sPropertiesEdit = sEdit.getPropertiesEdit();
                                    if (bool_change_from_non_point) {
                                        // set the grade to be empty for now
                                        sEdit.setGrade("");
                                        sEdit.setGraded(false);
                                        sEdit.setGradedBy(null);
                                        sEdit.setGradeReleased(false);
                                        sEdit.setReturned(false);
                                    }
                                    if (bool_change_resubmit_option) {
                                        String aAllowResubmitNumber = a.getProperties()
                                                .getProperty(AssignmentSubmission.ALLOW_RESUBMIT_NUMBER);
                                        if (aAllowResubmitNumber == null || aAllowResubmitNumber.length() == 0
                                                || "0".equals(aAllowResubmitNumber)) {
                                            sPropertiesEdit
                                                    .removeProperty(AssignmentSubmission.ALLOW_RESUBMIT_NUMBER);
                                            sPropertiesEdit
                                                    .removeProperty(AssignmentSubmission.ALLOW_RESUBMIT_CLOSETIME);
                                        } else {
                                            sPropertiesEdit.addProperty(AssignmentSubmission.ALLOW_RESUBMIT_NUMBER,
                                                    a.getProperties().getProperty(
                                                            AssignmentSubmission.ALLOW_RESUBMIT_NUMBER));
                                            sPropertiesEdit.addProperty(
                                                    AssignmentSubmission.ALLOW_RESUBMIT_CLOSETIME,
                                                    a.getProperties().getProperty(
                                                            AssignmentSubmission.ALLOW_RESUBMIT_CLOSETIME));
                                        }
                                    }
                                    AssignmentService.commitEdit(sEdit);
                                }
                            }
                        }

                    }

                } //if

                // save supplement item information
                saveAssignmentSupplementItem(state, params, siteId, a);

                // set default sorting
                setDefaultSort(state);

                if (state.getAttribute(STATE_MESSAGE) == null) {
                    // set the state navigation variables
                    state.setAttribute(STATE_MODE, MODE_LIST_ASSIGNMENTS);
                    state.setAttribute(ATTACHMENTS, EntityManager.newReferenceList());
                    resetAssignment(state);

                    // integrate with other tools only if the assignment is posted
                    if (post) {
                        // add the due date to schedule if the schedule exists
                        integrateWithCalendar(state, a, title, dueTime, checkAddDueTime, oldDueTime,
                                aPropertiesEdit);

                        // the open date been announced
                        integrateWithAnnouncement(state, aOldTitle, a, title, openTime, checkAutoAnnounce,
                                valueOpenDateNotification, oldOpenTime);

                        // integrate with Gradebook
                        try {
                            initIntegrateWithGradebook(state, siteId, aOldTitle, oAssociateGradebookAssignment, a,
                                    title, dueTime, gradeType, gradePoints, addtoGradebook,
                                    associateGradebookAssignment, range, category);
                        } catch (AssignmentHasIllegalPointsException e) {
                            addAlert(state, rb.getString("addtogradebook.illegalPoints"));
                            M_log.warn(this + ":post_save_assignment " + e.getMessage());
                        }

                        // log event if there is a title update
                        if (!aOldTitle.equals(title)) {
                            // title changed
                            m_eventTrackingService.post(m_eventTrackingService.newEvent(
                                    AssignmentConstants.EVENT_UPDATE_ASSIGNMENT_TITLE, assignmentId, true));
                        }

                        if (!aOldAccessString.equals(a.getAccess().toString())) {
                            // site-group access setting changed
                            m_eventTrackingService.post(m_eventTrackingService.newEvent(
                                    AssignmentConstants.EVENT_UPDATE_ASSIGNMENT_ACCESS, assignmentId, true));
                        } else {
                            Collection aGroups = a.getGroups();
                            if (!(aOldGroups == null && aGroups == null) && !(aOldGroups != null && aGroups != null
                                    && aGroups.containsAll(aOldGroups) && aOldGroups.containsAll(aGroups))) {
                                //group changed
                                m_eventTrackingService.post(m_eventTrackingService.newEvent(
                                        AssignmentConstants.EVENT_UPDATE_ASSIGNMENT_ACCESS, assignmentId, true));
                            }
                        }

                        if (oldOpenTime != null && !oldOpenTime.equals(a.getOpenTime())) {
                            // open time change
                            m_eventTrackingService.post(m_eventTrackingService.newEvent(
                                    AssignmentConstants.EVENT_UPDATE_ASSIGNMENT_OPENDATE, assignmentId, true));
                        }

                        if (oldDueTime != null && !oldDueTime.equals(a.getDueTime())) {
                            // due time change
                            m_eventTrackingService.post(m_eventTrackingService.newEvent(
                                    AssignmentConstants.EVENT_UPDATE_ASSIGNMENT_DUEDATE, assignmentId, true));
                        }

                        if (oldCloseTime != null && !oldCloseTime.equals(a.getCloseTime())) {
                            // due time change
                            m_eventTrackingService.post(m_eventTrackingService.newEvent(
                                    AssignmentConstants.EVENT_UPDATE_ASSIGNMENT_CLOSEDATE, assignmentId, true));
                        }
                    }

                }

            } // if

        } // if

    } // post_save_assignment

    /**
     * supplement item related information
     * @param state
     * @param params
     * @param siteId
     * @param a
     */
    private void saveAssignmentSupplementItem(SessionState state, ParameterParser params, String siteId,
            AssignmentEdit a) {
        // assignment supplement items
        String aId = a.getId();
        //model answer
        if (state.getAttribute(MODELANSWER_TO_DELETE) != null
                && "true".equals((String) state.getAttribute(MODELANSWER_TO_DELETE))) {
            // to delete the model answer
            AssignmentModelAnswerItem mAnswer = m_assignmentSupplementItemService.getModelAnswer(aId);
            if (mAnswer != null) {
                m_assignmentSupplementItemService.cleanAttachment(mAnswer);
                m_assignmentSupplementItemService.removeModelAnswer(mAnswer);
            }
        } else if (state.getAttribute(MODELANSWER_TEXT) != null) {
            // edit/add model answer
            AssignmentModelAnswerItem mAnswer = m_assignmentSupplementItemService.getModelAnswer(aId);
            if (mAnswer == null) {
                mAnswer = m_assignmentSupplementItemService.newModelAnswer();
                m_assignmentSupplementItemService.saveModelAnswer(mAnswer);
            }
            mAnswer.setAssignmentId(a.getId());
            mAnswer.setText((String) state.getAttribute(MODELANSWER_TEXT));
            mAnswer.setShowTo(state.getAttribute(MODELANSWER_SHOWTO) != null
                    ? Integer.parseInt((String) state.getAttribute(MODELANSWER_SHOWTO))
                    : 0);
            mAnswer.setAttachmentSet(
                    getAssignmentSupplementItemAttachment(state, mAnswer, MODELANSWER_ATTACHMENTS));
            m_assignmentSupplementItemService.saveModelAnswer(mAnswer);
        }
        // note
        if (state.getAttribute(NOTE_TO_DELETE) != null
                && "true".equals((String) state.getAttribute(NOTE_TO_DELETE))) {
            // to remove note item
            AssignmentNoteItem nNote = m_assignmentSupplementItemService.getNoteItem(aId);
            if (nNote != null)
                m_assignmentSupplementItemService.removeNoteItem(nNote);
        } else if (state.getAttribute(NOTE_TEXT) != null) {
            // edit/add private note
            AssignmentNoteItem nNote = m_assignmentSupplementItemService.getNoteItem(aId);
            if (nNote == null)
                nNote = m_assignmentSupplementItemService.newNoteItem();
            nNote.setAssignmentId(a.getId());
            nNote.setNote((String) state.getAttribute(NOTE_TEXT));
            nNote.setShareWith(state.getAttribute(NOTE_SHAREWITH) != null
                    ? Integer.parseInt((String) state.getAttribute(NOTE_SHAREWITH))
                    : 0);
            nNote.setCreatorId(UserDirectoryService.getCurrentUser().getId());
            m_assignmentSupplementItemService.saveNoteItem(nNote);
        }
        // all purpose
        if (state.getAttribute(ALLPURPOSE_TO_DELETE) != null
                && "true".equals((String) state.getAttribute(ALLPURPOSE_TO_DELETE))) {
            // to remove allPurpose item
            AssignmentAllPurposeItem nAllPurpose = m_assignmentSupplementItemService.getAllPurposeItem(aId);
            if (nAllPurpose != null) {
                m_assignmentSupplementItemService.cleanAttachment(nAllPurpose);
                m_assignmentSupplementItemService.cleanAllPurposeItemAccess(nAllPurpose);
                m_assignmentSupplementItemService.removeAllPurposeItem(nAllPurpose);
            }
        } else if (state.getAttribute(ALLPURPOSE_TITLE) != null) {
            // edit/add private note
            AssignmentAllPurposeItem nAllPurpose = m_assignmentSupplementItemService.getAllPurposeItem(aId);
            if (nAllPurpose == null) {
                nAllPurpose = m_assignmentSupplementItemService.newAllPurposeItem();
                m_assignmentSupplementItemService.saveAllPurposeItem(nAllPurpose);
            }
            nAllPurpose.setAssignmentId(a.getId());
            nAllPurpose.setTitle((String) state.getAttribute(ALLPURPOSE_TITLE));
            nAllPurpose.setText((String) state.getAttribute(ALLPURPOSE_TEXT));

            boolean allPurposeShowFrom = state.getAttribute(ALLPURPOSE_SHOW_FROM) != null
                    ? ((Boolean) state.getAttribute(ALLPURPOSE_SHOW_FROM)).booleanValue()
                    : false;
            boolean allPurposeShowTo = state.getAttribute(ALLPURPOSE_SHOW_TO) != null
                    ? ((Boolean) state.getAttribute(ALLPURPOSE_SHOW_TO)).booleanValue()
                    : false;
            boolean allPurposeHide = state.getAttribute(ALLPURPOSE_HIDE) != null
                    ? ((Boolean) state.getAttribute(ALLPURPOSE_HIDE)).booleanValue()
                    : false;
            nAllPurpose.setHide(allPurposeHide);
            // save the release and retract dates
            if (allPurposeShowFrom && !allPurposeHide) {
                // save release date
                Time releaseTime = getTimeFromState(state, ALLPURPOSE_RELEASE_MONTH, ALLPURPOSE_RELEASE_DAY,
                        ALLPURPOSE_RELEASE_YEAR, ALLPURPOSE_RELEASE_HOUR, ALLPURPOSE_RELEASE_MIN);
                GregorianCalendar cal = new GregorianCalendar();
                cal.setTimeInMillis(releaseTime.getTime());
                nAllPurpose.setReleaseDate(cal.getTime());
            } else {
                nAllPurpose.setReleaseDate(null);
            }
            if (allPurposeShowTo && !allPurposeHide) {
                // save retract date
                Time retractTime = getTimeFromState(state, ALLPURPOSE_RETRACT_MONTH, ALLPURPOSE_RETRACT_DAY,
                        ALLPURPOSE_RETRACT_YEAR, ALLPURPOSE_RETRACT_HOUR, ALLPURPOSE_RETRACT_MIN);
                GregorianCalendar cal = new GregorianCalendar();
                cal.setTimeInMillis(retractTime.getTime());
                nAllPurpose.setRetractDate(cal.getTime());
            } else {
                nAllPurpose.setRetractDate(null);
            }
            nAllPurpose.setAttachmentSet(
                    getAssignmentSupplementItemAttachment(state, nAllPurpose, ALLPURPOSE_ATTACHMENTS));

            // clean the access list first
            if (state.getAttribute(ALLPURPOSE_ACCESS) != null) {
                // get the access settings
                List<String> accessList = (List<String>) state.getAttribute(ALLPURPOSE_ACCESS);

                m_assignmentSupplementItemService.cleanAllPurposeItemAccess(nAllPurpose);
                Set<AssignmentAllPurposeItemAccess> accessSet = new HashSet<AssignmentAllPurposeItemAccess>();
                try {
                    AuthzGroup realm = authzGroupService.getAuthzGroup(SiteService.siteReference(siteId));
                    Set<Role> roles = realm.getRoles();
                    for (Iterator iRoles = roles.iterator(); iRoles.hasNext();) {
                        // iterator through roles first
                        Role r = (Role) iRoles.next();
                        if (accessList.contains(r.getId())) {
                            AssignmentAllPurposeItemAccess access = m_assignmentSupplementItemService
                                    .newAllPurposeItemAccess();
                            access.setAccess(r.getId());
                            access.setAssignmentAllPurposeItem(nAllPurpose);
                            m_assignmentSupplementItemService.saveAllPurposeItemAccess(access);
                            accessSet.add(access);
                        } else {
                            // if the role is not selected, iterate through the users with this role
                            Set userIds = realm.getUsersHasRole(r.getId());
                            for (Iterator iUserIds = userIds.iterator(); iUserIds.hasNext();) {
                                String userId = (String) iUserIds.next();
                                if (accessList.contains(userId)) {
                                    AssignmentAllPurposeItemAccess access = m_assignmentSupplementItemService
                                            .newAllPurposeItemAccess();
                                    access.setAccess(userId);
                                    access.setAssignmentAllPurposeItem(nAllPurpose);
                                    m_assignmentSupplementItemService.saveAllPurposeItemAccess(access);
                                    accessSet.add(access);
                                }
                            }
                        }
                    }
                } catch (Exception e) {
                    M_log.warn(this + ":post_save_assignment " + e.toString() + "error finding authzGroup for = "
                            + siteId);
                }
                nAllPurpose.setAccessSet(accessSet);
            }
            m_assignmentSupplementItemService.saveAllPurposeItem(nAllPurpose);
        }
    }

    private Set<AssignmentSupplementItemAttachment> getAssignmentSupplementItemAttachment(SessionState state,
            AssignmentSupplementItemWithAttachment mItem, String attachmentString) {
        Set<AssignmentSupplementItemAttachment> sAttachments = new HashSet<AssignmentSupplementItemAttachment>();
        List<String> attIdList = m_assignmentSupplementItemService.getAttachmentListForSupplementItem(mItem);
        if (state.getAttribute(attachmentString) != null) {
            List currentAttachments = (List) state.getAttribute(attachmentString);
            for (Iterator aIterator = currentAttachments.iterator(); aIterator.hasNext();) {
                Reference attRef = (Reference) aIterator.next();
                String attRefId = attRef.getReference();
                // if the attachment is not exist, add it into db
                if (!attIdList.contains(attRefId)) {
                    AssignmentSupplementItemAttachment mAttach = m_assignmentSupplementItemService.newAttachment();
                    mAttach.setAssignmentSupplementItemWithAttachment(mItem);
                    mAttach.setAttachmentId(attRefId);
                    m_assignmentSupplementItemService.saveAttachment(mAttach);
                    sAttachments.add(mAttach);
                }
            }
        }
        return sAttachments;
    }

    /**
     * 
     */
    private boolean change_from_non_point(SessionState state, String assignmentId, String assignmentContentId,
            AssignmentContentEdit ac) {
        // whether this is an editing which changes non point_grade type to point grade type?
        if (StringUtils.trimToNull(assignmentId) != null && StringUtils.trimToNull(assignmentContentId) != null) {
            // editing
            if (ac.getTypeOfGrade() != Assignment.SCORE_GRADE_TYPE
                    && ((Integer) state.getAttribute(NEW_ASSIGNMENT_GRADE_TYPE))
                            .intValue() == Assignment.SCORE_GRADE_TYPE) {
                // changing from non-point grade type to point grade type?
                return true;
            }
        }
        return false;
    }

    /**
     * whether the resubmit option has been changed
     * @param state
     * @param a
     * @return
     */
    private boolean change_resubmit_option(SessionState state, Entity entity) {
        if (entity != null) {
            // editing
            return propertyValueChanged(state, entity, AssignmentSubmission.ALLOW_RESUBMIT_NUMBER)
                    || propertyValueChanged(state, entity, AssignmentSubmission.ALLOW_RESUBMIT_CLOSETIME);
        }
        return false;
    }

    /**
     * whether there is a change between state variable and object's property value
     * @param state
     * @param entity
     * @param propertyName
     * @return
     */
    private boolean propertyValueChanged(SessionState state, Entity entity, String propertyName) {
        String o_property_value = entity.getProperties().getProperty(propertyName);
        String n_property_value = state.getAttribute(propertyName) != null
                ? (String) state.getAttribute(propertyName)
                : null;
        if (o_property_value == null && n_property_value != null
                || o_property_value != null && n_property_value == null || o_property_value != null
                        && n_property_value != null && !o_property_value.equals(n_property_value)) {
            // there is a change
            return true;
        }
        return false;
    }

    /**
     * default sorting
     */
    private void setDefaultSort(SessionState state) {
        state.setAttribute(SORTED_BY, SORTED_BY_DEFAULT);
        state.setAttribute(SORTED_ASC, Boolean.TRUE.toString());
    }

    /**
     * Add submission objects if necessary for non-electronic type of assignment
     * @param state
     * @param a
     */
    private void addRemoveSubmissionsForNonElectronicAssignment(SessionState state, List submissions,
            HashSet<String> addSubmissionForUsers, HashSet<String> removeSubmissionForUsers, Assignment a) {
        // create submission object for those user who doesn't have one yet
        for (Iterator iUserIds = addSubmissionForUsers.iterator(); iUserIds.hasNext();) {
            String userId = (String) iUserIds.next();
            try {
                User u = UserDirectoryService.getUser(userId);
                // only include those users that can submit to this assignment
                if (u != null) {
                    // construct fake submissions for grading purpose
                    AssignmentSubmissionEdit submission = AssignmentService.addSubmission(a.getContext(), a.getId(),
                            userId);
                    if (submission != null) {
                        submission.setTimeSubmitted(TimeService.newTime());
                        submission.setSubmitted(true);
                        submission.setIsUserSubmission(false);
                        submission.setAssignment(a);
                        AssignmentService.commitEdit(submission);
                    }
                }
            } catch (Exception e) {
                M_log.warn(this + ":addRemoveSubmissionsForNonElectronicAssignment " + e.toString()
                        + "error adding submission for userId = " + userId);
            }
        }

        // remove submission object for those who no longer in the site
        for (Iterator iUserIds = removeSubmissionForUsers.iterator(); iUserIds.hasNext();) {
            String userId = (String) iUserIds.next();
            String submissionRef = null;
            // TODO: we don't have an efficient way to retrieve specific user's submission now, so until then, we still need to iterate the whole submission list
            for (Iterator iSubmissions = submissions.iterator(); iSubmissions.hasNext() && submissionRef == null;) {
                AssignmentSubmission submission = (AssignmentSubmission) iSubmissions.next();
                if (userId.equals(submission.getSubmitterId())) {
                    submissionRef = submission.getReference();
                }
            }
            if (submissionRef != null) {
                AssignmentSubmissionEdit submissionEdit = editSubmission(submissionRef,
                        "addRemoveSubmissionsForNonElectronicAssignment", state);
                if (submissionEdit != null) {
                    try {
                        AssignmentService.removeSubmission(submissionEdit);
                    } catch (PermissionException e) {
                        addAlert(state, rb.getFormattedMessage("youarenot_removeSubmission",
                                new Object[] { submissionEdit.getReference() }));
                        M_log.warn(this + ":deleteAssignmentObjects " + e.getMessage() + " "
                                + submissionEdit.getReference());
                    }
                }
            }
        }

    }

    private void initIntegrateWithGradebook(SessionState state, String siteId, String aOldTitle,
            String oAssociateGradebookAssignment, AssignmentEdit a, String title, Time dueTime, int gradeType,
            String gradePoints, String addtoGradebook, String associateGradebookAssignment, String range,
            long category) {

        GradebookExternalAssessmentService gExternal = (GradebookExternalAssessmentService) ComponentManager
                .get("org.sakaiproject.service.gradebook.GradebookExternalAssessmentService");

        String context = (String) state.getAttribute(STATE_CONTEXT_STRING);
        boolean gradebookExists = isGradebookDefined();

        // only if the gradebook is defined
        if (gradebookExists) {
            GradebookService g = (GradebookService) ComponentManager
                    .get("org.sakaiproject.service.gradebook.GradebookService");
            String gradebookUid = ToolManager.getCurrentPlacement().getContext();

            String aReference = a.getReference();
            String addUpdateRemoveAssignment = "remove";
            if (!addtoGradebook.equals(AssignmentService.GRADEBOOK_INTEGRATION_NO)) {
                // if integrate with Gradebook
                if (!AssignmentService.getAllowGroupAssignmentsInGradebook() && ("groups".equals(range))) {
                    // if grouped assignment is not allowed to add into Gradebook
                    addAlert(state, rb.getString("java.alert.noGroupedAssignmentIntoGB"));
                    String ref = a.getReference();

                    AssignmentEdit aEdit = editAssignment(a.getReference(), "initINtegrateWithGradebook", state,
                            false);
                    if (aEdit != null) {
                        aEdit.getPropertiesEdit().removeProperty(NEW_ASSIGNMENT_ADD_TO_GRADEBOOK);
                        aEdit.getPropertiesEdit()
                                .removeProperty(AssignmentService.PROP_ASSIGNMENT_ASSOCIATE_GRADEBOOK_ASSIGNMENT);
                        AssignmentService.commitEdit(aEdit);
                    }
                    integrateGradebook(state, aReference, associateGradebookAssignment, "remove", null, null, -1,
                            null, null, null, category);
                } else {
                    if (addtoGradebook.equals(AssignmentService.GRADEBOOK_INTEGRATION_ADD)) {
                        addUpdateRemoveAssignment = AssignmentService.GRADEBOOK_INTEGRATION_ADD;
                    } else if (addtoGradebook.equals(AssignmentService.GRADEBOOK_INTEGRATION_ASSOCIATE)) {
                        addUpdateRemoveAssignment = "update";
                    }

                    if (!"remove".equals(addUpdateRemoveAssignment) && gradeType == 3) {
                        try {
                            integrateGradebook(state, aReference, associateGradebookAssignment,
                                    addUpdateRemoveAssignment, aOldTitle, title, Integer.parseInt(gradePoints),
                                    dueTime, null, null, category);

                            // add all existing grades, if any, into Gradebook
                            integrateGradebook(state, aReference, associateGradebookAssignment, null, null, null,
                                    -1, null, null, "update", category);

                            // if the assignment has been assoicated with a different entry in gradebook before, remove those grades from the entry in Gradebook
                            if (StringUtils.trimToNull(oAssociateGradebookAssignment) != null
                                    && !oAssociateGradebookAssignment.equals(associateGradebookAssignment)) {
                                // remove all previously associated grades, if any, into Gradebook
                                integrateGradebook(state, aReference, oAssociateGradebookAssignment, null, null,
                                        null, -1, null, null, "remove", category);

                                // if the old assoicated assignment entry in GB is an external one, but doesn't have anything assoicated with it in Assignment tool, remove it
                                removeNonAssociatedExternalGradebookEntry(context, a.getReference(),
                                        oAssociateGradebookAssignment, gExternal, gradebookUid);
                            }
                        } catch (NumberFormatException nE) {
                            alertInvalidPoint(state, gradePoints, a.getContent().getFactor());
                            M_log.warn(this + ":initIntegrateWithGradebook " + nE.getMessage());
                        }
                    } else {
                        integrateGradebook(state, aReference, associateGradebookAssignment, "remove", null, null,
                                -1, null, null, null, category);
                    }
                }
            } else {
                // remove all previously associated grades, if any, into Gradebook
                integrateGradebook(state, aReference, oAssociateGradebookAssignment, null, null, null, -1, null,
                        null, "remove", category);

                // need to remove the associated gradebook entry if 1) it is external and 2) no other assignment are associated with it
                removeNonAssociatedExternalGradebookEntry(context, a.getReference(), oAssociateGradebookAssignment,
                        gExternal, gradebookUid);
            }
        }
    }

    private void removeNonAssociatedExternalGradebookEntry(String context, String assignmentReference,
            String associateGradebookAssignment, GradebookExternalAssessmentService gExternal,
            String gradebookUid) {
        boolean isExternalAssignmentDefined = gExternal.isExternalAssignmentDefined(gradebookUid,
                associateGradebookAssignment);
        if (isExternalAssignmentDefined) {
            // iterate through all assignments currently in the site, see if any is associated with this GB entry
            Iterator i = AssignmentService.getAssignmentsForContext(context);
            boolean found = false;
            while (!found && i.hasNext()) {
                Assignment aI = (Assignment) i.next();
                String gbEntry = aI.getProperties()
                        .getProperty(AssignmentService.PROP_ASSIGNMENT_ASSOCIATE_GRADEBOOK_ASSIGNMENT);
                if (aI.getProperties().getProperty(ResourceProperties.PROP_ASSIGNMENT_DELETED) == null
                        && gbEntry != null && gbEntry.equals(associateGradebookAssignment)
                        && !aI.getReference().equals(assignmentReference)) {
                    found = true;
                }
            }
            // so if none of the assignment in this site is associated with the entry, remove the entry
            if (!found) {
                gExternal.removeExternalAssessment(gradebookUid, associateGradebookAssignment);
            }
        }
    }

    private void integrateWithAnnouncement(SessionState state, String aOldTitle, AssignmentEdit a, String title,
            Time openTime, String checkAutoAnnounce, String valueOpenDateNotification, Time oldOpenTime) {
        if (checkAutoAnnounce.equalsIgnoreCase(Boolean.TRUE.toString())) {
            AnnouncementChannel channel = (AnnouncementChannel) state.getAttribute(ANNOUNCEMENT_CHANNEL);
            if (channel != null) {
                // whether the assignment's title or open date has been updated
                boolean updatedTitle = false;
                boolean updatedOpenDate = false;
                boolean updateAccess = false;

                String openDateAnnounced = StringUtils
                        .trimToNull(a.getProperties().getProperty(NEW_ASSIGNMENT_OPEN_DATE_ANNOUNCED));
                String openDateAnnouncementId = StringUtils.trimToNull(a.getPropertiesEdit()
                        .getProperty(ResourceProperties.PROP_ASSIGNMENT_OPENDATE_ANNOUNCEMENT_MESSAGE_ID));
                if (openDateAnnounced != null && openDateAnnouncementId != null) {
                    AnnouncementMessage message = null;

                    try {
                        message = channel.getAnnouncementMessage(openDateAnnouncementId);
                        if (!message.getAnnouncementHeader().getSubject()
                                .contains(title))/*whether title has been changed*/
                        {
                            updatedTitle = true;
                        }
                        if (!message.getBody()
                                .contains(openTime.toStringLocalFull())) /*whether open date has been changed*/
                        {
                            updatedOpenDate = true;
                        }
                        if ((message.getAnnouncementHeader().getAccess().equals(MessageHeader.MessageAccess.CHANNEL)
                                && !a.getAccess().equals(AssignmentAccess.SITE))
                                || (!message.getAnnouncementHeader().getAccess()
                                        .equals(MessageHeader.MessageAccess.CHANNEL)
                                        && a.getAccess().equals(AssignmentAccess.SITE))) {
                            updateAccess = true;
                        } else if (a.getAccess() == Assignment.AssignmentAccess.GROUPED) {
                            Collection<String> assnGroups = a.getGroups();
                            Collection<String> anncGroups = message.getAnnouncementHeader().getGroups();
                            if (!assnGroups.equals(anncGroups)) {
                                updateAccess = true;
                            }
                        }
                    } catch (IdUnusedException e) {
                        M_log.warn(this + ":integrateWithAnnouncement " + e.getMessage());
                    } catch (PermissionException e) {
                        M_log.warn(this + ":integrateWithAnnouncement " + e.getMessage());
                    }

                    if (updateAccess && message != null) {
                        try {
                            // if the access level has changed in assignment, remove the original announcement
                            channel.removeAnnouncementMessage(message.getId());
                        } catch (PermissionException e) {
                            M_log.warn(this
                                    + ":integrateWithAnnouncement PermissionException for remove message id="
                                    + message.getId() + " for assignment id=" + a.getId() + " " + e.getMessage());
                        }
                    }
                }

                // need to create announcement message if assignment is added or assignment has been updated
                if (openDateAnnounced == null || updatedTitle || updatedOpenDate || updateAccess) {
                    try {
                        AnnouncementMessageEdit message = channel.addAnnouncementMessage();
                        if (message != null) {
                            AnnouncementMessageHeaderEdit header = message.getAnnouncementHeaderEdit();

                            // add assignment id into property, to facilitate assignment lookup in Annoucement tool
                            message.getPropertiesEdit().addProperty("assignmentReference", a.getReference());

                            header.setDraft(/* draft */false);
                            header.replaceAttachments(/* attachment */EntityManager.newReferenceList());

                            if (openDateAnnounced == null) {
                                // making new announcement
                                header.setSubject(
                                        /* subject */rb.getFormattedMessage("assig6", new Object[] { title }));
                            } else {
                                // updated title
                                header.setSubject(
                                        /* subject */rb.getFormattedMessage("assig5", new Object[] { title }));
                            }

                            if (updatedOpenDate) {
                                // revised assignment open date
                                message.setBody(/* body */rb.getFormattedMessage("newope",
                                        new Object[] { FormattedText.convertPlaintextToFormattedText(title),
                                                openTime.toStringLocalFull() }));
                            } else {
                                // assignment open date
                                message.setBody(/* body */rb.getFormattedMessage("opedat",
                                        new Object[] { FormattedText.convertPlaintextToFormattedText(title),
                                                openTime.toStringLocalFull() }));
                            }

                            // group information
                            if (a.getAccess().equals(Assignment.AssignmentAccess.GROUPED)) {
                                try {
                                    // get the group ids selected
                                    Collection groupRefs = a.getGroups();

                                    // make a collection of Group objects
                                    Collection groups = new ArrayList();

                                    //make a collection of Group objects from the collection of group ref strings
                                    Site site = SiteService
                                            .getSite((String) state.getAttribute(STATE_CONTEXT_STRING));
                                    for (Iterator iGroupRefs = groupRefs.iterator(); iGroupRefs.hasNext();) {
                                        String groupRef = (String) iGroupRefs.next();
                                        groups.add(site.getGroup(groupRef));
                                    }

                                    // set access
                                    header.setGroupAccess(groups);
                                } catch (Exception exception) {
                                    // log
                                    M_log.warn(this + ":integrateWithAnnouncement " + exception.getMessage());
                                }
                            } else {
                                // site announcement
                                header.clearGroupAccess();
                            }

                            // save notification level if this is a future notification message
                            int notiLevel = NotificationService.NOTI_NONE;
                            String notification = "n";
                            if (Assignment.ASSIGNMENT_OPENDATE_NOTIFICATION_LOW.equals(valueOpenDateNotification)) {
                                notiLevel = NotificationService.NOTI_OPTIONAL;
                                notification = "o";
                            } else if (Assignment.ASSIGNMENT_OPENDATE_NOTIFICATION_HIGH
                                    .equals(valueOpenDateNotification)) {
                                notiLevel = NotificationService.NOTI_REQUIRED;
                                notification = "r";
                            }

                            Time now = TimeService.newTime();
                            if (openDateAnnounced != null && now.before(oldOpenTime)) {
                                message.getPropertiesEdit().addProperty("notificationLevel", notification);
                                message.getPropertiesEdit().addPropertyToList("noti_history",
                                        now.toStringLocalFull() + "_" + notiLevel + "_" + openDateAnnounced);
                            } else {
                                message.getPropertiesEdit().addPropertyToList("noti_history",
                                        now.toStringLocalFull() + "_" + notiLevel);
                            }

                            channel.commitMessage(message, notiLevel,
                                    "org.sakaiproject.announcement.impl.SiteEmailNotificationAnnc");
                        }

                        // commit related properties into Assignment object
                        AssignmentEdit aEdit = editAssignment(a.getReference(), "integrateWithAnnouncement", state,
                                false);
                        if (aEdit != null) {
                            aEdit.getPropertiesEdit().addProperty(NEW_ASSIGNMENT_OPEN_DATE_ANNOUNCED,
                                    Boolean.TRUE.toString());
                            if (message != null) {
                                aEdit.getPropertiesEdit().addProperty(
                                        ResourceProperties.PROP_ASSIGNMENT_OPENDATE_ANNOUNCEMENT_MESSAGE_ID,
                                        message.getId());
                            }
                            AssignmentService.commitEdit(aEdit);
                        }

                    } catch (PermissionException ee) {
                        M_log.warn(this + ":IntegrateWithAnnouncement " + rb.getString("cannotmak"));
                    }
                }
            }
        } // if
    }

    private void integrateWithCalendar(SessionState state, AssignmentEdit a, String title, Time dueTime,
            String checkAddDueTime, Time oldDueTime, ResourcePropertiesEdit aPropertiesEdit) {
        // Integrate with Sakai calendar tool
        Calendar c = (Calendar) state.getAttribute(CALENDAR);

        integrateWithCalendarTool(state, a, title, dueTime, checkAddDueTime, oldDueTime, aPropertiesEdit, c,
                ResourceProperties.PROP_ASSIGNMENT_DUEDATE_CALENDAR_EVENT_ID);

        // Integrate with additional calendar tool if deployed.
        Calendar additionalCal = (Calendar) state.getAttribute(ADDITIONAL_CALENDAR);

        if (additionalCal != null) {
            integrateWithCalendarTool(state, a, title, dueTime, checkAddDueTime, oldDueTime, aPropertiesEdit,
                    additionalCal, ResourceProperties.PROP_ASSIGNMENT_DUEDATE_ADDITIONAL_CALENDAR_EVENT_ID);
        }
    }

    // Checks to see if due date event in assignment properties exists on the calendar. 
    // If so, remove it and then add a new due date event to the calendar. Then update assignment property
    // with new event id.
    private void integrateWithCalendarTool(SessionState state, AssignmentEdit a, String title, Time dueTime,
            String checkAddDueTime, Time oldDueTime, ResourcePropertiesEdit aPropertiesEdit, Calendar c,
            String dueDateProperty) {
        if (c == null) {
            return;
        }
        String dueDateScheduled = a.getProperties().getProperty(NEW_ASSIGNMENT_DUE_DATE_SCHEDULED);
        String oldEventId = aPropertiesEdit.getProperty(dueDateProperty);
        CalendarEvent e = null;

        if (dueDateScheduled != null || oldEventId != null) {
            // find the old event
            boolean found = false;
            if (oldEventId != null) {
                try {
                    e = c.getEvent(oldEventId);
                    found = true;
                } catch (IdUnusedException ee) {
                    M_log.warn(this + ":integrateWithCalendarTool The old event has been deleted: event id="
                            + oldEventId + ". " + c.getClass().getName());
                } catch (PermissionException ee) {
                    M_log.warn(this
                            + ":integrateWithCalendarTool You do not have the permission to view the schedule event id= "
                            + oldEventId + ". " + c.getClass().getName());
                }
            } else {
                TimeBreakdown b = oldDueTime.breakdownLocal();
                // TODO: check- this was new Time(year...), not local! -ggolden
                Time startTime = TimeService.newTimeLocal(b.getYear(), b.getMonth(), b.getDay(), 0, 0, 0, 0);
                Time endTime = TimeService.newTimeLocal(b.getYear(), b.getMonth(), b.getDay(), 23, 59, 59, 999);
                try {
                    Iterator events = c.getEvents(TimeService.newTimeRange(startTime, endTime), null).iterator();

                    while ((!found) && (events.hasNext())) {
                        e = (CalendarEvent) events.next();
                        if (((String) e.getDisplayName()).indexOf(rb.getString("gen.assig") + " " + title) != -1) {
                            found = true;
                        }
                    }
                } catch (PermissionException ignore) {
                    // ignore PermissionException
                }
            }
            if (found) {
                removeOldEvent(title, c, e);
            }

        }

        if (checkAddDueTime.equalsIgnoreCase(Boolean.TRUE.toString())) {
            updateAssignmentWithEventId(state, a, title, dueTime, c, dueDateProperty);
        }
    }

    /**
     * Add event to calendar and then persist the event id to the assignment properties 
     * @param state
     * @param a AssignmentEdit
     * @param title Event title
     * @param dueTime Assignment due date/time
     * @param c Calendar
     * @param dueDateProperty Property name specifies the appropriate calendar
     */
    private void updateAssignmentWithEventId(SessionState state, AssignmentEdit a, String title, Time dueTime,
            Calendar c, String dueDateProperty) {
        CalendarEvent e;
        // commit related properties into Assignment object
        AssignmentEdit aEdit = editAssignment(a.getReference(), "updateAssignmentWithEventId", state, false);
        if (aEdit != null) {
            try {
                e = null;
                CalendarEvent.EventAccess eAccess = CalendarEvent.EventAccess.SITE;
                Collection eGroups = new ArrayList();

                if (aEdit.getAccess().equals(Assignment.AssignmentAccess.GROUPED)) {
                    eAccess = CalendarEvent.EventAccess.GROUPED;
                    Collection groupRefs = aEdit.getGroups();

                    // make a collection of Group objects from the collection of group ref strings
                    Site site = SiteService.getSite((String) state.getAttribute(STATE_CONTEXT_STRING));
                    for (Iterator iGroupRefs = groupRefs.iterator(); iGroupRefs.hasNext();) {
                        String groupRef = (String) iGroupRefs.next();
                        Group _aGroup = site.getGroup(groupRef);
                        if (_aGroup != null)
                            eGroups.add(_aGroup);
                    }
                }
                e = c.addEvent(
                        /* TimeRange */TimeService.newTimeRange(dueTime.getTime(), /* 0 duration */0 * 60 * 1000),
                        /* title */rb.getString("gen.due") + " " + title,
                        /* description */rb.getFormattedMessage("assign_due_event_desc",
                                new Object[] { title, dueTime.toStringLocalFull() }),
                        /* type */rb.getString("deadl"), /* location */"", /* access */ eAccess,
                        /* groups */ eGroups,
                        /* attachments */null /*SAK-27919 do not include assignment attachments.*/);

                aEdit.getProperties().addProperty(NEW_ASSIGNMENT_DUE_DATE_SCHEDULED, Boolean.TRUE.toString());
                if (e != null) {
                    aEdit.getProperties().addProperty(dueDateProperty, e.getId());

                    // edit the calendar object and add an assignment id field
                    addAssignmentIdToCalendar(a, c, e);
                }
                // TODO do we care if the event is null?

            } catch (IdUnusedException ee) {
                M_log.warn(this + ":updateAssignmentWithEventId " + ee.getMessage());
            } catch (PermissionException ee) {
                M_log.warn(this + ":updateAssignmentWithEventId " + rb.getString("cannotfin1"));
            } catch (Exception ee) {
                M_log.warn(this + ":updateAssignmentWithEventId " + ee.getMessage());
            }
            // try-catch

            AssignmentService.commitEdit(aEdit);
        }
    }

    // Persist the assignment id to the calendar
    private void addAssignmentIdToCalendar(AssignmentEdit a, Calendar c, CalendarEvent e)
            throws IdUnusedException, PermissionException, InUseException {

        if (c != null && e != null && a != null) {
            CalendarEventEdit edit = c.getEditEvent(e.getId(),
                    org.sakaiproject.calendar.api.CalendarService.EVENT_ADD_CALENDAR);

            edit.setField(AssignmentConstants.NEW_ASSIGNMENT_DUEDATE_CALENDAR_ASSIGNMENT_ID, a.getId());

            c.commitEvent(edit);
        }
    }

    // Remove an existing event from the calendar
    private void removeOldEvent(String title, Calendar c, CalendarEvent e) {
        // remove the found old event
        if (c != null && e != null) {
            try {
                c.removeEvent(c.getEditEvent(e.getId(), CalendarService.EVENT_REMOVE_CALENDAR));
            } catch (PermissionException ee) {
                M_log.warn(this + ":removeOldEvent " + rb.getFormattedMessage("cannotrem", new Object[] { title }));
            } catch (InUseException ee) {
                M_log.warn(this + ":removeOldEvent " + rb.getString("somelsis_calendar"));
            } catch (IdUnusedException ee) {
                M_log.warn(this + ":removeOldEvent "
                        + rb.getFormattedMessage("cannotfin6", new Object[] { e.getId() }));
            }
        }
    }

    private void commitAssignmentEdit(SessionState state, boolean post, AssignmentContentEdit ac, AssignmentEdit a,
            String title, Time visibleTime, Time openTime, Time dueTime, Time closeTime, boolean enableCloseDate,
            String s, String range, Collection groups, boolean isGroupSubmit, boolean usePeerAssessment,
            Time peerPeriodTime, boolean peerAssessmentAnonEval, boolean peerAssessmentStudentViewReviews,
            int peerAssessmentNumReviews, String peerAssessmentInstructions) {
        a.setTitle(title);
        a.setContent(ac);
        a.setContext((String) state.getAttribute(STATE_CONTEXT_STRING));
        a.setSection(s);
        a.setVisibleTime(visibleTime);
        a.setOpenTime(openTime);
        a.setDueTime(dueTime);
        a.setGroup(isGroupSubmit);
        a.setDropDeadTime(dueTime);
        if (enableCloseDate) {
            a.setCloseTime(closeTime);
        } else {
            // if editing an old assignment with close date
            if (a.getCloseTime() != null) {
                a.setCloseTime(null);
            }
        }

        if (Boolean.TRUE.equals(state.getAttribute("contentReviewSuccess"))) {
            // post the assignment if appropriate
            a.setDraft(!post);
        } else {
            // setup for content review failed, save as a draft
            a.setDraft(true);
        }

        a.setAllowPeerAssessment(usePeerAssessment);
        a.setPeerAssessmentPeriod(peerPeriodTime);
        a.setPeerAssessmentAnonEval(peerAssessmentAnonEval);
        a.setPeerAssessmentStudentViewReviews(peerAssessmentStudentViewReviews);
        a.setPeerAssessmentNumReviews(peerAssessmentNumReviews);
        a.setPeerAssessmentInstructions(peerAssessmentInstructions);

        try {
            // SAK-26349 - clear group selection before changing, otherwise it can result in a PermissionException
            a.clearGroupAccess();

            if ("site".equals(range)) {
                a.setAccess(Assignment.AssignmentAccess.SITE);
            } else if ("groups".equals(range)) {
                a.setGroupAccess(groups);
            }
        } catch (PermissionException e) {
            addAlert(state, rb.getString("youarenot_addAssignmentContent"));
            M_log.warn(this + ":commitAssignmentEdit " + rb.getString("youarenot_addAssignmentContent")
                    + e.getMessage());
        }

        if (state.getAttribute(STATE_MESSAGE) == null) {
            // commit assignment first
            AssignmentService.commitEdit(a);
        }

        if (a.isGroup()) {
            Collection<String> _dupUsers = usersInMultipleGroups(a);
            if (_dupUsers.size() > 0) {
                addAlert(state, rb.getString("group.user.multiple.error"));
                M_log.warn(this + ":post_save_assignment at least one user in multiple groups.");
            }
        }
    }

    private void editAssignmentProperties(AssignmentEdit a, String checkAddDueTime, String checkAutoAnnounce,
            String addtoGradebook, String associateGradebookAssignment, String allowResubmitNumber,
            ResourcePropertiesEdit aPropertiesEdit, boolean post, Time closeTime, String checkAnonymousGrading) {
        if (aPropertiesEdit.getProperty("newAssignment") != null) {
            if (aPropertiesEdit.getProperty("newAssignment").equalsIgnoreCase(Boolean.TRUE.toString())) {
                // not a newly created assignment, been added.
                aPropertiesEdit.addProperty("newAssignment", Boolean.FALSE.toString());
            }
        } else {
            // for newly created assignment
            aPropertiesEdit.addProperty("newAssignment", Boolean.TRUE.toString());
        }
        if (checkAddDueTime != null) {
            aPropertiesEdit.addProperty(ResourceProperties.NEW_ASSIGNMENT_CHECK_ADD_DUE_DATE, checkAddDueTime);
        } else {
            aPropertiesEdit.removeProperty(ResourceProperties.NEW_ASSIGNMENT_CHECK_ADD_DUE_DATE);
        }
        aPropertiesEdit.addProperty(ResourceProperties.NEW_ASSIGNMENT_CHECK_AUTO_ANNOUNCE, checkAutoAnnounce);

        aPropertiesEdit.addProperty(NEW_ASSIGNMENT_ADD_TO_GRADEBOOK, addtoGradebook);
        aPropertiesEdit.addProperty(AssignmentService.PROP_ASSIGNMENT_ASSOCIATE_GRADEBOOK_ASSIGNMENT,
                associateGradebookAssignment);

        // SAK-17606
        aPropertiesEdit.addProperty(NEW_ASSIGNMENT_CHECK_ANONYMOUS_GRADING, checkAnonymousGrading);

        if (post && addtoGradebook.equals(AssignmentService.GRADEBOOK_INTEGRATION_ADD)) {
            // if the choice is to add an entry into Gradebook, let just mark it as associated with such new entry then
            aPropertiesEdit.addProperty(NEW_ASSIGNMENT_ADD_TO_GRADEBOOK,
                    AssignmentService.GRADEBOOK_INTEGRATION_ASSOCIATE);
            aPropertiesEdit.addProperty(AssignmentService.PROP_ASSIGNMENT_ASSOCIATE_GRADEBOOK_ASSIGNMENT,
                    a.getReference());

        }

        // allow resubmit number and default assignment resubmit closeTime (dueTime)
        if (allowResubmitNumber != null && closeTime != null) {
            aPropertiesEdit.addProperty(AssignmentSubmission.ALLOW_RESUBMIT_NUMBER, allowResubmitNumber);
            aPropertiesEdit.addProperty(AssignmentSubmission.ALLOW_RESUBMIT_CLOSETIME,
                    String.valueOf(closeTime.getTime()));
        } else if (allowResubmitNumber == null || allowResubmitNumber.length() == 0
                || "0".equals(allowResubmitNumber)) {
            aPropertiesEdit.removeProperty(AssignmentSubmission.ALLOW_RESUBMIT_NUMBER);
            aPropertiesEdit.removeProperty(AssignmentSubmission.ALLOW_RESUBMIT_CLOSETIME);
        }
    }

    private void commitAssignmentContentEdit(SessionState state, AssignmentContentEdit ac, String assignmentRef,
            String title, int submissionType, boolean useReviewService, boolean allowStudentViewReport,
            int gradeType, String gradePoints, String description, String checkAddHonorPledge, List attachments,
            String submitReviewRepo, String generateOriginalityReport, boolean checkTurnitin, boolean checkInternet,
            boolean checkPublications, boolean checkInstitution, boolean excludeBibliographic,
            boolean excludeQuoted, int excludeType, int excludeValue, Time openTime, Time dueTime, Time closeTime,
            boolean hideDueDate) {
        ac.setTitle(title);
        ac.setInstructions(description);
        ac.setHonorPledge(Integer.parseInt(checkAddHonorPledge));
        ac.setHideDueDate(hideDueDate);
        ac.setTypeOfSubmission(submissionType);
        ac.setAllowReviewService(useReviewService);
        ac.setAllowStudentViewReport(allowStudentViewReport);
        ac.setSubmitReviewRepo(submitReviewRepo);
        ac.setGenerateOriginalityReport(generateOriginalityReport);
        ac.setCheckInstitution(checkInstitution);
        ac.setCheckInternet(checkInternet);
        ac.setCheckPublications(checkPublications);
        ac.setCheckTurnitin(checkTurnitin);
        ac.setExcludeBibliographic(excludeBibliographic);
        ac.setExcludeQuoted(excludeQuoted);
        ac.setExcludeType(excludeType);
        ac.setExcludeValue(excludeValue);
        ac.setTypeOfGrade(gradeType);
        if (gradeType == 3) {
            try {
                ac.setMaxGradePoint(Integer.parseInt(gradePoints));
            } catch (NumberFormatException e) {
                alertInvalidPoint(state, gradePoints, ac.getFactor());
                M_log.warn(this + ":commitAssignmentContentEdit " + e.getMessage());
            }
        }
        ac.setGroupProject(true);
        ac.setIndividuallyGraded(false);

        if (submissionType != 1) {
            ac.setAllowAttachments(true);
        } else {
            ac.setAllowAttachments(false);
        }

        // clear attachments
        ac.clearAttachments();

        if (attachments != null) {
            // add each attachment
            Iterator it = EntityManager.newReferenceList(attachments).iterator();
            while (it.hasNext()) {
                Reference r = (Reference) it.next();
                ac.addAttachment(r);
            }
        }
        state.setAttribute(ATTACHMENTS_MODIFIED, Boolean.valueOf(false));

        // commit the changes
        AssignmentService.commitEdit(ac);

        if (ac.getAllowReviewService()) {
            if (!createTIIAssignment(ac, assignmentRef, openTime, dueTime, closeTime, state)) {
                state.setAttribute("contentReviewSuccess", Boolean.FALSE);
            }
        }

    }

    public boolean createTIIAssignment(AssignmentContentEdit assign, String assignmentRef, Time openTime,
            Time dueTime, Time closeTime, SessionState state) {
        Map opts = new HashMap();

        opts.put("submit_papers_to", assign.getSubmitReviewRepo());
        opts.put("report_gen_speed", assign.getGenerateOriginalityReport());
        opts.put("institution_check", assign.isCheckInstitution() ? "1" : "0");
        opts.put("internet_check", assign.isCheckInternet() ? "1" : "0");
        opts.put("journal_check", assign.isCheckPublications() ? "1" : "0");
        opts.put("s_paper_check", assign.isCheckTurnitin() ? "1" : "0");
        opts.put("s_view_report", assign.getAllowStudentViewReport() ? "1" : "0");
        if (ServerConfigurationService.getBoolean("turnitin.option.exclude_bibliographic", true)) {
            //we don't want to pass parameters if the user didn't get an option to set it
            opts.put("exclude_biblio", assign.isExcludeBibliographic() ? "1" : "0");
        }
        if (ServerConfigurationService.getBoolean("turnitin.option.exclude_quoted", true)) {
            //we don't want to pass parameters if the user didn't get an option to set it
            opts.put("exclude_quoted", assign.isExcludeQuoted() ? "1" : "0");
        }

        if ((assign.getExcludeType() == 1 || assign.getExcludeType() == 2) && assign.getExcludeValue() >= 0
                && assign.getExcludeValue() <= 100) {
            opts.put("exclude_type", Integer.toString(assign.getExcludeType()));
            opts.put("exclude_value", Integer.toString(assign.getExcludeValue()));
        }
        opts.put("late_accept_flag", "1");

        SimpleDateFormat dform = ((SimpleDateFormat) DateFormat.getDateInstance());
        dform.applyPattern("yyyy-MM-dd HH:mm:ss");
        opts.put("dtstart", dform.format(openTime.getTime()));
        opts.put("dtdue", dform.format(dueTime.getTime()));
        //opts.put("dtpost", dform.format(closeTime.getTime()));       
        opts.put("title", assign.getTitle());
        opts.put("instructions", assign.getInstructions());
        if (assign.getAttachments() != null && assign.getAttachments().size() > 0) {
            List<String> attachments = new ArrayList<String>();
            for (Reference ref : assign.getAttachments()) {
                attachments.add(ref.getReference());
            }
            opts.put("attachments", attachments);
        }
        try {
            contentReviewService.createAssignment(assign.getContext(), assignmentRef, opts);
            return true;
        } catch (Exception e) {
            M_log.error(e);
            String uiService = ServerConfigurationService.getString("ui.service", "Sakai");
            String[] args = new String[] { contentReviewService.getServiceName(), uiService, e.toString() };
            state.setAttribute("alertMessage",
                    rb.getFormattedMessage("content_review.error.createAssignment", args));
        }
        return false;
    }

    /**
     * reorderAssignments
     */
    private void reorderAssignments(RunData data) {
        SessionState state = ((JetspeedRunData) data).getPortletSessionState(((JetspeedRunData) data).getJs_peid());
        ParameterParser params = data.getParameters();

        List assignments = prepPage(state);

        Iterator it = assignments.iterator();

        while (it.hasNext()) // reads and writes the parameter for default ordering
        {
            Assignment a = (Assignment) it.next();
            String assignmentid = a.getId();
            String assignmentposition = params.getString("position_" + assignmentid);
            SecurityAdvisor sa = new SecurityAdvisor() {
                public SecurityAdvice isAllowed(String userId, String function, String reference) {
                    return function.equals(AssignmentService.SECURE_UPDATE_ASSIGNMENT) ? SecurityAdvice.ALLOWED
                            : SecurityAdvice.PASS;
                }
            };
            try {
                // put in a security advisor so we can create citationAdmin site without need
                // of further permissions
                m_securityService.pushAdvisor(sa);
                AssignmentEdit ae = editAssignment(assignmentid, "reorderAssignments", state, true);
                if (ae != null) {
                    ae.setPosition_order(Long.valueOf(assignmentposition).intValue());
                    AssignmentService.commitEdit(ae);
                }
            } catch (Exception e) {
                M_log.warn(
                        this + ":reorderAssignments : not able to edit assignment " + assignmentid + e.toString());
            } finally {
                // remove advisor
                m_securityService.popAdvisor(sa);
            }
        }

        if (state.getAttribute(STATE_MESSAGE) == null) {
            state.setAttribute(STATE_MODE, MODE_LIST_ASSIGNMENTS);
            state.setAttribute(ATTACHMENTS, EntityManager.newReferenceList());
        }
    } // reorderAssignments

    private AssignmentContentEdit editAssignmentContent(String assignmentContentId, String callingFunctionName,
            SessionState state, boolean allowAdd) {
        AssignmentContentEdit ac = null;
        if (assignmentContentId.length() == 0 && allowAdd) {
            // new assignment
            try {
                ac = AssignmentService.addAssignmentContent((String) state.getAttribute(STATE_CONTEXT_STRING));
            } catch (PermissionException e) {
                addAlert(state, rb.getString("youarenot_addAssignmentContent"));
                M_log.warn(this + ":" + callingFunctionName + " " + e.getMessage()
                        + (String) state.getAttribute(STATE_CONTEXT_STRING));
            }
        } else {
            try {
                // edit assignment
                ac = AssignmentService.editAssignmentContent(assignmentContentId);
            } catch (InUseException e) {
                addAlert(state,
                        rb.getFormattedMessage("somelsis_assignmentContent", new Object[] { assignmentContentId }));
                M_log.warn(this + ":" + callingFunctionName + " " + e.getMessage());
            } catch (IdUnusedException e) {
                addAlert(state, rb.getFormattedMessage("cannotfin_assignmentContent",
                        new Object[] { assignmentContentId }));
                M_log.warn(this + ":" + callingFunctionName + " " + e.getMessage());
            } catch (PermissionException e) {
                addAlert(state, rb.getFormattedMessage("youarenot_viewAssignmentContent",
                        new Object[] { assignmentContentId }));
                M_log.warn(this + ":" + callingFunctionName + " " + e.getMessage());
            }

        }
        return ac;
    }

    /**
     * construct time object based on various state variables
     * @param state
     * @param monthString
     * @param dayString
     * @param yearString
     * @param hourString
     * @param minString
     * @return
     */
    private Time getTimeFromState(SessionState state, String monthString, String dayString, String yearString,
            String hourString, String minString) {
        if (state.getAttribute(monthString) != null || state.getAttribute(dayString) != null
                || state.getAttribute(yearString) != null || state.getAttribute(hourString) != null
                || state.getAttribute(minString) != null) {
            int month = ((Integer) state.getAttribute(monthString)).intValue();
            int day = ((Integer) state.getAttribute(dayString)).intValue();
            int year = ((Integer) state.getAttribute(yearString)).intValue();
            int hour = ((Integer) state.getAttribute(hourString)).intValue();
            int min = ((Integer) state.getAttribute(minString)).intValue();
            return TimeService.newTimeLocal(year, month, day, hour, min, 0, 0);
        } else {
            return null;
        }
    }

    /**
     * Action is to post new assignment
     */
    public void doSave_assignment(RunData data) {
        if (!"POST".equals(data.getRequest().getMethod())) {
            return;
        }

        post_save_assignment(data, "save");

    } // doSave_assignment

    /**
     * Action is to reorder assignments
     */
    public void doReorder_assignment(RunData data) {
        if (!"POST".equals(data.getRequest().getMethod())) {
            return;
        }

        reorderAssignments(data);
    } // doReorder_assignments

    /**
     * Action is to preview the selected assignment
     */
    public void doPreview_assignment(RunData data) {
        if (!"POST".equals(data.getRequest().getMethod())) {
            return;
        }

        SessionState state = ((JetspeedRunData) data).getPortletSessionState(((JetspeedRunData) data).getJs_peid());

        setNewAssignmentParameters(data, true);

        String assignmentId = data.getParameters().getString("assignmentId");
        state.setAttribute(PREVIEW_ASSIGNMENT_ASSIGNMENT_ID, assignmentId);

        String assignmentContentId = data.getParameters().getString("assignmentContentId");
        state.setAttribute(PREVIEW_ASSIGNMENT_ASSIGNMENTCONTENT_ID, assignmentContentId);

        state.setAttribute(PREVIEW_ASSIGNMENT_ASSIGNMENT_HIDE_FLAG, Boolean.valueOf(false));
        state.setAttribute(PREVIEW_ASSIGNMENT_STUDENT_VIEW_HIDE_FLAG, Boolean.valueOf(true));
        if (state.getAttribute(STATE_MESSAGE) == null) {
            state.setAttribute(STATE_MODE, MODE_INSTRUCTOR_PREVIEW_ASSIGNMENT);
        }

    } // doPreview_assignment

    /**
     * Action is to view the selected assignment
     */
    public void doView_assignment(RunData data) {
        SessionState state = ((JetspeedRunData) data).getPortletSessionState(((JetspeedRunData) data).getJs_peid());
        ParameterParser params = data.getParameters();

        // show the assignment portion
        state.setAttribute(VIEW_ASSIGNMENT_HIDE_ASSIGNMENT_FLAG, Boolean.valueOf(false));
        // show the student view portion
        state.setAttribute(VIEW_ASSIGNMENT_HIDE_STUDENT_VIEW_FLAG, Boolean.valueOf(true));

        String assignmentId = params.getString("assignmentId");
        state.setAttribute(VIEW_ASSIGNMENT_ID, assignmentId);

        Assignment a = getAssignment(assignmentId, "doView_assignment", state);

        // get resubmission option into state
        assignment_resubmission_option_into_state(a, null, state);

        // assignment read event
        m_eventTrackingService.post(
                m_eventTrackingService.newEvent(AssignmentConstants.EVENT_ACCESS_ASSIGNMENT, assignmentId, false));

        if (state.getAttribute(STATE_MESSAGE) == null) {
            state.setAttribute(STATE_MODE, MODE_INSTRUCTOR_VIEW_ASSIGNMENT);
        }

    } // doView_Assignment

    /**
     * Action is for student to view one assignment content
     */
    public void doView_assignment_as_student(RunData data) {
        SessionState state = ((JetspeedRunData) data).getPortletSessionState(((JetspeedRunData) data).getJs_peid());
        ParameterParser params = data.getParameters();

        String assignmentId = params.getString("assignmentId");
        state.setAttribute(VIEW_ASSIGNMENT_ID, assignmentId);

        if (state.getAttribute(STATE_MESSAGE) == null) {
            state.setAttribute(STATE_MODE, MODE_STUDENT_VIEW_ASSIGNMENT);
        }

    } // doView_assignment_as_student

    // TODO: investigate if this method can be removed
    public void doView_submissionReviews(RunData data) {
        String submissionId = data.getParameters().getString("submissionId");
        SessionState state = ((JetspeedRunData) data).getPortletSessionState(((JetspeedRunData) data).getJs_peid());
        String assessorId = data.getParameters().getString("assessorId");
        String assignmentId = StringUtils.trimToNull(data.getParameters().getString("assignmentId"));
        Assignment a = getAssignment(assignmentId, "doEdit_assignment", state);
        if (submissionId != null && !"".equals(submissionId) && a != null) {
            //set the page to go to
            state.setAttribute(VIEW_ASSIGNMENT_ID, assignmentId);
            List<PeerAssessmentItem> peerAssessmentItems = assignmentPeerAssessmentService
                    .getPeerAssessmentItemsByAssignmentId(a.getId(), a.getContent().getFactor());
            state.setAttribute(PEER_ASSESSMENT_ITEMS, peerAssessmentItems);
            List<String> submissionIds = new ArrayList<String>();
            if (peerAssessmentItems != null) {
                for (PeerAssessmentItem item : peerAssessmentItems) {
                    submissionIds.add(item.getSubmissionId());
                }
            }
            state.setAttribute(USER_SUBMISSIONS, submissionIds);
            state.setAttribute(GRADE_SUBMISSION_SUBMISSION_ID, submissionId);
            state.setAttribute(PEER_ASSESSMENT_ASSESSOR_ID, assessorId);
            state.setAttribute(STATE_MODE, MODE_STUDENT_REVIEW_EDIT);
        } else {
            addAlert(state, rb.getString("peerassessment.notavailable"));
        }
    }

    // TODO: investigate if this method can be removed
    public void doEdit_review(RunData data) {
        SessionState state = ((JetspeedRunData) data).getPortletSessionState(((JetspeedRunData) data).getJs_peid());
        ParameterParser params = data.getParameters();

        String assignmentId = StringUtils.trimToNull(params.getString("assignmentId"));
        Assignment a = getAssignment(assignmentId, "doEdit_assignment", state);
        if (a != null && a.isPeerAssessmentOpen()) {
            //set the page to go to
            state.setAttribute(VIEW_ASSIGNMENT_ID, assignmentId);
            String submissionId = null;
            List<PeerAssessmentItem> peerAssessmentItems = assignmentPeerAssessmentService.getPeerAssessmentItems(
                    a.getId(), UserDirectoryService.getCurrentUser().getId(), a.getContent().getFactor());
            state.setAttribute(PEER_ASSESSMENT_ITEMS, peerAssessmentItems);
            List<String> submissionIds = new ArrayList<String>();
            if (peerAssessmentItems != null) {
                for (PeerAssessmentItem item : peerAssessmentItems) {
                    if (!item.isSubmitted()) {
                        submissionIds.add(item.getSubmissionId());
                    }
                }
            }
            if (params.getString("submissionId") != null
                    && submissionIds.contains(params.getString("submissionId"))) {
                submissionId = StringUtils.trimToNull(params.getString("submissionId"));
            } else if (submissionIds.size() > 0) {
                //submission Id wasn't passed in, let's find one for this user
                //grab the first one:
                submissionId = submissionIds.get(0);
            }

            if (submissionId != null) {
                state.setAttribute(USER_SUBMISSIONS, submissionIds);
                state.setAttribute(GRADE_SUBMISSION_SUBMISSION_ID, submissionId);
                state.setAttribute(STATE_MODE, MODE_STUDENT_REVIEW_EDIT);
            } else {
                if (peerAssessmentItems != null && peerAssessmentItems.size() > 0) {
                    //student has submitted all their peer reviews, nothing left to review
                    //(student really shouldn't get to this warning)
                    addAlert(state, rb.getString("peerassessment.allSubmitted"));
                } else {
                    //wasn't able to find a submission id, throw error
                    addAlert(state, rb.getString("peerassessment.notavailable"));
                }
            }
        } else {
            addAlert(state, rb.getString("peerassessment.notavailable"));
        }
    }

    /**
     * Action is to show the edit assignment screen
     */
    public void doEdit_assignment(RunData data) {
        SessionState state = ((JetspeedRunData) data).getPortletSessionState(((JetspeedRunData) data).getJs_peid());
        ParameterParser params = data.getParameters();

        String assignmentId = StringUtils.trimToNull(params.getString("assignmentId"));
        if (AssignmentService.allowUpdateAssignment(assignmentId)) {
            Assignment a = getAssignment(assignmentId, "doEdit_assignment", state);
            if (a != null) {
                // whether the user can modify the assignment
                state.setAttribute(EDIT_ASSIGNMENT_ID, assignmentId);

                // for the non_electronice assignment, submissions are auto-generated by the time that assignment is created;
                // don't need to go through the following checkings.
                if (a.getContent().getTypeOfSubmission() != Assignment.NON_ELECTRONIC_ASSIGNMENT_SUBMISSION) {
                    Iterator submissions = AssignmentService.getSubmissions(a).iterator();
                    if (submissions.hasNext()) {
                        // any submitted?
                        boolean anySubmitted = false;
                        for (; submissions.hasNext() && !anySubmitted;) {
                            AssignmentSubmission s = (AssignmentSubmission) submissions.next();
                            if (s.getSubmitted() && s.getTimeSubmitted() != null) {
                                anySubmitted = true;
                            }
                        }

                        // any draft submission
                        boolean anyDraft = false;
                        for (; submissions.hasNext() && !anyDraft;) {
                            AssignmentSubmission s = (AssignmentSubmission) submissions.next();
                            if (!s.getSubmitted()) {
                                anyDraft = true;
                            }
                        }
                        if (anySubmitted) {
                            // if there is any submitted submission to this assignment, show alert
                            addAlert(state, rb.getFormattedMessage("hassum", new Object[] { a.getTitle() }));
                        }

                        if (anyDraft) {
                            // otherwise, show alert about someone has started working on the assignment, not necessarily submitted
                            addAlert(state, rb.getString("hasDraftSum"));
                        }
                    }
                }

                // SECTION MOD
                state.setAttribute(STATE_SECTION_STRING, a.getSection());

                // put the names and values into vm file
                state.setAttribute(NEW_ASSIGNMENT_TITLE, a.getTitle());
                state.setAttribute(NEW_ASSIGNMENT_ORDER, a.getPosition_order());

                if (Boolean
                        .valueOf(ServerConfigurationService.getBoolean("assignment.visible.date.enabled", false))) {
                    putTimePropertiesInState(state, a.getVisibleTime(), NEW_ASSIGNMENT_VISIBLEMONTH,
                            NEW_ASSIGNMENT_VISIBLEDAY, NEW_ASSIGNMENT_VISIBLEYEAR, NEW_ASSIGNMENT_VISIBLEHOUR,
                            NEW_ASSIGNMENT_VISIBLEMIN);
                    state.setAttribute(NEW_ASSIGNMENT_VISIBLETOGGLE, a.getVisibleTime() != null);
                }

                putTimePropertiesInState(state, a.getOpenTime(), NEW_ASSIGNMENT_OPENMONTH, NEW_ASSIGNMENT_OPENDAY,
                        NEW_ASSIGNMENT_OPENYEAR, NEW_ASSIGNMENT_OPENHOUR, NEW_ASSIGNMENT_OPENMIN);
                // generate alert when editing an assignment past open date
                if (a.getOpenTime().before(TimeService.newTime())) {
                    addAlert(state, rb.getString("youarenot20"));
                }

                putTimePropertiesInState(state, a.getDueTime(), NEW_ASSIGNMENT_DUEMONTH, NEW_ASSIGNMENT_DUEDAY,
                        NEW_ASSIGNMENT_DUEYEAR, NEW_ASSIGNMENT_DUEHOUR, NEW_ASSIGNMENT_DUEMIN);
                // generate alert when editing an assignment past due date
                if (a.getDueTime().before(TimeService.newTime())) {
                    addAlert(state, rb.getString("youarenot17"));
                }

                if (a.getCloseTime() != null) {
                    state.setAttribute(NEW_ASSIGNMENT_ENABLECLOSEDATE, Boolean.valueOf(true));
                    putTimePropertiesInState(state, a.getCloseTime(), NEW_ASSIGNMENT_CLOSEMONTH,
                            NEW_ASSIGNMENT_CLOSEDAY, NEW_ASSIGNMENT_CLOSEYEAR, NEW_ASSIGNMENT_CLOSEHOUR,
                            NEW_ASSIGNMENT_CLOSEMIN);
                } else {
                    state.setAttribute(NEW_ASSIGNMENT_ENABLECLOSEDATE, Boolean.valueOf(false));
                    state.setAttribute(NEW_ASSIGNMENT_CLOSEMONTH, state.getAttribute(NEW_ASSIGNMENT_DUEMONTH));
                    state.setAttribute(NEW_ASSIGNMENT_CLOSEDAY, state.getAttribute(NEW_ASSIGNMENT_DUEDAY));
                    state.setAttribute(NEW_ASSIGNMENT_CLOSEYEAR, state.getAttribute(NEW_ASSIGNMENT_DUEYEAR));
                    state.setAttribute(NEW_ASSIGNMENT_CLOSEHOUR, state.getAttribute(NEW_ASSIGNMENT_DUEHOUR));
                    state.setAttribute(NEW_ASSIGNMENT_CLOSEMIN, state.getAttribute(NEW_ASSIGNMENT_DUEMIN));
                }
                state.setAttribute(NEW_ASSIGNMENT_SECTION, a.getSection());

                state.setAttribute(NEW_ASSIGNMENT_SUBMISSION_TYPE,
                        Integer.valueOf(a.getContent().getTypeOfSubmission()));
                state.setAttribute(NEW_ASSIGNMENT_CATEGORY, getAssignmentCategoryAsInt(a));
                int typeOfGrade = a.getContent().getTypeOfGrade();
                state.setAttribute(NEW_ASSIGNMENT_GRADE_TYPE, Integer.valueOf(typeOfGrade));
                if (typeOfGrade == 3) {
                    state.setAttribute(NEW_ASSIGNMENT_GRADE_POINTS, a.getContent().getMaxGradePointDisplay());
                }
                state.setAttribute(NEW_ASSIGNMENT_DESCRIPTION, a.getContent().getInstructions());
                state.setAttribute(NEW_ASSIGNMENT_CHECK_HIDE_DUE_DATE,
                        Boolean.valueOf(a.getContent().getHideDueDate()).toString());
                ResourceProperties properties = a.getProperties();
                state.setAttribute(ResourceProperties.NEW_ASSIGNMENT_CHECK_ADD_DUE_DATE,
                        properties.getProperty(ResourceProperties.NEW_ASSIGNMENT_CHECK_ADD_DUE_DATE));

                state.setAttribute(ResourceProperties.NEW_ASSIGNMENT_CHECK_AUTO_ANNOUNCE,
                        properties.getProperty(ResourceProperties.NEW_ASSIGNMENT_CHECK_AUTO_ANNOUNCE));

                String defaultNotification = ServerConfigurationService
                        .getString("announcement.default.notification", "n");
                if (defaultNotification.equalsIgnoreCase("r")) {
                    state.setAttribute(Assignment.ASSIGNMENT_OPENDATE_NOTIFICATION,
                            Assignment.ASSIGNMENT_OPENDATE_NOTIFICATION_HIGH);
                } else if (defaultNotification.equalsIgnoreCase("o")) {
                    state.setAttribute(Assignment.ASSIGNMENT_OPENDATE_NOTIFICATION,
                            Assignment.ASSIGNMENT_OPENDATE_NOTIFICATION_LOW);
                } else {
                    state.setAttribute(Assignment.ASSIGNMENT_OPENDATE_NOTIFICATION,
                            Assignment.ASSIGNMENT_OPENDATE_NOTIFICATION_NONE);
                }

                state.setAttribute(NEW_ASSIGNMENT_CHECK_ADD_HONOR_PLEDGE,
                        Integer.toString(a.getContent().getHonorPledge()));

                state.setAttribute(AssignmentService.NEW_ASSIGNMENT_ADD_TO_GRADEBOOK,
                        properties.getProperty(AssignmentService.NEW_ASSIGNMENT_ADD_TO_GRADEBOOK));
                state.setAttribute(AssignmentService.PROP_ASSIGNMENT_ASSOCIATE_GRADEBOOK_ASSIGNMENT,
                        properties.getProperty(AssignmentService.PROP_ASSIGNMENT_ASSOCIATE_GRADEBOOK_ASSIGNMENT));

                state.setAttribute(ATTACHMENTS, a.getContent().getAttachments());

                // submission notification option
                if (properties.getProperty(Assignment.ASSIGNMENT_INSTRUCTOR_NOTIFICATIONS_VALUE) != null) {
                    state.setAttribute(Assignment.ASSIGNMENT_INSTRUCTOR_NOTIFICATIONS_VALUE,
                            properties.getProperty(Assignment.ASSIGNMENT_INSTRUCTOR_NOTIFICATIONS_VALUE));
                }
                // release grade notification option
                if (properties.getProperty(Assignment.ASSIGNMENT_RELEASEGRADE_NOTIFICATION_VALUE) != null) {
                    state.setAttribute(Assignment.ASSIGNMENT_RELEASEGRADE_NOTIFICATION_VALUE,
                            properties.getProperty(Assignment.ASSIGNMENT_RELEASEGRADE_NOTIFICATION_VALUE));
                }

                // group setting
                if (a.getAccess().equals(Assignment.AssignmentAccess.SITE)) {
                    state.setAttribute(NEW_ASSIGNMENT_RANGE, "site");
                } else {
                    state.setAttribute(NEW_ASSIGNMENT_RANGE, "groups");
                }

                // SAK-17606
                state.setAttribute(NEW_ASSIGNMENT_CHECK_ANONYMOUS_GRADING,
                        properties.getProperty(NEW_ASSIGNMENT_CHECK_ANONYMOUS_GRADING));

                // put the resubmission option into state
                assignment_resubmission_option_into_state(a, null, state);

                // set whether we use peer assessment or not
                Time peerAssessmentPeriod = a.getPeerAssessmentPeriod();
                //check if peer assessment time exist? if not, this could be an old assignment, so just set it
                //to 10 min after accept until date
                if (peerAssessmentPeriod == null && a.getCloseTime() != null) {
                    // set the peer period time to be 10 mins after accept until date
                    GregorianCalendar c = new GregorianCalendar();
                    c.setTimeInMillis(a.getCloseTime().getTime());
                    c.add(GregorianCalendar.MINUTE, 10);
                    peerAssessmentPeriod = TimeService.newTime(c.getTimeInMillis());
                }
                if (peerAssessmentPeriod != null) {
                    state.setAttribute(NEW_ASSIGNMENT_USE_PEER_ASSESSMENT,
                            Boolean.valueOf(a.getAllowPeerAssessment()).toString());
                    putTimePropertiesInState(state, peerAssessmentPeriod, NEW_ASSIGNMENT_PEERPERIODMONTH,
                            NEW_ASSIGNMENT_PEERPERIODDAY, NEW_ASSIGNMENT_PEERPERIODYEAR,
                            NEW_ASSIGNMENT_PEERPERIODHOUR, NEW_ASSIGNMENT_PEERPERIODMIN);
                    state.setAttribute(NEW_ASSIGNMENT_PEER_ASSESSMENT_ANON_EVAL,
                            Boolean.valueOf(a.getPeerAssessmentAnonEval()).toString());
                    state.setAttribute(NEW_ASSIGNMENT_PEER_ASSESSMENT_STUDENT_VIEW_REVIEWS,
                            Boolean.valueOf(a.getPeerAssessmentStudentViewReviews()).toString());
                    state.setAttribute(NEW_ASSIGNMENT_PEER_ASSESSMENT_NUM_REVIEWS, a.getPeerAssessmentNumReviews());
                    state.setAttribute(NEW_ASSIGNMENT_PEER_ASSESSMENT_INSTRUCTIONS,
                            a.getPeerAssessmentInstructions());
                }
                if (!allowPeerAssessment) {
                    state.setAttribute(NEW_ASSIGNMENT_USE_PEER_ASSESSMENT, false);
                }
                // set whether we use the review service or not
                state.setAttribute(NEW_ASSIGNMENT_USE_REVIEW_SERVICE,
                        Boolean.valueOf(a.getContent().getAllowReviewService()).toString());

                //set whether students can view the review service results
                state.setAttribute(NEW_ASSIGNMENT_ALLOW_STUDENT_VIEW,
                        Boolean.valueOf(a.getContent().getAllowStudentViewReport()).toString());

                state.setAttribute(NEW_ASSIGNMENT_REVIEW_SERVICE_SUBMIT_RADIO,
                        a.getContent().getSubmitReviewRepo());
                state.setAttribute(NEW_ASSIGNMENT_REVIEW_SERVICE_REPORT_RADIO,
                        a.getContent().getGenerateOriginalityReport());
                state.setAttribute(NEW_ASSIGNMENT_REVIEW_SERVICE_CHECK_TURNITIN,
                        Boolean.valueOf(a.getContent().isCheckTurnitin()).toString());
                state.setAttribute(NEW_ASSIGNMENT_REVIEW_SERVICE_CHECK_INTERNET,
                        Boolean.valueOf(a.getContent().isCheckInternet()).toString());
                state.setAttribute(NEW_ASSIGNMENT_REVIEW_SERVICE_CHECK_PUB,
                        Boolean.valueOf(a.getContent().isCheckPublications()).toString());
                state.setAttribute(NEW_ASSIGNMENT_REVIEW_SERVICE_CHECK_INSTITUTION,
                        Boolean.valueOf(a.getContent().isCheckInstitution()).toString());
                //exclude bibliographic
                state.setAttribute(NEW_ASSIGNMENT_REVIEW_SERVICE_EXCLUDE_BIBLIOGRAPHIC,
                        Boolean.valueOf(a.getContent().isExcludeBibliographic()).toString());
                //exclude quoted
                state.setAttribute(NEW_ASSIGNMENT_REVIEW_SERVICE_EXCLUDE_QUOTED,
                        Boolean.valueOf(a.getContent().isExcludeQuoted()).toString());
                //exclude type
                state.setAttribute(NEW_ASSIGNMENT_REVIEW_SERVICE_EXCLUDE_TYPE, a.getContent().getExcludeType());
                //exclude value
                state.setAttribute(NEW_ASSIGNMENT_REVIEW_SERVICE_EXCLUDE_VALUE, a.getContent().getExcludeValue());

                state.setAttribute(NEW_ASSIGNMENT_GROUPS, a.getGroups());

                state.setAttribute(NEW_ASSIGNMENT_GROUP_SUBMIT, a.isGroup() ? "1" : "0");

                // get all supplement item info into state
                setAssignmentSupplementItemInState(state, a);

                state.setAttribute(STATE_MODE, MODE_INSTRUCTOR_NEW_EDIT_ASSIGNMENT);
            }
        } else {
            addAlert(state, rb.getString("youarenot6"));
        }

    } // doEdit_Assignment

    public List<String> getSubmissionRepositoryOptions() {
        List<String> submissionRepoSettings = new ArrayList<String>();
        String[] propertyValues = ServerConfigurationService.getStrings("turnitin.repository.setting");
        if (propertyValues != null && propertyValues.length > 0) {
            for (int i = 0; i < propertyValues.length; i++) {
                String propertyVal = propertyValues[i];
                if (propertyVal.equals(NEW_ASSIGNMENT_REVIEW_SERVICE_SUBMIT_NONE)
                        || propertyVal.equals(NEW_ASSIGNMENT_REVIEW_SERVICE_SUBMIT_INSITUTION)
                        || propertyVal.equals(NEW_ASSIGNMENT_REVIEW_SERVICE_SUBMIT_STANDARD)) {
                    submissionRepoSettings.add(propertyVal);
                }
            }
        }

        // if there are still no valid settings in the list at this point, use the default
        if (submissionRepoSettings.isEmpty()) {
            // add all three
            submissionRepoSettings.add(NEW_ASSIGNMENT_REVIEW_SERVICE_SUBMIT_NONE);
            submissionRepoSettings.add(NEW_ASSIGNMENT_REVIEW_SERVICE_SUBMIT_STANDARD);
        }

        return submissionRepoSettings;
    }

    public List<String> getReportGenOptions() {
        List<String> reportGenSettings = new ArrayList<String>();
        String[] propertyValues = ServerConfigurationService.getStrings("turnitin.report_gen_speed.setting");
        if (propertyValues != null && propertyValues.length > 0) {
            for (int i = 0; i < propertyValues.length; i++) {
                String propertyVal = propertyValues[i];
                if (propertyVal.equals(NEW_ASSIGNMENT_REVIEW_SERVICE_REPORT_DUE)
                        || propertyVal.equals(NEW_ASSIGNMENT_REVIEW_SERVICE_REPORT_IMMEDIATELY)) {
                    reportGenSettings.add(propertyVal);
                }
            }
        }

        // if there are still no valid settings in the list at this point, use the default
        if (reportGenSettings.isEmpty()) {
            // add all three
            reportGenSettings.add(NEW_ASSIGNMENT_REVIEW_SERVICE_REPORT_DUE);
            reportGenSettings.add(NEW_ASSIGNMENT_REVIEW_SERVICE_REPORT_IMMEDIATELY);
        }

        return reportGenSettings;
    }

    /**
     * put all assignment supplement item info into state
     * @param state
     * @param a
     */
    private void setAssignmentSupplementItemInState(SessionState state, Assignment a) {

        String assignmentId = a.getId();

        // model answer
        AssignmentModelAnswerItem mAnswer = m_assignmentSupplementItemService.getModelAnswer(assignmentId);
        if (mAnswer != null) {
            if (state.getAttribute(MODELANSWER_TEXT) == null) {
                state.setAttribute(MODELANSWER_TEXT, mAnswer.getText());
            }
            if (state.getAttribute(MODELANSWER_SHOWTO) == null) {
                state.setAttribute(MODELANSWER_SHOWTO, String.valueOf(mAnswer.getShowTo()));
            }
            if (state.getAttribute(MODELANSWER) == null) {
                state.setAttribute(MODELANSWER, Boolean.TRUE);
            }
        }

        // get attachments for model answer object
        putSupplementItemAttachmentInfoIntoState(state, mAnswer, MODELANSWER_ATTACHMENTS);

        // private notes
        AssignmentNoteItem mNote = m_assignmentSupplementItemService.getNoteItem(assignmentId);
        if (mNote != null) {
            if (state.getAttribute(NOTE) == null) {
                state.setAttribute(NOTE, Boolean.TRUE);
            }
            if (state.getAttribute(NOTE_TEXT) == null) {
                state.setAttribute(NOTE_TEXT, mNote.getNote());
            }
            if (state.getAttribute(NOTE_SHAREWITH) == null) {
                state.setAttribute(NOTE_SHAREWITH, String.valueOf(mNote.getShareWith()));
            }
        }

        // all purpose item
        AssignmentAllPurposeItem aItem = m_assignmentSupplementItemService.getAllPurposeItem(assignmentId);
        if (aItem != null) {
            if (state.getAttribute(ALLPURPOSE) == null) {
                state.setAttribute(ALLPURPOSE, Boolean.TRUE);
            }
            if (state.getAttribute(ALLPURPOSE_TITLE) == null) {
                state.setAttribute(ALLPURPOSE_TITLE, aItem.getTitle());
            }
            if (state.getAttribute(ALLPURPOSE_TEXT) == null) {
                state.setAttribute(ALLPURPOSE_TEXT, aItem.getText());
            }
            if (state.getAttribute(ALLPURPOSE_HIDE) == null) {
                state.setAttribute(ALLPURPOSE_HIDE, Boolean.valueOf(aItem.getHide()));
            }
            if (state.getAttribute(ALLPURPOSE_SHOW_FROM) == null) {
                state.setAttribute(ALLPURPOSE_SHOW_FROM, aItem.getReleaseDate() != null);
            }
            if (state.getAttribute(ALLPURPOSE_SHOW_TO) == null) {
                state.setAttribute(ALLPURPOSE_SHOW_TO, aItem.getRetractDate() != null);
            }
            if (state.getAttribute(ALLPURPOSE_ACCESS) == null) {
                Set<AssignmentAllPurposeItemAccess> aSet = aItem.getAccessSet();
                List<String> aList = new ArrayList<String>();
                for (Iterator<AssignmentAllPurposeItemAccess> aIterator = aSet.iterator(); aIterator.hasNext();) {
                    AssignmentAllPurposeItemAccess access = aIterator.next();
                    aList.add(access.getAccess());
                }
                state.setAttribute(ALLPURPOSE_ACCESS, aList);
            }

            // get attachments for model answer object
            putSupplementItemAttachmentInfoIntoState(state, aItem, ALLPURPOSE_ATTACHMENTS);
        }

        // get the AllPurposeItem and AllPurposeReleaseTime/AllPurposeRetractTime
        //default to assignment open time
        Time releaseTime = a.getOpenTime();
        // default to assignment close time
        Time retractTime = a.getCloseTime();
        if (aItem != null) {
            Date releaseDate = aItem.getReleaseDate();
            if (releaseDate != null) {
                // overwrite if there is a release date
                releaseTime = TimeService.newTime(releaseDate.getTime());
            }

            Date retractDate = aItem.getRetractDate();
            if (retractDate != null) {
                // overwriteif there is a retract date
                retractTime = TimeService.newTime(retractDate.getTime());
            }
        }
        putTimePropertiesInState(state, releaseTime, ALLPURPOSE_RELEASE_MONTH, ALLPURPOSE_RELEASE_DAY,
                ALLPURPOSE_RELEASE_YEAR, ALLPURPOSE_RELEASE_HOUR, ALLPURPOSE_RELEASE_MIN);

        putTimePropertiesInState(state, retractTime, ALLPURPOSE_RETRACT_MONTH, ALLPURPOSE_RETRACT_DAY,
                ALLPURPOSE_RETRACT_YEAR, ALLPURPOSE_RETRACT_HOUR, ALLPURPOSE_RETRACT_MIN);
    }

    /**
     * Action is to show the delete assigment confirmation screen
     */
    public void doDelete_confirm_assignment(RunData data) {
        if (!"POST".equals(data.getRequest().getMethod())) {
            return;
        }

        SessionState state = ((JetspeedRunData) data).getPortletSessionState(((JetspeedRunData) data).getJs_peid());
        ParameterParser params = data.getParameters();

        String[] assignmentIds = params.getStrings("selectedAssignments");

        if (assignmentIds != null) {
            List ids = new ArrayList();
            for (int i = 0; i < assignmentIds.length; i++) {
                String id = (String) assignmentIds[i];
                if (!AssignmentService.allowRemoveAssignment(id)) {
                    addAlert(state, rb.getFormattedMessage("youarenot_removeAssignment", new Object[] { id }));
                }
                ids.add(id);
            }

            if (state.getAttribute(STATE_MESSAGE) == null) {
                // can remove all the selected assignments
                state.setAttribute(DELETE_ASSIGNMENT_IDS, ids);
                state.setAttribute(STATE_MODE, MODE_INSTRUCTOR_DELETE_ASSIGNMENT);
            }
        } else {
            addAlert(state, rb.getString("youmust6"));
        }

    } // doDelete_confirm_Assignment

    /**
     * Action is to delete the confirmed assignments
     */
    public void doDelete_assignment(RunData data) {
        if (!"POST".equals(data.getRequest().getMethod())) {
            return;
        }

        SessionState state = ((JetspeedRunData) data).getPortletSessionState(((JetspeedRunData) data).getJs_peid());

        // get the delete assignment ids
        List ids = (List) state.getAttribute(DELETE_ASSIGNMENT_IDS);
        for (int i = 0; i < ids.size(); i++) {

            String assignmentId = (String) ids.get(i);
            AssignmentEdit aEdit = editAssignment(assignmentId, "doDelete_assignment", state, false);
            if (aEdit != null) {
                ResourcePropertiesEdit pEdit = aEdit.getPropertiesEdit();

                String associateGradebookAssignment = pEdit
                        .getProperty(AssignmentService.PROP_ASSIGNMENT_ASSOCIATE_GRADEBOOK_ASSIGNMENT);

                String title = aEdit.getTitle();

                // remove related event if there is one
                removeCalendarEvent(state, aEdit, pEdit, title);

                // remove related announcement if there is one
                removeAnnouncement(state, pEdit);

                // remove from Gradebook
                integrateGradebook(state, (String) ids.get(i), associateGradebookAssignment, "remove", null, null,
                        -1, null, null, null, -1);

                // we use to check "assignment.delete.cascade.submission" setting. But the implementation now is always remove submission objects when the assignment is removed.
                // delete assignment and its submissions altogether
                deleteAssignmentObjects(state, aEdit, true);
            }
        } // for

        if (state.getAttribute(STATE_MESSAGE) == null) {
            state.setAttribute(DELETE_ASSIGNMENT_IDS, new ArrayList());

            state.setAttribute(STATE_MODE, MODE_LIST_ASSIGNMENTS);

            // reset paging information after the assignment been deleted
            resetPaging(state);
        }

    } // doDelete_Assignment

    /**
     * private function to remove assignment related announcement
     * @param state
     * @param pEdit
     */
    private void removeAnnouncement(SessionState state, ResourcePropertiesEdit pEdit) {
        AnnouncementChannel channel = (AnnouncementChannel) state.getAttribute(ANNOUNCEMENT_CHANNEL);
        if (channel != null) {
            String openDateAnnounced = StringUtils
                    .trimToNull(pEdit.getProperty(NEW_ASSIGNMENT_OPEN_DATE_ANNOUNCED));
            String openDateAnnouncementId = StringUtils.trimToNull(
                    pEdit.getProperty(ResourceProperties.PROP_ASSIGNMENT_OPENDATE_ANNOUNCEMENT_MESSAGE_ID));
            if (openDateAnnounced != null && openDateAnnouncementId != null) {
                try {
                    channel.removeMessage(openDateAnnouncementId);
                } catch (PermissionException e) {
                    M_log.warn(this + ":removeAnnouncement " + e.getMessage());
                }
            }
        }
    }

    /**
     * private method to remove assignment and related objects
     * @param state
     * @param aEdit
     * @param removeSubmissions Whether or not to remove the submission objects
     */
    private void deleteAssignmentObjects(SessionState state, AssignmentEdit aEdit, boolean removeSubmissions) {

        if (removeSubmissions) {
            // if this is non-electronic submission, remove all the submissions
            List submissions = AssignmentService.getSubmissions(aEdit);
            if (submissions != null) {
                for (Iterator sIterator = submissions.iterator(); sIterator.hasNext();) {
                    AssignmentSubmission s = (AssignmentSubmission) sIterator.next();
                    AssignmentSubmissionEdit sEdit = editSubmission((s.getReference()), "deleteAssignmentObjects",
                            state);
                    try {
                        AssignmentService.removeSubmission(sEdit);
                    } catch (Exception eee) {
                        // Trapping for InUseException... go ahead and remove them.
                        if (!(eee instanceof InUseException)) {
                            addAlert(state, rb.getFormattedMessage("youarenot_removeSubmission",
                                    new Object[] { s.getReference() }));
                            M_log.warn(
                                    this + ":deleteAssignmentObjects " + eee.getMessage() + " " + s.getReference());
                        }
                    }
                }
            }
        }

        AssignmentContent aContent = aEdit.getContent();
        if (aContent != null) {
            try {

                // remove the assignment content
                AssignmentContentEdit acEdit = editAssignmentContent(aContent.getReference(),
                        "deleteAssignmentObjects", state, false);
                if (acEdit != null)
                    AssignmentService.removeAssignmentContent(acEdit);
            } catch (Exception ee) {
                addAlert(state, rb.getString("youarenot11_c") + " " + aEdit.getContentReference() + ". ");
                M_log.warn(this + ":deleteAssignmentObjects " + ee.getMessage());
            }
        }

        try {
            TaggingManager taggingManager = (TaggingManager) ComponentManager
                    .get("org.sakaiproject.taggable.api.TaggingManager");

            AssignmentActivityProducer assignmentActivityProducer = (AssignmentActivityProducer) ComponentManager
                    .get("org.sakaiproject.assignment.taggable.api.AssignmentActivityProducer");

            if (taggingManager.isTaggable()) {
                for (TaggingProvider provider : taggingManager.getProviders()) {
                    provider.removeTags(assignmentActivityProducer.getActivity(aEdit));
                }
            }

            AssignmentService.removeAssignment(aEdit);
        } catch (PermissionException ee) {
            addAlert(state, rb.getString("youarenot11") + " " + aEdit.getTitle() + ". ");
            M_log.warn(this + ":deleteAssignmentObjects " + ee.getMessage());
        }
    }

    private void removeCalendarEvent(SessionState state, AssignmentEdit aEdit, ResourcePropertiesEdit pEdit,
            String title) {
        String isThereEvent = pEdit.getProperty(NEW_ASSIGNMENT_DUE_DATE_SCHEDULED);
        if (isThereEvent != null && isThereEvent.equals(Boolean.TRUE.toString())) {
            // remove the associated calendar event
            Calendar c = (Calendar) state.getAttribute(CALENDAR);
            removeCalendarEventFromCalendar(state, aEdit, pEdit, title, c,
                    ResourceProperties.PROP_ASSIGNMENT_DUEDATE_CALENDAR_EVENT_ID);

            // remove the associated event from the additional calendar
            Calendar additionalCalendar = (Calendar) state.getAttribute(ADDITIONAL_CALENDAR);
            removeCalendarEventFromCalendar(state, aEdit, pEdit, title, additionalCalendar,
                    ResourceProperties.PROP_ASSIGNMENT_DUEDATE_ADDITIONAL_CALENDAR_EVENT_ID);

        }
    }

    // Retrieves the calendar event associated with the due date and removes it from the calendar.
    private void removeCalendarEventFromCalendar(SessionState state, AssignmentEdit aEdit,
            ResourcePropertiesEdit pEdit, String title, Calendar c, String dueDateProperty) {
        if (c != null) {
            // already has calendar object
            // get the old event
            CalendarEvent e = null;
            boolean found = false;
            String oldEventId = pEdit.getProperty(dueDateProperty);
            if (oldEventId != null) {
                try {
                    e = c.getEvent(oldEventId);
                    found = true;
                } catch (IdUnusedException ee) {
                    // no action needed for this condition
                    M_log.warn(this + ":removeCalendarEventFromCalendar " + ee.getMessage());
                } catch (PermissionException ee) {
                    M_log.warn(this + ":removeCalendarEventFromCalendar " + ee.getMessage());
                }
            } else {
                TimeBreakdown b = aEdit.getDueTime().breakdownLocal();
                // TODO: check- this was new Time(year...), not local! -ggolden
                Time startTime = TimeService.newTimeLocal(b.getYear(), b.getMonth(), b.getDay(), 0, 0, 0, 0);
                Time endTime = TimeService.newTimeLocal(b.getYear(), b.getMonth(), b.getDay(), 23, 59, 59, 999);
                try {
                    Iterator events = c.getEvents(TimeService.newTimeRange(startTime, endTime), null).iterator();
                    while ((!found) && (events.hasNext())) {
                        e = (CalendarEvent) events.next();
                        if (((String) e.getDisplayName()).indexOf(rb.getString("gen.assig") + " " + title) != -1) {
                            found = true;
                        }
                    }
                } catch (PermissionException pException) {
                    addAlert(state, rb.getFormattedMessage("cannot_getEvents", new Object[] { c.getReference() }));
                }
            }
            // remove the found old event
            if (found) {
                // found the old event delete it
                removeOldEvent(title, c, e);
                pEdit.removeProperty(NEW_ASSIGNMENT_DUE_DATE_SCHEDULED);
                pEdit.removeProperty(dueDateProperty);
            }
        }
    }

    /**
     * Action is to delete the assignment and also the related AssignmentSubmission
     */
    public void doDeep_delete_assignment(RunData data) {
        if (!"POST".equals(data.getRequest().getMethod())) {
            return;
        }

        SessionState state = ((JetspeedRunData) data).getPortletSessionState(((JetspeedRunData) data).getJs_peid());

        // get the delete assignment ids
        List ids = (List) state.getAttribute(DELETE_ASSIGNMENT_IDS);
        for (int i = 0; i < ids.size(); i++) {
            String currentId = (String) ids.get(i);
            AssignmentEdit a = editAssignment(currentId, "doDeep_delete_assignment", state, false);
            if (a != null) {
                try {
                    TaggingManager taggingManager = (TaggingManager) ComponentManager
                            .get("org.sakaiproject.taggable.api.TaggingManager");

                    AssignmentActivityProducer assignmentActivityProducer = (AssignmentActivityProducer) ComponentManager
                            .get("org.sakaiproject.assignment.taggable.api.AssignmentActivityProducer");

                    if (taggingManager.isTaggable()) {
                        for (TaggingProvider provider : taggingManager.getProviders()) {
                            provider.removeTags(assignmentActivityProducer.getActivity(a));
                        }
                    }

                    AssignmentService.removeAssignment(a);
                } catch (PermissionException e) {
                    addAlert(state,
                            rb.getFormattedMessage("youarenot_editAssignment", new Object[] { a.getTitle() }));
                    M_log.warn(this + ":doDeep_delete_assignment " + e.getMessage());
                }
            }
        }
        if (state.getAttribute(STATE_MESSAGE) == null) {
            state.setAttribute(DELETE_ASSIGNMENT_IDS, new ArrayList());
            state.setAttribute(STATE_MODE, MODE_LIST_ASSIGNMENTS);
        }

    } // doDeep_delete_Assignment

    /**
     * Action is to show the duplicate assignment screen
     */
    public void doDuplicate_assignment(RunData data) {
        if (!"POST".equals(data.getRequest().getMethod())) {
            return;
        }
        SessionState state = ((JetspeedRunData) data).getPortletSessionState(((JetspeedRunData) data).getJs_peid());

        // we are changing the view, so start with first page again.
        resetPaging(state);

        String contextString = (String) state.getAttribute(STATE_CONTEXT_STRING);
        ParameterParser params = data.getParameters();
        String assignmentId = StringUtils.trimToNull(params.getString("assignmentId"));

        if (assignmentId != null) {
            try {
                AssignmentEdit aEdit = AssignmentService.addDuplicateAssignment(contextString, assignmentId);

                // clean the duplicate's property
                ResourcePropertiesEdit aPropertiesEdit = aEdit.getPropertiesEdit();
                aPropertiesEdit.removeProperty(NEW_ASSIGNMENT_DUE_DATE_SCHEDULED);
                aPropertiesEdit.removeProperty(ResourceProperties.PROP_ASSIGNMENT_DUEDATE_CALENDAR_EVENT_ID);
                aPropertiesEdit
                        .removeProperty(ResourceProperties.PROP_ASSIGNMENT_DUEDATE_ADDITIONAL_CALENDAR_EVENT_ID);
                aPropertiesEdit.removeProperty(NEW_ASSIGNMENT_OPEN_DATE_ANNOUNCED);
                aPropertiesEdit.removeProperty(ResourceProperties.PROP_ASSIGNMENT_OPENDATE_ANNOUNCEMENT_MESSAGE_ID);
                aPropertiesEdit.removeProperty(NEW_ASSIGNMENT_ADD_TO_GRADEBOOK);
                aPropertiesEdit.removeProperty(AssignmentService.PROP_ASSIGNMENT_ASSOCIATE_GRADEBOOK_ASSIGNMENT);

                AssignmentService.commitEdit(aEdit);
            } catch (PermissionException e) {
                addAlert(state, rb.getString("youarenot5"));
                M_log.warn(this + ":doDuplicate_assignment " + e.getMessage());
            } catch (IdInvalidException e) {
                addAlert(state, rb.getFormattedMessage("theassiid_isnotval", new Object[] { assignmentId }));
                M_log.warn(this + ":doDuplicate_assignment " + e.getMessage());
            } catch (IdUnusedException e) {
                addAlert(state, rb.getFormattedMessage("theassiid_hasnotbee", new Object[] { assignmentId }));
                M_log.warn(this + ":doDuplicate_assignment " + e.getMessage());
            } catch (Exception e) {
                M_log.warn(this + ":doDuplicate_assignment " + e.getMessage());
            }

        }

    } // doDuplicate_Assignment

    /**
     * Action is to show the grade submission screen
     */
    public void doGrade_submission(RunData data) {
        SessionState state = ((JetspeedRunData) data).getPortletSessionState(((JetspeedRunData) data).getJs_peid());

        // reset the submission context
        resetViewSubmission(state);

        ParameterParser params = data.getParameters();
        String assignmentId = params.getString("assignmentId");
        String submissionId = params.getString("submissionId");

        // SAK-29314 - put submission information into state
        boolean viewSubsOnlySelected = stringToBool(
                (String) data.getParameters().getString(PARAMS_VIEW_SUBS_ONLY_CHECKBOX));
        putSubmissionInfoIntoState(state, assignmentId, submissionId, viewSubsOnlySelected);

        if (state.getAttribute(STATE_MESSAGE) == null) {
            state.setAttribute(GRADE_SUBMISSION_ASSIGNMENT_EXPAND_FLAG, Boolean.valueOf(false));
            state.setAttribute(STATE_MODE, MODE_INSTRUCTOR_GRADE_SUBMISSION);
            state.setAttribute(FROM_VIEW, (String) params.getString("option"));
            // assignment read event
            m_eventTrackingService.post(m_eventTrackingService
                    .newEvent(AssignmentConstants.EVENT_ACCESS_ASSIGNMENT_SUBMISSION, submissionId, false));
        }
    } // doGrade_submission

    /**
     * put all the submission information into state variables
     * @param state
     * @param assignmentId
     * @param submissionId
     * @param viewSubsOnlySelected
     */
    private void putSubmissionInfoIntoState(SessionState state, String assignmentId, String submissionId,
            boolean viewSubsOnlySelected) {
        // reset grading submission variables
        resetGradeSubmission(state);

        // reset the grade assignment id and submission id
        state.setAttribute(GRADE_SUBMISSION_ASSIGNMENT_ID, assignmentId);
        state.setAttribute(GRADE_SUBMISSION_SUBMISSION_ID, submissionId);

        // SAK-29314
        state.setAttribute(STATE_VIEW_SUBS_ONLY, viewSubsOnlySelected);

        // allow resubmit number
        String allowResubmitNumber = "0";
        Assignment a = getAssignment(assignmentId, "putSubmissionInfoIntoState", state);
        if (a != null) {
            AssignmentSubmission s = getSubmission(submissionId, "putSubmissionInfoIntoState", state);
            if (s != null) {
                state.setAttribute(GRADE_SUBMISSION_FEEDBACK_TEXT, s.getSubmittedText());

                if ((s.getFeedbackText() == null) || (s.getFeedbackText().length() == 0)) {
                    state.setAttribute(GRADE_SUBMISSION_FEEDBACK_TEXT, s.getSubmittedText());
                } else {
                    state.setAttribute(GRADE_SUBMISSION_FEEDBACK_TEXT, s.getFeedbackText());
                }

                state.setAttribute(GRADE_SUBMISSION_FEEDBACK_COMMENT, s.getFeedbackComment());

                List v = EntityManager.newReferenceList();
                Iterator attachments = s.getFeedbackAttachments().iterator();
                while (attachments.hasNext()) {
                    v.add(attachments.next());
                }
                state.setAttribute(GRADE_SUBMISSION_FEEDBACK_ATTACHMENT, v);
                state.setAttribute(ATTACHMENTS, v);

                state.setAttribute(GRADE_SUBMISSION_GRADE, s.getGrade());

                // populate grade overrides if they exist
                if (a.isGroup()) {
                    User[] _users = s.getSubmitters();
                    for (int i = 0; _users != null && i < _users.length; i++) {
                        if (s.getGradeForUser(_users[i].getId()) != null) {
                            state.setAttribute(GRADE_SUBMISSION_GRADE + "_" + _users[i].getId(),
                                    s.getGradeForUser(_users[i].getId()));
                        }
                    }
                }

                // put the resubmission info into state
                assignment_resubmission_option_into_state(a, s, state);
            }
        }
    }

    /**
     * Action is to release all the grades of the submission
     */
    public void doRelease_grades(RunData data) {
        if (!"POST".equals(data.getRequest().getMethod())) {
            return;
        }

        SessionState state = ((JetspeedRunData) data).getPortletSessionState(((JetspeedRunData) data).getJs_peid());

        ParameterParser params = data.getParameters();

        String assignmentId = params.getString("assignmentId");

        // get the assignment
        Assignment a = getAssignment(assignmentId, "doRelease_grades", state);

        if (a != null) {
            String aReference = a.getReference();

            Iterator submissions = getFilteredSubmitters(state, aReference).iterator();
            while (submissions.hasNext()) {
                AssignmentSubmission s = (AssignmentSubmission) submissions.next();
                if (s.getGraded() || (s.getGrade() != null && !"".equals(s.getGrade()))) {
                    String sRef = s.getReference();
                    AssignmentSubmissionEdit sEdit = editSubmission(sRef, "doRelease_grades", state);
                    if (sEdit != null) {
                        String grade = s.getGrade();

                        boolean withGrade = state.getAttribute(WITH_GRADES) != null
                                ? ((Boolean) state.getAttribute(WITH_GRADES)).booleanValue()
                                : false;
                        if (withGrade) {
                            // for the assignment tool with grade option, a valide grade is needed
                            if (grade != null && !"".equals(grade)) {
                                sEdit.setGradeReleased(true);
                                if (!s.getGraded()) {
                                    sEdit.setGraded(true);
                                }
                            }
                        } else {
                            // for the assignment tool without grade option, no grade is needed
                            sEdit.setGradeReleased(true);
                        }

                        // also set the return status
                        sEdit.setReturned(true);
                        sEdit.setTimeReturned(TimeService.newTime());
                        sEdit.setHonorPledgeFlag(Boolean.FALSE.booleanValue());

                        AssignmentService.commitEdit(sEdit);
                    }
                }

            } // while

            // add grades into Gradebook
            String integrateWithGradebook = a.getProperties().getProperty(NEW_ASSIGNMENT_ADD_TO_GRADEBOOK);
            if (integrateWithGradebook != null
                    && !integrateWithGradebook.equals(AssignmentService.GRADEBOOK_INTEGRATION_NO)) {
                // integrate with Gradebook
                String associateGradebookAssignment = StringUtils.trimToNull(a.getProperties()
                        .getProperty(AssignmentService.PROP_ASSIGNMENT_ASSOCIATE_GRADEBOOK_ASSIGNMENT));

                integrateGradebook(state, aReference, associateGradebookAssignment, null, null, null, -1, null,
                        null, "update", -1);
            }
        }

    } // doRelease_grades

    /**
     * Action is to show the assignment in grading page
     */
    public void doExpand_grade_assignment(RunData data) {
        SessionState state = ((JetspeedRunData) data).getPortletSessionState(((JetspeedRunData) data).getJs_peid());
        state.setAttribute(GRADE_ASSIGNMENT_EXPAND_FLAG, Boolean.valueOf(true));

    } // doExpand_grade_assignment

    /**
     * Action is to hide the assignment in grading page
     */
    public void doCollapse_grade_assignment(RunData data) {
        SessionState state = ((JetspeedRunData) data).getPortletSessionState(((JetspeedRunData) data).getJs_peid());
        state.setAttribute(GRADE_ASSIGNMENT_EXPAND_FLAG, Boolean.valueOf(false));

    } // doCollapse_grade_assignment

    /**
     * Action is to show the submissions in grading page
     */
    public void doExpand_grade_submission(RunData data) {
        SessionState state = ((JetspeedRunData) data).getPortletSessionState(((JetspeedRunData) data).getJs_peid());
        state.setAttribute(GRADE_SUBMISSION_EXPAND_FLAG, Boolean.valueOf(true));

    } // doExpand_grade_submission

    /**
     * Action is to hide the submissions in grading page
     */
    public void doCollapse_grade_submission(RunData data) {
        SessionState state = ((JetspeedRunData) data).getPortletSessionState(((JetspeedRunData) data).getJs_peid());
        state.setAttribute(GRADE_SUBMISSION_EXPAND_FLAG, Boolean.valueOf(false));

    } // doCollapse_grade_submission

    /**
     * Action is to show the grade assignment
     */
    public void doGrade_assignment(RunData data) {
        SessionState state = ((JetspeedRunData) data).getPortletSessionState(((JetspeedRunData) data).getJs_peid());
        ParameterParser params = data.getParameters();

        // clean state attribute
        state.removeAttribute(USER_SUBMISSIONS);
        state.removeAttribute(SAVED_FEEDBACK);
        state.removeAttribute(OW_FEEDBACK);
        state.removeAttribute(RETURNED_FEEDBACK);

        String assignmentId = params.getString("assignmentId");
        state.setAttribute(EXPORT_ASSIGNMENT_REF, assignmentId);

        Assignment a = getAssignment(assignmentId, "doGrade_assignment", state);
        if (a != null) {
            state.setAttribute(EXPORT_ASSIGNMENT_ID, a.getId());
            state.setAttribute(GRADE_ASSIGNMENT_EXPAND_FLAG, Boolean.valueOf(false));
            state.setAttribute(GRADE_SUBMISSION_EXPAND_FLAG, Boolean.valueOf(true));
            state.setAttribute(STATE_MODE, MODE_INSTRUCTOR_GRADE_ASSIGNMENT);

            // initialize the resubmission params
            assignment_resubmission_option_into_state(a, null, state);

            // we are changing the view, so start with first page again.
            resetPaging(state);
        }
    } // doGrade_assignment

    /**
     * Action is to show the View Students assignment screen
     */
    public void doView_students_assignment(RunData data) {
        SessionState state = ((JetspeedRunData) data).getPortletSessionState(((JetspeedRunData) data).getJs_peid());
        state.setAttribute(STATE_MODE, MODE_INSTRUCTOR_VIEW_STUDENTS_ASSIGNMENT);

    } // doView_students_Assignment

    /**
     * Action is to show the student submissions
     */
    public void doShow_student_submission(RunData data) {
        SessionState state = ((JetspeedRunData) data).getPortletSessionState(((JetspeedRunData) data).getJs_peid());
        Set t = (Set) state.getAttribute(STUDENT_LIST_SHOW_TABLE);
        ParameterParser params = data.getParameters();

        String id = params.getString("studentId");
        // add the student id into the table
        t.add(id);

        state.setAttribute(STUDENT_LIST_SHOW_TABLE, t);

    } // doShow_student_submission

    /**
     * Action is to hide the student submissions
     */
    public void doHide_student_submission(RunData data) {
        SessionState state = ((JetspeedRunData) data).getPortletSessionState(((JetspeedRunData) data).getJs_peid());
        Set t = (Set) state.getAttribute(STUDENT_LIST_SHOW_TABLE);
        ParameterParser params = data.getParameters();

        String id = params.getString("studentId");
        // remove the student id from the table
        t.remove(id);

        state.setAttribute(STUDENT_LIST_SHOW_TABLE, t);

    } // doHide_student_submission

    /**
     * Action is to show the graded assignment submission
     */
    public void doView_grade(RunData data) {
        SessionState state = ((JetspeedRunData) data).getPortletSessionState(((JetspeedRunData) data).getJs_peid());

        ParameterParser params = data.getParameters();

        String submissionReference = params.getString("submissionId");

        prepareStudentViewGrade(state, submissionReference);
    } // doView_grade

    /**
     * Prepares the state for the student to view their grade
     */
    private void prepareStudentViewGrade(SessionState state, String submissionReference) {
        state.setAttribute(VIEW_GRADE_SUBMISSION_ID, submissionReference);

        String _mode = MODE_STUDENT_VIEW_GRADE;

        AssignmentSubmission _s = getSubmission((String) state.getAttribute(VIEW_GRADE_SUBMISSION_ID),
                "doView_grade", state);
        // whether the user can access the Submission object
        if (_s != null) {
            String status = _s.getStatus();
            if ("Not Started".equals(status)) {
                addAlert(state, rb.getString("stuviewsubm.theclodat"));
            }

            // show submission view unless group submission with group error
            Assignment a = _s.getAssignment();
            User u = (User) state.getAttribute(STATE_USER);
            if (a.isGroup()) {
                Collection groups = null;
                Site st = null;
                try {
                    st = SiteService.getSite((String) state.getAttribute(STATE_CONTEXT_STRING));
                    groups = getGroupsWithUser(u.getId(), a, st);
                    Collection<String> _dupUsers = checkForGroupsInMultipleGroups(a, groups, state,
                            rb.getString("group.user.multiple.warning"));
                    if (_dupUsers.size() > 0) {
                        _mode = MODE_STUDENT_VIEW_GROUP_ERROR;
                        state.setAttribute(VIEW_SUBMISSION_ASSIGNMENT_REFERENCE, _s.getAssignmentId());
                    }
                } catch (IdUnusedException iue) {
                    M_log.warn(this + ":doView_grade found!" + iue.getMessage());
                }
            }
            state.setAttribute(STATE_MODE, _mode);
        }
    }

    /**
     * Action is to show the graded assignment submission while keeping specific information private
     */
    public void doView_grade_private(RunData data) {
        SessionState state = ((JetspeedRunData) data).getPortletSessionState(((JetspeedRunData) data).getJs_peid());

        ParameterParser params = data.getParameters();

        state.setAttribute(VIEW_GRADE_SUBMISSION_ID, params.getString("submissionId"));

        // whether the user can access the Submission object
        if (getSubmission((String) state.getAttribute(VIEW_GRADE_SUBMISSION_ID), "doView_grade_private",
                state) != null) {
            state.setAttribute(STATE_MODE, MODE_STUDENT_VIEW_GRADE_PRIVATE);
        }

    } // doView_grade_private

    /**
     * Action is to show the student submissions
     */
    public void doReport_submissions(RunData data) {
        SessionState state = ((JetspeedRunData) data).getPortletSessionState(((JetspeedRunData) data).getJs_peid());

        state.setAttribute(STATE_MODE, MODE_INSTRUCTOR_REPORT_SUBMISSIONS);
        state.setAttribute(SORTED_BY, SORTED_SUBMISSION_BY_LASTNAME);
        state.setAttribute(SORTED_ASC, Boolean.TRUE.toString());

    } // doReport_submissions

    /**
     *
     *
     */
    public void doAssignment_form(RunData data) {
        ParameterParser params = data.getParameters();
        //Added by Branden Visser: Grab the submission id from the query string
        SessionState state = ((JetspeedRunData) data).getPortletSessionState(((JetspeedRunData) data).getJs_peid());
        String actualGradeSubmissionId = (String) params.getString("submissionId");

        Log.debug("chef", "doAssignment_form(): actualGradeSubmissionId = " + actualGradeSubmissionId);

        String option = (String) params.getString("option");
        String fromView = (String) state.getAttribute(FROM_VIEW);
        if (option != null) {
            if ("post".equals(option)) {
                // post assignment
                doPost_assignment(data);
            } else if ("save".equals(option)) {
                // save assignment
                doSave_assignment(data);
            } else if ("reorder".equals(option)) {
                // reorder assignments
                doReorder_assignment(data);
            } else if ("preview".equals(option)) {
                // preview assignment
                doPreview_assignment(data);
            } else if ("cancel".equals(option)) {
                // cancel creating assignment
                doCancel_new_assignment(data);
            } else if ("canceledit".equals(option)) {
                // cancel editing assignment
                doCancel_edit_assignment(data);
            } else if ("attach".equals(option)) {
                // attachments
                doAttachmentsFrom(data, null);
            } else if ("modelAnswerAttach".equals(option)) {
                doAttachmentsFrom(data, "modelAnswer");
            } else if ("allPurposeAttach".equals(option)) {
                doAttachmentsFrom(data, "allPurpose");
            } else if ("view".equals(option)) {
                // view
                doView(data);
            } else if ("permissions".equals(option)) {
                // permissions
                doPermissions(data);
            } else if ("new".equals(option)) {
                doNew_assignment(data, null);
            } else if ("returngrade".equals(option)) {
                // return grading
                doReturn_grade_submission(data);
            } else if ("savegrade".equals(option)) {
                // save grading
                doSave_grade_submission(data);
            } else if ("savegrade_review".equals(option)) {
                // save review grading
                doSave_grade_submission_review(data);
            } else if ("submitgrade_review".equals(option)) {
                //we basically need to submit, save, and move the user to the next review (if available)
                if (data.getParameters().get("nextSubmissionId") != null) {
                    //go next
                    doPrev_back_next_submission_review(data, "next", true);
                } else if (data.getParameters().get("prevSubmissionId") != null) {
                    //go previous
                    doPrev_back_next_submission_review(data, "prev", true);
                } else {
                    //go back to the list
                    doPrev_back_next_submission_review(data, "back", true);
                }
            } else if ("toggleremove_review".equals(option)) {
                // save review grading
                doSave_toggle_remove_review(data);
            } else if ("previewgrade".equals(option)) {
                // preview grading
                doPreview_grade_submission(data);
            } else if ("cancelgrade".equals(option)) {
                // cancel grading
                doCancel_grade_submission(data);
            } else if ("cancelgrade_review".equals(option)) {
                // cancel grade review
                // no need to do anything, session will have original values and refresh
            } else if ("cancelreorder".equals(option)) {
                // cancel reordering
                doCancel_reorder(data);
            } else if ("sortbygrouptitle".equals(option)) {
                // read input data
                setNewAssignmentParameters(data, true);

                // sort by group title
                doSortbygrouptitle(data);
            } else if ("sortbygroupdescription".equals(option)) {
                // read input data
                setNewAssignmentParameters(data, true);

                // sort group by description
                doSortbygroupdescription(data);
            } else if ("hide_instruction".equals(option)) {
                // hide the assignment instruction
                doHide_submission_assignment_instruction(data);
            } else if ("hide_instruction_review".equals(option)) {
                // hide the assignment instruction
                doHide_submission_assignment_instruction_review(data);
            } else if ("show_instruction".equals(option)) {
                // show the assignment instruction
                doShow_submission_assignment_instruction(data);
            } else if ("show_instruction_review".equals(option)) {
                // show the assignment instruction
                doShow_submission_assignment_instruction_review(data);
            } else if ("sortbygroupdescription".equals(option)) {
                // show the assignment instruction
                doShow_submission_assignment_instruction(data);
            } else if ("revise".equals(option) || "done".equals(option)) {
                // back from the preview mode
                doDone_preview_new_assignment(data);
            } else if ("prevsubmission".equals(option)) {
                // save and navigate to previous submission
                doPrev_back_next_submission(data, "prev");
            } else if ("nextsubmission".equals(option)) {
                // save and navigate to previous submission
                doPrev_back_next_submission(data, "next");
            } else if (FLAG_NEXT_UNGRADED.equals(option) || FLAG_PREV_UNGRADED.equals(option)) {
                // SAK-29314
                doPrev_back_next_submission(data, option);
            } else if ("prevsubmission_review".equals(option)) {
                // save and navigate to previous submission
                doPrev_back_next_submission_review(data, "prev", false);
            } else if ("nextsubmission_review".equals(option)) {
                // save and navigate to previous submission
                doPrev_back_next_submission_review(data, "next", false);
            } else if ("cancelgradesubmission".equals(option)) {
                if (MODE_INSTRUCTOR_VIEW_STUDENTS_ASSIGNMENT.equals(fromView)) {
                    doPrev_back_next_submission(data, "backListStudent");
                } else {
                    // save and navigate to previous submission
                    doPrev_back_next_submission(data, "back");
                }
            } else if ("cancelgradesubmission_review".equals(option)) {
                // save and navigate to previous submission
                doPrev_back_next_submission_review(data, "back", false);
            } else if ("reorderNavigation".equals(option)) {
                // save and do reorder
                doReorder(data);
            } else if ("options".equals(option)) {
                // go to the options view
                doOptions(data);
            }

        }
    }

    // added by Branden Visser - Check that the state is consistent
    boolean checkSubmissionStateConsistency(SessionState state, String actualGradeSubmissionId) {
        String stateGradeSubmissionId = (String) state.getAttribute(GRADE_SUBMISSION_SUBMISSION_ID);
        Log.debug("chef", "checkSubmissionStateConsistency(): stateGradeSubmissionId = " + stateGradeSubmissionId);
        boolean is_good = stateGradeSubmissionId.equals(actualGradeSubmissionId);
        if (!is_good) {
            Log.warn("chef", "checkSubissionStateConsistency(): State is inconsistent! Aborting grade save.");
            addAlert(state, rb.getString("grading.alert.multiTab"));
        }
        return is_good;
    }

    /**
     * Action is to use when doAattchmentsadding requested, corresponding to chef_Assignments-new "eventSubmit_doAattchmentsadding" when "add attachments" is clicked
     */
    public void doAttachmentsFrom(RunData data, String from) {
        SessionState state = ((JetspeedRunData) data).getPortletSessionState(((JetspeedRunData) data).getJs_peid());
        doAttachments(data);

        // use the real attachment list
        if (state.getAttribute(STATE_MESSAGE) == null) {
            if (from != null && "modelAnswer".equals(from)) {
                state.setAttribute(ATTACHMENTS_FOR, MODELANSWER_ATTACHMENTS);
                state.setAttribute(FilePickerHelper.FILE_PICKER_ATTACHMENTS,
                        state.getAttribute(MODELANSWER_ATTACHMENTS));
                state.setAttribute(MODELANSWER, Boolean.TRUE);
            } else if (from != null && "allPurpose".equals(from)) {
                state.setAttribute(ATTACHMENTS_FOR, ALLPURPOSE_ATTACHMENTS);
                state.setAttribute(FilePickerHelper.FILE_PICKER_ATTACHMENTS,
                        state.getAttribute(ALLPURPOSE_ATTACHMENTS));
                state.setAttribute(ALLPURPOSE, Boolean.TRUE);
            }
        }
    }

    /**
     * put supplement item attachment info into state
     * @param state
     * @param item
     * @param attachmentsKind
     */
    private void putSupplementItemAttachmentInfoIntoState(SessionState state,
            AssignmentSupplementItemWithAttachment item, String attachmentsKind) {
        List refs = new ArrayList();

        if (item != null) {
            // get reference list
            Set<AssignmentSupplementItemAttachment> aSet = item.getAttachmentSet();
            if (aSet != null && aSet.size() > 0) {
                for (Iterator<AssignmentSupplementItemAttachment> aIterator = aSet.iterator(); aIterator
                        .hasNext();) {
                    AssignmentSupplementItemAttachment att = aIterator.next();
                    // add reference
                    refs.add(EntityManager.newReference(att.getAttachmentId()));
                }
                state.setAttribute(attachmentsKind, refs);
            }
        }
    }

    /**
     * put supplement item attachment state attribute value into context
     * @param state
     * @param context
     * @param attachmentsKind
     */
    private void putSupplementItemAttachmentStateIntoContext(SessionState state, Context context,
            String attachmentsKind) {
        List refs = new ArrayList();

        String attachmentsFor = (String) state.getAttribute(ATTACHMENTS_FOR);
        if (attachmentsFor != null && attachmentsFor.equals(attachmentsKind)) {
            ToolSession session = SessionManager.getCurrentToolSession();
            if (session.getAttribute(FilePickerHelper.FILE_PICKER_CANCEL) == null
                    && session.getAttribute(FilePickerHelper.FILE_PICKER_ATTACHMENTS) != null) {
                refs = (List) session.getAttribute(FilePickerHelper.FILE_PICKER_ATTACHMENTS);
                // set the correct state variable
                state.setAttribute(attachmentsKind, refs);
            }
            session.removeAttribute(FilePickerHelper.FILE_PICKER_ATTACHMENTS);
            session.removeAttribute(FilePickerHelper.FILE_PICKER_CANCEL);

            state.removeAttribute(ATTACHMENTS_FOR);
        }

        // show attachments content
        if (state.getAttribute(attachmentsKind) != null) {
            context.put(attachmentsKind, state.getAttribute(attachmentsKind));
        }

        // this is to keep the proper node div open
        context.put("attachments_for", attachmentsKind);
    }

    /**
     * Action is to use when doAattchmentsadding requested, corresponding to chef_Assignments-new "eventSubmit_doAattchmentsadding" when "add attachments" is clicked
     */
    public void doAttachments(RunData data) {
        SessionState state = ((JetspeedRunData) data).getPortletSessionState(((JetspeedRunData) data).getJs_peid());
        ParameterParser params = data.getParameters();

        // determines if the file picker can only add a single attachment
        boolean singleAttachment = false;

        // when content-review is enabled, the inline text will have an associated attachment. It should be omitted from the file picker
        Assignment assignment = null;
        boolean omitInlineAttachments = false;

        String mode = (String) state.getAttribute(STATE_MODE);
        if (MODE_STUDENT_VIEW_SUBMISSION.equals(mode)) {
            // save the current input before leaving the page
            saveSubmitInputs(state, params);

            // Restrict file picker configuration if using content-review (Turnitin):
            String assignmentRef = (String) state.getAttribute(VIEW_SUBMISSION_ASSIGNMENT_REFERENCE);
            try {
                assignment = AssignmentService.getAssignment(assignmentRef);
                if (assignment.getContent().getAllowReviewService()) {
                    state.setAttribute(FilePickerHelper.FILE_PICKER_MAX_ATTACHMENTS,
                            FilePickerHelper.CARDINALITY_MULTIPLE);
                    state.setAttribute(FilePickerHelper.FILE_PICKER_SHOW_URL, Boolean.FALSE);
                }

                if (assignment.getContent().getTypeOfSubmission() == Assignment.SINGLE_ATTACHMENT_SUBMISSION) {
                    singleAttachment = true;
                }
            } catch (IdUnusedException e) {
                addAlert(state, rb.getFormattedMessage("cannotfin_assignment", new Object[] { assignmentRef }));
            } catch (PermissionException e) {
                addAlert(state, rb.getFormattedMessage("youarenot_viewAssignment", new Object[] { assignmentRef }));
            }

            // need also to upload local file if any
            doAttachUpload(data, false);

            // TODO: file picker to save in dropbox? -ggolden
            // User[] users = { UserDirectoryService.getCurrentUser() };
            // state.setAttribute(ResourcesAction.STATE_SAVE_ATTACHMENT_IN_DROPBOX, users);

            // Always omit inline attachments. Even if content-review is not enabled, 
            // this could be a resubmission to an assignment that was previously content-review enabled, 
            // in which case the file will be present and should be omitted.
            omitInlineAttachments = true;
        } else if (MODE_INSTRUCTOR_NEW_EDIT_ASSIGNMENT.equals(mode)) {
            setNewAssignmentParameters(data, false);
        } else if (MODE_INSTRUCTOR_GRADE_SUBMISSION.equals(mode)) {
            readGradeForm(data, state, "read");
        }

        if (state.getAttribute(STATE_MESSAGE) == null) {
            // get into helper mode with this helper tool
            startHelper(data.getRequest(), "sakai.filepicker");

            if (singleAttachment) {
                // SAK-27595 - added a resources file picker for single uploaded file only assignments; we limit it here to accept a maximum of 1 file
                state.setAttribute(FilePickerHelper.FILE_PICKER_MAX_ATTACHMENTS, Integer.valueOf(1));
                state.setAttribute(FilePickerHelper.FILE_PICKER_TITLE_TEXT,
                        rb.getString("gen.addatttoassig.singular"));
            } else {
                state.setAttribute(FilePickerHelper.FILE_PICKER_TITLE_TEXT, rb.getString("gen.addatttoassig"));
            }
            state.setAttribute(FilePickerHelper.FILE_PICKER_INSTRUCTION_TEXT,
                    rb.getString("gen.addatttoassiginstr"));

            // process existing attachments
            List attachments = (List) state.getAttribute(ATTACHMENTS);
            if (singleAttachment && attachments != null && attachments.size() > 1) {
                // multiple attachments -> Single Uploaded File Only
                List newSingleAttachmentList = EntityManager.newReferenceList();
                state.setAttribute("newSingleAttachmentList", newSingleAttachmentList);
                state.setAttribute(FilePickerHelper.FILE_PICKER_ATTACHMENTS, newSingleAttachmentList);
            } else {
                // use the real attachment list
                // but omit the inline submission under conditions determined in the logic above
                if (omitInlineAttachments && assignment != null) {
                    attachments = getNonInlineAttachments(state, assignment);
                    state.setAttribute(ATTACHMENTS, attachments);
                }
                state.setAttribute(FilePickerHelper.FILE_PICKER_ATTACHMENTS, attachments);
            }
        }
    }

    /**
     * saves the current input before navigating off to other pages
     * @param state
     * @param params
     */
    private void saveSubmitInputs(SessionState state, ParameterParser params) {
        // retrieve the submission text (as formatted text)
        boolean checkForFormattingErrors = true; // the student is submitting something - so check for errors
        String text = processFormattedTextFromBrowser(state, params.getCleanString(VIEW_SUBMISSION_TEXT),
                checkForFormattingErrors);

        state.setAttribute(VIEW_SUBMISSION_TEXT, text);
        if (params.getString(VIEW_SUBMISSION_HONOR_PLEDGE_YES) != null) {
            state.setAttribute(VIEW_SUBMISSION_HONOR_PLEDGE_YES, "true");
        }

        String assignmentRef = (String) state.getAttribute(VIEW_SUBMISSION_ASSIGNMENT_REFERENCE);
        try {
            Assignment assignment = AssignmentService.getAssignment(assignmentRef);
            if (assignment.isGroup()) {
                String[] groupChoice = params.getStrings("selectedGroups");
                if (groupChoice != null && groupChoice.length != 0) {
                    if (groupChoice.length > 1) {
                        state.setAttribute(VIEW_SUBMISSION_GROUP, null);
                        addAlert(state, rb.getString("java.alert.youchoosegroup"));
                    } else {
                        state.setAttribute(VIEW_SUBMISSION_GROUP, groupChoice[0]);
                    }
                } else {
                    state.setAttribute(VIEW_SUBMISSION_GROUP, null);
                    addAlert(state, rb.getString("java.alert.youchoosegroup"));
                }
                String original_group_id = params.getString("originalGroup") == null
                        || params.getString("originalGroup").trim().length() == 0 ? null
                                : params.getString("originalGroup");

                if (original_group_id != null) {
                    state.setAttribute(VIEW_SUBMISSION_ORIGINAL_GROUP, original_group_id);
                } else {
                    state.setAttribute(VIEW_SUBMISSION_ORIGINAL_GROUP, null);
                }
            }

        } catch (PermissionException p) {
            M_log.debug(this + " :saveSubmitInputs permission error getting assignment. ");
        } catch (IdUnusedException e) {
        }
    }

    /**
     * read review grade information form and see if any grading information has been changed
     * @param data
     * @param state
     * @param gradeOption
     * @return
     */
    public boolean saveReviewGradeForm(RunData data, SessionState state, String gradeOption) {
        String assessorUserId = UserDirectoryService.getCurrentUser().getId();
        if (state.getAttribute(PEER_ASSESSMENT_ASSESSOR_ID) != null
                && !assessorUserId.equals(state.getAttribute(PEER_ASSESSMENT_ASSESSOR_ID))) {
            //this is only set during the read only view, so just return
            return false;
        }
        ParameterParser params = data.getParameters();
        String submissionRef = params.getString("submissionId");
        String submissionId = null;
        if (submissionRef != null) {
            int i = submissionRef.lastIndexOf(Entity.SEPARATOR);
            if (i == -1) {
                submissionId = submissionRef;
            } else {
                submissionId = submissionRef.substring(i + 1);
            }
        }
        if (submissionId != null) {

            //call the DB to make sure this user can edit this assessment, otherwise it wouldn't exist
            PeerAssessmentItem item = assignmentPeerAssessmentService.getPeerAssessmentItem(submissionId,
                    assessorUserId);
            if (item != null) {
                //find the original assessment item and compare to see if it has changed
                //if so, save it
                boolean changed = false;

                if (submissionId.equals(item.getSubmissionId())
                        && assessorUserId.equals(item.getAssessorUserId())) {
                    //Grade
                    String g = StringUtils.trimToNull(params.getCleanString(GRADE_SUBMISSION_GRADE));
                    Integer score = item.getScore();
                    if (g != null && !"".equals(g)) {
                        try {
                            String assignmentId = (String) state.getAttribute(VIEW_ASSIGNMENT_ID);
                            if (assignmentId == null) {
                                addAlert(state, rb.getString("peerassessment.alert.saveerrorunkown"));
                            } else {
                                Assignment a = getAssignment(assignmentId, "saveReviewGradeForm", state);
                                if (a == null) {
                                    addAlert(state, rb.getString("peerassessment.alert.saveerrorunkown"));
                                } else {
                                    int factor = a.getContent().getFactor();
                                    int dec = (int) Math.log10(factor);
                                    String decSeparator = FormattedText.getDecimalSeparator();
                                    g = StringUtils.replace(g, (",".equals(decSeparator) ? "." : ","),
                                            decSeparator);
                                    NumberFormat nbFormat = FormattedText.getNumberFormat(dec, dec, false);
                                    DecimalFormat dcformat = (DecimalFormat) nbFormat;
                                    Double dScore = dcformat.parse(g).doubleValue();

                                    if (dScore < 0) {
                                        addAlert(state, rb.getString("peerassessment.alert.saveinvalidscore"));
                                    } else if (dScore <= a.getContent().getMaxGradePoint() / (double) factor) {
                                        //scores are saved as whole values
                                        //so a score of 1.3 would be stored as 13
                                        score = (int) Math.round(dScore * factor);
                                    } else {
                                        addAlert(state, rb.getFormattedMessage("plesuse4", new Object[] { g,
                                                a.getContent().getMaxGradePoint() / (double) factor }));
                                    }
                                }
                            }
                        } catch (Exception e) {
                            addAlert(state, rb.getString("peerassessment.alert.saveinvalidscore"));
                        }
                    }
                    boolean scoreChanged = false;
                    if (score != null && item.getScore() == null || score == null && item.getScore() != null
                            || (score != null && item.getScore() != null && !score.equals(item.getScore()))) {
                        //Score changed
                        changed = true;
                        scoreChanged = true;
                        item.setScore(score);
                    }

                    //Comment:
                    boolean checkForFormattingErrors = true;
                    String feedbackComment = processFormattedTextFromBrowser(state,
                            params.getCleanString(GRADE_SUBMISSION_FEEDBACK_COMMENT), checkForFormattingErrors);
                    if (feedbackComment != null && item.getComment() == null
                            || feedbackComment == null && item.getComment() != null || (feedbackComment != null
                                    && item.getComment() != null && !feedbackComment.equals(item.getComment()))) {
                        //comment changed
                        changed = true;
                        item.setComment(feedbackComment);
                    }
                    //Submitted
                    if ("submit".equals(gradeOption)) {
                        if (item.getScore() != null
                                || (item.getComment() != null && !"".equals(item.getComment().trim()))) {
                            item.setSubmitted(true);
                            changed = true;
                        } else {
                            addAlert(state, rb.getString("peerassessment.alert.savenoscorecomment"));
                        }
                    }
                    if (("submit".equals(gradeOption) || "save".equals(gradeOption))
                            && state.getAttribute(STATE_MESSAGE) == null) {
                        if (changed) {
                            //save this in the DB
                            assignmentPeerAssessmentService.savePeerAssessmentItem(item);
                            if (scoreChanged) {
                                //need to re-calcuate the overall score:
                                boolean saved = assignmentPeerAssessmentService.updateScore(submissionId);
                                if (saved) {
                                    //we need to make sure the GB is updated correctly (or removed)
                                    String assignmentId = (String) state.getAttribute(VIEW_ASSIGNMENT_ID);
                                    if (assignmentId != null) {
                                        Assignment a = getAssignment(assignmentId, "saveReviewGradeForm", state);
                                        if (a != null) {
                                            String aReference = a.getReference();
                                            String associateGradebookAssignment = StringUtils
                                                    .trimToNull(a.getProperties().getProperty(
                                                            AssignmentService.PROP_ASSIGNMENT_ASSOCIATE_GRADEBOOK_ASSIGNMENT));
                                            // update grade in gradebook
                                            integrateGradebook(state, aReference, associateGradebookAssignment,
                                                    null, null, null, -1, null, submissionId, "update", -1);
                                        }
                                    }
                                }
                            }
                            state.setAttribute(GRADE_SUBMISSION_DONE, Boolean.TRUE);
                            if ("submit".equals(gradeOption)) {
                                state.setAttribute(GRADE_SUBMISSION_SUBMIT, Boolean.TRUE);
                            }
                        }
                    }

                    //update session state:
                    List<PeerAssessmentItem> peerAssessmentItems = (List<PeerAssessmentItem>) state
                            .getAttribute(PEER_ASSESSMENT_ITEMS);
                    if (peerAssessmentItems != null) {
                        for (int i = 0; i < peerAssessmentItems.size(); i++) {
                            PeerAssessmentItem sItem = peerAssessmentItems.get(i);
                            if (sItem.getSubmissionId().equals(item.getSubmissionId())
                                    && sItem.getAssessorUserId().equals(item.getAssessorUserId())) {
                                //found it, just update it
                                peerAssessmentItems.set(i, item);
                                state.setAttribute(PEER_ASSESSMENT_ITEMS, peerAssessmentItems);
                                break;
                            }
                        }
                    }

                }

                return changed;
            } else {
                addAlert(state, rb.getString("peerassessment.alert.saveerrorunkown"));
            }
        } else {
            addAlert(state, rb.getString("peerassessment.alert.saveerrorunkown"));

        }
        return false;
    }

    /**
     * read grade information form and see if any grading information has been changed
     * @param data
     * @param state
     * @param gradeOption
     * @return
     */
    public boolean readGradeForm(RunData data, SessionState state, String gradeOption) {
        // whether user has changed anything from previous grading information
        boolean hasChange = false;

        ParameterParser params = data.getParameters();
        String sId = params.getString("submissionId");

        //Added by Branden Visser - Check that the state is consistent
        if (!checkSubmissionStateConsistency(state, sId)) {
            return false;
        }

        AssignmentSubmission submission = getSubmission(sId, "readGradeForm", state);

        // security check for allowing grading submission or not
        if (AssignmentService.allowGradeSubmission(sId)) {
            int typeOfGrade = -1;
            boolean withGrade = state.getAttribute(WITH_GRADES) != null
                    ? ((Boolean) state.getAttribute(WITH_GRADES)).booleanValue()
                    : false;

            boolean checkForFormattingErrors = true; // so that grading isn't held up by formatting errors
            String feedbackComment = processFormattedTextFromBrowser(state,
                    params.getCleanString(GRADE_SUBMISSION_FEEDBACK_COMMENT), checkForFormattingErrors);
            // comment value changed?
            hasChange = !hasChange && submission != null
                    ? valueDiffFromStateAttribute(state, feedbackComment, submission.getFeedbackComment())
                    : hasChange;
            if (feedbackComment != null) {
                state.setAttribute(GRADE_SUBMISSION_FEEDBACK_COMMENT, feedbackComment);
            }

            String feedbackText = processAssignmentFeedbackFromBrowser(state,
                    params.getCleanString(GRADE_SUBMISSION_FEEDBACK_TEXT));
            // feedbackText value changed?
            hasChange = !hasChange && submission != null
                    ? valueDiffFromStateAttribute(state, feedbackText, submission.getFeedbackText())
                    : hasChange;
            if (feedbackText != null) {
                state.setAttribute(GRADE_SUBMISSION_FEEDBACK_TEXT, feedbackText);
            }

            // any change inside attachment list?
            if (!hasChange && submission != null) {
                List stateAttachments = submission.getFeedbackAttachments();
                List inputAttachments = (List) state.getAttribute(ATTACHMENTS);

                if (stateAttachments == null && inputAttachments != null
                        || stateAttachments != null && inputAttachments == null
                        || stateAttachments != null && inputAttachments != null
                                && !(stateAttachments.containsAll(inputAttachments)
                                        && inputAttachments.containsAll(stateAttachments))) {
                    hasChange = true;
                }
            }
            state.setAttribute(GRADE_SUBMISSION_FEEDBACK_ATTACHMENT, state.getAttribute(ATTACHMENTS));

            String g = StringUtils.trimToNull(params.getCleanString(GRADE_SUBMISSION_GRADE));

            if (submission != null) {
                Assignment a = submission.getAssignment();
                int factor = a.getContent().getFactor();
                typeOfGrade = a.getContent().getTypeOfGrade();

                if (withGrade) {
                    // any change in grade. Do not check for ungraded assignment type
                    if (!hasChange && typeOfGrade != Assignment.UNGRADED_GRADE_TYPE) {
                        if (typeOfGrade == Assignment.SCORE_GRADE_TYPE) {
                            String currentGrade = submission.getGrade();

                            String decSeparator = FormattedText.getDecimalSeparator();

                            if (currentGrade != null && currentGrade.indexOf(decSeparator) != -1) {
                                currentGrade = scalePointGrade(state, submission.getGrade(), factor);
                            }
                            hasChange = valueDiffFromStateAttribute(state, scalePointGrade(state, g, factor),
                                    currentGrade);
                        } else {
                            hasChange = valueDiffFromStateAttribute(state, g, submission.getGrade());
                        }
                    }
                    if (g != null) {
                        state.setAttribute(GRADE_SUBMISSION_GRADE, g);
                    } else {
                        state.removeAttribute(GRADE_SUBMISSION_GRADE);
                    }

                    // for points grading, one have to enter number as the points
                    String grade = (String) state.getAttribute(GRADE_SUBMISSION_GRADE);

                    // do grade validation only for Assignment with Grade tool
                    if (typeOfGrade == Assignment.SCORE_GRADE_TYPE) {
                        if ((grade != null)) {
                            // the preview grade process might already scaled up the grade by "factor"
                            if (!((String) state.getAttribute(STATE_MODE))
                                    .equals(MODE_INSTRUCTOR_PREVIEW_GRADE_SUBMISSION)) {
                                if (state.getAttribute(STATE_MESSAGE) == null) {
                                    validPointGrade(state, grade, factor);
                                    int maxGrade = a.getContent().getMaxGradePoint();
                                    try {
                                        if (Integer.parseInt(scalePointGrade(state, grade, factor)) > maxGrade) {
                                            if (state.getAttribute(GRADE_GREATER_THAN_MAX_ALERT) == null) {
                                                // alert user first when he enters grade bigger than max scale
                                                addAlert(state, rb.getFormattedMessage("grad2", new Object[] {
                                                        grade,
                                                        displayGrade(state, String.valueOf(maxGrade), factor) }));
                                                state.setAttribute(GRADE_GREATER_THAN_MAX_ALERT, Boolean.TRUE);
                                            } else {
                                                // remove the alert once user confirms he wants to give student higher grade
                                                state.removeAttribute(GRADE_GREATER_THAN_MAX_ALERT);
                                            }
                                        }
                                    } catch (NumberFormatException e) {
                                        alertInvalidPoint(state, grade, factor);
                                        M_log.warn(this + ":readGradeForm " + e.getMessage());
                                    }
                                }

                                state.setAttribute(GRADE_SUBMISSION_GRADE, grade);
                            }
                        }
                    }

                    // if ungraded and grade type is not "ungraded" type
                    if ((grade == null || "ungraded".equals(grade))
                            && (typeOfGrade != Assignment.UNGRADED_GRADE_TYPE) && "release".equals(gradeOption)) {
                        addAlert(state, rb.getString("plespethe2"));
                    }

                    // check for grade overrides
                    if (a.isGroup()) {
                        User[] _users = submission.getSubmitters();
                        HashMap<String, String> scaledValues = new HashMap<String, String>();
                        for (int i = 0; _users != null && i < _users.length; i++) {
                            String ug = StringUtil.trimToNull(
                                    params.getCleanString(GRADE_SUBMISSION_GRADE + "_" + _users[i].getId()));
                            if ("null".equals(ug))
                                ug = null;
                            if (!hasChange && typeOfGrade != Assignment.UNGRADED_GRADE_TYPE) {
                                if (typeOfGrade == Assignment.SCORE_GRADE_TYPE) {
                                    hasChange = valueDiffFromStateAttribute(state,
                                            scalePointGrade(state, ug, factor),
                                            submission.getGradeForUser(_users[i].getId()));
                                } else {
                                    hasChange = valueDiffFromStateAttribute(state, ug,
                                            submission.getGradeForUser(_users[i].getId()));
                                }
                            }
                            if (ug == null) {
                                state.removeAttribute(GRADE_SUBMISSION_GRADE + "_" + _users[i].getId());
                            } else {
                                state.setAttribute(GRADE_SUBMISSION_GRADE + "_" + _users[i].getId(), ug);
                            }
                            // for points grading, one have to enter number as the points
                            String ugrade = (String) state
                                    .getAttribute(GRADE_SUBMISSION_GRADE + "_" + _users[i].getId());
                            // do grade validation only for Assignment with Grade tool
                            if (typeOfGrade == Assignment.SCORE_GRADE_TYPE) {
                                if (ugrade != null && !(ugrade.equals("null"))) {
                                    // the preview grade process might already scaled up the grade by "factor"
                                    if (!((String) state.getAttribute(STATE_MODE))
                                            .equals(MODE_INSTRUCTOR_PREVIEW_GRADE_SUBMISSION)) {
                                        validPointGrade(state, ugrade, factor);
                                        if (state.getAttribute(STATE_MESSAGE) == null) {
                                            int maxGrade = a.getContent().getMaxGradePoint();
                                            try {
                                                if (Integer.parseInt(
                                                        scalePointGrade(state, ugrade, factor)) > maxGrade) {
                                                    if (state.getAttribute(GRADE_GREATER_THAN_MAX_ALERT) == null) {
                                                        // alert user first when he enters grade bigger than max scale
                                                        addAlert(state, rb.getFormattedMessage("grad2",
                                                                new Object[] { ugrade, displayGrade(state,
                                                                        String.valueOf(maxGrade), factor) }));
                                                        state.setAttribute(GRADE_GREATER_THAN_MAX_ALERT,
                                                                Boolean.TRUE);
                                                    } else {
                                                        // remove the alert once user confirms he wants to give student higher grade
                                                        state.removeAttribute(GRADE_GREATER_THAN_MAX_ALERT);
                                                    }
                                                }
                                            } catch (NumberFormatException e) {
                                                alertInvalidPoint(state, ugrade, factor);
                                                M_log.warn(this + ":readGradeForm User " + e.getMessage());
                                            }
                                        }
                                        scaledValues.put(GRADE_SUBMISSION_GRADE + "_" + _users[i].getId(),
                                                scalePointGrade(state, ugrade, factor));
                                    }
                                }
                            }
                        }
                        // SAK-28182 If all grades are right place scaled values in state
                        if (state.getAttribute(STATE_MESSAGE) == null) {
                            for (Map.Entry<String, String> entry : scaledValues.entrySet()) {
                                state.setAttribute(entry.getKey(), entry.getValue());
                            }
                        }
                    }

                }

                // allow resubmit number and due time
                if (params.getString("allowResToggle") != null
                        && params.getString(AssignmentSubmission.ALLOW_RESUBMIT_NUMBER) != null) {
                    // read in allowResubmit params 
                    readAllowResubmitParams(params, state, submission);
                } else {
                    state.removeAttribute(AssignmentSubmission.ALLOW_RESUBMIT_CLOSETIME);
                    state.removeAttribute(AssignmentSubmission.ALLOW_RESUBMIT_NUMBER);

                    if (!"read".equals(gradeOption)) {
                        resetAllowResubmitParams(state);
                    }
                }
                // record whether the resubmission options has been changed or not
                hasChange = hasChange || change_resubmit_option(state, submission);

                if (state.getAttribute(STATE_MESSAGE) == null) {
                    String grade = (String) state.getAttribute(GRADE_SUBMISSION_GRADE);
                    grade = (typeOfGrade == Assignment.SCORE_GRADE_TYPE) ? scalePointGrade(state, grade, factor)
                            : grade;
                    state.setAttribute(GRADE_SUBMISSION_GRADE, grade);
                }
            }
        } else {
            // generate alert
            addAlert(state, rb.getFormattedMessage("not_allowed_to_grade_submission", new Object[] { sId }));
        }

        return hasChange;
    }

    /**
     * whether the current input value is different from existing oldValue
     * @param state
     * @param value
     * @param oldValue
     * @return
     */
    private boolean valueDiffFromStateAttribute(SessionState state, String value, String oldValue) {
        boolean rv = false;
        value = StringUtils.trimToNull(value);
        oldValue = StringUtils.trimToNull(oldValue);
        if (oldValue == null && value != null || oldValue != null && value == null || oldValue != null
                && value != null && !normalizeAttributeSpaces(oldValue).equals(normalizeAttributeSpaces(value))) {
            rv = true;
        }
        return rv;
    }

    /**
    Remove extraneous spaces between tag attributes, to allow a better
    equality test in valueDiffFromStateAttribute.
    @param the input string, to be normalized
    @return the normalized string.
    */
    String normalizeAttributeSpaces(String s) {
        if (s == null)
            return s;
        Pattern p = Pattern.compile("(=\".*?\")( +)");
        Matcher m = p.matcher(s);
        String c = m.replaceAll("$1 ");
        return c;
    }

    /**
     * read in the resubmit parameters into state variables
     * @param params
     * @param state
     * @return the time set for the resubmit close OR null if it is not set
     */
    protected Time readAllowResubmitParams(ParameterParser params, SessionState state, Entity entity) {
        Time resubmitCloseTime = null;
        String allowResubmitNumberString = params.getString(AssignmentSubmission.ALLOW_RESUBMIT_NUMBER);
        state.setAttribute(AssignmentSubmission.ALLOW_RESUBMIT_NUMBER,
                params.getString(AssignmentSubmission.ALLOW_RESUBMIT_NUMBER));

        if (allowResubmitNumberString != null && Integer.parseInt(allowResubmitNumberString) != 0) {
            int closeMonth = (Integer.valueOf(params.getString(ALLOW_RESUBMIT_CLOSEMONTH))).intValue();
            state.setAttribute(ALLOW_RESUBMIT_CLOSEMONTH, Integer.valueOf(closeMonth));
            int closeDay = (Integer.valueOf(params.getString(ALLOW_RESUBMIT_CLOSEDAY))).intValue();
            state.setAttribute(ALLOW_RESUBMIT_CLOSEDAY, Integer.valueOf(closeDay));
            int closeYear = (Integer.valueOf(params.getString(ALLOW_RESUBMIT_CLOSEYEAR))).intValue();
            state.setAttribute(ALLOW_RESUBMIT_CLOSEYEAR, Integer.valueOf(closeYear));
            int closeHour = (Integer.valueOf(params.getString(ALLOW_RESUBMIT_CLOSEHOUR))).intValue();
            state.setAttribute(ALLOW_RESUBMIT_CLOSEHOUR, Integer.valueOf(closeHour));
            int closeMin = (Integer.valueOf(params.getString(ALLOW_RESUBMIT_CLOSEMIN))).intValue();
            state.setAttribute(ALLOW_RESUBMIT_CLOSEMIN, Integer.valueOf(closeMin));
            resubmitCloseTime = TimeService.newTimeLocal(closeYear, closeMonth, closeDay, closeHour, closeMin, 0,
                    0);
            state.setAttribute(AssignmentSubmission.ALLOW_RESUBMIT_CLOSETIME,
                    String.valueOf(resubmitCloseTime.getTime()));
            // no need to show alert if the resubmission setting has not changed
            if (entity == null || change_resubmit_option(state, entity)) {
                // validate date
                if (resubmitCloseTime.before(TimeService.newTime())
                        && state.getAttribute(NEW_ASSIGNMENT_PAST_CLOSE_DATE) == null) {
                    state.setAttribute(NEW_ASSIGNMENT_PAST_CLOSE_DATE, Boolean.TRUE);
                } else {
                    // clean the attribute after user confirm
                    state.removeAttribute(NEW_ASSIGNMENT_PAST_CLOSE_DATE);
                }
                if (state.getAttribute(NEW_ASSIGNMENT_PAST_CLOSE_DATE) != null) {
                    addAlert(state, rb.getString("acesubdea5"));
                }
                if (!Validator.checkDate(closeDay, closeMonth, closeYear)) {
                    addAlert(state, rb.getFormattedMessage("date.invalid",
                            new Object[] { rb.getString("date.resubmission.closedate") }));
                }
            }
        } else {
            // reset the state attributes
            resetAllowResubmitParams(state);
        }
        return resubmitCloseTime;
    }

    protected void resetAllowResubmitParams(SessionState state) {
        state.setAttribute(ALLOW_RESUBMIT_CLOSEMONTH, state.getAttribute(NEW_ASSIGNMENT_DUEMONTH));
        state.setAttribute(ALLOW_RESUBMIT_CLOSEDAY, state.getAttribute(NEW_ASSIGNMENT_DUEDAY));
        state.setAttribute(ALLOW_RESUBMIT_CLOSEYEAR, state.getAttribute(NEW_ASSIGNMENT_DUEYEAR));
        state.setAttribute(ALLOW_RESUBMIT_CLOSEHOUR, state.getAttribute(NEW_ASSIGNMENT_DUEHOUR));
        state.setAttribute(ALLOW_RESUBMIT_CLOSEMIN, state.getAttribute(NEW_ASSIGNMENT_DUEMIN));
        state.removeAttribute(AssignmentSubmission.ALLOW_RESUBMIT_CLOSETIME);
        state.removeAttribute(AssignmentSubmission.ALLOW_RESUBMIT_NUMBER);
    }

    /**
     * Populate the state object, if needed - override to do something!
     */
    protected void initState(SessionState state, VelocityPortlet portlet, JetspeedRunData data) {
        super.initState(state, portlet, data);

        if (m_contentHostingService == null) {
            m_contentHostingService = (ContentHostingService) ComponentManager
                    .get("org.sakaiproject.content.api.ContentHostingService");
        }

        if (m_assignmentSupplementItemService == null) {
            m_assignmentSupplementItemService = (AssignmentSupplementItemService) ComponentManager
                    .get("org.sakaiproject.assignment.api.model.AssignmentSupplementItemService");
        }

        if (m_eventTrackingService == null) {
            m_eventTrackingService = (EventTrackingService) ComponentManager
                    .get("org.sakaiproject.event.api.EventTrackingService");
        }

        if (m_notificationService == null) {
            m_notificationService = (NotificationService) ComponentManager
                    .get("org.sakaiproject.event.api.NotificationService");
        }

        if (m_securityService == null) {
            m_securityService = (SecurityService) ComponentManager
                    .get("org.sakaiproject.authz.api.SecurityService");
        }
        if (assignmentPeerAssessmentService == null) {
            assignmentPeerAssessmentService = (AssignmentPeerAssessmentService) ComponentManager
                    .get("org.sakaiproject.assignment.api.AssignmentPeerAssessmentService");
        }

        if (authzGroupService == null) {
            authzGroupService = ComponentManager.get(AuthzGroupService.class);
        }

        String siteId = ToolManager.getCurrentPlacement().getContext();

        // show the list of assignment view first
        if (state.getAttribute(STATE_SELECTED_VIEW) == null) {
            state.setAttribute(STATE_SELECTED_VIEW, MODE_LIST_ASSIGNMENTS);
        }

        if (state.getAttribute(STATE_USER) == null) {
            state.setAttribute(STATE_USER, UserDirectoryService.getCurrentUser());
        }

        /** The content type image lookup service in the State. */
        ContentTypeImageService iService = (ContentTypeImageService) state
                .getAttribute(STATE_CONTENT_TYPE_IMAGE_SERVICE);
        if (iService == null) {
            iService = org.sakaiproject.content.cover.ContentTypeImageService.getInstance();
            state.setAttribute(STATE_CONTENT_TYPE_IMAGE_SERVICE, iService);
        } // if

        if (state.getAttribute(SUBMISSIONS_SEARCH_ONLY) == null) {
            String propValue = null;
            // save the option into tool configuration
            try {
                Site site = SiteService.getSite(siteId);
                ToolConfiguration tc = site.getToolForCommonId(ASSIGNMENT_TOOL_ID);
                propValue = tc.getPlacementConfig().getProperty(SUBMISSIONS_SEARCH_ONLY);
            } catch (IdUnusedException e) {
                M_log.warn(this + ":init()  Cannot find site with id " + siteId);
            }
            state.setAttribute(SUBMISSIONS_SEARCH_ONLY,
                    propValue == null ? Boolean.FALSE : Boolean.valueOf(propValue));
        }

        /** The calendar tool  */
        if (state.getAttribute(CALENDAR_TOOL_EXIST) == null) {
            CalendarService cService = org.sakaiproject.calendar.cover.CalendarService.getInstance();
            if (cService != null) {
                if (!siteHasTool(siteId, cService.getToolId())) {
                    state.setAttribute(CALENDAR_TOOL_EXIST, Boolean.FALSE);
                    state.removeAttribute(CALENDAR);
                } else {
                    state.setAttribute(CALENDAR_TOOL_EXIST, Boolean.TRUE);
                    if (state.getAttribute(CALENDAR) == null) {
                        state.setAttribute(CALENDAR_TOOL_EXIST, Boolean.TRUE);
                        state.setAttribute(STATE_CALENDAR_SERVICE, cService);

                        String calendarId = ServerConfigurationService.getString("calendar", null);
                        if (calendarId == null) {
                            calendarId = cService.calendarReference(siteId, SiteService.MAIN_CONTAINER);
                            try {
                                state.setAttribute(CALENDAR, cService.getCalendar(calendarId));
                            } catch (IdUnusedException e) {
                                state.removeAttribute(CALENDAR);
                                M_log.info(this + ":initState No calendar found for site " + siteId + " "
                                        + e.getMessage());
                            } catch (PermissionException e) {
                                state.removeAttribute(CALENDAR);
                                M_log.info(
                                        this + ":initState No permission to get the calender. " + e.getMessage());
                            } catch (Exception ex) {
                                state.removeAttribute(CALENDAR);
                                M_log.info(
                                        this + ":initState Assignment : Action : init state : calendar exception : "
                                                + ex.getMessage());

                            }
                        }
                    }
                }
            }
        }

        /** Additional Calendar tool */
        // Setting this attribute to true or false currently makes no difference as it is never checked for true or false.
        // true: means the additional calendar is ready to be used with assignments.
        // false: means the tool may not be deployed at all or may be at the site but not ready to be used.
        if (state.getAttribute(ADDITIONAL_CALENDAR_TOOL_READY) == null) {
            // Get a handle to the Google calendar service class from the Component Manager. It will be null if not deployed.
            CalendarService additionalCalendarService = (CalendarService) ComponentManager
                    .get(CalendarService.ADDITIONAL_CALENDAR);
            if (additionalCalendarService != null) {
                // If tool is not used/used on this site, we set the appropriate flag in the state.
                if (!siteHasTool(siteId, additionalCalendarService.getToolId())) {
                    state.setAttribute(ADDITIONAL_CALENDAR_TOOL_READY, Boolean.FALSE);
                    state.removeAttribute(ADDITIONAL_CALENDAR);
                } else { // Also check that this calendar has been fully created (initialized) in the additional calendar service.
                    if (additionalCalendarService.isCalendarToolInitialized(siteId)) {
                        state.setAttribute(ADDITIONAL_CALENDAR_TOOL_READY, Boolean.TRUE); // Alternate calendar ready for events.
                        if (state.getAttribute(ADDITIONAL_CALENDAR) == null) {
                            try {
                                state.setAttribute(ADDITIONAL_CALENDAR,
                                        additionalCalendarService.getCalendar(null));
                            } catch (IdUnusedException e) {
                                M_log.info(this + ":initState No calendar found for site " + siteId + " "
                                        + e.getMessage());
                            } catch (PermissionException e) {
                                M_log.info(
                                        this + ":initState No permission to get the calendar. " + e.getMessage());
                            }
                        }
                    } else {
                        state.setAttribute(ADDITIONAL_CALENDAR_TOOL_READY, Boolean.FALSE); // Tool on site but alternate calendar not yet created.
                    }

                }
            } else {
                state.setAttribute(ADDITIONAL_CALENDAR_TOOL_READY, Boolean.FALSE); // Tool not deployed on the server.
            }
        }

        /** The Announcement tool  */
        if (state.getAttribute(ANNOUNCEMENT_TOOL_EXIST) == null) {
            if (!siteHasTool(siteId, "sakai.announcements")) {
                state.setAttribute(ANNOUNCEMENT_TOOL_EXIST, Boolean.FALSE);
                state.removeAttribute(ANNOUNCEMENT_CHANNEL);
            } else {
                state.setAttribute(ANNOUNCEMENT_TOOL_EXIST, Boolean.TRUE);
                if (state.getAttribute(ANNOUNCEMENT_CHANNEL) == null) {
                    /** The announcement service in the State. */
                    AnnouncementService aService = (AnnouncementService) state
                            .getAttribute(STATE_ANNOUNCEMENT_SERVICE);
                    if (aService == null) {
                        aService = org.sakaiproject.announcement.cover.AnnouncementService.getInstance();
                        state.setAttribute(STATE_ANNOUNCEMENT_SERVICE, aService);

                        String channelId = ServerConfigurationService.getString("channel", null);
                        if (channelId == null) {
                            channelId = aService.channelReference(siteId, SiteService.MAIN_CONTAINER);
                            try {
                                state.setAttribute(ANNOUNCEMENT_CHANNEL,
                                        aService.getAnnouncementChannel(channelId));
                            } catch (IdUnusedException e) {
                                M_log.warn(this + ":initState No announcement channel found. " + e.getMessage());
                                state.removeAttribute(ANNOUNCEMENT_CHANNEL);
                            } catch (PermissionException e) {
                                M_log.warn(this + ":initState No permission to annoucement channel. "
                                        + e.getMessage());
                            } catch (Exception ex) {
                                M_log.warn(
                                        this + ":initState Assignment : Action : init state : calendar exception : "
                                                + ex.getMessage());
                            }
                        }
                    }
                }
            }
        } // if

        if (state.getAttribute(STATE_CONTEXT_STRING) == null
                || ((String) state.getAttribute(STATE_CONTEXT_STRING)).length() == 0) {
            state.setAttribute(STATE_CONTEXT_STRING, siteId);
        } // if context string is null

        if (state.getAttribute(SORTED_BY) == null) {
            setDefaultSort(state);
        }

        if (state.getAttribute(SORTED_GRADE_SUBMISSION_BY) == null) {
            state.setAttribute(SORTED_GRADE_SUBMISSION_BY, SORTED_GRADE_SUBMISSION_BY_LASTNAME);
        }

        if (state.getAttribute(SORTED_GRADE_SUBMISSION_ASC) == null) {
            state.setAttribute(SORTED_GRADE_SUBMISSION_ASC, Boolean.TRUE.toString());
        }

        if (state.getAttribute(SORTED_SUBMISSION_BY) == null) {
            state.setAttribute(SORTED_SUBMISSION_BY, SORTED_SUBMISSION_BY_LASTNAME);
        }

        if (state.getAttribute(SORTED_SUBMISSION_ASC) == null) {
            state.setAttribute(SORTED_SUBMISSION_ASC, Boolean.TRUE.toString());
        }

        if (state.getAttribute(STUDENT_LIST_SHOW_TABLE) == null) {
            state.setAttribute(STUDENT_LIST_SHOW_TABLE, new ConcurrentSkipListSet());
        }

        if (state.getAttribute(ATTACHMENTS_MODIFIED) == null) {
            state.setAttribute(ATTACHMENTS_MODIFIED, Boolean.valueOf(false));
        }

        // SECTION MOD
        if (state.getAttribute(STATE_SECTION_STRING) == null) {

            state.setAttribute(STATE_SECTION_STRING, "001");
        }

        // // setup the observer to notify the Main panel
        // if (state.getAttribute(STATE_OBSERVER) == null)
        // {
        // // the delivery location for this tool
        // String deliveryId = clientWindowId(state, portlet.getID());
        //
        // // the html element to update on delivery
        // String elementId = mainPanelUpdateId(portlet.getID());
        //
        // // the event resource reference pattern to watch for
        // String pattern = AssignmentService.assignmentReference((String) state.getAttribute (STATE_CONTEXT_STRING), "");
        //
        // state.setAttribute(STATE_OBSERVER, new MultipleEventsObservingCourier(deliveryId, elementId, pattern));
        // }

        if (state.getAttribute(STATE_MODE) == null) {
            state.setAttribute(STATE_MODE, MODE_LIST_ASSIGNMENTS);
        }

        if (state.getAttribute(STATE_TOP_PAGE_MESSAGE) == null) {
            state.setAttribute(STATE_TOP_PAGE_MESSAGE, Integer.valueOf(0));
        }

        if (state.getAttribute(WITH_GRADES) == null) {
            PortletConfig config = portlet.getPortletConfig();
            String withGrades = StringUtils.trimToNull(config.getInitParameter("withGrades"));
            if (withGrades == null) {
                withGrades = Boolean.FALSE.toString();
            }
            state.setAttribute(WITH_GRADES, Boolean.valueOf(withGrades));
        }

        // whether to display the number of submission/ungraded submission column
        // default to show
        if (state.getAttribute(SHOW_NUMBER_SUBMISSION_COLUMN) == null) {
            PortletConfig config = portlet.getPortletConfig();
            String value = StringUtils.trimToNull(config.getInitParameter(SHOW_NUMBER_SUBMISSION_COLUMN));
            if (value == null) {
                value = Boolean.TRUE.toString();
            }
            state.setAttribute(SHOW_NUMBER_SUBMISSION_COLUMN, Boolean.valueOf(value));
        }

        if (state.getAttribute(NEW_ASSIGNMENT_YEAR_RANGE_FROM) == null) {
            state.setAttribute(NEW_ASSIGNMENT_YEAR_RANGE_FROM,
                    Integer.valueOf(GregorianCalendar.getInstance().get(GregorianCalendar.YEAR) - 4));
        }

        if (state.getAttribute(NEW_ASSIGNMENT_YEAR_RANGE_TO) == null) {
            state.setAttribute(NEW_ASSIGNMENT_YEAR_RANGE_TO,
                    Integer.valueOf(GregorianCalendar.getInstance().get(GregorianCalendar.YEAR) + 4));
        }
    } // initState

    /**
     * whether the site has the specified tool
     * @param siteId
     * @return
     */
    private boolean siteHasTool(String siteId, String toolId) {
        boolean rv = false;
        try {
            Site s = SiteService.getSite(siteId);
            if (s.getToolForCommonId(toolId) != null) {
                rv = true;
            }
        } catch (Exception e) {
            M_log.warn(this + "siteHasTool" + e.getMessage() + siteId);
        }
        return rv;
    }

    /**
     * reset the attributes for view submission
     */
    private void resetViewSubmission(SessionState state) {
        state.removeAttribute(VIEW_SUBMISSION_ASSIGNMENT_REFERENCE);
        state.removeAttribute(VIEW_SUBMISSION_TEXT);
        state.setAttribute(VIEW_SUBMISSION_HONOR_PLEDGE_YES, "false");
        state.removeAttribute(GRADE_GREATER_THAN_MAX_ALERT);

    } // resetViewSubmission

    /**
     * initialize assignment attributes
     * @param state
     */
    private void initializeAssignment(SessionState state) {
        // put the input value into the state attributes
        state.setAttribute(NEW_ASSIGNMENT_TITLE, "");

        // get current time
        Time t = TimeService.newTime();
        TimeBreakdown tB = t.breakdownLocal();
        int month = tB.getMonth();
        int day = tB.getDay();
        int year = tB.getYear();

        // set the visible time to be 12:00 PM
        if (Boolean.valueOf(ServerConfigurationService.getBoolean("assignment.visible.date.enabled", false))) {
            state.setAttribute(NEW_ASSIGNMENT_VISIBLEMONTH, Integer.valueOf(month));
            state.setAttribute(NEW_ASSIGNMENT_VISIBLEDAY, Integer.valueOf(day));
            state.setAttribute(NEW_ASSIGNMENT_VISIBLEYEAR, Integer.valueOf(year));
            state.setAttribute(NEW_ASSIGNMENT_VISIBLEHOUR, Integer.valueOf(12));
            state.setAttribute(NEW_ASSIGNMENT_VISIBLEMIN, Integer.valueOf(0));
            state.setAttribute(NEW_ASSIGNMENT_VISIBLETOGGLE, false);
        }

        // set the open time to be 12:00 PM
        state.setAttribute(NEW_ASSIGNMENT_OPENMONTH, Integer.valueOf(month));
        state.setAttribute(NEW_ASSIGNMENT_OPENDAY, Integer.valueOf(day));
        state.setAttribute(NEW_ASSIGNMENT_OPENYEAR, Integer.valueOf(year));
        state.setAttribute(NEW_ASSIGNMENT_OPENHOUR, Integer.valueOf(12));
        state.setAttribute(NEW_ASSIGNMENT_OPENMIN, Integer.valueOf(0));

        // set the all purpose item release time
        state.setAttribute(ALLPURPOSE_RELEASE_MONTH, Integer.valueOf(month));
        state.setAttribute(ALLPURPOSE_RELEASE_DAY, Integer.valueOf(day));
        state.setAttribute(ALLPURPOSE_RELEASE_YEAR, Integer.valueOf(year));
        state.setAttribute(ALLPURPOSE_RELEASE_HOUR, Integer.valueOf(12));
        state.setAttribute(ALLPURPOSE_RELEASE_MIN, Integer.valueOf(0));

        // due date is shifted forward by 7 days
        t.setTime(t.getTime() + 7 * 24 * 60 * 60 * 1000);
        tB = t.breakdownLocal();
        month = tB.getMonth();
        day = tB.getDay();
        year = tB.getYear();

        // set the due time to be 5:00pm
        state.setAttribute(NEW_ASSIGNMENT_DUEMONTH, Integer.valueOf(month));
        state.setAttribute(NEW_ASSIGNMENT_DUEDAY, Integer.valueOf(day));
        state.setAttribute(NEW_ASSIGNMENT_DUEYEAR, Integer.valueOf(year));
        state.setAttribute(NEW_ASSIGNMENT_DUEHOUR, Integer.valueOf(17));
        state.setAttribute(NEW_ASSIGNMENT_DUEMIN, Integer.valueOf(0));

        // set the resubmit time to be the same as due time
        state.setAttribute(ALLOW_RESUBMIT_CLOSEMONTH, Integer.valueOf(month));
        state.setAttribute(ALLOW_RESUBMIT_CLOSEDAY, Integer.valueOf(day));
        state.setAttribute(ALLOW_RESUBMIT_CLOSEYEAR, Integer.valueOf(year));
        state.setAttribute(ALLOW_RESUBMIT_CLOSEHOUR, Integer.valueOf(17));
        state.setAttribute(ALLOW_RESUBMIT_CLOSEMIN, Integer.valueOf(0));
        state.setAttribute(AssignmentSubmission.ALLOW_RESUBMIT_NUMBER, Integer.valueOf(1));

        // enable the close date by default
        state.setAttribute(NEW_ASSIGNMENT_ENABLECLOSEDATE, Boolean.valueOf(true));
        // set the close time to be 5:00 pm, same as the due time by default
        state.setAttribute(NEW_ASSIGNMENT_CLOSEMONTH, Integer.valueOf(month));
        state.setAttribute(NEW_ASSIGNMENT_CLOSEDAY, Integer.valueOf(day));
        state.setAttribute(NEW_ASSIGNMENT_CLOSEYEAR, Integer.valueOf(year));
        state.setAttribute(NEW_ASSIGNMENT_CLOSEHOUR, Integer.valueOf(17));
        state.setAttribute(NEW_ASSIGNMENT_CLOSEMIN, Integer.valueOf(0));

        // set the all purpose retract time
        state.setAttribute(ALLPURPOSE_RETRACT_MONTH, Integer.valueOf(month));
        state.setAttribute(ALLPURPOSE_RETRACT_DAY, Integer.valueOf(day));
        state.setAttribute(ALLPURPOSE_RETRACT_YEAR, Integer.valueOf(year));
        state.setAttribute(ALLPURPOSE_RETRACT_HOUR, Integer.valueOf(17));
        state.setAttribute(ALLPURPOSE_RETRACT_MIN, Integer.valueOf(0));

        // set the peer period time to be 10 mins after accept until date
        state.setAttribute(NEW_ASSIGNMENT_PEERPERIODMONTH, Integer.valueOf(month));
        state.setAttribute(NEW_ASSIGNMENT_PEERPERIODDAY, Integer.valueOf(day));
        state.setAttribute(NEW_ASSIGNMENT_PEERPERIODYEAR, Integer.valueOf(year));
        state.setAttribute(NEW_ASSIGNMENT_PEERPERIODHOUR, Integer.valueOf(17));
        state.setAttribute(NEW_ASSIGNMENT_PEERPERIODMIN, Integer.valueOf(10));

        state.setAttribute(NEW_ASSIGNMENT_PEER_ASSESSMENT_ANON_EVAL, Boolean.TRUE.toString());
        state.setAttribute(NEW_ASSIGNMENT_PEER_ASSESSMENT_STUDENT_VIEW_REVIEWS, Boolean.TRUE.toString());
        state.setAttribute(NEW_ASSIGNMENT_PEER_ASSESSMENT_NUM_REVIEWS, 1);

        state.setAttribute(NEW_ASSIGNMENT_SECTION, "001");
        state.setAttribute(NEW_ASSIGNMENT_SUBMISSION_TYPE,
                Integer.valueOf(Assignment.TEXT_AND_ATTACHMENT_ASSIGNMENT_SUBMISSION));
        state.setAttribute(NEW_ASSIGNMENT_GRADE_TYPE, Integer.valueOf(Assignment.UNGRADED_GRADE_TYPE));
        state.setAttribute(NEW_ASSIGNMENT_GRADE_POINTS, "");
        state.setAttribute(NEW_ASSIGNMENT_DESCRIPTION, "");
        state.setAttribute(ResourceProperties.NEW_ASSIGNMENT_CHECK_ADD_DUE_DATE, Boolean.FALSE.toString());
        state.setAttribute(ResourceProperties.NEW_ASSIGNMENT_CHECK_AUTO_ANNOUNCE, Boolean.FALSE.toString());

        String defaultNotification = ServerConfigurationService.getString("announcement.default.notification", "n");
        if (defaultNotification.equalsIgnoreCase("r")) {
            state.setAttribute(Assignment.ASSIGNMENT_OPENDATE_NOTIFICATION,
                    Assignment.ASSIGNMENT_OPENDATE_NOTIFICATION_HIGH);
        } else if (defaultNotification.equalsIgnoreCase("o")) {
            state.setAttribute(Assignment.ASSIGNMENT_OPENDATE_NOTIFICATION,
                    Assignment.ASSIGNMENT_OPENDATE_NOTIFICATION_LOW);
        } else {
            state.setAttribute(Assignment.ASSIGNMENT_OPENDATE_NOTIFICATION,
                    Assignment.ASSIGNMENT_OPENDATE_NOTIFICATION_NONE);
        }
        // make the honor pledge not include as the default
        state.setAttribute(NEW_ASSIGNMENT_CHECK_ADD_HONOR_PLEDGE,
                (Integer.valueOf(Assignment.HONOR_PLEDGE_NONE)).toString());

        state.setAttribute(NEW_ASSIGNMENT_ADD_TO_GRADEBOOK, AssignmentService.GRADEBOOK_INTEGRATION_NO);

        state.setAttribute(NEW_ASSIGNMENT_ATTACHMENT, EntityManager.newReferenceList());

        state.setAttribute(NEW_ASSIGNMENT_FOCUS, NEW_ASSIGNMENT_TITLE);

        state.removeAttribute(NEW_ASSIGNMENT_DESCRIPTION_EMPTY);

        // reset the global navigaion alert flag
        if (state.getAttribute(ALERT_GLOBAL_NAVIGATION) != null) {
            state.removeAttribute(ALERT_GLOBAL_NAVIGATION);
        }

        state.removeAttribute(NEW_ASSIGNMENT_RANGE);
        state.removeAttribute(NEW_ASSIGNMENT_GROUPS);

        // remove the edit assignment id if any
        state.removeAttribute(EDIT_ASSIGNMENT_ID);

        // remove the resubmit number
        state.removeAttribute(AssignmentSubmission.ALLOW_RESUBMIT_NUMBER);

        // remove the supplement attributes
        state.removeAttribute(MODELANSWER);
        state.removeAttribute(MODELANSWER_TEXT);
        state.removeAttribute(MODELANSWER_SHOWTO);
        state.removeAttribute(MODELANSWER_ATTACHMENTS);
        state.removeAttribute(NOTE);
        state.removeAttribute(NOTE_TEXT);
        state.removeAttribute(NOTE_SHAREWITH);
        state.removeAttribute(ALLPURPOSE);
        state.removeAttribute(ALLPURPOSE_TITLE);
        state.removeAttribute(ALLPURPOSE_TEXT);
        state.removeAttribute(ALLPURPOSE_HIDE);
        state.removeAttribute(ALLPURPOSE_SHOW_FROM);
        state.removeAttribute(ALLPURPOSE_SHOW_TO);
        state.removeAttribute(ALLPURPOSE_RELEASE_DATE);
        state.removeAttribute(ALLPURPOSE_RETRACT_DATE);
        state.removeAttribute(ALLPURPOSE_ACCESS);
        state.removeAttribute(ALLPURPOSE_ATTACHMENTS);

        // SAK-17606
        state.removeAttribute(NEW_ASSIGNMENT_CHECK_ANONYMOUS_GRADING);

    } // resetNewAssignment

    /**
     * reset the attributes for assignment
     */
    private void resetAssignment(SessionState state) {
        state.removeAttribute(NEW_ASSIGNMENT_TITLE);
        state.removeAttribute(NEW_ASSIGNMENT_OPENMONTH);
        state.removeAttribute(NEW_ASSIGNMENT_OPENDAY);
        state.removeAttribute(NEW_ASSIGNMENT_OPENYEAR);
        state.removeAttribute(NEW_ASSIGNMENT_OPENHOUR);
        state.removeAttribute(NEW_ASSIGNMENT_OPENMIN);

        state.removeAttribute(ALLPURPOSE_RELEASE_MONTH);
        state.removeAttribute(ALLPURPOSE_RELEASE_DAY);
        state.removeAttribute(ALLPURPOSE_RELEASE_YEAR);
        state.removeAttribute(ALLPURPOSE_RELEASE_HOUR);
        state.removeAttribute(ALLPURPOSE_RELEASE_MIN);

        state.removeAttribute(NEW_ASSIGNMENT_DUEMONTH);
        state.removeAttribute(NEW_ASSIGNMENT_DUEDAY);
        state.removeAttribute(NEW_ASSIGNMENT_DUEYEAR);
        state.removeAttribute(NEW_ASSIGNMENT_DUEHOUR);
        state.removeAttribute(NEW_ASSIGNMENT_DUEMIN);

        state.removeAttribute(NEW_ASSIGNMENT_VISIBLEMONTH);
        state.removeAttribute(NEW_ASSIGNMENT_VISIBLEDAY);
        state.removeAttribute(NEW_ASSIGNMENT_VISIBLEYEAR);
        state.removeAttribute(NEW_ASSIGNMENT_VISIBLEHOUR);
        state.removeAttribute(NEW_ASSIGNMENT_VISIBLEMIN);
        state.removeAttribute(NEW_ASSIGNMENT_VISIBLETOGGLE);

        state.removeAttribute(NEW_ASSIGNMENT_ENABLECLOSEDATE);
        state.removeAttribute(NEW_ASSIGNMENT_CLOSEMONTH);
        state.removeAttribute(NEW_ASSIGNMENT_CLOSEDAY);
        state.removeAttribute(NEW_ASSIGNMENT_CLOSEYEAR);
        state.removeAttribute(NEW_ASSIGNMENT_CLOSEHOUR);
        state.removeAttribute(NEW_ASSIGNMENT_CLOSEMIN);

        // set the all purpose retract time
        state.removeAttribute(ALLPURPOSE_RETRACT_MONTH);
        state.removeAttribute(ALLPURPOSE_RETRACT_DAY);
        state.removeAttribute(ALLPURPOSE_RETRACT_YEAR);
        state.removeAttribute(ALLPURPOSE_RETRACT_HOUR);
        state.removeAttribute(ALLPURPOSE_RETRACT_MIN);

        state.removeAttribute(NEW_ASSIGNMENT_SECTION);
        state.removeAttribute(NEW_ASSIGNMENT_SUBMISSION_TYPE);
        state.removeAttribute(NEW_ASSIGNMENT_GRADE_TYPE);
        state.removeAttribute(NEW_ASSIGNMENT_GRADE_POINTS);
        state.removeAttribute(NEW_ASSIGNMENT_DESCRIPTION);
        state.removeAttribute(ResourceProperties.NEW_ASSIGNMENT_CHECK_ADD_DUE_DATE);
        state.removeAttribute(ResourceProperties.NEW_ASSIGNMENT_CHECK_AUTO_ANNOUNCE);
        state.removeAttribute(Assignment.ASSIGNMENT_OPENDATE_NOTIFICATION);
        state.removeAttribute(NEW_ASSIGNMENT_CHECK_ADD_HONOR_PLEDGE);
        state.removeAttribute(NEW_ASSIGNMENT_CHECK_HIDE_DUE_DATE);
        state.removeAttribute(NEW_ASSIGNMENT_ADD_TO_GRADEBOOK);
        state.removeAttribute(NEW_ASSIGNMENT_ATTACHMENT);
        state.removeAttribute(NEW_ASSIGNMENT_FOCUS);
        state.removeAttribute(NEW_ASSIGNMENT_DESCRIPTION_EMPTY);
        state.removeAttribute(NEW_ASSIGNMENT_GROUP_SUBMIT);

        // reset the global navigaion alert flag
        if (state.getAttribute(ALERT_GLOBAL_NAVIGATION) != null) {
            state.removeAttribute(ALERT_GLOBAL_NAVIGATION);
        }

        state.removeAttribute(NEW_ASSIGNMENT_RANGE);
        state.removeAttribute(NEW_ASSIGNMENT_GROUPS);

        // remove the edit assignment id if any
        state.removeAttribute(EDIT_ASSIGNMENT_ID);

        // remove the resubmit number
        state.removeAttribute(AssignmentSubmission.ALLOW_RESUBMIT_NUMBER);

        // remove the supplement attributes
        state.removeAttribute(MODELANSWER);
        state.removeAttribute(MODELANSWER_TEXT);
        state.removeAttribute(MODELANSWER_SHOWTO);
        state.removeAttribute(MODELANSWER_ATTACHMENTS);
        state.removeAttribute(NOTE);
        state.removeAttribute(NOTE_TEXT);
        state.removeAttribute(NOTE_SHAREWITH);
        state.removeAttribute(ALLPURPOSE);
        state.removeAttribute(ALLPURPOSE_TITLE);
        state.removeAttribute(ALLPURPOSE_TEXT);
        state.removeAttribute(ALLPURPOSE_HIDE);
        state.removeAttribute(ALLPURPOSE_SHOW_FROM);
        state.removeAttribute(ALLPURPOSE_SHOW_TO);
        state.removeAttribute(ALLPURPOSE_RELEASE_DATE);
        state.removeAttribute(ALLPURPOSE_RETRACT_DATE);
        state.removeAttribute(ALLPURPOSE_ACCESS);
        state.removeAttribute(ALLPURPOSE_ATTACHMENTS);

        //revmoew peer assessment settings
        state.removeAttribute(NEW_ASSIGNMENT_USE_PEER_ASSESSMENT);
        state.removeAttribute(NEW_ASSIGNMENT_PEERPERIODMONTH);
        state.removeAttribute(NEW_ASSIGNMENT_PEERPERIODDAY);
        state.removeAttribute(NEW_ASSIGNMENT_PEERPERIODYEAR);
        state.removeAttribute(NEW_ASSIGNMENT_PEERPERIODHOUR);
        state.removeAttribute(NEW_ASSIGNMENT_PEERPERIODMIN);
        state.removeAttribute(NEW_ASSIGNMENT_PEER_ASSESSMENT_ANON_EVAL);
        state.removeAttribute(NEW_ASSIGNMENT_PEER_ASSESSMENT_STUDENT_VIEW_REVIEWS);
        state.removeAttribute(NEW_ASSIGNMENT_PEER_ASSESSMENT_NUM_REVIEWS);
        state.removeAttribute(NEW_ASSIGNMENT_PEER_ASSESSMENT_INSTRUCTIONS);

        // remove content-review setting
        state.removeAttribute(NEW_ASSIGNMENT_USE_REVIEW_SERVICE);

        state.removeAttribute(Assignment.ASSIGNMENT_RELEASERESUBMISSION_NOTIFICATION_VALUE);

        state.removeAttribute(AssignmentService.PROP_ASSIGNMENT_ASSOCIATE_GRADEBOOK_ASSIGNMENT);

    } // resetNewAssignment

    /**
     * construct a HashMap using integer as the key and three character string of the month as the value
     */
    private HashMap monthTable() {
        HashMap n = new HashMap();
        n.put(Integer.valueOf(1), rb.getString("jan"));
        n.put(Integer.valueOf(2), rb.getString("feb"));
        n.put(Integer.valueOf(3), rb.getString("mar"));
        n.put(Integer.valueOf(4), rb.getString("apr"));
        n.put(Integer.valueOf(5), rb.getString("may"));
        n.put(Integer.valueOf(6), rb.getString("jun"));
        n.put(Integer.valueOf(7), rb.getString("jul"));
        n.put(Integer.valueOf(8), rb.getString("aug"));
        n.put(Integer.valueOf(9), rb.getString("sep"));
        n.put(Integer.valueOf(10), rb.getString("oct"));
        n.put(Integer.valueOf(11), rb.getString("nov"));
        n.put(Integer.valueOf(12), rb.getString("dec"));
        return n;

    } // monthTable

    /**
     * construct a HashMap using the integer as the key and grade type String as the value
     */
    private HashMap gradeTypeTable() {

        HashMap gradeTypeTable = new HashMap();
        gradeTypeTable.put(Integer.valueOf(1), rb.getString(AssignmentConstants.ASSN_GRADE_TYPE_NOGRADE_PROP));
        gradeTypeTable.put(Integer.valueOf(2), rb.getString(AssignmentConstants.ASSN_GRADE_TYPE_LETTER_PROP));
        gradeTypeTable.put(Integer.valueOf(3), rb.getString(AssignmentConstants.ASSN_GRADE_TYPE_POINTS_PROP));
        gradeTypeTable.put(Integer.valueOf(4), rb.getString(AssignmentConstants.ASSN_GRADE_TYPE_PASS_FAIL_PROP));
        gradeTypeTable.put(Integer.valueOf(5), rb.getString(AssignmentConstants.ASSN_GRADE_TYPE_CHECK_PROP));

        return gradeTypeTable;
    } // gradeTypeTable

    /**
     * construct a HashMap using the integer as the key and submission type String as the value
     */
    private HashMap submissionTypeTable() {

        HashMap submissionTypeTable = new HashMap();
        submissionTypeTable.put(Integer.valueOf(1),
                rb.getString(AssignmentConstants.ASSN_SUBMISSION_TYPE_INLINE_PROP));
        submissionTypeTable.put(Integer.valueOf(2),
                rb.getString(AssignmentConstants.ASSN_SUBMISSION_TYPE_ATTACHMENTS_ONLY_PROP));
        submissionTypeTable.put(Integer.valueOf(3),
                rb.getString(AssignmentConstants.ASSN_SUBMISSION_TYPE_INLINE_AND_ATTACHMENTS_PROP));
        submissionTypeTable.put(Integer.valueOf(4),
                rb.getString(AssignmentConstants.ASSN_SUBMISSION_TYPE_NON_ELECTRONIC_PROP));
        submissionTypeTable.put(Integer.valueOf(5),
                rb.getString(AssignmentConstants.ASSN_SUBMISSION_TYPE_SINGLE_ATTACHMENT_PROP));

        return submissionTypeTable;
    } // submissionTypeTable

    /**
    * Add the list of categories from the gradebook tool
    * construct a HashMap using the integer as the key and category String as the value
    * @return
    */
    private HashMap<Long, String> categoryTable() {
        boolean gradebookExists = isGradebookDefined();
        HashMap<Long, String> catTable = new HashMap<Long, String>();
        if (gradebookExists) {

            GradebookService g = (GradebookService) ComponentManager
                    .get("org.sakaiproject.service.gradebook.GradebookService");
            String gradebookUid = ToolManager.getInstance().getCurrentPlacement().getContext();

            List<CategoryDefinition> categoryDefinitions = g.getCategoryDefinitions(gradebookUid);

            catTable.put(Long.valueOf(-1), rb.getString("grading.unassigned"));
            for (CategoryDefinition category : categoryDefinitions) {
                catTable.put(category.getId(), category.getName());
            }
        }
        return catTable;

    } // categoryTable

    /**
     * Sort based on the given property
     */
    public void doSort(RunData data) {
        SessionState state = ((JetspeedRunData) data).getPortletSessionState(((JetspeedRunData) data).getJs_peid());

        // we are changing the sort, so start from the first page again
        resetPaging(state);

        setupSort(data, data.getParameters().getString("criteria"));
    }

    /**
     * setup sorting parameters
     *
     * @param criteria
     *        String for sortedBy
     */
    private void setupSort(RunData data, String criteria) {
        SessionState state = ((JetspeedRunData) data).getPortletSessionState(((JetspeedRunData) data).getJs_peid());

        // current sorting sequence
        String asc = "";
        if (!criteria.equals(state.getAttribute(SORTED_BY))) {
            state.setAttribute(SORTED_BY, criteria);
            asc = Boolean.TRUE.toString();
            state.setAttribute(SORTED_ASC, asc);
        } else {
            // current sorting sequence
            asc = (String) state.getAttribute(SORTED_ASC);

            // toggle between the ascending and descending sequence
            if (asc.equals(Boolean.TRUE.toString())) {
                asc = Boolean.FALSE.toString();
            } else {
                asc = Boolean.TRUE.toString();
            }
            state.setAttribute(SORTED_ASC, asc);
        }

    } // doSort

    /**
     * Do sort by group title
     */
    public void doSortbygrouptitle(RunData data) {
        setupSort(data, SORTED_BY_GROUP_TITLE);

    } // doSortbygrouptitle

    /**
     * Do sort by group description
     */
    public void doSortbygroupdescription(RunData data) {
        setupSort(data, SORTED_BY_GROUP_DESCRIPTION);

    } // doSortbygroupdescription

    /**
     * Sort submission based on the given property
     */
    public void doSort_submission(RunData data) {
        SessionState state = ((JetspeedRunData) data).getPortletSessionState(((JetspeedRunData) data).getJs_peid());

        // we are changing the sort, so start from the first page again
        resetPaging(state);

        // get the ParameterParser from RunData
        ParameterParser params = data.getParameters();

        String criteria = params.getString("criteria");

        // current sorting sequence
        String asc = "";

        if (!criteria.equals(state.getAttribute(SORTED_SUBMISSION_BY))) {
            state.setAttribute(SORTED_SUBMISSION_BY, criteria);
            asc = Boolean.TRUE.toString();
            state.setAttribute(SORTED_SUBMISSION_ASC, asc);
        } else {
            // current sorting sequence
            state.setAttribute(SORTED_SUBMISSION_BY, criteria);
            asc = (String) state.getAttribute(SORTED_SUBMISSION_ASC);

            // toggle between the ascending and descending sequence
            if (asc.equals(Boolean.TRUE.toString())) {
                asc = Boolean.FALSE.toString();
            } else {
                asc = Boolean.TRUE.toString();
            }
            state.setAttribute(SORTED_SUBMISSION_ASC, asc);
        }
    } // doSort_submission

    /**
     * Sort submission based on the given property in instructor grade view
     */
    public void doSort_grade_submission(RunData data) {
        SessionState state = ((JetspeedRunData) data).getPortletSessionState(((JetspeedRunData) data).getJs_peid());

        // we are changing the sort, so start from the first page again
        resetPaging(state);

        // get the ParameterParser from RunData
        ParameterParser params = data.getParameters();

        String criteria = params.getString("criteria");

        // current sorting sequence
        String asc = "";

        if (!criteria.equals(state.getAttribute(SORTED_GRADE_SUBMISSION_BY))) {
            state.setAttribute(SORTED_GRADE_SUBMISSION_BY, criteria);
            //for content review default is desc
            if (criteria.equals(SORTED_GRADE_SUBMISSION_CONTENTREVIEW))
                asc = Boolean.FALSE.toString();
            else
                asc = Boolean.TRUE.toString();

            state.setAttribute(SORTED_GRADE_SUBMISSION_ASC, asc);
        } else {
            // current sorting sequence
            state.setAttribute(SORTED_GRADE_SUBMISSION_BY, criteria);
            asc = (String) state.getAttribute(SORTED_GRADE_SUBMISSION_ASC);

            // toggle between the ascending and descending sequence
            if (asc.equals(Boolean.TRUE.toString())) {
                asc = Boolean.FALSE.toString();
            } else {
                asc = Boolean.TRUE.toString();
            }
            state.setAttribute(SORTED_GRADE_SUBMISSION_ASC, asc);
        }
    } // doSort_grade_submission

    public void doSort_tags(RunData data) {
        SessionState state = ((JetspeedRunData) data).getPortletSessionState(((JetspeedRunData) data).getJs_peid());

        ParameterParser params = data.getParameters();

        String criteria = params.getString("criteria");
        String providerId = params.getString(PROVIDER_ID);

        String savedText = params.getString("savedText");
        state.setAttribute(VIEW_SUBMISSION_TEXT, savedText);

        String mode = (String) state.getAttribute(STATE_MODE);

        List<DecoratedTaggingProvider> providers = (List) state.getAttribute(mode + PROVIDER_LIST);

        for (DecoratedTaggingProvider dtp : providers) {
            if (dtp.getProvider().getId().equals(providerId)) {
                Sort sort = dtp.getSort();
                if (sort.getSort().equals(criteria)) {
                    sort.setAscending(sort.isAscending() ? false : true);
                } else {
                    sort.setSort(criteria);
                    sort.setAscending(true);
                }
                break;
            }
        }
    }

    public void doPage_tags(RunData data) {
        SessionState state = ((JetspeedRunData) data).getPortletSessionState(((JetspeedRunData) data).getJs_peid());

        ParameterParser params = data.getParameters();

        String page = params.getString("page");
        String pageSize = params.getString("pageSize");
        String providerId = params.getString(PROVIDER_ID);

        String savedText = params.getString("savedText");
        state.setAttribute(VIEW_SUBMISSION_TEXT, savedText);

        String mode = (String) state.getAttribute(STATE_MODE);

        List<DecoratedTaggingProvider> providers = (List) state.getAttribute(mode + PROVIDER_LIST);

        for (DecoratedTaggingProvider dtp : providers) {
            if (dtp.getProvider().getId().equals(providerId)) {
                Pager pager = dtp.getPager();
                pager.setPageSize(Integer.valueOf(pageSize));
                if (Pager.FIRST.equals(page)) {
                    pager.setFirstItem(0);
                } else if (Pager.PREVIOUS.equals(page)) {
                    pager.setFirstItem(pager.getFirstItem() - pager.getPageSize());
                } else if (Pager.NEXT.equals(page)) {
                    pager.setFirstItem(pager.getFirstItem() + pager.getPageSize());
                } else if (Pager.LAST.equals(page)) {
                    pager.setFirstItem((pager.getTotalItems() / pager.getPageSize()) * pager.getPageSize());
                }
                break;
            }
        }
    }

    /**
     * the SubmitterSubmission clas
     */
    public class SubmitterSubmission {
        /**
         * the User object
         */
        User m_user = null;

        /**
         * is the Submitter in more than one group
         */
        Boolean m_multi_group = false;

        /**
         * the Group
         */
        Group m_group = null;

        /**
         * the AssignmentSubmission object
         */
        AssignmentSubmission m_submission = null;

        /**
         * the AssignmentSubmission object
         */
        User m_submittedBy = null;

        public SubmitterSubmission(User u, AssignmentSubmission s) {
            m_user = u;
            m_submission = s;
        }

        public SubmitterSubmission(Group g, AssignmentSubmission s) {
            m_group = g;
            m_submission = s;
        }

        /**
         * Returns the AssignmentSubmission object
         */
        public AssignmentSubmission getSubmission() {
            return m_submission;
        }

        /**
         * Returns the User object
         */
        public User getUser() {
            return m_user;
        }

        public void setSubmittedBy(User submittedBy) {
            m_submittedBy = submittedBy;
        }

        /**
         * Returns the User object of the submitter,
         * if null, the user submitted the assignment himself.
         */
        public User getSubmittedBy() {
            return m_submittedBy;
        }

        public Group getGroup() {
            return m_group;
        }

        public void setGroup(Group _group) {
            m_group = _group;
        }

        public Boolean getIsMultiGroup() {
            return m_multi_group;
        }

        public void setMultiGroup(Boolean _multi) {
            m_multi_group = _multi;
        }

        public String getGradeForUser(String id) {
            String grade = getSubmission() == null ? null : getSubmission().getGradeForUser(id);
            if (grade != null && getSubmission().getAssignment().getContent() != null && getSubmission()
                    .getAssignment().getContent().getTypeOfGrade() == Assignment.SCORE_GRADE_TYPE) {
                if (grade.length() > 0 && !"0".equals(grade)) {
                    try {
                        Integer.parseInt(grade);
                        // if point grade, display the grade with one decimal place
                        return grade.substring(0, grade.length() - 1) + "." + grade.substring(grade.length() - 1);
                    } catch (Exception e) {
                        return grade;
                    }
                } else {
                    return StringUtil.trimToZero(grade);
                }
            }
            return grade;
        }

    }

    /**
     * the AssignmentComparator clas
     */
    private class AssignmentComparator implements Comparator {
        Collator collator = null;

        /**
         * the SessionState object
         */
        SessionState m_state = null;

        /**
         * the criteria
         */
        String m_criteria = null;

        /**
         * the criteria
         */
        String m_asc = null;

        /**
         * the user
         */
        User m_user = null;

        // true if users should be compared by anonymous submitter id rather than other identifiers
        boolean m_anon = false;

        /**
         * constructor
         *
         * @param state
         *        The state object
         * @param criteria
         *        The sort criteria string
         * @param asc
         *        The sort order string. TRUE_STRING if ascending; "false" otherwise.
         */
        public AssignmentComparator(SessionState state, String criteria, String asc) {
            this(state, criteria, asc, null);

        } // constructor

        /**
         * constructor
         *
         * @param state
         *        The state object
         * @param criteria
         *        The sort criteria string
         * @param asc
         *        The sort order string. TRUE_STRING if ascending; "false" otherwise.
         * @param user
         *        The user object
         */
        public AssignmentComparator(SessionState state, String criteria, String asc, User user) {
            m_state = state;
            m_criteria = criteria;
            m_asc = asc;
            m_user = user;
            try {
                collator = new RuleBasedCollator(((RuleBasedCollator) Collator.getInstance()).getRules()
                        .replaceAll("<'\u005f'", "<' '<'\u005f'"));
            } catch (ParseException e) {
                // error with init RuleBasedCollator with rules
                // use the default Collator
                collator = Collator.getInstance();
                M_log.warn(this
                        + " AssignmentComparator cannot init RuleBasedCollator. Will use the default Collator instead. "
                        + e);
            }
        } // constructor

        /**
         * caculate the range string for an assignment
         */
        private String getAssignmentRange(Assignment a) {
            String rv = "";
            if (a.getAccess().equals(Assignment.AssignmentAccess.SITE)) {
                // site assignment
                rv = rb.getString("range.allgroups");
            } else {
                try {
                    // get current site
                    Site site = SiteService.getSite(ToolManager.getCurrentPlacement().getContext());
                    for (Iterator k = a.getGroups().iterator(); k.hasNext();) {
                        // announcement by group
                        Group _aGroup = site.getGroup((String) k.next());
                        if (_aGroup != null)
                            rv = rv.concat(_aGroup.getTitle());
                    }
                } catch (Exception ignore) {
                    M_log.warn(this + ":getAssignmentRange" + ignore.getMessage());
                }
            }

            return rv;

        } // getAssignmentRange

        public void setAnon(boolean value) {
            m_anon = value;
        }

        /**
         * implementing the compare function
         *
         * @param o1
         *        The first object
         * @param o2
         *        The second object
         * @return The compare result. 1 is o1 < o2; -1 otherwise
         */
        public int compare(Object o1, Object o2) {
            int result = -1;

            if (m_criteria == null) {
                m_criteria = SORTED_BY_DEFAULT;
            }

            /** *********** for sorting assignments ****************** */
            if (m_criteria.equals(SORTED_BY_DEFAULT)) {
                int s1 = ((Assignment) o1).getPosition_order();
                int s2 = ((Assignment) o2).getPosition_order();

                if (s1 == s2) // we either have 2 assignments with no existing postion_order or a numbering error, so sort by duedate
                {
                    // sorted by the assignment due date
                    Time t1 = ((Assignment) o1).getDueTime();
                    Time t2 = ((Assignment) o2).getDueTime();

                    if (t1 == null) {
                        result = -1;
                    } else if (t2 == null) {
                        result = 1;
                    } else {
                        if (t1.equals(t2)) {
                            t1 = ((Assignment) o1).getTimeCreated();
                            t2 = ((Assignment) o2).getTimeCreated();
                        }
                        if (t1.before(t2)) {
                            result = 1;
                        } else {
                            result = -1;
                        }
                    }
                } else if (s1 == 0 && s2 > 0) // order has not been set on this object, so put it at the bottom of the list
                {
                    result = 1;
                } else if (s2 == 0 && s1 > 0) // making sure assignments with no position_order stay at the bottom
                {
                    result = -1;
                } else // 2 legitimate postion orders
                {
                    result = (s1 < s2) ? -1 : 1;
                }
            }
            if (m_criteria.equals(SORTED_BY_TITLE)) {
                // sorted by the assignment title
                String s1 = ((Assignment) o1).getTitle();
                String s2 = ((Assignment) o2).getTitle();
                result = compareString(s1, s2);
            } else if (m_criteria.equals(SORTED_BY_SECTION)) {
                // sorted by the assignment section
                String s1 = ((Assignment) o1).getSection();
                String s2 = ((Assignment) o2).getSection();
                result = compareString(s1, s2);
            } else if (m_criteria.equals(SORTED_BY_DUEDATE)) {
                // sorted by the assignment due date
                Time t1 = ((Assignment) o1).getDueTime();
                Time t2 = ((Assignment) o2).getDueTime();

                if (t1 == null) {
                    result = -1;
                } else if (t2 == null) {
                    result = 1;
                } else if (t1.before(t2)) {
                    result = -1;
                } else {
                    result = 1;
                }
            } else if (m_criteria.equals(SORTED_BY_OPENDATE)) {
                // sorted by the assignment open
                Time t1 = ((Assignment) o1).getOpenTime();
                Time t2 = ((Assignment) o2).getOpenTime();

                if (t1 == null) {
                    result = -1;
                } else if (t2 == null) {
                    result = 1;
                } else if (t1.before(t2)) {
                    result = -1;
                } else {
                    result = 1;
                }
            } else if (m_criteria.equals(SORTED_BY_ASSIGNMENT_STATUS)) {

                if (AssignmentService.allowAddAssignment(((Assignment) o1).getContext())) {
                    // comparing assignment status
                    result = compareString(((Assignment) o1).getStatus(), ((Assignment) o2).getStatus());
                } else {
                    // comparing submission status
                    AssignmentSubmission s1 = findAssignmentSubmission((Assignment) o1);
                    AssignmentSubmission s2 = findAssignmentSubmission((Assignment) o2);
                    result = s1 == null ? 1 : s2 == null ? -1 : compareString(s1.getStatus(), s2.getStatus());
                }
            } else if (m_criteria.equals(SORTED_BY_NUM_SUBMISSIONS)) {
                // sort by numbers of submissions

                // initialize
                int subNum1 = 0;
                int subNum2 = 0;
                Time t1, t2;

                Iterator submissions1 = AssignmentService.getSubmissions((Assignment) o1).iterator();
                while (submissions1.hasNext()) {
                    AssignmentSubmission submission1 = (AssignmentSubmission) submissions1.next();
                    t1 = submission1.getTimeSubmitted();

                    if (t1 != null)
                        subNum1++;
                }

                Iterator submissions2 = AssignmentService.getSubmissions((Assignment) o2).iterator();
                while (submissions2.hasNext()) {
                    AssignmentSubmission submission2 = (AssignmentSubmission) submissions2.next();
                    t2 = submission2.getTimeSubmitted();

                    if (t2 != null)
                        subNum2++;
                }

                result = (subNum1 > subNum2) ? 1 : -1;

            } else if (m_criteria.equals(SORTED_BY_NUM_UNGRADED)) {
                // sort by numbers of ungraded submissions

                // initialize
                int ungraded1 = 0;
                int ungraded2 = 0;
                Time t1, t2;

                Iterator submissions1 = AssignmentService.getSubmissions((Assignment) o1).iterator();
                while (submissions1.hasNext()) {
                    AssignmentSubmission submission1 = (AssignmentSubmission) submissions1.next();
                    t1 = submission1.getTimeSubmitted();

                    if (t1 != null && !submission1.getGraded())
                        ungraded1++;
                }

                Iterator submissions2 = AssignmentService.getSubmissions((Assignment) o2).iterator();
                while (submissions2.hasNext()) {
                    AssignmentSubmission submission2 = (AssignmentSubmission) submissions2.next();
                    t2 = submission2.getTimeSubmitted();

                    if (t2 != null && !submission2.getGraded())
                        ungraded2++;
                }

                result = (ungraded1 > ungraded2) ? 1 : -1;

            } else if (m_criteria.equals(SORTED_BY_GRADE) || m_criteria.equals(SORTED_BY_SUBMISSION_STATUS)) {
                AssignmentSubmission submission1 = getSubmission(((Assignment) o1).getId(), m_user, "compare",
                        null);
                String grade1 = " ";
                if (submission1 != null && submission1.getGraded() && submission1.getGradeReleased()) {
                    grade1 = submission1.getGrade();
                }

                AssignmentSubmission submission2 = getSubmission(((Assignment) o2).getId(), m_user, "compare",
                        null);
                String grade2 = " ";
                if (submission2 != null && submission2.getGraded() && submission2.getGradeReleased()) {
                    grade2 = submission2.getGrade();
                }

                result = compareString(grade1, grade2);
            } else if (m_criteria.equals(SORTED_BY_MAX_GRADE)) {
                String maxGrade1 = maxGrade(((Assignment) o1).getContent().getTypeOfGrade(), (Assignment) o1);
                String maxGrade2 = maxGrade(((Assignment) o2).getContent().getTypeOfGrade(), (Assignment) o2);

                try {
                    // do integer comparation inside point grade type
                    int max1 = Integer.parseInt(maxGrade1);
                    int max2 = Integer.parseInt(maxGrade2);
                    result = (max1 < max2) ? -1 : 1;
                } catch (NumberFormatException e) {
                    // otherwise do an alpha-compare
                    result = compareString(maxGrade1, maxGrade2);
                }
            }
            // group related sorting
            else if (m_criteria.equals(SORTED_BY_FOR)) {
                // sorted by the public view attribute
                String factor1 = getAssignmentRange((Assignment) o1);
                String factor2 = getAssignmentRange((Assignment) o2);
                result = compareString(factor1, factor2);
            } else if (m_criteria.equals(SORTED_BY_GROUP_TITLE)) {
                // sorted by the group title
                String factor1 = ((Group) o1).getTitle();
                String factor2 = ((Group) o2).getTitle();
                result = compareString(factor1, factor2);
            } else if (m_criteria.equals(SORTED_BY_GROUP_DESCRIPTION)) {
                // sorted by the group description
                String factor1 = ((Group) o1).getDescription();
                String factor2 = ((Group) o2).getDescription();
                if (factor1 == null) {
                    factor1 = "";
                }
                if (factor2 == null) {
                    factor2 = "";
                }
                result = compareString(factor1, factor2);
            }
            /** ***************** for sorting submissions in instructor grade assignment view ************* */
            else if (m_criteria.equals(SORTED_GRADE_SUBMISSION_CONTENTREVIEW)) {
                SubmitterSubmission u1 = (SubmitterSubmission) o1;
                SubmitterSubmission u2 = (SubmitterSubmission) o2;
                if (u1 == null || u2 == null) {
                    result = 1;
                } else {
                    AssignmentSubmission s1 = u1.getSubmission();
                    AssignmentSubmission s2 = u2.getSubmission();

                    if (s1 == null) {
                        result = -1;
                    } else if (s2 == null) {
                        result = 1;
                    } else {
                        int score1 = u1.getSubmission().getReviewScore();
                        int score2 = u2.getSubmission().getReviewScore();
                        result = (Integer.valueOf(score1)).intValue() > (Integer.valueOf(score2)).intValue() ? 1
                                : -1;
                    }
                }

            } else if (m_criteria.equals(SORTED_GRADE_SUBMISSION_BY_LASTNAME)) {
                // sorted by the submitters sort name
                SubmitterSubmission u1 = (SubmitterSubmission) o1;
                SubmitterSubmission u2 = (SubmitterSubmission) o2;

                if (u1 == null || u2 == null || (u1.getUser() == null && u1.getGroup() == null)
                        || (u2.getUser() == null && u2.getGroup() == null)) {
                    result = 1;
                } else if (m_anon) {
                    String anon1 = u1.getSubmission().getAnonymousSubmissionId();
                    String anon2 = u2.getSubmission().getAnonymousSubmissionId();
                    result = compareString(anon1, anon2);
                } else {
                    String lName1 = u1.getUser() == null ? u1.getGroup().getTitle() : u1.getUser().getSortName();
                    String lName2 = u2.getUser() == null ? u2.getGroup().getTitle() : u2.getUser().getSortName();
                    result = compareString(lName1, lName2);
                }
            } else if (m_criteria.equals(SORTED_GRADE_SUBMISSION_BY_SUBMIT_TIME)) {
                // sorted by submission time
                SubmitterSubmission u1 = (SubmitterSubmission) o1;
                SubmitterSubmission u2 = (SubmitterSubmission) o2;

                if (u1 == null || u2 == null) {
                    result = -1;
                } else {
                    AssignmentSubmission s1 = u1.getSubmission();
                    AssignmentSubmission s2 = u2.getSubmission();

                    if (s1 == null || s1.getTimeSubmitted() == null) {
                        result = -1;
                    } else if (s2 == null || s2.getTimeSubmitted() == null) {
                        result = 1;
                    } else if (s1.getTimeSubmitted().before(s2.getTimeSubmitted())) {
                        result = -1;
                    } else {
                        result = 1;
                    }
                }
            } else if (m_criteria.equals(SORTED_GRADE_SUBMISSION_BY_STATUS)) {
                // sort by submission status
                SubmitterSubmission u1 = (SubmitterSubmission) o1;
                SubmitterSubmission u2 = (SubmitterSubmission) o2;

                String status1 = "";
                String status2 = "";

                if (u1 == null) {
                    status1 = rb.getString("listsub.nosub");
                } else {
                    AssignmentSubmission s1 = u1.getSubmission();
                    if (s1 == null) {
                        status1 = rb.getString("listsub.nosub");
                    } else {
                        status1 = s1.getStatus();
                    }
                }

                if (u2 == null) {
                    status2 = rb.getString("listsub.nosub");
                } else {
                    AssignmentSubmission s2 = u2.getSubmission();
                    if (s2 == null) {
                        status2 = rb.getString("listsub.nosub");
                    } else {
                        status2 = s2.getStatus();
                    }
                }

                result = compareString(status1, status2);
            } else if (m_criteria.equals(SORTED_GRADE_SUBMISSION_BY_GRADE)) {
                // sort by submission status
                SubmitterSubmission u1 = (SubmitterSubmission) o1;
                SubmitterSubmission u2 = (SubmitterSubmission) o2;

                if (u1 == null || u2 == null) {
                    result = -1;
                } else {
                    AssignmentSubmission s1 = u1.getSubmission();
                    AssignmentSubmission s2 = u2.getSubmission();

                    //sort by submission grade
                    if (s1 == null) {
                        result = -1;
                    } else if (s2 == null) {
                        result = 1;
                    } else {
                        String grade1 = s1.getGrade();
                        String grade2 = s2.getGrade();
                        if (grade1 == null) {
                            grade1 = "";
                        }
                        if (grade2 == null) {
                            grade2 = "";
                        }

                        // if scale is points
                        if ((s1.getAssignment().getContent().getTypeOfGrade() == 3)
                                && ((s2.getAssignment().getContent().getTypeOfGrade() == 3))) {
                            if ("".equals(grade1)) {
                                result = -1;
                            } else if ("".equals(grade2)) {
                                result = 1;
                            } else {
                                result = compareDouble(grade1, grade2);
                            }
                        } else {
                            result = compareString(grade1, grade2);
                        }
                    }
                }
            } else if (m_criteria.equals(SORTED_GRADE_SUBMISSION_BY_RELEASED)) {
                // sort by submission status
                SubmitterSubmission u1 = (SubmitterSubmission) o1;
                SubmitterSubmission u2 = (SubmitterSubmission) o2;

                if (u1 == null || u2 == null) {
                    result = -1;
                } else {
                    AssignmentSubmission s1 = u1.getSubmission();
                    AssignmentSubmission s2 = u2.getSubmission();

                    if (s1 == null) {
                        result = -1;
                    } else if (s2 == null) {
                        result = 1;
                    } else {
                        // sort by submission released
                        String released1 = (Boolean.valueOf(s1.getGradeReleased())).toString();
                        String released2 = (Boolean.valueOf(s2.getGradeReleased())).toString();

                        result = compareString(released1, released2);
                    }
                }
            }
            /****** for other sort on submissions **/
            else if (m_criteria.equals(SORTED_SUBMISSION_BY_LASTNAME)) {
                // sorted by the submitters sort name
                AssignmentSubmission _a1 = (AssignmentSubmission) o1;
                AssignmentSubmission _a2 = (AssignmentSubmission) o2;
                String _s1 = "";
                String _s2 = "";

                if (_a1.getAssignment().isGroup()) {
                    try {
                        Site site = SiteService.getSite(_a1.getAssignment().getContext());
                        _s1 = site.getGroup(_a1.getSubmitterId()).getTitle();
                    } catch (Throwable _dfef) {
                    }
                } else {
                    try {
                        _s1 = UserDirectoryService.getUser(_a1.getSubmitterId()).getSortName();
                    } catch (UserNotDefinedException e) {
                        M_log.warn(this + ": cannot find user id=" + _a1.getSubmitterId() + e.getMessage() + "");
                    }
                }
                if (_a2.getAssignment().isGroup()) {
                    try {
                        Site site = SiteService.getSite(_a2.getAssignment().getContext());
                        _s2 = site.getGroup(_a2.getSubmitterId()).getTitle();
                    } catch (Throwable _dfef) { // TODO empty exception block
                    }
                } else {
                    try {
                        _s2 = UserDirectoryService.getUser(_a2.getSubmitterId()).getSortName();
                    } catch (UserNotDefinedException e) {
                        M_log.warn(this + ": cannot find user id=" + _a2.getSubmitterId() + e.getMessage() + "");
                    }
                }

                result = _s1.compareTo(_s2); //compareString(submitters1, submitters2);
            } else if (m_criteria.equals(SORTED_SUBMISSION_BY_SUBMIT_TIME)) {
                // sorted by submission time
                Time t1 = ((AssignmentSubmission) o1).getTimeSubmitted();
                Time t2 = ((AssignmentSubmission) o2).getTimeSubmitted();

                if (t1 == null) {
                    result = -1;
                } else if (t2 == null) {
                    result = 1;
                } else if (t1.before(t2)) {
                    result = -1;
                } else {
                    result = 1;
                }
            } else if (m_criteria.equals(SORTED_SUBMISSION_BY_STATUS)) {
                // sort by submission status
                result = compareString(((AssignmentSubmission) o1).getStatus(),
                        ((AssignmentSubmission) o2).getStatus());
            } else if (m_criteria.equals(SORTED_SUBMISSION_BY_GRADE)) {
                // sort by submission grade
                String grade1 = ((AssignmentSubmission) o1).getGrade();
                String grade2 = ((AssignmentSubmission) o2).getGrade();
                if (grade1 == null) {
                    grade1 = "";
                }
                if (grade2 == null) {
                    grade2 = "";
                }

                // if scale is points
                if ((((AssignmentSubmission) o1).getAssignment().getContent().getTypeOfGrade() == 3)
                        && ((((AssignmentSubmission) o2).getAssignment().getContent().getTypeOfGrade() == 3))) {
                    if ("".equals(grade1)) {
                        result = -1;
                    } else if ("".equals(grade2)) {
                        result = 1;
                    } else {
                        result = compareDouble(grade1, grade2);
                    }
                } else {
                    result = compareString(grade1, grade2);
                }
            } else if (m_criteria.equals(SORTED_SUBMISSION_BY_GRADE)) {
                // sort by submission grade
                String grade1 = ((AssignmentSubmission) o1).getGrade();
                String grade2 = ((AssignmentSubmission) o2).getGrade();
                if (grade1 == null) {
                    grade1 = "";
                }
                if (grade2 == null) {
                    grade2 = "";
                }

                // if scale is points
                if ((((AssignmentSubmission) o1).getAssignment().getContent().getTypeOfGrade() == 3)
                        && ((((AssignmentSubmission) o2).getAssignment().getContent().getTypeOfGrade() == 3))) {
                    if ("".equals(grade1)) {
                        result = -1;
                    } else if ("".equals(grade2)) {
                        result = 1;
                    } else {
                        result = compareDouble(grade1, grade2);
                    }
                } else {
                    result = compareString(grade1, grade2);
                }
            } else if (m_criteria.equals(SORTED_SUBMISSION_BY_MAX_GRADE)) {
                Assignment a1 = ((AssignmentSubmission) o1).getAssignment();
                Assignment a2 = ((AssignmentSubmission) o2).getAssignment();
                String maxGrade1 = maxGrade(a1.getContent().getTypeOfGrade(), a1);
                String maxGrade2 = maxGrade(a2.getContent().getTypeOfGrade(), a2);

                try {
                    // do integer comparation inside point grade type
                    int max1 = Integer.parseInt(maxGrade1);
                    int max2 = Integer.parseInt(maxGrade2);
                    result = (max1 < max2) ? -1 : 1;
                } catch (NumberFormatException e) {
                    M_log.warn(this + ":AssignmentComparator compare" + e.getMessage());
                    // otherwise do an alpha-compare
                    result = maxGrade1.compareTo(maxGrade2);
                }
            } else if (m_criteria.equals(SORTED_SUBMISSION_BY_RELEASED)) {
                // sort by submission released
                String released1 = (Boolean.valueOf(((AssignmentSubmission) o1).getGradeReleased())).toString();
                String released2 = (Boolean.valueOf(((AssignmentSubmission) o2).getGradeReleased())).toString();

                result = compareString(released1, released2);
            } else if (m_criteria.equals(SORTED_SUBMISSION_BY_ASSIGNMENT)) {
                // sort by submission's assignment
                String title1 = ((AssignmentSubmission) o1).getAssignment().getContent().getTitle();
                String title2 = ((AssignmentSubmission) o2).getAssignment().getContent().getTitle();

                result = compareString(title1, title2);
            }
            /*************** sort user by sort name ***************/
            else if (m_criteria.equals(SORTED_USER_BY_SORTNAME)) {
                // sort by user's sort name
                String name1 = ((User) o1).getSortName();
                String name2 = ((User) o2).getSortName();

                result = compareString(name1, name2);
            }

            // sort ascending or descending
            if (!Boolean.valueOf(m_asc)) {
                result = -result;
            }
            return result;
        }

        /**
         * returns AssignmentSubmission object for given assignment by current user
         * @param a
         * @return
         */
        protected AssignmentSubmission findAssignmentSubmission(Assignment a) {
            AssignmentSubmission rv = null;
            try {
                rv = AssignmentService.getSubmission(a.getReference(), UserDirectoryService.getCurrentUser());
            } catch (IdUnusedException e) {
                M_log.warn(this + "compare: "
                        + rb.getFormattedMessage("cannotfin_assignment", new Object[] { a.getReference() }));
            } catch (PermissionException e) {

            }
            return rv;
        }

        /**
         * Compare two strings as double values. Deal with the case when either of the strings cannot be parsed as double value.
         * @param grade1
         * @param grade2
         * @return
         */
        private int compareDouble(String grade1, String grade2) {
            int result;
            try {
                result = (Double.valueOf(grade1)).doubleValue() > (Double.valueOf(grade2)).doubleValue() ? 1 : -1;
            } catch (Exception formatException) {
                // in case either grade1 or grade2 cannot be parsed as Double
                result = compareString(grade1, grade2);
                M_log.warn(this + ":AssignmentComparator compareDouble " + formatException.getMessage());
            }
            return result;
        } // compareDouble

        private int compareString(String s1, String s2) {
            int result;
            if (s1 == null && s2 == null) {
                result = 0;
            } else if (s2 == null) {
                result = 1;
            } else if (s1 == null) {
                result = -1;
            } else {
                result = collator.compare(s1.toLowerCase(), s2.toLowerCase());
            }
            return result;
        }

        /**
         * get assignment maximun grade available based on the assignment grade type
         *
         * @param gradeType
         *        The int value of grade type
         * @param a
         *        The assignment object
         * @return The max grade String
         */
        private String maxGrade(int gradeType, Assignment a) {
            String maxGrade = "";

            if (gradeType == -1) {
                // Grade type not set
                maxGrade = rb.getString("granotset");
            } else if (gradeType == 1) {
                // Ungraded grade type
                maxGrade = rb.getString("gen.nograd");
            } else if (gradeType == 2) {
                // Letter grade type
                maxGrade = "A";
            } else if (gradeType == 3) {
                // Score based grade type
                maxGrade = Integer.toString(a.getContent().getMaxGradePoint());
            } else if (gradeType == 4) {
                // Pass/fail grade type
                maxGrade = rb.getString("pass");
            } else if (gradeType == 5) {
                // Grade type that only requires a check
                maxGrade = rb.getString("check");
            }

            return maxGrade;

        } // maxGrade

    } // DiscussionComparator

    /**
     * Fire up the permissions editor
     */
    public void doPermissions(RunData data) {
        SessionState state = ((JetspeedRunData) data).getPortletSessionState(((JetspeedRunData) data).getJs_peid());
        if (!alertGlobalNavigation(state, data)) {
            // we are changing the view, so start with first page again.
            resetPaging(state);

            // clear search form
            doSearch_clear(data, null);

            if (SiteService.allowUpdateSite((String) state.getAttribute(STATE_CONTEXT_STRING))) {
                // get into helper mode with this helper tool
                startHelper(data.getRequest(), "sakai.permissions.helper");

                String contextString = (String) state.getAttribute(STATE_CONTEXT_STRING);
                String siteRef = SiteService.siteReference(contextString);

                // setup for editing the permissions of the site for this tool, using the roles of this site, too
                state.setAttribute(PermissionsHelper.TARGET_REF, siteRef);

                // ... with this description
                state.setAttribute(PermissionsHelper.DESCRIPTION,
                        rb.getString("setperfor") + " " + SiteService.getSiteDisplay(contextString));

                // ... showing only locks that are prpefixed with this
                state.setAttribute(PermissionsHelper.PREFIX, "asn.");

                // ... pass the resource loader object
                ResourceLoader pRb = new ResourceLoader("permissions");
                HashMap<String, String> pRbValues = new HashMap<String, String>();
                for (Iterator<Map.Entry<String, Object>> iEntries = pRb.entrySet().iterator(); iEntries
                        .hasNext();) {
                    Map.Entry<String, Object> entry = iEntries.next();
                    pRbValues.put(entry.getKey(), (String) entry.getValue());

                }
                state.setAttribute("permissionDescriptions", pRbValues);

                String groupAware = ToolManager.getCurrentTool().getRegisteredConfig().getProperty("groupAware");
                state.setAttribute("groupAware", groupAware != null ? Boolean.valueOf(groupAware) : Boolean.FALSE);

                // disable auto-updates while leaving the list view
                justDelivered(state);
            }

            // reset the global navigaion alert flag
            if (state.getAttribute(ALERT_GLOBAL_NAVIGATION) != null) {
                state.removeAttribute(ALERT_GLOBAL_NAVIGATION);
            }

            // switching back to assignment list view
            state.setAttribute(STATE_SELECTED_VIEW, MODE_LIST_ASSIGNMENTS);
            doList_assignments(data);
        }

    } // doPermissions

    /**
     * transforms the Iterator to List
     */
    private List iterator_to_list(Iterator l) {
        List v = new ArrayList();
        while (l.hasNext()) {
            v.add(l.next());
        }
        return v;
    } // iterator_to_list

    /**
     * Implement this to return alist of all the resources that there are to page. Sort them as appropriate.
     */
    protected List readResourcesPage(SessionState state, int first, int last) {

        List returnResources = (List) state.getAttribute(STATE_PAGEING_TOTAL_ITEMS);

        PagingPosition page = new PagingPosition(first, last);
        page.validate(returnResources.size());
        returnResources = returnResources.subList(page.getFirst() - 1, page.getLast());

        return returnResources;

    } // readAllResources

    /*
     * (non-Javadoc)
     *
     * @see org.sakaiproject.cheftool.PagedResourceActionII#sizeResources(org.sakaiproject.service.framework.session.SessionState)
     */
    protected int sizeResources(SessionState state) {
        String mode = (String) state.getAttribute(STATE_MODE);
        String contextString = (String) state.getAttribute(STATE_CONTEXT_STRING);
        // all the resources for paging
        List returnResources = new ArrayList();

        boolean allowAddAssignment = AssignmentService.allowAddAssignment(contextString);
        if (MODE_LIST_ASSIGNMENTS.equals(mode)) {
            String view = "";

            if (state.getAttribute(STATE_SELECTED_VIEW) != null) {
                view = (String) state.getAttribute(STATE_SELECTED_VIEW);
            }

            if (allowAddAssignment && view.equals(MODE_LIST_ASSIGNMENTS)) {
                // read all Assignments
                returnResources = AssignmentService
                        .getListAssignmentsForContext((String) state.getAttribute(STATE_CONTEXT_STRING));
            } else if (allowAddAssignment && view.equals(MODE_STUDENT_VIEW) || (!allowAddAssignment
                    && AssignmentService.allowAddSubmission((String) state.getAttribute(STATE_CONTEXT_STRING)))) {
                // in the student list view of assignments
                Iterator assignments = AssignmentService.getAssignmentsForContext(contextString);
                Time currentTime = TimeService.newTime();
                while (assignments.hasNext()) {
                    Assignment a = (Assignment) assignments.next();
                    String deleted = a.getProperties().getProperty(ResourceProperties.PROP_ASSIGNMENT_DELETED);
                    if (deleted == null || "".equals(deleted)) {
                        // show not deleted assignments
                        Time openTime = a.getOpenTime();
                        Time visibleTime = a.getVisibleTime();
                        if (((openTime != null && currentTime.after(openTime))
                                || (visibleTime != null && currentTime.after(visibleTime))) && !a.getDraft()) {
                            returnResources.add(a);
                        }
                    } else if (deleted.equalsIgnoreCase(Boolean.TRUE.toString())
                            && (a.getContent()
                                    .getTypeOfSubmission() != Assignment.NON_ELECTRONIC_ASSIGNMENT_SUBMISSION)
                            && getSubmission(a.getReference(), (User) state.getAttribute(STATE_USER),
                                    "sizeResources", state) != null) {
                        // and those deleted but not non-electronic assignments but the user has made submissions to them
                        returnResources.add(a);
                    }
                }
            } else {
                // read all Assignments
                returnResources = AssignmentService
                        .getListAssignmentsForContext((String) state.getAttribute(STATE_CONTEXT_STRING));
            }

            state.setAttribute(HAS_MULTIPLE_ASSIGNMENTS, Boolean.valueOf(returnResources.size() > 1));
        } else if (MODE_INSTRUCTOR_REORDER_ASSIGNMENT.equals(mode)) {
            returnResources = AssignmentService
                    .getListAssignmentsForContext((String) state.getAttribute(STATE_CONTEXT_STRING));
        } else if (MODE_INSTRUCTOR_REPORT_SUBMISSIONS.equals(mode)) {

            initViewSubmissionListOption(state);
            String allOrOneGroup = (String) state.getAttribute(VIEW_SUBMISSION_LIST_OPTION);
            String search = (String) state.getAttribute(VIEW_SUBMISSION_SEARCH);
            Boolean searchFilterOnly = (state.getAttribute(SUBMISSIONS_SEARCH_ONLY) != null
                    && ((Boolean) state.getAttribute(SUBMISSIONS_SEARCH_ONLY)) ? Boolean.TRUE : Boolean.FALSE);

            Boolean has_multiple_groups_for_user = false;
            List submissions = new ArrayList();

            List assignments = iterator_to_list(AssignmentService.getAssignmentsForContext(contextString));
            if (assignments.size() > 0) {
                try {
                    // get the site object first
                    Site site = SiteService.getSite(contextString);
                    for (int j = 0; j < assignments.size(); j++) {
                        Assignment a = (Assignment) assignments.get(j);
                        List<String> submitterIds = AssignmentService.getSubmitterIdList(
                                searchFilterOnly.toString(), allOrOneGroup, search, a.getReference(),
                                contextString);
                        Collection<String> _dupUsers = new ArrayList<String>();
                        if (a.isGroup()) {
                            _dupUsers = usersInMultipleGroups(a, true);
                        }

                        //get the list of users which are allowed to grade this assignment
                        List allowGradeAssignmentUsers = AssignmentService
                                .allowGradeAssignmentUsers(a.getReference());
                        String deleted = a.getProperties().getProperty(ResourceProperties.PROP_ASSIGNMENT_DELETED);
                        if ((deleted == null || "".equals(deleted)) && (!a.getDraft())
                                && AssignmentService.allowGradeSubmission(a.getReference())) {
                            try {
                                List assignmentSubmissions = AssignmentService.getSubmissions(a);
                                for (int k = 0; k < assignmentSubmissions.size(); k++) {
                                    AssignmentSubmission s = (AssignmentSubmission) assignmentSubmissions.get(k);
                                    if (s != null && (s.getSubmitted() || (s.getReturned()
                                            && (s.getTimeLastModified().before(s.getTimeReturned()))))) {
                                        //If the group search is null or if it contains the group
                                        if (submitterIds.contains(s.getSubmitterId())) {
                                            if (a.isGroup()) {
                                                User[] _users = s.getSubmitters();
                                                for (int m = 0; _users != null && m < _users.length; m++) {
                                                    Member member = site.getMember(_users[m].getId());
                                                    if (member != null && member.isActive()) {
                                                        // only include the active student submission
                                                        // conder TODO create temporary submissions
                                                        SubmitterSubmission _new_sub = new SubmitterSubmission(
                                                                _users[m], s);
                                                        _new_sub.setGroup(site.getGroup(s.getSubmitterId()));
                                                        if (_dupUsers.size() > 0
                                                                && _dupUsers.contains(_users[m].getId())) {
                                                            _new_sub.setMultiGroup(true);
                                                            has_multiple_groups_for_user = true;
                                                        }
                                                        submissions.add(_new_sub);
                                                    }
                                                }
                                            } else {
                                                if (s.getSubmitterId() != null && !allowGradeAssignmentUsers
                                                        .contains(s.getSubmitterId())) {
                                                    // find whether the submitter is still an active member of the site
                                                    Member member = site.getMember(s.getSubmitterId());
                                                    if (member != null && member.isActive()) {
                                                        // only include the active student submission
                                                        try {
                                                            SubmitterSubmission _new_sub = new SubmitterSubmission(
                                                                    UserDirectoryService
                                                                            .getUser(s.getSubmitterId()),
                                                                    s);
                                                            submissions.add(_new_sub);
                                                        } catch (UserNotDefinedException e) {
                                                            M_log.warn(this + ":sizeResources cannot find user id="
                                                                    + s.getSubmitterId() + e.getMessage() + "");
                                                        }
                                                    }
                                                }
                                            }
                                        }
                                    } // if-else
                                }
                            } catch (Exception e) {
                                M_log.warn(this + ":sizeResources " + e.getMessage());
                            }
                        }
                    }
                    if (has_multiple_groups_for_user) {
                        addAlert(state, rb.getString("group.user.multiple.error"));
                    }
                } catch (IdUnusedException idUnusedException) {
                    M_log.warn(this + ":sizeResources " + idUnusedException.getMessage() + " site id="
                            + contextString);
                }
            } // end if
            returnResources = submissions;
        } else if (MODE_INSTRUCTOR_GRADE_ASSIGNMENT.equals(mode) || MODE_INSTRUCTOR_GRADE_SUBMISSION.equals(mode)) {
            initViewSubmissionListOption(state);
            String allOrOneGroup = (String) state.getAttribute(VIEW_SUBMISSION_LIST_OPTION);
            String search = (String) state.getAttribute(VIEW_SUBMISSION_SEARCH);
            String aRef = (String) state.getAttribute(EXPORT_ASSIGNMENT_REF);
            Boolean searchFilterOnly = (state.getAttribute(SUBMISSIONS_SEARCH_ONLY) != null
                    && ((Boolean) state.getAttribute(SUBMISSIONS_SEARCH_ONLY)) ? Boolean.TRUE : Boolean.FALSE);
            Assignment assignment = null;

            try {
                assignment = AssignmentService.getAssignment(aRef);
                if (assignment.getProperties().getBooleanProperty(NEW_ASSIGNMENT_CHECK_ANONYMOUS_GRADING) == true) {
                    allOrOneGroup = "all";
                }
            } catch (IdUnusedException ex) {
                M_log.warn(":sizeResources cannot find assignment " + ex.getMessage());
            } catch (PermissionException aPerException) {
                M_log.warn(
                        ":sizeResources: Not allowed to get assignment " + aRef + " " + aPerException.getMessage());
            } catch (EntityPropertyNotDefinedException ex) {
                M_log.warn(":sizeResources: property not defined for assignment  " + aRef + " " + ex.getMessage());
            } catch (EntityPropertyTypeException ex) {
                M_log.warn(
                        ":sizeResources: property type exception for assignment  " + aRef + " " + ex.getMessage());
            }

            if (assignment != null && assignment.isGroup()) {

                Collection<Group> submitterGroups = AssignmentService.getSubmitterGroupList("false", allOrOneGroup,
                        "", aRef, contextString);

                // construct the group-submission list
                if (submitterGroups != null && !submitterGroups.isEmpty()) {
                    for (Iterator<Group> iSubmitterGroupsIterator = submitterGroups
                            .iterator(); iSubmitterGroupsIterator.hasNext();) {
                        Group gId = iSubmitterGroupsIterator.next();
                        // Allow sections to be used for group assigments - https://jira.sakaiproject.org/browse/SAK-22425
                        //if (gId.getProperties().get(GROUP_SECTION_PROPERTY) == null) {
                        try {
                            AssignmentSubmission sub = AssignmentService.getSubmission(aRef, gId.getId());
                            returnResources.add(new SubmitterSubmission(gId, sub)); // UserSubmission accepts either User or Group
                        } catch (IdUnusedException subIdException) {
                            M_log.warn(this + ".sizeResources: looking for submission for unused assignment id "
                                    + aRef + subIdException.getMessage());
                        } catch (PermissionException subPerException) {
                            M_log.warn(this
                                    + ".sizeResources: cannot have permission to access submission of assignment "
                                    + aRef + " of group " + gId.getId());
                        }
                        //}
                    }
                }

            } else {

                //List<String> submitterIds = AssignmentService.getSubmitterIdList(searchFilterOnly.toString(), allOrOneGroup, search, aRef, contextString);
                Map<User, AssignmentSubmission> submitters = AssignmentService
                        .getSubmitterMap(searchFilterOnly.toString(), allOrOneGroup, search, aRef, contextString);

                // construct the user-submission list
                for (User u : submitters.keySet()) {
                    String uId = u.getId();

                    AssignmentSubmission sub = submitters.get(u);
                    SubmitterSubmission us = new SubmitterSubmission(u, sub);
                    String submittedById = (String) sub.getProperties().get(AssignmentSubmission.SUBMITTER_USER_ID);
                    if (submittedById != null) {
                        try {
                            us.setSubmittedBy(UserDirectoryService.getUser(submittedById));
                        } catch (UserNotDefinedException ex1) {
                            M_log.warn(this + ":sizeResources cannot find submitter id=" + uId + ex1.getMessage());
                        }
                    }
                    returnResources.add(us);
                }
            }
        }

        // sort them all
        String ascending = "true";
        String sort = "";
        ascending = (String) state.getAttribute(SORTED_ASC);
        sort = (String) state.getAttribute(SORTED_BY);
        if (MODE_INSTRUCTOR_GRADE_ASSIGNMENT.equals(mode) || MODE_INSTRUCTOR_GRADE_SUBMISSION.equals(mode)
                && (sort == null || !sort.startsWith("sorted_grade_submission_by"))) {
            ascending = (String) state.getAttribute(SORTED_GRADE_SUBMISSION_ASC);
            sort = (String) state.getAttribute(SORTED_GRADE_SUBMISSION_BY);
        } else if (MODE_INSTRUCTOR_REPORT_SUBMISSIONS.equals(mode)
                && (sort == null || sort.startsWith("sorted_submission_by"))) {
            ascending = (String) state.getAttribute(SORTED_SUBMISSION_ASC);
            sort = (String) state.getAttribute(SORTED_SUBMISSION_BY);
        } else {
            ascending = (String) state.getAttribute(SORTED_ASC);
            sort = (String) state.getAttribute(SORTED_BY);
        }

        if ((returnResources.size() > 1) && !MODE_INSTRUCTOR_VIEW_STUDENTS_ASSIGNMENT.equals(mode)) {
            AssignmentComparator ac = new AssignmentComparator(state, sort, ascending);

            // figure out if we have to sort by anonymous id
            if (SORTED_GRADE_SUBMISSION_BY_LASTNAME.equals(sort) && (MODE_INSTRUCTOR_GRADE_ASSIGNMENT.equals(mode)
                    || MODE_INSTRUCTOR_GRADE_SUBMISSION.equals(mode))) {
                String aRef = (String) state.getAttribute(EXPORT_ASSIGNMENT_REF);
                try {
                    Assignment assignment = AssignmentService.getAssignment(aRef);
                    if (assignment != null) {
                        ResourceProperties props = assignment.getProperties();
                        if (props != null) {
                            ac.setAnon(props.getBooleanProperty(NEW_ASSIGNMENT_CHECK_ANONYMOUS_GRADING));
                        }
                    }
                } catch (IdUnusedException iue) {
                    // ignore, continue with default sort
                } catch (PermissionException pe) {
                    // ignore, continue with default sort
                } catch (EntityPropertyNotDefinedException epnde) {
                    // ignore, continue with default sort
                } catch (EntityPropertyTypeException epte) {
                    // ignore, continue with default sort
                }
            }

            try {
                Collections.sort(returnResources, ac);
            } catch (Exception e) {
                // log exception during sorting for helping debugging
                M_log.warn(this + ":sizeResources mode=" + mode + " sort=" + sort + " ascending=" + ascending + " "
                        + e.getStackTrace());
            }
        }

        // record the total item number
        state.setAttribute(STATE_PAGEING_TOTAL_ITEMS, returnResources);

        return returnResources.size();
    }

    public void doView(RunData data) {
        SessionState state = ((JetspeedRunData) data).getPortletSessionState(((JetspeedRunData) data).getJs_peid());
        if (!alertGlobalNavigation(state, data)) {
            // we are changing the view, so start with first page again.
            resetPaging(state);

            // clear search form
            doSearch_clear(data, null);

            String viewMode = data.getParameters().getString("view");
            state.setAttribute(STATE_SELECTED_VIEW, viewMode);

            if (MODE_LIST_ASSIGNMENTS.equals(viewMode)) {
                doList_assignments(data);
            } else if (MODE_INSTRUCTOR_VIEW_STUDENTS_ASSIGNMENT.equals(viewMode)) {
                doView_students_assignment(data);
            } else if (MODE_INSTRUCTOR_REPORT_SUBMISSIONS.equals(viewMode)) {
                doReport_submissions(data);
            } else if (MODE_STUDENT_VIEW.equals(viewMode)) {
                doView_student(data);
            }

            // reset the global navigaion alert flag
            if (state.getAttribute(ALERT_GLOBAL_NAVIGATION) != null) {
                state.removeAttribute(ALERT_GLOBAL_NAVIGATION);
            }
        }

    } // doView

    /**
     * put those variables related to 2ndToolbar into context
     */
    private void add2ndToolbarFields(RunData data, Context context) {
        SessionState state = ((JetspeedRunData) data).getPortletSessionState(((JetspeedRunData) data).getJs_peid());

        context.put("totalPageNumber", Integer.valueOf(totalPageNumber(state)));
        context.put("form_search", FORM_SEARCH);
        context.put("formPageNumber", FORM_PAGE_NUMBER);
        context.put("prev_page_exists", state.getAttribute(STATE_PREV_PAGE_EXISTS));
        context.put("next_page_exists", state.getAttribute(STATE_NEXT_PAGE_EXISTS));
        context.put("current_page", state.getAttribute(STATE_CURRENT_PAGE));
        context.put("selectedView", state.getAttribute(STATE_MODE));

    } // add2ndToolbarFields

    /**
     * valid grade for point based type
     * returns a double value in a string from the localized input
     */
    private String validPointGrade(SessionState state, String grade, int factor) {
        if (grade != null && !"".equals(grade)) {
            if (grade.startsWith("-")) {
                // check for negative sign
                addAlert(state, rb.getString("plesuse3"));
            } else {
                int dec = (int) Math.log10(factor);
                NumberFormat nbFormat = FormattedText.getNumberFormat();
                DecimalFormat dcFormat = (DecimalFormat) nbFormat;
                String decSeparator = FormattedText.getDecimalSeparator();

                // only the right decimal separator is allowed and no other grouping separator
                if ((",".equals(decSeparator) && grade.indexOf(".") != -1)
                        || (".".equals(decSeparator) && grade.indexOf(",") != -1) || grade.indexOf(" ") != -1) {
                    addAlert(state, rb.getString("plesuse1"));
                    return grade;
                }

                // parse grade from localized number format
                int index = grade.indexOf(decSeparator);
                if (index != -1) {
                    // when there is decimal points inside the grade, scale the number by "factor"
                    // but only one decimal place is supported
                    // for example, change 100.0 to 1000
                    if (!decSeparator.equals(grade)) {
                        if (grade.length() > index + dec + 1) {
                            // if there are more than "factor" decimal points
                            addAlert(state,
                                    rb.getFormattedMessage("plesuse2", new Object[] { String.valueOf(dec) }));
                        } else {
                            // decimal points is the only allowed character inside grade
                            // replace it with '1', and try to parse the new String into int
                            String zeros = "";
                            for (int i = 0; i < dec; i++) {
                                zeros = zeros.concat("0");
                            }
                            String gradeString = grade.endsWith(decSeparator)
                                    ? grade.substring(0, index).concat(zeros)
                                    : grade.substring(0, index).concat(grade.substring(index + 1));
                            try {
                                nbFormat.parse(gradeString);
                                try {
                                    Integer.parseInt(gradeString);
                                } catch (NumberFormatException e) {
                                    M_log.warn(this + ":validPointGrade " + e.getMessage());
                                    alertInvalidPoint(state, gradeString, factor);
                                }
                            } catch (ParseException e) {
                                M_log.warn(this + ":validPointGrade " + e.getMessage());
                                addAlert(state, rb.getString("plesuse1"));
                            }
                        }
                    } else {
                        // grade is decSeparator
                        addAlert(state, rb.getString("plesuse1"));
                    }
                } else {
                    // There is no decimal point; should be int number
                    String gradeString = grade;
                    for (int i = 0; i < dec; i++) {
                        gradeString = gradeString.concat("0");
                    }
                    try {
                        nbFormat.parse(gradeString);
                        try {
                            Integer.parseInt(gradeString);
                        } catch (NumberFormatException e) {
                            M_log.warn(this + ":validPointGrade " + e.getMessage());
                            alertInvalidPoint(state, gradeString, factor);
                        }
                    } catch (ParseException e) {
                        M_log.warn(this + ":validPointGrade " + e.getMessage());
                        addAlert(state, rb.getString("plesuse1"));
                    }
                }
            }
        }
        return grade;

    }

    /**
     * valid grade for point based type
     */
    private void validLetterGrade(SessionState state, String grade) {
        String VALID_CHARS_FOR_LETTER_GRADE = " ABCDEFGHIJKLMNOPQRSTUVWXYZ+-";
        boolean invalid = false;
        if (grade != null) {
            grade = grade.toUpperCase();
            for (int i = 0; i < grade.length() && !invalid; i++) {
                char c = grade.charAt(i);
                if (VALID_CHARS_FOR_LETTER_GRADE.indexOf(c) == -1) {
                    invalid = true;
                }
            }
            if (invalid) {
                // -------- SAK-24199 (SAKU-274) by Shoji Kajita
                addAlert(state, rb.getFormattedMessage("plesuse0", new Object[] { grade }));
                // --------
            }
        }
    }

    private void alertInvalidPoint(SessionState state, String grade, int factor) {
        String decSeparator = FormattedText.getDecimalSeparator();

        String VALID_CHARS_FOR_INT = "-01234567890";

        boolean invalid = false;
        // case 1: contains invalid char for int
        for (int i = 0; i < grade.length() && !invalid; i++) {
            char c = grade.charAt(i);
            if (VALID_CHARS_FOR_INT.indexOf(c) == -1) {
                invalid = true;
            }
        }
        if (invalid) {
            addAlert(state, rb.getString("plesuse1"));
        } else {
            int dec = (int) Math.log10(factor);
            int maxInt = Integer.MAX_VALUE / factor;
            int maxDec = Integer.MAX_VALUE - maxInt * factor;
            // case 2: Due to our internal scaling, input String is larger than Integer.MAX_VALUE/10
            addAlert(state,
                    rb.getFormattedMessage("plesuse4",
                            new Object[] {
                                    grade.substring(0, grade.length() - dec) + decSeparator
                                            + grade.substring(grade.length() - dec),
                                    maxInt + decSeparator + maxDec }));
        }
    }

    /**
     * display grade properly
     */
    private String displayGrade(SessionState state, String grade, int factor) {
        if (state.getAttribute(STATE_MESSAGE) == null) {
            if (grade != null && (grade.length() >= 1)) {
                int dec = (int) Math.log10(factor);
                NumberFormat nbFormat = FormattedText.getNumberFormat(dec, dec, false);
                DecimalFormat dcformat = (DecimalFormat) nbFormat;
                String decSeparator = FormattedText.getDecimalSeparator();

                if (grade.indexOf(decSeparator) != -1) {
                    if (grade.startsWith(decSeparator)) {
                        grade = "0".concat(grade);
                    } else if (grade.endsWith(decSeparator)) {
                        for (int i = 0; i < dec; i++) {
                            grade = grade.concat("0");
                        }
                    }
                } else {
                    try {
                        Integer.parseInt(grade);
                        int length = grade.length();
                        if (length > dec) {
                            grade = grade.substring(0, grade.length() - dec) + decSeparator
                                    + grade.substring(grade.length() - dec);
                        } else {
                            String newGrade = "0".concat(decSeparator);
                            for (int i = length; i < dec; i++) {
                                newGrade = newGrade.concat("0");
                            }
                            grade = newGrade.concat(grade);
                        }
                    } catch (NumberFormatException e) {
                        // alert
                        alertInvalidPoint(state, grade, factor);
                        M_log.warn(this + ":displayGrade cannot parse grade into integer grade = " + grade
                                + e.getMessage());
                    }
                }
                try {
                    // show grade in localized number format
                    Double dblGrade = dcformat.parse(grade).doubleValue();
                    grade = nbFormat.format(dblGrade);
                } catch (Exception e) {
                    // alert
                    alertInvalidPoint(state, grade, factor);
                    M_log.warn(this + ":displayGrade cannot parse grade into integer grade = " + grade
                            + e.getMessage());
                }
            } else {
                grade = "";
            }
        }
        return grade;

    } // displayGrade

    /**
     * scale the point value by "factor" if there is a valid point grade
     */
    private String scalePointGrade(SessionState state, String point, int factor) {
        String decSeparator = FormattedText.getDecimalSeparator();
        int dec = (int) Math.log10(factor);

        point = validPointGrade(state, point, factor);

        if (state.getAttribute(STATE_MESSAGE) == null) {
            if (point != null && (point.length() >= 1)) {
                // when there is decimal points inside the grade, scale the number by "factor"
                // but only one decimal place is supported
                // for example, change 100.0 to 1000
                int index = point.indexOf(decSeparator);
                if (index != -1) {
                    if (index == 0) {
                        // if the point is the first char, add a 0 for the integer part
                        point = "0".concat(point.substring(1));
                    } else if (index < point.length() - 1) {
                        // adjust the number of decimals, adding 0's to the end 
                        int length = point.length() - index - 1;
                        for (int i = length; i < dec; i++) {
                            point = point + "0";
                        }

                        // use scale integer for gradePoint
                        point = point.substring(0, index) + point.substring(index + 1);
                    } else {
                        // decimal point is the last char
                        point = point.substring(0, index);
                        for (int i = 0; i < dec; i++) {
                            point = point + "0";
                        }
                    }
                } else {
                    // if there is no decimal place, scale up the integer by "factor"
                    for (int i = 0; i < dec; i++) {
                        point = point + "0";
                    }
                }

                // filter out the "zero grade"
                if ("00".equals(point)) {
                    point = "0";
                }
            }
        }

        if (StringUtils.trimToNull(point) != null) {
            try {
                point = Integer.valueOf(point).toString();
            } catch (Exception e) {
                M_log.warn(this + " scalePointGrade: cannot parse " + point + " into integer. " + e.getMessage());
            }
        }
        return point;

    } // scalePointGrade

    /**
     * Processes formatted text that is coming back from the browser (from the formatted text editing widget).
     *
     * @param state
     *        Used to pass in any user-visible alerts or errors when processing the text
     * @param strFromBrowser
     *        The string from the browser
     * @param checkForFormattingErrors
     *        Whether to check for formatted text errors - if true, look for errors in the formatted text. If false, accept the formatted text without looking for errors.
     * @return The formatted text
     */
    private String processFormattedTextFromBrowser(SessionState state, String strFromBrowser,
            boolean checkForFormattingErrors) {
        StringBuilder alertMsg = new StringBuilder();
        boolean replaceWhitespaceTags = true;
        String text = FormattedText.processFormattedText(strFromBrowser, alertMsg, checkForFormattingErrors,
                replaceWhitespaceTags);
        if (alertMsg.length() > 0)
            addAlert(state, alertMsg.toString());
        return text;
    }

    /**
     * Processes the given assignmnent feedback text, as returned from the user's browser. Makes sure that the Chef-style markup {{like this}} is properly balanced.
     */
    private String processAssignmentFeedbackFromBrowser(SessionState state, String strFromBrowser) {
        if (strFromBrowser == null || strFromBrowser.length() == 0)
            return strFromBrowser;

        StringBuilder buf = new StringBuilder(strFromBrowser);
        int pos = -1;
        int numopentags = 0;

        while ((pos = buf.indexOf("{{")) != -1) {
            buf.replace(pos, pos + "{{".length(), "<ins>");
            numopentags++;
        }

        while ((pos = buf.indexOf("}}")) != -1) {
            buf.replace(pos, pos + "}}".length(), "</ins>");
            numopentags--;
        }

        while (numopentags > 0) {
            buf.append("</ins>");
            numopentags--;
        }

        boolean checkForFormattingErrors = true; // so that grading isn't held up by formatting errors
        buf = new StringBuilder(processFormattedTextFromBrowser(state, buf.toString(), checkForFormattingErrors));

        while ((pos = buf.indexOf("<ins>")) != -1) {
            buf.replace(pos, pos + "<ins>".length(), "{{");
        }

        while ((pos = buf.indexOf("</ins>")) != -1) {
            buf.replace(pos, pos + "</ins>".length(), "}}");
        }

        return buf.toString();
    }

    /**
     * Called to deal with old Chef-style assignment feedback annotation, {{like this}}.
     *
     * @param value
     *        A formatted text string that may contain {{}} style markup
     * @return HTML ready to for display on a browser
     */
    public static String escapeAssignmentFeedback(String value) {
        if (value == null || value.length() == 0)
            return value;

        value = fixAssignmentFeedback(value);

        StringBuilder buf = new StringBuilder(value);
        int pos = -1;

        while ((pos = buf.indexOf("{{")) != -1) {
            buf.replace(pos, pos + "{{".length(), "<span class='highlight'>");
        }

        while ((pos = buf.indexOf("}}")) != -1) {
            buf.replace(pos, pos + "}}".length(), "</span>");
        }

        return FormattedText.escapeHtmlFormattedText(buf.toString());
    }

    /**
     * Escapes the given assignment feedback text, to be edited as formatted text (perhaps using the formatted text widget)
     */
    public static String escapeAssignmentFeedbackTextarea(String value) {
        if (value == null || value.length() == 0)
            return value;

        value = fixAssignmentFeedback(value);

        return FormattedText.escapeHtmlFormattedTextarea(value);
    }

    /**
     * Apply the fix to pre 1.1.05 assignments submissions feedback.
     */
    private static String fixAssignmentFeedback(String value) {
        if (value == null || value.length() == 0)
            return value;

        StringBuilder buf = new StringBuilder(value);
        int pos = -1;

        // <br/> -> \n
        while ((pos = buf.indexOf("<br/>")) != -1) {
            buf.replace(pos, pos + "<br/>".length(), "\n");
        }

        // <span class='chefAlert'>( -> {{
        while ((pos = buf.indexOf("<span class='chefAlert'>(")) != -1) {
            buf.replace(pos, pos + "<span class='chefAlert'>(".length(), "{{");
        }

        // )</span> -> }}
        while ((pos = buf.indexOf(")</span>")) != -1) {
            buf.replace(pos, pos + ")</span>".length(), "}}");
        }

        while ((pos = buf.indexOf("<ins>")) != -1) {
            buf.replace(pos, pos + "<ins>".length(), "{{");
        }

        while ((pos = buf.indexOf("</ins>")) != -1) {
            buf.replace(pos, pos + "</ins>".length(), "}}");
        }

        return buf.toString();

    } // fixAssignmentFeedback

    /**
     * Apply the fix to pre 1.1.05 assignments submissions feedback.
     */
    public static String showPrevFeedback(String value) {
        if (value == null || value.length() == 0)
            return value;

        StringBuilder buf = new StringBuilder(value);
        int pos = -1;

        // <br/> -> \n
        while ((pos = buf.indexOf("\n")) != -1) {
            buf.replace(pos, pos + "\n".length(), "<br />");
        }

        return buf.toString();

    } // showPrevFeedback

    private boolean alertGlobalNavigation(SessionState state, RunData data) {
        String mode = (String) state.getAttribute(STATE_MODE);
        ParameterParser params = data.getParameters();

        if (MODE_STUDENT_VIEW_SUBMISSION.equals(mode) || MODE_STUDENT_PREVIEW_SUBMISSION.equals(mode)
                || MODE_STUDENT_VIEW_GRADE.equals(mode) || MODE_INSTRUCTOR_NEW_EDIT_ASSIGNMENT.equals(mode)
                || MODE_INSTRUCTOR_DELETE_ASSIGNMENT.equals(mode) || MODE_INSTRUCTOR_GRADE_SUBMISSION.equals(mode)
                || MODE_INSTRUCTOR_PREVIEW_GRADE_SUBMISSION.equals(mode)
                || MODE_INSTRUCTOR_PREVIEW_ASSIGNMENT.equals(mode) || MODE_INSTRUCTOR_VIEW_ASSIGNMENT.equals(mode)
                || MODE_INSTRUCTOR_REORDER_ASSIGNMENT.equals(mode)) {
            if (state.getAttribute(ALERT_GLOBAL_NAVIGATION) == null) {
                addAlert(state, rb.getString("alert.globalNavi"));
                state.setAttribute(ALERT_GLOBAL_NAVIGATION, Boolean.TRUE);

                if (MODE_STUDENT_VIEW_SUBMISSION.equals(mode)) {
                    // save submit inputs
                    saveSubmitInputs(state, params);
                    state.setAttribute(FilePickerHelper.FILE_PICKER_TITLE_TEXT, rb.getString("gen.addatt"));

                    // TODO: file picker to save in dropbox? -ggolden
                    // User[] users = { UserDirectoryService.getCurrentUser() };
                    // state.setAttribute(ResourcesAction.STATE_SAVE_ATTACHMENT_IN_DROPBOX, users);
                } else if (MODE_INSTRUCTOR_NEW_EDIT_ASSIGNMENT.equals(mode)) {
                    setNewAssignmentParameters(data, false);
                } else if (MODE_INSTRUCTOR_GRADE_SUBMISSION.equals(mode)) {
                    readGradeForm(data, state, "read");
                }

                return true;
            }
        }

        return false;

    } // alertGlobalNavigation

    /**
     * Dispatch function inside add submission page
     */
    public void doRead_add_submission_form(RunData data) {
        String option = data.getParameters().getString("option");
        if ("cancel".equals(option)) {
            // cancel
            doCancel_show_submission(data);
        } else if ("preview".equals(option)) {
            // preview
            doPreview_submission(data);
        } else if ("save".equals(option)) {
            // save draft
            doSave_submission(data);
        } else if ("post".equals(option)) {
            // post
            doPost_submission(data);
        } else if ("revise".equals(option)) {
            // done preview
            doDone_preview_submission(data);
        } else if ("attach".equals(option)) {
            // attach
            ToolSession toolSession = SessionManager.getCurrentToolSession();
            String userId = SessionManager.getCurrentSessionUserId();
            String siteId = SiteService.getUserSiteId(userId);
            String collectionId = m_contentHostingService.getSiteCollection(siteId);
            toolSession.setAttribute(FilePickerHelper.DEFAULT_COLLECTION_ID, collectionId);
            doAttachments(data);
        } else if ("removeAttachment".equals(option)) {
            // remove selected attachment
            doRemove_attachment(data);
        } else if ("removeNewSingleUploadedFile".equals(option)) {
            doRemove_newSingleUploadedFile(data);
        } else if ("upload".equals(option)) {
            // upload local file
            doAttachUpload(data, true);
        } else if ("uploadSingleFile".equals(option)) {
            // upload single local file
            doAttachUpload(data, false);
        }
    }

    public void doRemove_attachment(RunData data) {
        SessionState state = ((JetspeedRunData) data).getPortletSessionState(((JetspeedRunData) data).getJs_peid());
        ParameterParser params = data.getParameters();

        // save submit inputs before refresh the page
        saveSubmitInputs(state, params);

        String removeAttachmentId = params.getString("currentAttachment");
        List attachments = state.getAttribute(ATTACHMENTS) == null ? null
                : ((List) state.getAttribute(ATTACHMENTS)).isEmpty() ? null
                        : (List) state.getAttribute(ATTACHMENTS);
        if (attachments != null) {
            Reference found = null;
            for (Object attachment : attachments) {
                if (((Reference) attachment).getId().equals(removeAttachmentId)) {
                    found = (Reference) attachment;
                    break;
                }
            }
            if (found != null) {
                attachments.remove(found);
                // refresh state variable
                state.setAttribute(ATTACHMENTS, attachments);
            }
        }

    }

    public void doRemove_newSingleUploadedFile(RunData data) {
        SessionState state = ((JetspeedRunData) data).getPortletSessionState(((JetspeedRunData) data).getJs_peid());
        state.removeAttribute("newSingleUploadedFile");
        state.removeAttribute("newSingleAttachmentList");
    }

    /**
     * return returns all groups in a site
     * @param contextString
     * @param aRef
     * @return
     */
    protected Collection getAllGroupsInSite(String contextString) {
        Collection groups = new ArrayList();
        try {
            Site site = SiteService.getSite(contextString);
            // any group in the site?
            groups = site.getGroups();
        } catch (IdUnusedException e) {
            // TODO Auto-generated catch block
            M_log.info("Problem getting groups for site:" + e.getMessage());
        }
        return groups;
    }

    /**
     * return list of submission object based on the group filter/search result
     * @param state
     * @param aRef
     * @return
     */
    protected List<AssignmentSubmission> getFilteredSubmitters(SessionState state, String aRef) {
        List<AssignmentSubmission> rv = new ArrayList<AssignmentSubmission>();

        String contextString = (String) state.getAttribute(STATE_CONTEXT_STRING);
        String allOrOneGroup = (String) state.getAttribute(VIEW_SUBMISSION_LIST_OPTION);
        String search = (String) state.getAttribute(VIEW_SUBMISSION_SEARCH);
        Boolean searchFilterOnly = (state.getAttribute(SUBMISSIONS_SEARCH_ONLY) != null
                && ((Boolean) state.getAttribute(SUBMISSIONS_SEARCH_ONLY)) ? Boolean.TRUE : Boolean.FALSE);

        //List<String> submitterIds = AssignmentService.getSubmitterIdList(searchFilterOnly.toString(), allOrOneGroup, search, aRef, contextString);
        Map<User, AssignmentSubmission> submitters = AssignmentService.getSubmitterMap(searchFilterOnly.toString(),
                allOrOneGroup, search, aRef, contextString);

        // construct the user-submission list
        for (AssignmentSubmission sub : submitters.values()) {
            if (!rv.contains(sub))
                rv.add(sub);
        }

        return rv;
    }

    /**
     * Set default score for all ungraded non electronic submissions
     * @param data
     */
    public void doSet_defaultNotGradedNonElectronicScore(RunData data) {
        if (!"POST".equals(data.getRequest().getMethod())) {
            return;
        }

        SessionState state = ((JetspeedRunData) data).getPortletSessionState(((JetspeedRunData) data).getJs_peid());
        ParameterParser params = data.getParameters();

        String grade = StringUtils.trimToNull(params.getString("defaultGrade"));
        if (grade == null) {
            addAlert(state, rb.getString("plespethe2"));
        }

        String assignmentId = (String) state.getAttribute(EXPORT_ASSIGNMENT_REF);
        // record the default grade setting for no-submission
        AssignmentEdit aEdit = editAssignment(assignmentId, "doSet_defaultNotGradedNonElectronicScore", state,
                false);
        if (aEdit != null) {
            aEdit.getPropertiesEdit().addProperty(GRADE_NO_SUBMISSION_DEFAULT_GRADE, grade);
            AssignmentService.commitEdit(aEdit);
        }

        Assignment a = getAssignment(assignmentId, "doSet_defaultNotGradedNonElectronicScore", state);
        if (a != null && a.getContent().getTypeOfGrade() == Assignment.SCORE_GRADE_TYPE) {
            //for point-based grades
            validPointGrade(state, grade, a.getContent().getFactor());

            if (state.getAttribute(STATE_MESSAGE) == null) {
                int maxGrade = a.getContent().getMaxGradePoint();
                try {
                    if (Integer.parseInt(scalePointGrade(state, grade, a.getContent().getFactor())) > maxGrade) {
                        if (state.getAttribute(GRADE_GREATER_THAN_MAX_ALERT) == null) {
                            // alert user first when he enters grade bigger than max scale
                            addAlert(state, rb.getFormattedMessage("grad2", new Object[] { grade,
                                    displayGrade(state, String.valueOf(maxGrade), a.getContent().getFactor()) }));
                            state.setAttribute(GRADE_GREATER_THAN_MAX_ALERT, Boolean.TRUE);
                        } else {
                            // remove the alert once user confirms he wants to give student higher grade
                            state.removeAttribute(GRADE_GREATER_THAN_MAX_ALERT);
                        }
                    }
                } catch (NumberFormatException e) {
                    M_log.warn(this + ":setDefaultNotGradedNonElectronicScore " + e.getMessage());
                    alertInvalidPoint(state, grade, a.getContent().getFactor());
                }
            }

            if (state.getAttribute(STATE_MESSAGE) == null) {
                grade = scalePointGrade(state, grade, a.getContent().getFactor());
            }
        }

        if (grade != null && state.getAttribute(STATE_MESSAGE) == null) {
            // get the user list
            List submissions = getFilteredSubmitters(state, a.getReference());

            for (int i = 0; i < submissions.size(); i++) {
                // get the submission object
                AssignmentSubmission submission = (AssignmentSubmission) submissions.get(i);
                if (submission.getSubmitted() && !submission.getGraded()) {
                    String sRef = submission.getReference();
                    // update the grades for those existing non-submissions
                    AssignmentSubmissionEdit sEdit = editSubmission(sRef,
                            "doSet_defaultNotGradedNonElectronicScore", state);
                    if (sEdit != null) {
                        sEdit.setGrade(grade);
                        sEdit.setGraded(true);
                        sEdit.setGradedBy(UserDirectoryService.getCurrentUser() == null ? null
                                : UserDirectoryService.getCurrentUser().getId());
                        AssignmentService.commitEdit(sEdit);
                    }
                }
            }
        }
    }

    /**
     * 
     */
    public void doSet_defaultNoSubmissionScore(RunData data) {
        if (!"POST".equals(data.getRequest().getMethod())) {
            return;
        }

        SessionState state = ((JetspeedRunData) data).getPortletSessionState(((JetspeedRunData) data).getJs_peid());
        ParameterParser params = data.getParameters();

        String grade = StringUtils.trimToNull(params.getString("defaultGrade"));
        if (grade == null) {
            addAlert(state, rb.getString("plespethe2"));
        }

        String assignmentId = (String) state.getAttribute(EXPORT_ASSIGNMENT_REF);
        // record the default grade setting for no-submission
        AssignmentEdit aEdit = editAssignment(assignmentId, "doSet_defaultNoSubmissionScore", state, false);
        if (aEdit != null) {
            aEdit.getPropertiesEdit().addProperty(GRADE_NO_SUBMISSION_DEFAULT_GRADE, grade);
            AssignmentService.commitEdit(aEdit);
        }

        Assignment a = getAssignment(assignmentId, "doSet_defaultNoSubmissionScore", state);
        if (a != null && a.getContent().getTypeOfGrade() == Assignment.SCORE_GRADE_TYPE) {
            //for point-based grades
            validPointGrade(state, grade, a.getContent().getFactor());

            if (state.getAttribute(STATE_MESSAGE) == null) {
                int maxGrade = a.getContent().getMaxGradePoint();
                try {
                    if (Integer.parseInt(scalePointGrade(state, grade, a.getContent().getFactor())) > maxGrade) {
                        if (state.getAttribute(GRADE_GREATER_THAN_MAX_ALERT) == null) {
                            // alert user first when he enters grade bigger than max scale
                            addAlert(state, rb.getFormattedMessage("grad2", new Object[] { grade,
                                    displayGrade(state, String.valueOf(maxGrade), a.getContent().getFactor()) }));
                            state.setAttribute(GRADE_GREATER_THAN_MAX_ALERT, Boolean.TRUE);
                        } else {
                            // remove the alert once user confirms he wants to give student higher grade
                            state.removeAttribute(GRADE_GREATER_THAN_MAX_ALERT);
                        }
                    }
                } catch (NumberFormatException e) {
                    alertInvalidPoint(state, grade, a.getContent().getFactor());
                    M_log.warn(this + ":setDefaultNoSubmissionScore " + e.getMessage());
                }
            }

            if (state.getAttribute(STATE_MESSAGE) == null) {
                grade = scalePointGrade(state, grade, a.getContent().getFactor());
            }
        }

        if (grade != null && state.getAttribute(STATE_MESSAGE) == null) {
            // get the submission list
            List submissions = getFilteredSubmitters(state, a.getReference());

            for (int i = 0; i < submissions.size(); i++) {
                // get the submission object
                AssignmentSubmission submission = (AssignmentSubmission) submissions.get(i);

                if (StringUtils.trimToNull(submission.getGrade()) == null) {
                    // update the grades for those existing non-submissions
                    AssignmentSubmissionEdit sEdit = editSubmission(submission.getReference(),
                            "doSet_defaultNoSubmissionScore", state);
                    if (sEdit != null) {
                        sEdit.setGrade(grade);
                        sEdit.setSubmitted(true);
                        sEdit.setGraded(true);
                        sEdit.setGradedBy(UserDirectoryService.getCurrentUser() == null ? null
                                : UserDirectoryService.getCurrentUser().getId());
                        AssignmentService.commitEdit(sEdit);
                    }
                } else if (StringUtils.trimToNull(submission.getGrade()) != null && !submission.getGraded()) {
                    // correct the grade status if there is a grade but the graded is false
                    AssignmentSubmissionEdit sEdit = editSubmission(submission.getReference(),
                            "doSet_defaultNoSubmissionScore", state);
                    if (sEdit != null) {
                        sEdit.setGraded(true);
                        sEdit.setGradedBy(UserDirectoryService.getCurrentUser() == null ? null
                                : UserDirectoryService.getCurrentUser().getId());
                        AssignmentService.commitEdit(sEdit);
                    }
                }
            }
        }
    }

    /**
     * A utility method to determine users listed in multiple groups
     * eligible to submit an assignment.  This is a bad situation.
     * Current mechanism is to error out assignments with this situation
     * to prevent affected groups from submitting and viewing feedback
     * and prevent instructors from grading or sending feedback to
     * affected groups until the conflict is resolved (by altering
     * membership or perhaps by designating a resolution).
     * 
     * @param assignmentorstate
     * @param specify_groups
     * @param ingroups
     * @param populate_ids
     * @param users
     * @return
     */
    public Collection<String> usersInMultipleGroups(Object assignmentorstate, // an assignment object or state object to find data
            boolean specify_groups, // don't use all site groups
            String[] ingroups, // limit to looking at specific groups
            boolean populate_ids, // return collection of user ids instead of message strings
            Collection<String> users // optional list of users to check instead of ALL site users
    ) {
        List retVal = new ArrayList();

        try {
            Site s = null;
            Collection<String> _assignmentGroups = new ArrayList<String>();
            for (int i = 0; ingroups != null && i < ingroups.length; i++) {
                _assignmentGroups.add(ingroups[i]);
            }
            if (assignmentorstate instanceof SessionState) {
                s = SiteService
                        .getSite((String) ((SessionState) assignmentorstate).getAttribute(STATE_CONTEXT_STRING));
            } else {
                Assignment _a = (Assignment) assignmentorstate;
                s = SiteService.getSite(_a.getContext());
                if (_a.getAccess().equals(Assignment.AssignmentAccess.SITE)) {
                    specify_groups = false;
                } else {
                    _assignmentGroups = _a.getGroups();
                    specify_groups = true;
                }
            }

            Iterator<String> _it = users == null ? s.getUsers().iterator() : users.iterator();
            while (_it.hasNext()) {
                String _userRef = _it.next();
                Collection<Group> _userGroups = s.getGroupsWithMember(_userRef);
                int _count = 0;
                StringBuilder _sb = new StringBuilder();
                Iterator<Group> _checkGroups = _userGroups.iterator();
                while (_checkGroups.hasNext()) {
                    Group _checkGroup = _checkGroups.next();
                    // exclude Sections from eligible groups
                    //if (_checkGroup.getProperties().get(GROUP_SECTION_PROPERTY) == null) {
                    if (!specify_groups) {
                        _count++;
                        if (_count > 1) {
                            _sb.append(", ");
                        }
                        _sb.append(_checkGroup.getTitle());
                    } else {
                        if (_assignmentGroups != null) {
                            Iterator<String> _assgnRefs = _assignmentGroups.iterator();
                            while (_assgnRefs.hasNext()) {
                                String _ref = _assgnRefs.next();
                                Group _group = s.getGroup(_ref);
                                if (_group != null && _group.getId().equals(_checkGroup.getId())) {
                                    _count++;
                                    if (_count > 1) {
                                        _sb.append(", ");
                                    }
                                    _sb.append(_checkGroup.getTitle());
                                }
                            }
                        }
                    }
                    //}
                }
                if (_count > 1) {
                    try {
                        User _the_user = UserDirectoryService.getUser(_userRef);
                        /*          
                         * SAK-23697 Allow user to be in multiple groups if
                              * no SECURE_ADD_ASSIGNMENT_SUBMISSION permission or 
                         * if user has both SECURE_ADD_ASSIGNMENT_SUBMISSION
                         * and SECURE_GRADE_ASSIGNMENT_SUBMISSION permission (TAs and Instructors)
                              */
                        if (m_securityService.unlock(_the_user, AssignmentService.SECURE_ADD_ASSIGNMENT_SUBMISSION,
                                s.getReference())
                                && !m_securityService.unlock(_the_user,
                                        AssignmentService.SECURE_GRADE_ASSIGNMENT_SUBMISSION, s.getReference())) {
                            retVal.add(populate_ids ? _the_user.getId()
                                    : _the_user.getDisplayName() + " (" + _sb.toString() + ")");
                        }
                        ;
                    } catch (UserNotDefinedException _unde) {
                        retVal.add("UNKNOWN USER (" + _sb.toString() + ")");
                    }
                }
            }
        } catch (IdUnusedException _te) {
            throw new IllegalStateException(
                    "Could not find the site for assignment/state " + assignmentorstate + ": " + _te, _te);
        }
        return retVal;
    }

    public Collection<String> usersInMultipleGroups(Assignment _a, boolean populate_ids) {
        return usersInMultipleGroups(_a, false, null, populate_ids, null);
    }

    public Collection<String> usersInMultipleGroups(Assignment _a) {
        return usersInMultipleGroups(_a, false, null, false, null);
    }

    public Collection<String> checkForUsersInMultipleGroups(Assignment a, Collection<String> ids,
            SessionState state, String base_message) {
        Collection<String> _dupUsers = usersInMultipleGroups(a, false, null, false, ids);
        if (_dupUsers.size() > 0) {
            StringBuilder _sb = new StringBuilder(base_message + " ");
            Iterator<String> _it = _dupUsers.iterator();
            if (_it.hasNext()) {
                _sb.append(_it.next());
            }
            while (_it.hasNext()) {
                _sb.append(", " + _it.next());
            }
            addAlert(state, _sb.toString());
        }
        return _dupUsers;
    }

    public Collection<String> checkForGroupsInMultipleGroups(Assignment a, Collection<Group> groups,
            SessionState state, String base_message) {
        Collection<String> retVal = new ArrayList<String>();
        if (groups != null && groups.size() > 0) {
            ArrayList<String> check_users = new ArrayList<String>();
            Iterator<Group> it_groups = groups.iterator();
            while (it_groups.hasNext()) {
                Group _group = it_groups.next();
                Iterator<String> it_strings = _group.getUsers().iterator();
                while (it_strings.hasNext()) {
                    String _id = it_strings.next();
                    if (!check_users.contains(_id)) {
                        check_users.add(_id);
                    }
                }
            }
            retVal = checkForUsersInMultipleGroups(a, check_users, state,
                    rb.getString("group.user.multiple.warning"));
        }
        return retVal;
    }

    public void doDownload_all(RunData data) {
        SessionState state = ((JetspeedRunData) data).getPortletSessionState(((JetspeedRunData) data).getJs_peid());
        state.setAttribute(STATE_MODE, MODE_INSTRUCTOR_GRADE_ASSIGNMENT);
        ParameterParser params = data.getParameters();
        String downloadUrl = params.getString("downloadUrl");
        state.setAttribute(STATE_DOWNLOAD_URL, downloadUrl);
    }

    public void doUpload_all(RunData data) {
        if (!"POST".equals(data.getRequest().getMethod())) {
            return;
        }

        SessionState state = ((JetspeedRunData) data).getPortletSessionState(((JetspeedRunData) data).getJs_peid());
        ParameterParser params = data.getParameters();
        // see if the user uploaded a file
        FileItem fileFromUpload = null;
        String fileName = null;
        fileFromUpload = params.getFileItem("file");
        String max_file_size_mb = ServerConfigurationService.getString("content.upload.max", "1");

        if (fileFromUpload == null) {
            // "The user submitted a file to upload but it was too big!"
            addAlert(state, rb.getFormattedMessage("size.exceeded", new Object[] { max_file_size_mb }));
        } else {
            String fname = StringUtils.lowerCase(fileFromUpload.getFileName());

            if (!StringUtils.endsWithAny(fname, new String[] { ".zip", ".sit" })) {
                // no file
                addAlert(state, rb.getString("uploadall.alert.zipFile"));
            } else {
                String contextString = ToolManager.getCurrentPlacement().getContext();
                String toolTitle = ToolManager.getTool(ASSIGNMENT_TOOL_ID).getTitle();
                String aReference = (String) state.getAttribute(EXPORT_ASSIGNMENT_REF);
                String associateGradebookAssignment = null;

                List<String> choices = params.getStrings("choices") != null
                        ? new ArrayList(Arrays.asList(params.getStrings("choices")))
                        : null;

                if (choices == null || choices.size() == 0) {
                    // has to choose one upload feature
                    addAlert(state, rb.getString("uploadall.alert.choose.element"));
                    state.removeAttribute(UPLOAD_ALL_HAS_SUBMISSION_TEXT);
                    state.removeAttribute(UPLOAD_ALL_HAS_SUBMISSION_ATTACHMENT);
                    state.removeAttribute(UPLOAD_ALL_HAS_GRADEFILE);
                    state.removeAttribute(UPLOAD_ALL_GRADEFILE_FORMAT);
                    state.removeAttribute(UPLOAD_ALL_HAS_COMMENTS);
                    state.removeAttribute(UPLOAD_ALL_HAS_FEEDBACK_TEXT);
                    state.removeAttribute(UPLOAD_ALL_HAS_FEEDBACK_ATTACHMENT);
                    state.removeAttribute(UPLOAD_ALL_WITHOUT_FOLDERS);
                    state.removeAttribute(UPLOAD_ALL_RELEASE_GRADES);
                } else {
                    // should contain student submission text information
                    boolean hasSubmissionText = uploadAll_readChoice(choices, "studentSubmissionText");
                    // should contain student submission attachment information
                    boolean hasSubmissionAttachment = uploadAll_readChoice(choices, "studentSubmissionAttachment");
                    // should contain grade file
                    boolean hasGradeFile = uploadAll_readChoice(choices, "gradeFile");
                    String gradeFileFormat = params.getString("gradeFileFormat");
                    if ("excel".equals(gradeFileFormat)) {
                        gradeFileFormat = "excel";
                    } else {
                        gradeFileFormat = "csv";
                    }
                    ;
                    // inline text
                    boolean hasFeedbackText = uploadAll_readChoice(choices, "feedbackTexts");
                    // comments.txt should be available
                    boolean hasComment = uploadAll_readChoice(choices, "feedbackComments");
                    // feedback attachment
                    boolean hasFeedbackAttachment = uploadAll_readChoice(choices, "feedbackAttachments");
                    // folders
                    //boolean withoutFolders = params.getString("withoutFolders") != null ? params.getBoolean("withoutFolders") : false;
                    boolean withoutFolders = uploadAll_readChoice(choices, "withoutFolders"); // SAK-19147
                    // release
                    boolean releaseGrades = params.getString("release") != null ? params.getBoolean("release")
                            : false;

                    state.setAttribute(UPLOAD_ALL_HAS_SUBMISSION_TEXT, Boolean.valueOf(hasSubmissionText));
                    state.setAttribute(UPLOAD_ALL_HAS_SUBMISSION_ATTACHMENT,
                            Boolean.valueOf(hasSubmissionAttachment));
                    state.setAttribute(UPLOAD_ALL_HAS_GRADEFILE, Boolean.valueOf(hasGradeFile));
                    state.setAttribute(UPLOAD_ALL_GRADEFILE_FORMAT, gradeFileFormat);
                    state.setAttribute(UPLOAD_ALL_HAS_COMMENTS, Boolean.valueOf(hasComment));
                    state.setAttribute(UPLOAD_ALL_HAS_FEEDBACK_TEXT, Boolean.valueOf(hasFeedbackText));
                    state.setAttribute(UPLOAD_ALL_HAS_FEEDBACK_ATTACHMENT, Boolean.valueOf(hasFeedbackAttachment));
                    state.setAttribute(UPLOAD_ALL_WITHOUT_FOLDERS, Boolean.valueOf(withoutFolders));
                    state.setAttribute(UPLOAD_ALL_RELEASE_GRADES, Boolean.valueOf(releaseGrades));

                    // SAK-17606
                    HashMap anonymousSubmissionAndEidTable = new HashMap();

                    // constructor the hashmap for all submission objects
                    HashMap submissionTable = new HashMap();
                    List submissions = null;
                    Assignment assignment = getAssignment(aReference, "doUpload_all", state);
                    if (assignment != null) {
                        associateGradebookAssignment = StringUtils.trimToNull(assignment.getProperties()
                                .getProperty(AssignmentService.PROP_ASSIGNMENT_ASSOCIATE_GRADEBOOK_ASSIGNMENT));
                        submissions = AssignmentService.getSubmissions(assignment);
                        if (submissions != null) {
                            Iterator sIterator = submissions.iterator();
                            while (sIterator.hasNext()) {
                                try {
                                    AssignmentSubmission s = (AssignmentSubmission) sIterator.next();
                                    String _eid = s.getSubmitterId();
                                    submissionTable.put(_eid, new UploadGradeWrapper(s.getGrade(),
                                            s.getSubmittedText(), s.getFeedbackComment(),
                                            hasSubmissionAttachment ? new ArrayList() : s.getSubmittedAttachments(),
                                            hasFeedbackAttachment ? new ArrayList() : s.getFeedbackAttachments(),
                                            (s.getSubmitted() && s.getTimeSubmitted() != null)
                                                    ? s.getTimeSubmitted().toString()
                                                    : "",
                                            s.getFeedbackText()));

                                    // SAK-17606
                                    anonymousSubmissionAndEidTable.put(s.getAnonymousSubmissionId(), _eid);
                                } catch (Throwable _eidprob) {
                                }
                            }
                        }
                    }

                    InputStream fileContentStream = fileFromUpload.getInputStream();
                    if (fileContentStream != null) {
                        submissionTable = uploadAll_parseZipFile(state, hasSubmissionText, hasSubmissionAttachment,
                                hasGradeFile, hasFeedbackText, hasComment, hasFeedbackAttachment, submissionTable,
                                assignment, fileContentStream, gradeFileFormat, anonymousSubmissionAndEidTable);
                    }

                    if (state.getAttribute(STATE_MESSAGE) == null) {
                        // update related submissions
                        uploadAll_updateSubmissions(state, aReference, associateGradebookAssignment,
                                hasSubmissionText, hasSubmissionAttachment, hasGradeFile, hasFeedbackText,
                                hasComment, hasFeedbackAttachment, releaseGrades, submissionTable, submissions,
                                assignment);
                    }
                }
            }
        }

        if (state.getAttribute(STATE_MESSAGE) == null) {
            // go back to the list of submissions view
            cleanUploadAllContext(state);
            state.setAttribute(STATE_MODE, MODE_INSTRUCTOR_GRADE_ASSIGNMENT);
        }
    }

    private boolean uploadAll_readChoice(List<String> choices, String text) {
        return choices != null && text != null && choices.contains(text) ? true : false;
    }

    /**
     * parse content inside uploaded zip file
     * @param state
     * @param hasSubmissionText
     * @param hasSubmissionAttachment
     * @param hasGradeFile
     * @param hasFeedbackText
     * @param hasComment
     * @param hasFeedbackAttachment
     * @param submissionTable
     * @param assignment
     * @param fileContentStream
     * @return
     */
    private HashMap uploadAll_parseZipFile(SessionState state, boolean hasSubmissionText,
            boolean hasSubmissionAttachment, boolean hasGradeFile, boolean hasFeedbackText, boolean hasComment,
            boolean hasFeedbackAttachment, HashMap submissionTable, Assignment assignment,
            InputStream fileContentStream, String gradeFileFormat, HashMap anonymousSubmissionAndEidTable) {
        // a flag value for checking whether the zip file is of proper format: 
        // should have a grades.csv file or grades.xls if there is no user folders
        boolean zipHasGradeFile = false;
        // and if have any folder structures, those folders should be named after at least one site user (zip file could contain user names who is no longer inside the site)
        boolean zipHasFolder = false;
        boolean zipHasFolderValidUserId = false;

        FileOutputStream tmpFileOut = null;
        File tempFile = null;

        // as stated from UI, we expected the zip file to have structure as follows
        //       assignment_name/user_eid/files
        // or assignment_name/grades.csv or assignment_name/grades.xls
        boolean validZipFormat = true;

        try {
            tempFile = File.createTempFile(String.valueOf(System.currentTimeMillis()), "");

            tmpFileOut = new FileOutputStream(tempFile);
            writeToStream(fileContentStream, tmpFileOut);
            tmpFileOut.flush();
            tmpFileOut.close();

            ZipFile zipFile = new ZipFile(tempFile, "UTF-8");
            Enumeration<ZipEntry> zipEntries = zipFile.getEntries();
            ZipEntry entry;
            while (zipEntries.hasMoreElements() && validZipFormat) {
                entry = zipEntries.nextElement();
                String entryName = entry.getName();
                if (!entry.isDirectory() && entryName.indexOf("/.") == -1) {
                    // SAK-17606
                    String anonTitle = rb.getString("grading.anonymous.title");

                    if (entryName.endsWith("grades.csv") || entryName.endsWith("grades.xls")) {
                        if (hasGradeFile && entryName.endsWith("grades.csv") && "csv".equals(gradeFileFormat)) {
                            // at least the zip file has a grade.csv
                            zipHasGradeFile = true;

                            // read grades.cvs from zip
                            CSVReader reader = new CSVReader(new InputStreamReader(zipFile.getInputStream(entry)));

                            List<String[]> lines = reader.readAll();

                            if (lines != null) {
                                for (int i = 3; i < lines.size(); i++) {
                                    String[] items = lines.get(i);
                                    if ((assignment.isGroup() && items.length > 3) || items.length > 4) {
                                        // has grade information
                                        try {
                                            String _the_eid = items[1];
                                            if (!assignment.isGroup()) {

                                                // SAK-17606
                                                User u = null;
                                                // check for anonymous grading
                                                if (!AssignmentService.getInstance()
                                                        .assignmentUsesAnonymousGrading(assignment)) {
                                                    u = UserDirectoryService
                                                            .getUserByEid(items[IDX_GRADES_CSV_EID]);
                                                } else { // anonymous so pull the real eid out of our hash table
                                                    String anonId = items[IDX_GRADES_CSV_EID];
                                                    String id = (String) anonymousSubmissionAndEidTable.get(anonId);
                                                    u = UserDirectoryService.getUser(id);
                                                }

                                                if (u == null)
                                                    throw new Exception("User not found!");
                                                _the_eid = u.getId();
                                            }

                                            UploadGradeWrapper w = (UploadGradeWrapper) submissionTable
                                                    .get(_the_eid);
                                            if (w != null) {
                                                String itemString = assignment.isGroup() ? items[3] : items[4];
                                                int gradeType = assignment.getContent().getTypeOfGrade();
                                                if (gradeType == Assignment.SCORE_GRADE_TYPE) {
                                                    validPointGrade(state, itemString,
                                                            assignment.getContent().getFactor());
                                                } // SAK-24199 - Applied patch provided with a few additional modifications.
                                                else if (gradeType == Assignment.PASS_FAIL_GRADE_TYPE) {
                                                    itemString = validatePassFailGradeValue(state, itemString);
                                                } else {
                                                    validLetterGrade(state, itemString);
                                                }
                                                if (state.getAttribute(STATE_MESSAGE) == null) {
                                                    w.setGrade(gradeType == Assignment.SCORE_GRADE_TYPE
                                                            ? scalePointGrade(state, itemString,
                                                                    assignment.getContent().getFactor())
                                                            : itemString);
                                                    submissionTable.put(_the_eid, w);
                                                }

                                            }

                                        } catch (Exception e) {
                                            M_log.warn(this + ":uploadAll_parseZipFile " + e.getMessage());
                                        }
                                    }
                                }
                            }
                        } //end of csv grades import

                        //Excel file import
                        if (hasGradeFile && entryName.endsWith("grades.xls") && "excel".equals(gradeFileFormat)) {
                            // at least the zip file has a grade.csv
                            zipHasGradeFile = true;

                            // read grades.xls from zip
                            POIFSFileSystem fsFileSystem = new POIFSFileSystem(zipFile.getInputStream(entry));
                            HSSFWorkbook workBook = new HSSFWorkbook(fsFileSystem);
                            HSSFSheet hssfSheet = workBook.getSheetAt(0);
                            //Iterate the rows
                            Iterator rowIterator = hssfSheet.rowIterator();
                            int count = 0;
                            while (rowIterator.hasNext()) {
                                HSSFRow hssfRow = (HSSFRow) rowIterator.next();
                                //We skip first row (= header row)
                                if (count > 0) {
                                    double gradeXls = -1;
                                    String itemString = null;
                                    // has grade information
                                    try {
                                        String _the_eid = hssfRow.getCell(1).getStringCellValue();
                                        if (!assignment.isGroup()) {
                                            if (!AssignmentService.getInstance()
                                                    .assignmentUsesAnonymousGrading(assignment)) {
                                                User u = UserDirectoryService.getUserByEid(
                                                        hssfRow.getCell(1).getStringCellValue()/*user eid*/);
                                                if (u == null)
                                                    throw new Exception("User not found!");
                                                _the_eid = u.getId();
                                            } else {
                                                _the_eid = (String) anonymousSubmissionAndEidTable.get(_the_eid);
                                            }
                                        }
                                        UploadGradeWrapper w = (UploadGradeWrapper) submissionTable.get(_the_eid);
                                        if (w != null) {
                                            itemString = assignment.isGroup() ? hssfRow.getCell(3).toString()
                                                    : hssfRow.getCell(4).toString();
                                            int gradeType = assignment.getContent().getTypeOfGrade();
                                            if (gradeType == Assignment.SCORE_GRADE_TYPE) {
                                                //Parse the string to double using the locale format
                                                try {
                                                    itemString = assignment.isGroup()
                                                            ? hssfRow.getCell(3).getStringCellValue()
                                                            : hssfRow.getCell(4).getStringCellValue();
                                                    if ((itemString != null) && (itemString.trim().length() > 0)) {
                                                        NumberFormat nbFormat = FormattedText.getNumberFormat();
                                                        gradeXls = nbFormat.parse(itemString).doubleValue();
                                                    }
                                                } catch (Exception e) {
                                                    try {
                                                        gradeXls = assignment.isGroup()
                                                                ? hssfRow.getCell(3).getNumericCellValue()
                                                                : hssfRow.getCell(4).getNumericCellValue();
                                                    } catch (Exception e2) {
                                                        gradeXls = -1;
                                                    }
                                                }
                                                if (gradeXls != -1) {
                                                    // get localized number format
                                                    NumberFormat nbFormat = FormattedText.getNumberFormat();
                                                    itemString = nbFormat.format(gradeXls);
                                                } else {
                                                    itemString = "";
                                                }

                                                validPointGrade(state, itemString,
                                                        assignment.getContent().getFactor());
                                            } else if (gradeType == Assignment.PASS_FAIL_GRADE_TYPE) {
                                                itemString = validatePassFailGradeValue(state, itemString);
                                            } else {
                                                validLetterGrade(state, itemString);
                                            }
                                            if (state.getAttribute(STATE_MESSAGE) == null) {
                                                w.setGrade(
                                                        gradeType == Assignment.SCORE_GRADE_TYPE
                                                                ? scalePointGrade(state, itemString,
                                                                        assignment.getContent().getFactor())
                                                                : itemString);
                                                submissionTable.put(_the_eid, w);
                                            }
                                        }
                                    } catch (Exception e) {
                                        M_log.warn(this + ":uploadAll_parseZipFile " + e.getMessage());
                                    }
                                }
                                count++;
                            }
                        } //end of Excel grades import

                    } else {
                        String[] pathParts = entryName.split("/");
                        if (pathParts.length <= 2) {
                            validZipFormat = false;
                        } else {
                            // get user eid part
                            String userEid = "";
                            if (entryName.indexOf("/") != -1) {
                                // there is folder structure inside zip
                                if (!zipHasFolder)
                                    zipHasFolder = true;

                                // remove the part of zip name
                                userEid = entryName.substring(entryName.indexOf("/") + 1);
                                // get out the user name part
                                if (userEid.indexOf("/") != -1) {
                                    userEid = userEid.substring(0, userEid.indexOf("/"));
                                }
                                // SAK-17606 - get the eid part
                                if ((userEid.indexOf("(") != -1) && !userEid.contains(anonTitle)) {
                                    userEid = userEid.substring(userEid.indexOf("(") + 1, userEid.indexOf(")"));
                                }
                                if (userEid.contains(anonTitle)) { // anonymous grading so we have to figure out the eid
                                    //get eid out of this slick table we made earlier
                                    userEid = (String) anonymousSubmissionAndEidTable.get(userEid);
                                }

                                userEid = StringUtils.trimToNull(userEid);
                                if (!assignment.isGroup()) {
                                    try {
                                        User u = UserDirectoryService.getUserByEid(userEid/*user eid*/);
                                        if (u != null)
                                            userEid = u.getId();
                                    } catch (Throwable _t) {
                                    }
                                }
                            }

                            if (submissionTable.containsKey(userEid)) {
                                if (!zipHasFolderValidUserId)
                                    zipHasFolderValidUserId = true;
                                if (hasComment && entryName.indexOf("comments") != -1) {
                                    // read the comments file
                                    String comment = getBodyTextFromZipHtml(zipFile.getInputStream(entry), true);
                                    if (comment != null) {
                                        UploadGradeWrapper r = (UploadGradeWrapper) submissionTable.get(userEid);
                                        r.setComment(comment);
                                        submissionTable.put(userEid, r);
                                    }
                                }
                                if (hasFeedbackText && entryName.indexOf("feedbackText") != -1) {
                                    // upload the feedback text
                                    String text = getBodyTextFromZipHtml(zipFile.getInputStream(entry), false);
                                    if (text != null) {
                                        UploadGradeWrapper r = (UploadGradeWrapper) submissionTable.get(userEid);
                                        r.setFeedbackText(text);
                                        submissionTable.put(userEid, r);
                                    }
                                }
                                if (hasSubmissionText && entryName.indexOf("_submissionText") != -1) {
                                    // upload the student submission text
                                    String text = getBodyTextFromZipHtml(zipFile.getInputStream(entry), false);
                                    if (text != null) {
                                        UploadGradeWrapper r = (UploadGradeWrapper) submissionTable.get(userEid);
                                        r.setText(text);
                                        submissionTable.put(userEid, r);
                                    }
                                }
                                if (hasSubmissionAttachment) {
                                    // upload the submission attachment
                                    String submissionFolder = "/" + rb.getString("stuviewsubm.submissatt") + "/";
                                    if (entryName.indexOf(submissionFolder) != -1) {
                                        // clear the submission attachment first
                                        UploadGradeWrapper r = (UploadGradeWrapper) submissionTable.get(userEid);
                                        submissionTable.put(userEid, r);
                                        submissionTable = uploadZipAttachments(state, submissionTable,
                                                zipFile.getInputStream(entry), entry, entryName, userEid,
                                                "submission");
                                    }
                                }
                                if (hasFeedbackAttachment) {
                                    // upload the feedback attachment
                                    String submissionFolder = "/" + rb.getString("download.feedback.attachment")
                                            + "/";
                                    if (entryName.indexOf(submissionFolder) != -1) {
                                        // clear the feedback attachment first
                                        UploadGradeWrapper r = (UploadGradeWrapper) submissionTable.get(userEid);
                                        submissionTable.put(userEid, r);
                                        submissionTable = uploadZipAttachments(state, submissionTable,
                                                zipFile.getInputStream(entry), entry, entryName, userEid,
                                                "feedback");
                                    }
                                }

                                // if this is a timestamp file
                                if (entryName.indexOf("timestamp") != -1) {
                                    byte[] timeStamp = readIntoBytes(zipFile.getInputStream(entry), entryName,
                                            entry.getSize());
                                    UploadGradeWrapper r = (UploadGradeWrapper) submissionTable.get(userEid);
                                    r.setSubmissionTimestamp(new String(timeStamp));
                                    submissionTable.put(userEid, r);
                                }
                            }
                        }
                    }
                }
            }
        } catch (IOException e) {
            // uploaded file is not a valid archive
            addAlert(state, rb.getString("uploadall.alert.zipFile"));
            M_log.warn(this + ":uploadAll_parseZipFile " + e.getMessage());
        } finally {
            if (tmpFileOut != null) {
                try {
                    tmpFileOut.close();
                } catch (IOException e) {
                    M_log.warn(this + ":uploadAll_parseZipFile: Error closing temp file output stream: "
                            + e.toString());
                }
            }

            if (fileContentStream != null) {
                try {
                    fileContentStream.close();
                } catch (IOException e) {
                    M_log.warn(this + ":uploadAll_parseZipFile: Error closing file upload stream: " + e.toString());
                }
            }

            //clean up the zip file
            if (tempFile != null && tempFile.exists()) {
                if (!tempFile.delete()) {
                    M_log.warn("Failed to clean up temp file");
                }
            }

        }

        //This is used so that the "Zip Error" message is only printed once

        boolean zipError = false;

        // generate error when there is no grade file and no folder structure
        if (!zipHasGradeFile && !zipHasFolder) {
            addAlert(state, rb.getString("uploadall.alert.incorrectFormat"));
            addAlert(state, rb.getString("uploadall.alert.noGradeFile"));
            zipError = true;
        }
        // generate error when there is folder structure but not matching one user id
        if (zipHasFolder && !zipHasFolderValidUserId) {
            if (zipError == false)
                addAlert(state, rb.getString("uploadall.alert.incorrectFormat"));
            addAlert(state, rb.getString("uploadall.alert.invalidUserId"));
            zipError = true;
        }
        // should have right structure of zip file
        if (!validZipFormat) {
            if (zipError == false)
                addAlert(state, rb.getString("uploadall.alert.incorrectFormat"));

            // alert if the zip is of wrong format
            addAlert(state, rb.getString("uploadall.alert.wrongZipFormat"));
            zipError = true;

        }
        return submissionTable;
    }

    /**
     * Update all submission objects based on uploaded zip file
     * @param state
     * @param aReference
     * @param associateGradebookAssignment
     * @param hasSubmissionText
     * @param hasSubmissionAttachment
     * @param hasGradeFile
     * @param hasFeedbackText
     * @param hasComment
     * @param hasFeedbackAttachment
     * @param releaseGrades
     * @param submissionTable
     * @param submissions
     * @param assignment
     */
    private void uploadAll_updateSubmissions(SessionState state, String aReference,
            String associateGradebookAssignment, boolean hasSubmissionText, boolean hasSubmissionAttachment,
            boolean hasGradeFile, boolean hasFeedbackText, boolean hasComment, boolean hasFeedbackAttachment,
            boolean releaseGrades, HashMap submissionTable, List submissions, Assignment assignment) {
        if (assignment != null && submissions != null) {
            Iterator sIterator = submissions.iterator();
            while (sIterator.hasNext()) {
                AssignmentSubmission s = (AssignmentSubmission) sIterator.next();
                if (submissionTable.containsKey(s.getSubmitterId())) {
                    // update the AssignmetnSubmission record
                    AssignmentSubmissionEdit sEdit = editSubmission(s.getReference(), "doUpload_all", state);
                    if (sEdit != null) {
                        UploadGradeWrapper w = (UploadGradeWrapper) submissionTable.get(s.getSubmitterId());

                        // the submission text
                        if (hasSubmissionText) {
                            sEdit.setSubmittedText(w.getText());
                        }

                        // the feedback text
                        if (hasFeedbackText) {
                            sEdit.setFeedbackText(w.getFeedbackText());
                        }

                        // the submission attachment
                        if (hasSubmissionAttachment) {
                            // update the submission attachments with newly added ones from zip file
                            List submittedAttachments = sEdit.getSubmittedAttachments();
                            for (Iterator attachments = w.getSubmissionAttachments().iterator(); attachments
                                    .hasNext();) {
                                Reference a = (Reference) attachments.next();
                                if (!submittedAttachments.contains(a)) {
                                    sEdit.addSubmittedAttachment(a);
                                }
                            }
                        }

                        // the feedback attachment
                        if (hasFeedbackAttachment) {
                            List feedbackAttachments = sEdit.getFeedbackAttachments();
                            for (Iterator attachments = w.getFeedbackAttachments().iterator(); attachments
                                    .hasNext();) {
                                // update the feedback attachments with newly added ones from zip file
                                Reference a = (Reference) attachments.next();
                                if (!feedbackAttachments.contains(a)) {
                                    sEdit.addFeedbackAttachment(a);
                                }
                            }
                        }

                        // the feedback comment
                        if (hasComment) {
                            sEdit.setFeedbackComment(w.getComment());
                        }

                        // the grade file
                        if (hasGradeFile) {
                            // set grade
                            String grade = StringUtils.trimToNull(w.getGrade());
                            sEdit.setGrade(grade);
                            if (grade != null && !grade.equals(rb.getString("gen.nograd"))
                                    && !"ungraded".equals(grade)) {
                                sEdit.setGraded(true);
                                sEdit.setGradedBy(UserDirectoryService.getCurrentUser() == null ? null
                                        : UserDirectoryService.getCurrentUser().getId());
                            }
                        }

                        // release or not - If it's graded or if there were feedback comments provided
                        if (sEdit.getGraded()
                                || (sEdit.getFeedbackComment() != null && !"".equals(sEdit.getFeedbackComment()))) {
                            sEdit.setGradeReleased(releaseGrades);
                            sEdit.setReturned(releaseGrades);
                        } else {
                            sEdit.setGradeReleased(false);
                            sEdit.setReturned(false);
                        }

                        if (releaseGrades && sEdit.getGraded()) {
                            sEdit.setTimeReturned(TimeService.newTime());
                        }

                        // if the current submission lacks timestamp while the timestamp exists inside the zip file
                        if (StringUtils.trimToNull(w.getSubmissionTimeStamp()) != null
                                && sEdit.getTimeSubmitted() == null) {
                            sEdit.setTimeSubmitted(TimeService.newTimeGmt(w.getSubmissionTimeStamp()));
                            sEdit.setSubmitted(true);
                        }

                        // for further information
                        boolean graded = sEdit.getGraded();
                        String sReference = sEdit.getReference();

                        // commit
                        AssignmentService.commitEdit(sEdit);

                        if (releaseGrades && graded) {
                            // update grade in gradebook
                            if (associateGradebookAssignment != null) {
                                integrateGradebook(state, aReference, associateGradebookAssignment, null, null,
                                        null, -1, null, sReference, "update", -1);
                            }
                        }

                    }
                }
            }
        }
    }

    /**
     * This is to get the submission or feedback attachment from the upload zip file into the submission object
     * @param state
     * @param submissionTable
     * @param zin
     * @param entry
     * @param entryName
     * @param userEid
     * @param submissionOrFeedback
     */
    private HashMap uploadZipAttachments(SessionState state, HashMap submissionTable, InputStream zin,
            ZipEntry entry, String entryName, String userEid, String submissionOrFeedback) {
        // upload all the files as instructor attachments to the submission for grading purpose
        String fName = entryName.substring(entryName.lastIndexOf("/") + 1, entryName.length());
        ContentTypeImageService iService = (ContentTypeImageService) state
                .getAttribute(STATE_CONTENT_TYPE_IMAGE_SERVICE);
        try {
            // get file extension for detecting content type
            // ignore those hidden files
            String extension = "";
            if (!fName.contains(".") || (fName.contains(".") && fName.indexOf(".") != 0)) {
                // add the file as attachment
                ResourceProperties properties = m_contentHostingService.newResourceProperties();
                properties.addProperty(ResourceProperties.PROP_DISPLAY_NAME, fName);

                String[] parts = fName.split("\\.");
                if (parts.length > 1) {
                    extension = parts[parts.length - 1];
                }

                try {
                    String contentType = ((ContentTypeImageService) state
                            .getAttribute(STATE_CONTENT_TYPE_IMAGE_SERVICE)).getContentType(extension);
                    ContentResourceEdit attachment = m_contentHostingService.addAttachmentResource(fName);
                    attachment.setContent(zin);
                    attachment.setContentType(contentType);
                    attachment.getPropertiesEdit().addAll(properties);
                    m_contentHostingService.commitResource(attachment);

                    UploadGradeWrapper r = (UploadGradeWrapper) submissionTable.get(userEid);
                    List attachments = "submission".equals(submissionOrFeedback) ? r.getSubmissionAttachments()
                            : r.getFeedbackAttachments();
                    attachments.add(EntityManager.newReference(attachment.getReference()));
                    if ("submission".equals(submissionOrFeedback)) {
                        r.setSubmissionAttachments(attachments);
                    } else {
                        r.setFeedbackAttachments(attachments);
                    }
                    submissionTable.put(userEid, r);
                } catch (Exception e) {
                    M_log.warn(this + ":doUploadZipAttachments problem commit resource " + e.getMessage());
                }
            }
        } catch (Exception ee) {
            M_log.warn(this + ":doUploadZipAttachments " + ee.getMessage());
        }

        return submissionTable;
    }

    private String getBodyTextFromZipHtml(InputStream zin, boolean convertNewLines) {
        String rv = "";
        try {
            rv = StringUtils.trimToNull(readIntoString(zin));
        } catch (IOException e) {
            M_log.warn(this + ":getBodyTextFromZipHtml " + e.getMessage());
        }
        if (rv != null) {
            //SAK-28045 - Pre-process newlines
            if (convertNewLines == true) {
                rv = rv.replaceAll("\\r\\n|\\r|\\n", "<br>");
            }
            //Escape the html from malicious tags.
            rv = FormattedText.processEscapedHtml(rv);

            int start = rv.indexOf("<body>");
            int end = rv.indexOf("</body>");
            if (start != -1 && end != -1) {
                // get the text in between
                rv = rv.substring(start + 6, end);
            }
        }
        return rv;
    }

    private byte[] readIntoBytes(InputStream zin, String fName, long length) throws IOException {

        byte[] buffer = new byte[4096];

        File f = File.createTempFile("asgnup", "tmp");

        FileOutputStream fout = new FileOutputStream(f);
        try {
            int len;
            while ((len = zin.read(buffer)) > 0) {
                fout.write(buffer, 0, len);
            }
            zin.close();
        } finally {
            try {
                fout.close(); // The file channel needs to be closed before the deletion.
            } catch (IOException ioException) {
                M_log.warn(this + "readIntoBytes: problem closing FileOutputStream " + ioException.getMessage());
            }
        }

        FileInputStream fis = new FileInputStream(f);
        FileChannel fc = fis.getChannel();
        byte[] data = null;
        try {
            data = new byte[(int) (fc.size())]; // fc.size returns the size of the file which backs the channel
            ByteBuffer bb = ByteBuffer.wrap(data);
            fc.read(bb);
        } finally {
            try {
                fc.close(); // The file channel needs to be closed before the deletion.
            } catch (IOException ioException) {
                M_log.warn(this + "readIntoBytes: problem closing FileChannel " + ioException.getMessage());
            }

            try {
                fis.close(); // The file inputstream needs to be closed before the deletion.
            } catch (IOException ioException) {
                M_log.warn(this + "readIntoBytes: problem closing FileInputStream " + ioException.getMessage());
            }
        }

        //remove the file
        f.delete();

        return data;
    }

    private String readIntoString(InputStream zin) throws IOException {
        StringBuilder buffer = new StringBuilder();
        int size = 2048;
        byte[] data = new byte[2048];
        while (true) {
            try {
                size = zin.read(data, 0, data.length);
                if (size > 0) {
                    buffer.append(new String(data, 0, size));
                } else {
                    break;
                }
            } catch (IOException e) {
                M_log.warn(this + ":readIntoString " + e.getMessage());
            }
        }
        return buffer.toString();
    }

    /**
     * 
     * @return
     */
    public void doCancel_download_upload_all(RunData data) {
        SessionState state = ((JetspeedRunData) data).getPortletSessionState(((JetspeedRunData) data).getJs_peid());
        state.setAttribute(STATE_MODE, MODE_INSTRUCTOR_GRADE_ASSIGNMENT);
        cleanUploadAllContext(state);
    }

    /**
     * clean the state variabled used by upload all process
     */
    private void cleanUploadAllContext(SessionState state) {
        state.removeAttribute(UPLOAD_ALL_HAS_SUBMISSION_TEXT);
        state.removeAttribute(UPLOAD_ALL_HAS_SUBMISSION_ATTACHMENT);
        state.removeAttribute(UPLOAD_ALL_HAS_FEEDBACK_ATTACHMENT);
        state.removeAttribute(UPLOAD_ALL_HAS_FEEDBACK_TEXT);
        state.removeAttribute(UPLOAD_ALL_HAS_GRADEFILE);
        state.removeAttribute(UPLOAD_ALL_GRADEFILE_FORMAT);
        state.removeAttribute(UPLOAD_ALL_HAS_COMMENTS);
        state.removeAttribute(UPLOAD_ALL_WITHOUT_FOLDERS);
        state.removeAttribute(UPLOAD_ALL_RELEASE_GRADES);

    }

    /**
     * Action is to preparing to go to the download all file
     */
    public void doPrep_download_all(RunData data) {
        SessionState state = ((JetspeedRunData) data).getPortletSessionState(((JetspeedRunData) data).getJs_peid());
        ParameterParser params = data.getParameters();
        String view = params.getString("view");
        state.setAttribute(VIEW_SUBMISSION_LIST_OPTION, view);
        state.setAttribute(STATE_MODE, MODE_INSTRUCTOR_DOWNLOAD_ALL);

    } // doPrep_download_all

    /**
     * Action is to preparing to go to the upload files
     */
    public void doPrep_upload_all(RunData data) {
        SessionState state = ((JetspeedRunData) data).getPortletSessionState(((JetspeedRunData) data).getJs_peid());
        ParameterParser params = data.getParameters();
        state.setAttribute(STATE_MODE, MODE_INSTRUCTOR_UPLOAD_ALL);

    } // doPrep_upload_all

    /**
     * the UploadGradeWrapper class to be used for the "upload all" feature
     */
    public class UploadGradeWrapper {
        /**
         * the grade 
         */
        String m_grade = null;

        /**
         * the text
         */
        String m_text = null;

        /**
         * the submission attachment list
         */
        List m_submissionAttachments = EntityManager.newReferenceList();

        /**
         * the comment
         */
        String m_comment = "";

        /**
         * the timestamp
         */
        String m_timeStamp = "";

        /**
         * the feedback text
         */
        String m_feedbackText = "";

        /**
         * the feedback attachment list
         */
        List m_feedbackAttachments = EntityManager.newReferenceList();

        public UploadGradeWrapper(String grade, String text, String comment, List submissionAttachments,
                List feedbackAttachments, String timeStamp, String feedbackText) {
            m_grade = grade;
            m_text = text;
            m_comment = comment;
            m_submissionAttachments = submissionAttachments;
            m_feedbackAttachments = feedbackAttachments;
            m_feedbackText = feedbackText;
            m_timeStamp = timeStamp;
        }

        /**
         * Returns grade string
         */
        public String getGrade() {
            return m_grade;
        }

        /**
         * Returns the text
         */
        public String getText() {
            return m_text;
        }

        /**
         * Returns the comment string
         */
        public String getComment() {
            return m_comment;
        }

        /**
         * Returns the submission attachment list
         */
        public List getSubmissionAttachments() {
            return m_submissionAttachments;
        }

        /**
         * Returns the feedback attachment list
         */
        public List getFeedbackAttachments() {
            return m_feedbackAttachments;
        }

        /**
         * submission timestamp
         * @return
         */
        public String getSubmissionTimeStamp() {
            return m_timeStamp;
        }

        /**
         * feedback text/incline comment
         * @return
         */
        public String getFeedbackText() {
            return m_feedbackText;
        }

        /**
         * set the grade string
         */
        public void setGrade(String grade) {
            m_grade = grade;
        }

        /**
         * set the text
         */
        public void setText(String text) {
            m_text = text;
        }

        /**
         * set the comment string
         */
        public void setComment(String comment) {
            m_comment = comment;
        }

        /**
         * set the submission attachment list
         */
        public void setSubmissionAttachments(List attachments) {
            m_submissionAttachments = attachments;
        }

        /**
         * set the attachment list
         */
        public void setFeedbackAttachments(List attachments) {
            m_feedbackAttachments = attachments;
        }

        /**
         * set the submission timestamp
         */
        public void setSubmissionTimestamp(String timeStamp) {
            m_timeStamp = timeStamp;
        }

        /**
         * set the feedback text
         */
        public void setFeedbackText(String feedbackText) {
            m_feedbackText = feedbackText;
        }
    }

    private List<DecoratedTaggingProvider> initDecoratedProviders() {
        TaggingManager taggingManager = (TaggingManager) ComponentManager
                .get("org.sakaiproject.taggable.api.TaggingManager");
        List<DecoratedTaggingProvider> providers = new ArrayList<DecoratedTaggingProvider>();
        for (TaggingProvider provider : taggingManager.getProviders()) {
            providers.add(new DecoratedTaggingProvider(provider));
        }
        return providers;
    }

    private List<DecoratedTaggingProvider> addProviders(Context context, SessionState state) {
        String mode = (String) state.getAttribute(STATE_MODE);
        List<DecoratedTaggingProvider> providers = (List) state.getAttribute(mode + PROVIDER_LIST);
        if (providers == null) {
            providers = initDecoratedProviders();
            state.setAttribute(mode + PROVIDER_LIST, providers);
        }
        context.put("providers", providers);
        return providers;
    }

    private void addActivity(Context context, Assignment assignment) {
        AssignmentActivityProducer assignmentActivityProducer = (AssignmentActivityProducer) ComponentManager
                .get("org.sakaiproject.assignment.taggable.api.AssignmentActivityProducer");
        context.put("activity", assignmentActivityProducer.getActivity(assignment));

        String placement = ToolManager.getCurrentPlacement().getId();
        context.put("iframeId", Validator.escapeJavascript("Main" + placement));
    }

    private void addItem(Context context, AssignmentSubmission submission, String userId) {
        AssignmentActivityProducer assignmentActivityProducer = (AssignmentActivityProducer) ComponentManager
                .get("org.sakaiproject.assignment.taggable.api.AssignmentActivityProducer");
        context.put("item", assignmentActivityProducer.getItem(submission, userId));
    }

    private ContentReviewService contentReviewService;

    public String getReportURL(Long score) {
        getContentReviewService();
        return contentReviewService.getIconUrlforScore(score);
    }

    private void getContentReviewService() {
        if (contentReviewService == null) {
            contentReviewService = (ContentReviewService) ComponentManager
                    .get(ContentReviewService.class.getName());
        }
    }

    /******************* model answer *********/
    /**
     * add model answer input into state variables
     */
    public void doModel_answer(RunData data) {
        if (!"POST".equals(data.getRequest().getMethod())) {
            return;
        }

        SessionState state = ((JetspeedRunData) data).getPortletSessionState(((JetspeedRunData) data).getJs_peid());
        ParameterParser params = data.getParameters();

        String text = StringUtils.trimToNull(params.get("modelanswer_text"));
        if (text == null) {
            // no text entered for model answer
            addAlert(state, rb.getString("modelAnswer.show_to_student.alert.noText"));
        }

        int showTo = params.getInt("modelanswer_showto");
        if (showTo == 0) {
            // no show to criteria specifided for model answer
            addAlert(state, rb.getString("modelAnswer.show_to_student.alert.noShowTo"));
        }

        if (state.getAttribute(STATE_MESSAGE) == null) {
            state.setAttribute(NEW_ASSIGNMENT_MODEL_ANSWER, Boolean.TRUE);
            state.setAttribute(NEW_ASSIGNMENT_MODEL_ANSWER_TEXT, text);
            state.setAttribute(NEW_ASSIGNMENT_MODEL_SHOW_TO_STUDENT, showTo);
            //state.setAttribute(NEW_ASSIGNMENT_MODEL_ANSWER_ATTACHMENT);
        }
    }

    private void assignment_resubmission_option_into_context(Context context, SessionState state) {
        context.put("name_allowResubmitNumber", AssignmentSubmission.ALLOW_RESUBMIT_NUMBER);

        String allowResubmitNumber = state.getAttribute(AssignmentSubmission.ALLOW_RESUBMIT_NUMBER) != null
                ? (String) state.getAttribute(AssignmentSubmission.ALLOW_RESUBMIT_NUMBER)
                : null;
        String allowResubmitTimeString = state.getAttribute(AssignmentSubmission.ALLOW_RESUBMIT_CLOSETIME) != null
                ? (String) state.getAttribute(AssignmentSubmission.ALLOW_RESUBMIT_CLOSETIME)
                : null;

        // the resubmit number
        if (allowResubmitNumber != null && !"0".equals(allowResubmitNumber)) {
            context.put("value_allowResubmitNumber", Integer.valueOf(allowResubmitNumber));
            context.put("resubmitNumber",
                    "-1".equals(allowResubmitNumber) ? rb.getString("allow.resubmit.number.unlimited")
                            : allowResubmitNumber);

            // put allow resubmit time information into context
            putTimePropertiesInContext(context, state, "Resubmit", ALLOW_RESUBMIT_CLOSEMONTH,
                    ALLOW_RESUBMIT_CLOSEDAY, ALLOW_RESUBMIT_CLOSEYEAR, ALLOW_RESUBMIT_CLOSEHOUR,
                    ALLOW_RESUBMIT_CLOSEMIN);
            // resubmit close time
            Time resubmitCloseTime = null;
            if (allowResubmitTimeString != null) {
                resubmitCloseTime = TimeService.newTime(Long.parseLong(allowResubmitTimeString));
            }
            // put into context
            if (resubmitCloseTime != null) {
                context.put("resubmitCloseTime", resubmitCloseTime.toStringLocalFull());
            }
        }

        context.put("value_year_from", state.getAttribute(NEW_ASSIGNMENT_YEAR_RANGE_FROM));
        context.put("value_year_to", state.getAttribute(NEW_ASSIGNMENT_YEAR_RANGE_TO));

    }

    private void assignment_resubmission_option_into_state(Assignment a, AssignmentSubmission s,
            SessionState state) {

        String allowResubmitNumber = null;
        String allowResubmitTimeString = null;

        if (s != null) {
            // if submission is present, get the resubmission values from submission object first
            ResourceProperties sProperties = s.getProperties();
            allowResubmitNumber = sProperties.getProperty(AssignmentSubmission.ALLOW_RESUBMIT_NUMBER);
            allowResubmitTimeString = sProperties.getProperty(AssignmentSubmission.ALLOW_RESUBMIT_CLOSETIME);
        } else if (a != null) {
            // otherwise, if assignment is present, get the resubmission values from assignment object next
            ResourceProperties aProperties = a.getProperties();
            allowResubmitNumber = aProperties.getProperty(AssignmentSubmission.ALLOW_RESUBMIT_NUMBER);
            allowResubmitTimeString = aProperties.getProperty(AssignmentSubmission.ALLOW_RESUBMIT_CLOSETIME);
        }
        if (StringUtils.trimToNull(allowResubmitNumber) != null) {
            state.setAttribute(AssignmentSubmission.ALLOW_RESUBMIT_NUMBER, allowResubmitNumber);
        } else {
            state.removeAttribute(AssignmentSubmission.ALLOW_RESUBMIT_NUMBER);
        }

        if (allowResubmitTimeString == null) {
            // default setting
            allowResubmitTimeString = String.valueOf(a.getCloseTime().getTime());
        }

        Time allowResubmitTime = null;
        if (allowResubmitTimeString != null) {
            state.setAttribute(AssignmentSubmission.ALLOW_RESUBMIT_CLOSETIME, allowResubmitTimeString);

            // get time object
            allowResubmitTime = TimeService.newTime(Long.parseLong(allowResubmitTimeString));
        } else {
            state.removeAttribute(AssignmentSubmission.ALLOW_RESUBMIT_CLOSETIME);
        }

        if (allowResubmitTime != null) {
            // set up related state variables
            putTimePropertiesInState(state, allowResubmitTime, ALLOW_RESUBMIT_CLOSEMONTH, ALLOW_RESUBMIT_CLOSEDAY,
                    ALLOW_RESUBMIT_CLOSEYEAR, ALLOW_RESUBMIT_CLOSEHOUR, ALLOW_RESUBMIT_CLOSEMIN);
        }
    }

    /**
     * save the resubmit option for selected users
     * @param data
     */
    public void doSave_resubmission_option(RunData data) {
        if (!"POST".equals(data.getRequest().getMethod())) {
            return;
        }

        SessionState state = ((JetspeedRunData) data).getPortletSessionState(((JetspeedRunData) data).getJs_peid());
        ParameterParser params = data.getParameters();

        // read in user input into state variable
        if (StringUtils.trimToNull(params.getString("allowResToggle")) != null) {
            if (params.getString(AssignmentSubmission.ALLOW_RESUBMIT_NUMBER) != null) {
                // read in allowResubmit params 
                readAllowResubmitParams(params, state, null);
            }
        } else {
            resetAllowResubmitParams(state);
        }

        String[] userIds = params.getStrings("selectedAllowResubmit");

        if (userIds == null || userIds.length == 0) {
            addAlert(state, rb.getString("allowResubmission.nouser"));
        } else {
            for (int i = 0; i < userIds.length; i++) {
                String userId = userIds[i];
                try {
                    String assignmentRef = (String) state.getAttribute(EXPORT_ASSIGNMENT_REF);
                    Assignment _a = getAssignment(assignmentRef, " resubmit update ", state);
                    AssignmentSubmission submission = null;
                    if (_a.isGroup()) {
                        submission = getSubmission(assignmentRef, userId, "doSave_resubmission_option", state);
                    } else {
                        User u = UserDirectoryService.getUser(userId);
                        submission = getSubmission(assignmentRef, u, "doSave_resubmission_option", state);
                    }
                    if (submission != null) {
                        AssignmentSubmissionEdit submissionEdit = editSubmission(submission.getReference(),
                                "doSave_resubmission_option", state);

                        if (submissionEdit != null) {
                            // get resubmit number
                            ResourcePropertiesEdit pEdit = submissionEdit.getPropertiesEdit();
                            pEdit.addProperty(AssignmentSubmission.ALLOW_RESUBMIT_NUMBER,
                                    (String) state.getAttribute(AssignmentSubmission.ALLOW_RESUBMIT_NUMBER));

                            if (state.getAttribute(ALLOW_RESUBMIT_CLOSEYEAR) != null) {
                                // get resubmit time
                                Time closeTime = getTimeFromState(state, ALLOW_RESUBMIT_CLOSEMONTH,
                                        ALLOW_RESUBMIT_CLOSEDAY, ALLOW_RESUBMIT_CLOSEYEAR, ALLOW_RESUBMIT_CLOSEHOUR,
                                        ALLOW_RESUBMIT_CLOSEMIN);
                                pEdit.addProperty(AssignmentSubmission.ALLOW_RESUBMIT_CLOSETIME,
                                        String.valueOf(closeTime.getTime()));
                            } else {
                                pEdit.removeProperty(AssignmentSubmission.ALLOW_RESUBMIT_CLOSETIME);
                            }

                            // save
                            AssignmentService.commitEdit(submissionEdit);
                        }
                    }
                } catch (Exception userException) {
                    M_log.warn(this + ":doSave_resubmission_option error getting user with id " + userId + " "
                            + userException.getMessage());
                }
            }
        }

    }

    public void doSave_send_feedback(RunData data) {
        SessionState state = ((JetspeedRunData) data).getPortletSessionState(((JetspeedRunData) data).getJs_peid());
        ParameterParser params = data.getParameters();

        String[] userIds = params.getStrings("selectedAllowResubmit");
        boolean checkForFormattingErrors = true;
        String comment = processFormattedTextFromBrowser(state, params.getCleanString("commentFeedback"),
                checkForFormattingErrors);
        String overwrite = params.getString("overWrite");
        String returnToStudents = params.getString("returnToStudents");

        if (userIds == null || userIds.length == 0) {
            addAlert(state, rb.getString("sendFeedback.nouser"));
        } else {
            if (comment.equals("")) {
                addAlert(state, rb.getString("sendFeedback.nocomment"));
            } else {
                int errorUsers = 0;
                for (int i = 0; i < userIds.length; i++) {
                    String userId = userIds[i];
                    try {
                        User u = UserDirectoryService.getUser(userId);
                        String assignmentRef = (String) state.getAttribute(EXPORT_ASSIGNMENT_REF);
                        AssignmentSubmission submission = AssignmentService.getSubmission(assignmentRef, u);
                        if (submission != null) {
                            AssignmentSubmissionEdit submissionEdit = AssignmentService
                                    .editSubmission(submission.getReference());
                            if (submissionEdit != null) {
                                String newFeedbackComment = "";
                                if (overwrite != null) {
                                    newFeedbackComment = comment + "<br/>";
                                    state.setAttribute(OW_FEEDBACK, Boolean.TRUE);
                                } else {
                                    newFeedbackComment = submissionEdit.getFeedbackComment() + comment + "<br/>";
                                }
                                submissionEdit.setFeedbackComment(newFeedbackComment);
                                if (returnToStudents != null) {
                                    submissionEdit.setReturned(true);
                                    submissionEdit.setTimeReturned(TimeService.newTime());
                                    state.setAttribute(RETURNED_FEEDBACK, Boolean.TRUE);
                                }
                                AssignmentService.commitEdit(submissionEdit);
                                state.setAttribute(SAVED_FEEDBACK, Boolean.TRUE);
                            }
                        }
                    } catch (Exception userException) {
                        M_log.warn(this + ":doSave_send_feedback error getting user with id " + userId + " "
                                + userException.getMessage());
                        errorUsers++;
                    }
                }
                if (errorUsers > 0) {
                    addAlert(state, rb.getFormattedMessage("sendFeedback.error", new Object[] { errorUsers }));
                }
            }
        }

    }

    /**
     * multiple file upload
     * @param data
     */
    public void doAttachUpload(RunData data) {
        // save the current input before leaving the page
        SessionState state = ((JetspeedRunData) data).getPortletSessionState(((JetspeedRunData) data).getJs_peid());
        saveSubmitInputs(state, data.getParameters());

        doAttachUpload(data, false);
    }

    /**
     * single file upload
     * @param data
     */
    public void doAttachUploadSingle(RunData data) {
        doAttachUpload(data, true);
    }

    /**
     * upload local file for attachment
     * @param data
     * @param singleFileUpload
     */
    public void doAttachUpload(RunData data, boolean singleFileUpload) {
        if (!"POST".equals(data.getRequest().getMethod())) {
            return;
        }

        SessionState state = ((JetspeedRunData) data).getPortletSessionState(((JetspeedRunData) data).getJs_peid());
        ToolSession toolSession = SessionManager.getCurrentToolSession();
        ParameterParser params = data.getParameters();

        String max_file_size_mb = ServerConfigurationService.getString("content.upload.max", "1");

        // construct the state variable for attachment list
        List attachments = state.getAttribute(ATTACHMENTS) != null ? (List) state.getAttribute(ATTACHMENTS)
                : EntityManager.newReferenceList();

        FileItem fileitem = null;
        try {
            fileitem = params.getFileItem("upload");
        } catch (Exception e) {
            // other exceptions should be caught earlier
            M_log.debug(this + ".doAttachupload ***** Unknown Exception ***** " + e.getMessage());
            addAlert(state, rb.getString("failed.upload"));
        }
        if (fileitem == null) {
            // "The user submitted a file to upload but it was too big!"
            addAlert(state, rb.getFormattedMessage("size.exceeded", new Object[] { max_file_size_mb }));
            //addAlert(state, hrb.getString("size") + " " + max_file_size_mb + "MB " + hrb.getString("exceeded2"));
        } else if (singleFileUpload && (fileitem.getFileName() == null || fileitem.getFileName().length() == 0)) {
            // only if in the single file upload case, need to warn user to upload a local file
            addAlert(state, rb.getString("choosefile7"));
        } else if (fileitem.getFileName().length() > 0) {
            String filename = Validator.getFileName(fileitem.getFileName());
            InputStream fileContentStream = fileitem.getInputStream();
            String contentType = fileitem.getContentType();

            InputStreamReader reader = new InputStreamReader(fileContentStream);

            try {

                //check the InputStreamReader to see if the file is 0kb aka empty
                if (reader.ready() == false) {
                    addAlert(state, rb.getFormattedMessage("attempty", new Object[] { filename }));
                } else if (fileContentStream != null) {
                    // we just want the file name part - strip off any drive and path stuff
                    String name = Validator.getFileName(filename);
                    String resourceId = Validator.escapeResourceName(name);

                    // make a set of properties to add for the new resource
                    ResourcePropertiesEdit props = m_contentHostingService.newResourceProperties();
                    props.addProperty(ResourceProperties.PROP_DISPLAY_NAME, name);
                    props.addProperty(ResourceProperties.PROP_DESCRIPTION, filename);

                    // make an attachment resource for this URL
                    SecurityAdvisor sa = new SecurityAdvisor() {
                        public SecurityAdvice isAllowed(String userId, String function, String reference) {
                            //Needed to be able to add or modify their own
                            if (function.equals(m_contentHostingService.AUTH_RESOURCE_ADD)
                                    || function.equals(m_contentHostingService.AUTH_RESOURCE_WRITE_OWN)) {
                                return SecurityAdvice.ALLOWED;
                            }
                            return SecurityAdvice.PASS;
                        }
                    };
                    try {
                        String siteId = ToolManager.getCurrentPlacement().getContext();

                        // add attachment
                        // put in a security advisor so we can create citationAdmin site without need
                        // of further permissions
                        m_securityService.pushAdvisor(sa);
                        ContentResource attachment = m_contentHostingService.addAttachmentResource(resourceId,
                                siteId, "Assignments", contentType, fileContentStream, props);

                        Site s = null;
                        try {
                            s = SiteService.getSite(siteId);
                        } catch (IdUnusedException iue) {
                            M_log.warn(this + ":doAttachUpload: Site not found!" + iue.getMessage());
                        }

                        // Check if the file is acceptable with the ContentReviewService
                        boolean blockedByCRS = false;
                        if (allowReviewService && contentReviewService != null
                                && contentReviewService.isSiteAcceptable(s)) {
                            String assignmentReference = (String) state
                                    .getAttribute(VIEW_SUBMISSION_ASSIGNMENT_REFERENCE);
                            Assignment a = getAssignment(assignmentReference, "doAttachUpload", state);
                            if (a.getContent().getAllowReviewService()) {
                                if (!contentReviewService.isAcceptableContent(attachment)) {
                                    addAlert(state,
                                            rb.getFormattedMessage("review.file.not.accepted",
                                                    new Object[] { contentReviewService.getServiceName(),
                                                            getContentReviewAcceptedFileTypesMessage() }));
                                    blockedByCRS = true;
                                    // TODO: delete the file? Could we have done this check without creating it in the first place?
                                }
                            }
                        }

                        if (!blockedByCRS) {
                            try {
                                Reference ref = EntityManager
                                        .newReference(m_contentHostingService.getReference(attachment.getId()));
                                if (singleFileUpload && attachments.size() > 1) {
                                    //SAK-26319   - the assignment type is 'single file upload' and the user has existing attachments, so they must be uploading a 'newSingleUploadedFile'   --bbailla2
                                    state.setAttribute("newSingleUploadedFile", ref);
                                } else {
                                    attachments.add(ref);
                                }
                            } catch (Exception ee) {
                                M_log.warn(this + "doAttachUpload cannot find reference for " + attachment.getId()
                                        + ee.getMessage());
                            }
                        }

                        state.setAttribute(ATTACHMENTS, attachments);
                    } catch (PermissionException e) {
                        addAlert(state, rb.getString("notpermis4"));
                    } catch (RuntimeException e) {
                        if (m_contentHostingService.ID_LENGTH_EXCEPTION.equals(e.getMessage())) {
                            // couldn't we just truncate the resource-id instead of rejecting the upload?
                            addAlert(state, rb.getFormattedMessage("alert.toolong", new String[] { name }));
                        } else {
                            M_log.debug(this + ".doAttachupload ***** Runtime Exception ***** " + e.getMessage());
                            addAlert(state, rb.getString("failed"));
                        }
                    } catch (ServerOverloadException e) {
                        // disk full or no writing permission to disk
                        M_log.debug(this + ".doAttachupload ***** Disk IO Exception ***** " + e.getMessage());
                        addAlert(state, rb.getString("failed.diskio"));
                    } catch (Exception ignore) {
                        // other exceptions should be caught earlier
                        M_log.debug(this + ".doAttachupload ***** Unknown Exception ***** " + ignore.getMessage());
                        addAlert(state, rb.getString("failed"));
                    } finally {
                        m_securityService.popAdvisor(sa);
                    }
                } else {
                    addAlert(state, rb.getString("choosefile7"));
                }
            } catch (IOException e) {
                M_log.debug(this + ".doAttachupload ***** IOException ***** " + e.getMessage());
                addAlert(state, rb.getString("failed"));
            }
        }
    } // doAttachupload

    /**
     * Simply take as much as possible out of 'in', and write it to 'out'. Don't
     * close the streams, just transfer the data.
     * 
     * @param in
     *       The data provider
     * @param out
     *       The data output
     * @throws IOException
     *       Thrown if there is an IOException transfering the data
     */
    private void writeToStream(InputStream in, OutputStream out) throws IOException {
        byte[] buffer = new byte[INPUT_BUFFER_SIZE];

        try {
            while (in.read(buffer) > 0) {
                out.write(buffer);
            }
        } catch (IOException e) {
            throw e;
        }
    }

    /**
     * Categories are represented as Integers. Right now this feature only will
     * be active for new assignments, so we'll just always return 0 for the 
     * unassigned category. In the future we may (or not) want to update this 
     * to return categories for existing gradebook items.
     * @param assignment
     * @return
     */
    private int getAssignmentCategoryAsInt(Assignment assignment) {
        int categoryAsInt;
        categoryAsInt = 0; // zero for unassigned

        return categoryAsInt;
    }

    /*
    * (non-Javadoc) 
    */
    public void doOptions(RunData data, Context context) {
        doOptions(data);
    } // doOptions

    protected void doOptions(RunData data) {
        SessionState state = ((JetspeedRunData) data).getPortletSessionState(((JetspeedRunData) data).getJs_peid());
        String siteId = ToolManager.getCurrentPlacement().getContext();
        try {
            Site site = SiteService.getSite(siteId);
            ToolConfiguration tc = site.getToolForCommonId(ASSIGNMENT_TOOL_ID);
            String optionValue = tc.getPlacementConfig().getProperty(SUBMISSIONS_SEARCH_ONLY);
            state.setAttribute(SUBMISSIONS_SEARCH_ONLY,
                    optionValue == null ? Boolean.FALSE : Boolean.valueOf(optionValue));
        } catch (IdUnusedException e) {
            M_log.warn(this + ":doOptions  Cannot find site with id " + siteId);
        }

        if (!alertGlobalNavigation(state, data)) {
            if (SiteService.allowUpdateSite((String) state.getAttribute(STATE_CONTEXT_STRING))) {
                state.setAttribute(STATE_MODE, MODE_OPTIONS);
            } else {
                addAlert(state, rb.getString("youarenot_options"));
            }

            // reset the global navigaion alert flag
            if (state.getAttribute(ALERT_GLOBAL_NAVIGATION) != null) {
                state.removeAttribute(ALERT_GLOBAL_NAVIGATION);
            }
        }
    }

    /**
     * build the options
     */
    protected String build_options_context(VelocityPortlet portlet, Context context, RunData data,
            SessionState state) {
        context.put("context", state.getAttribute(STATE_CONTEXT_STRING));

        context.put(SUBMISSIONS_SEARCH_ONLY, (Boolean) state.getAttribute(SUBMISSIONS_SEARCH_ONLY));

        String template = (String) getContext(data).get("template");
        return template + TEMPLATE_OPTIONS;

    } // build_options_context

    /**
     * save the option edits
     * @param data
     * @param context
     */
    public void doUpdate_options(RunData data) {
        if (!"POST".equals(data.getRequest().getMethod())) {
            return;
        }

        SessionState state = ((JetspeedRunData) data).getPortletSessionState(((JetspeedRunData) data).getJs_peid());
        String siteId = ToolManager.getCurrentPlacement().getContext();
        ParameterParser params = data.getParameters();

        // only show those submissions matching search criteria
        boolean submissionsSearchOnly = params.getBoolean(SUBMISSIONS_SEARCH_ONLY);
        state.setAttribute(SUBMISSIONS_SEARCH_ONLY, Boolean.valueOf(submissionsSearchOnly));

        // save the option into tool configuration
        try {
            Site site = SiteService.getSite(siteId);
            ToolConfiguration tc = site.getToolForCommonId(ASSIGNMENT_TOOL_ID);
            String currentSetting = tc.getPlacementConfig().getProperty(SUBMISSIONS_SEARCH_ONLY);
            if (currentSetting == null || !currentSetting.equals(Boolean.toString(submissionsSearchOnly))) {
                // save the change
                tc.getPlacementConfig().setProperty(SUBMISSIONS_SEARCH_ONLY,
                        Boolean.toString(submissionsSearchOnly));
                SiteService.save(site);
            }
        } catch (IdUnusedException e) {
            M_log.warn(this + ":doUpdate_options  Cannot find site with id " + siteId);
            addAlert(state, rb.getFormattedMessage("options_cannotFindSite", new Object[] { siteId }));
        } catch (PermissionException e) {
            M_log.warn(this + ":doUpdate_options Do not have permission to edit site with id " + siteId);
            addAlert(state, rb.getFormattedMessage("options_cannotEditSite", new Object[] { siteId }));
        }
        if (state.getAttribute(STATE_MESSAGE) == null) {
            // back to list view
            state.setAttribute(STATE_MODE, MODE_LIST_ASSIGNMENTS);
        }
    } // doUpdate_options

    /**
     * cancel the option edits
     * @param data
     * @param context
     */
    public void doCancel_options(RunData data, Context context) {
        SessionState state = ((JetspeedRunData) data).getPortletSessionState(((JetspeedRunData) data).getJs_peid());
        state.setAttribute(STATE_MODE, MODE_LIST_ASSIGNMENTS);
    } // doCancel_options

    /**
     * handle submission options
     */
    public void doSubmission_search_option(RunData data, Context context) {
        SessionState state = ((JetspeedRunData) data).getPortletSessionState(((JetspeedRunData) data).getJs_peid());

        // read the search form field into the state object
        String searchOption = StringUtils.trimToNull(data.getParameters().getString("option"));

        // set the flag to go to the prev page on the next list
        if (searchOption != null && "submit".equals(searchOption)) {
            doSubmission_search(data, context);
        } else if (searchOption != null && "clear".equals(searchOption)) {
            doSubmission_search_clear(data, context);
        }

    } // doSubmission_search_option

    /**
     * Handle the submission search request.
     */
    public void doSubmission_search(RunData data, Context context) {
        SessionState state = ((JetspeedRunData) data).getPortletSessionState(((JetspeedRunData) data).getJs_peid());

        // read the search form field into the state object
        String search = StringUtils.trimToNull(data.getParameters().getString(FORM_SEARCH));

        // set the flag to go to the prev page on the next list
        if (search == null) {
            state.removeAttribute(STATE_SEARCH);
        } else {
            state.setAttribute(STATE_SEARCH, search);
        }

    } // doSubmission_search

    /**
     * Handle a Search Clear request.
     */
    public void doSubmission_search_clear(RunData data, Context context) {
        SessionState state = ((JetspeedRunData) data).getPortletSessionState(((JetspeedRunData) data).getJs_peid());

        // clear the search
        state.removeAttribute(STATE_SEARCH);

    } // doSubmission_search_clear

    protected void letterGradeOptionsIntoContext(Context context) {
        String lOptions = ServerConfigurationService.getString("assignment.letterGradeOptions",
                "A+,A,A-,B+,B,B-,C+,C,C-,D+,D,D-,E,F");
        context.put("letterGradeOptions", StringUtils.split(lOptions, ","));
    }

    private LRS_Statement getStatementForViewSubmittedAssignment(LRS_Actor actor, Event event,
            String assignmentName) {
        String url = ServerConfigurationService.getPortalUrl();
        LRS_Verb verb = new LRS_Verb(SAKAI_VERB.interacted);
        LRS_Object lrsObject = new LRS_Object(url + event.getResource(), "view-submitted-assignment");
        HashMap<String, String> nameMap = new HashMap<String, String>();
        nameMap.put("en-US", "User reviewed a submitted assignment");
        lrsObject.setActivityName(nameMap);
        // Add description
        HashMap<String, String> descMap = new HashMap<String, String>();
        descMap.put("en-US", "User reviewed a submitted assignment: " + assignmentName);
        lrsObject.setDescription(descMap);
        return new LRS_Statement(actor, verb, lrsObject);
    }

    private LRS_Statement getStatementForViewAssignment(LRS_Actor actor, Event event, String assignmentName) {
        String url = ServerConfigurationService.getPortalUrl();
        LRS_Verb verb = new LRS_Verb(SAKAI_VERB.interacted);
        LRS_Object lrsObject = new LRS_Object(url + event.getResource(), "view-assignment");
        HashMap<String, String> nameMap = new HashMap<String, String>();
        nameMap.put("en-US", "User viewed an assignment");
        lrsObject.setActivityName(nameMap);
        HashMap<String, String> descMap = new HashMap<String, String>();
        descMap.put("en-US", "User viewed assignment: " + assignmentName);
        lrsObject.setDescription(descMap);
        return new LRS_Statement(actor, verb, lrsObject);
    }

    private LRS_Statement getStatementForSubmitAssignment(LRS_Actor actor, Event event, String accessUrl,
            String assignmentName) {
        LRS_Verb verb = new LRS_Verb(SAKAI_VERB.attempted);
        LRS_Object lrsObject = new LRS_Object(accessUrl + event.getResource(), "submit-assignment");
        HashMap<String, String> nameMap = new HashMap<String, String>();
        nameMap.put("en-US", "User submitted an assignment");
        lrsObject.setActivityName(nameMap);
        // Add description
        HashMap<String, String> descMap = new HashMap<String, String>();
        descMap.put("en-US", "User submitted an assignment: " + assignmentName);
        lrsObject.setDescription(descMap);
        return new LRS_Statement(actor, verb, lrsObject);
    }

    /**
     * Validates the ungraded/pass/fail grade values provided in the upload file are valid.
     * Values must be present in the appropriate language property file.
     * @param state
     * @param itemString
     * @return one of the valid values or the original value entered by the user
     */
    private String validatePassFailGradeValue(SessionState state, String itemString) {
        // -------- SAK-24199 (SAKU-274) by Shoji Kajita
        if (itemString.equalsIgnoreCase(rb.getString("pass"))) {
            itemString = "Pass";
        } else if (itemString.equalsIgnoreCase(rb.getString("fail"))) {
            itemString = "Fail";
        } else if (itemString.equalsIgnoreCase(rb.getString("ungra")) || itemString.isEmpty()) {
            itemString = "Ungraded";
        } else { // Not one of the expected values. Display error message.
            addAlert(state, rb.getFormattedMessage("plesuse0", new Object[] { itemString }));
        }
        // --------

        return itemString;
    }

    /**
     * Action to determine which view do present to user.
     * This method is currently called from calendar events in the alternate calendar tool.
     */
    public void doCheck_view(RunData data) {
        SessionState state = ((JetspeedRunData) data).getPortletSessionState(((JetspeedRunData) data).getJs_peid());
        ParameterParser params = data.getParameters();
        String assignmentId = params.getString("assignmentId");

        String contextString = (String) state.getAttribute(STATE_CONTEXT_STRING);

        boolean allowReadAssignment = AssignmentService.allowGetAssignment(contextString);
        boolean allowSubmitAssignment = AssignmentService.allowAddSubmission(contextString);
        boolean allowAddAssignment = AssignmentService.allowAddAssignment(contextString);

        // Retrieve the status of the assignment
        String assignStatus = getAssignmentStatus(assignmentId, state);
        if (assignStatus != null && !assignStatus.equals(rb.getString("gen.open")) && !allowAddAssignment) {
            addAlert(state, rb.getFormattedMessage("gen.notavail", new Object[] { assignStatus }));
        }
        // Check the permission and call the appropriate view method.
        if (allowAddAssignment) {
            doView_assignment(data);
        } else if (allowSubmitAssignment) {
            doView_submission(data);
        } else if (allowReadAssignment) {
            doView_assignment_as_student(data);
        } else {
            addAlert(state, rb.getFormattedMessage("youarenot_viewAssignment", new Object[] { assignmentId }));
        }
    } // doCheck_view

    /**
     * Retrieves the status of a given assignment.
     * @param assignmentId
     * @param state
     * @return
     */
    private String getAssignmentStatus(String assignmentId, SessionState state) {
        String rv = null;
        try {
            Session session = SessionManager.getCurrentSession();
            rv = AssignmentService.getAssignmentStatus(assignmentId);
        } catch (IdUnusedException e) {
            M_log.warn(this + " " + e.getMessage() + " " + assignmentId);
        } catch (PermissionException e) {
            M_log.warn(this + e.getMessage() + " " + assignmentId);
        }

        return rv;
    }

    /**
     * Set properties related to grading via an external scoring service. This service may be enabled for the
     * associated gradebook item.
     */
    protected void setScoringAgentProperties(Context context, Assignment assignment,
            AssignmentSubmission submission, boolean gradeView) {
        String associatedGbItem = StringUtils.trimToNull(assignment.getProperties()
                .getProperty(AssignmentService.PROP_ASSIGNMENT_ASSOCIATE_GRADEBOOK_ASSIGNMENT));
        if (submission != null && associatedGbItem != null && assignment.getContent().getTypeOfGrade() == 3) {
            ScoringService scoringService = (ScoringService) ComponentManager
                    .get("org.sakaiproject.scoringservice.api.ScoringService");
            ScoringAgent scoringAgent = scoringService.getDefaultScoringAgent();

            String gradebookUid = ToolManager.getInstance().getCurrentPlacement().getContext();
            boolean scoringAgentEnabled = scoringAgent != null && scoringAgent.isEnabled(gradebookUid, null);
            String studentId = submission.getSubmitterId();

            if (scoringAgentEnabled) {
                String gbItemName;
                if (assignment.getReference().equals(associatedGbItem)) {
                    // this gb item is controlled by this tool
                    gbItemName = assignment.getTitle();
                } else {
                    // this assignment was associated with an existing gb item
                    gbItemName = associatedGbItem;
                }
                GradebookService gbService = (GradebookService) ComponentManager
                        .get("org.sakaiproject.service.gradebook.GradebookService");
                org.sakaiproject.service.gradebook.shared.Assignment gbItem = null;
                try {
                    gbItem = gbService.getAssignment(gradebookUid, gbItemName);
                } catch (SecurityException se) {
                    // the gradebook method above is overzealous about security when retrieving the gb item by name. It doesn't
                    // allow student-role users to access the assignment via this method. So we
                    // have to retrieve all viewable gb items and filter to get the one we want, unfortunately, if we hit an exception.
                    // If gb item isn't released in the gb, scoring agent info will not be available.
                    List<org.sakaiproject.service.gradebook.shared.Assignment> viewableGbItems = gbService
                            .getViewableAssignmentsForCurrentUser(gradebookUid);
                    if (viewableGbItems != null && !viewableGbItems.isEmpty()) {
                        for (org.sakaiproject.service.gradebook.shared.Assignment viewableGbItem : viewableGbItems) {
                            if (gbItemName.equals(viewableGbItem.getName())) {
                                gbItem = viewableGbItem;
                                break;
                            }
                        }
                    }
                }

                if (gbItem != null) {
                    String gbItemId = Long.toString(gbItem.getId());

                    // Determine if a scoring component (like a rubric) has been associated with this gradebook item
                    ScoringComponent component = scoringService.getScoringComponent(scoringAgent.getAgentId(),
                            gradebookUid, gbItemId);
                    boolean scoringComponentEnabled = component != null;

                    context.put("scoringComponentEnabled", scoringComponentEnabled);

                    if (scoringComponentEnabled) {
                        context.put("scoringAgentImage", scoringAgent.getImageReference());
                        context.put("scoringAgentName", scoringAgent.getName());

                        // retrieve the appropriate url
                        if (gradeView) {
                            context.put("scoreUrl",
                                    scoringAgent.getScoreLaunchUrl(gradebookUid, gbItemId, studentId));
                            context.put("refreshScoreUrl", scoringService.getDefaultScoringAgent()
                                    .getScoreUrl(gradebookUid, gbItemId, studentId) + "&t=gb");
                            context.put("scoreText", rb.getFormattedMessage("scoringAgent.grade",
                                    new Object[] { scoringAgent.getName() }));
                        } else {
                            // only retrieve the graded rubric if grade has been released. otherwise, keep it generic
                            String scoreStudent = null;
                            if (submission.getGradeReleased()) {
                                scoreStudent = studentId;
                            }
                            context.put("scoreUrl",
                                    scoringAgent.getViewScoreLaunchUrl(gradebookUid, gbItemId, scoreStudent));
                            context.put("scoreText", rb.getFormattedMessage("scoringAgent.view",
                                    new Object[] { scoringAgent.getName() }));
                        }
                    }
                }
            }
        }
    }

}