Java tutorial
/** * Copyright (c) 2008-2012 The Sakai Foundation * * 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.osedu.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. */ package org.sakaiproject.profile2.tool.pages.panels; import org.apache.commons.lang.StringUtils; import org.apache.log4j.Logger; import org.apache.wicket.ajax.AjaxRequestTarget; import org.apache.wicket.ajax.markup.html.AjaxLink; import org.apache.wicket.ajax.markup.html.navigation.paging.AjaxPagingNavigator; import org.apache.wicket.behavior.AttributeAppender; import org.apache.wicket.markup.html.WebMarkupContainer; import org.apache.wicket.markup.html.basic.Label; import org.apache.wicket.markup.html.panel.Panel; import org.apache.wicket.markup.repeater.Item; import org.apache.wicket.markup.repeater.data.DataView; import org.apache.wicket.model.Model; import org.apache.wicket.model.ResourceModel; import org.apache.wicket.spring.injection.annot.SpringBean; import org.sakaiproject.profile2.logic.ProfileMessagingLogic; import org.sakaiproject.profile2.logic.ProfilePreferencesLogic; import org.sakaiproject.profile2.logic.ProfilePrivacyLogic; import org.sakaiproject.profile2.logic.SakaiProxy; import org.sakaiproject.profile2.model.Message; import org.sakaiproject.profile2.model.MessageParticipant; import org.sakaiproject.profile2.model.MessageThread; import org.sakaiproject.profile2.model.ProfilePreferences; import org.sakaiproject.profile2.model.ProfilePrivacy; import org.sakaiproject.profile2.tool.components.ProfileImage; import org.sakaiproject.profile2.tool.dataproviders.MessageThreadsDataProvider; import org.sakaiproject.profile2.tool.pages.MyMessages; import org.sakaiproject.profile2.tool.pages.ViewProfile; import org.sakaiproject.profile2.util.ProfileConstants; import org.sakaiproject.profile2.util.ProfileUtils; public class MessageThreadsView extends Panel { private static final long serialVersionUID = 1L; private static final Logger log = Logger.getLogger(ConfirmedFriends.class); @SpringBean(name = "org.sakaiproject.profile2.logic.SakaiProxy") protected SakaiProxy sakaiProxy; @SpringBean(name = "org.sakaiproject.profile2.logic.ProfilePreferencesLogic") protected ProfilePreferencesLogic preferencesLogic; @SpringBean(name = "org.sakaiproject.profile2.logic.ProfileMessagingLogic") protected ProfileMessagingLogic messagingLogic; @SpringBean(name = "org.sakaiproject.profile2.logic.ProfilePrivacyLogic") protected ProfilePrivacyLogic privacyLogic; public MessageThreadsView(final String id) { super(id); log.debug("MessageThreads()"); //get current user final String currentUserUuid = sakaiProxy.getCurrentUserId(); //heading /* Label heading = new Label("messageThreadListHeading", new ResourceModel("heading.messages")); add(heading); */ //no messages label Label noMessagesLabel = new Label("noMessagesLabel"); noMessagesLabel.setOutputMarkupPlaceholderTag(true); add(noMessagesLabel); //container which wraps list final WebMarkupContainer messageThreadListContainer = new WebMarkupContainer("messageThreadListContainer"); messageThreadListContainer.setOutputMarkupId(true); //get our list of messages final MessageThreadsDataProvider provider = new MessageThreadsDataProvider(currentUserUuid); int numMessages = (int) provider.size(); //message list DataView<MessageThread> messageThreadList = new DataView<MessageThread>("messageThreadList", provider) { private static final long serialVersionUID = 1L; protected void populateItem(final Item<MessageThread> item) { final MessageThread thread = (MessageThread) item.getDefaultModelObject(); Message message = thread.getMostRecentMessage(); String messageFromUuid = message.getFrom(); //we need to know if this message has been read or not so we can style it accordingly //we only need this if we didn't send the message MessageParticipant participant = null; boolean messageOwner = false; if (StringUtils.equals(messageFromUuid, currentUserUuid)) { messageOwner = true; } if (!messageOwner) { participant = messagingLogic.getMessageParticipant(message.getId(), currentUserUuid); } //prefs and privacy ProfilePreferences prefs = preferencesLogic.getPreferencesRecordForUser(messageFromUuid); ProfilePrivacy privacy = privacyLogic.getPrivacyRecordForUser(messageFromUuid); //photo link AjaxLink<String> photoLink = new AjaxLink<String>("photoLink", new Model<String>(messageFromUuid)) { private static final long serialVersionUID = 1L; public void onClick(AjaxRequestTarget target) { setResponsePage(new ViewProfile(getModelObject())); } }; //photo ProfileImage messagePhoto = new ProfileImage("messagePhoto", new Model<String>(messageFromUuid)); messagePhoto.setSize(ProfileConstants.PROFILE_IMAGE_THUMBNAIL); photoLink.add(messagePhoto); item.add(photoLink); //name link AjaxLink<String> messageFromLink = new AjaxLink<String>("messageFromLink", new Model<String>(messageFromUuid)) { private static final long serialVersionUID = 1L; public void onClick(AjaxRequestTarget target) { setResponsePage(new ViewProfile(getModelObject())); } }; messageFromLink.add(new Label("messageFromName", new Model<String>(sakaiProxy.getUserDisplayName(messageFromUuid)))); item.add(messageFromLink); //date item.add(new Label("messageDate", ProfileUtils.convertDateToString(message.getDatePosted(), ProfileConstants.MESSAGE_DISPLAY_DATE_FORMAT))); //subject link AjaxLink<MessageThread> messageSubjectLink = new AjaxLink<MessageThread>("messageSubjectLink", new Model<MessageThread>(thread)) { private static final long serialVersionUID = 1L; public void onClick(AjaxRequestTarget target) { //load messageview panel //setResponsePage(new MyMessageView(id, currentUserUuid, getModelObject().getId(), getModelObject().getSubject())); //load MyMessages with some params that will then load a diff tab panel and show this message panel. setResponsePage(new MyMessages(thread.getId())); } }; messageSubjectLink.add(new Label("messageSubject", new Model<String>(thread.getSubject()))); item.add(messageSubjectLink); //message body item.add(new Label("messageBody", new Model<String>(StringUtils.abbreviate(message.getMessage(), ProfileConstants.MESSAGE_PREVIEW_MAX_LENGTH)))); //unread notice for accessibility, off unless its new. Label messageUnreadNotice = new Label("messageUnreadNotice", new ResourceModel("accessibility.messages.unread")); messageUnreadNotice.setVisible(false); item.add(messageUnreadNotice); //highlight if new, also render accessibility notice if (!messageOwner && !participant.isRead()) { item.add(new AttributeAppender("class", true, new Model<String>("unread-message"), " ")); messageUnreadNotice.setVisible(true); } item.setOutputMarkupId(true); } }; messageThreadList.setOutputMarkupId(true); messageThreadList.setItemsPerPage(ProfileConstants.MAX_MESSAGES_PER_PAGE); messageThreadListContainer.add(messageThreadList); add(messageThreadListContainer); //pager AjaxPagingNavigator pager = new AjaxPagingNavigator("navigator", messageThreadList); add(pager); //initially, if no message threads to show, hide container and pager, set and show label if (numMessages == 0) { messageThreadListContainer.setVisible(false); pager.setVisible(false); noMessagesLabel.setDefaultModel(new ResourceModel("text.messages.none")); noMessagesLabel.setVisible(true); } //also, if num less than num required for pager, hide it if (numMessages <= ProfileConstants.MAX_MESSAGES_PER_PAGE) { pager.setVisible(false); } } }