org.sakaiproject.attendance.tool.pages.panels.PrintPanel.java Source code

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Here is the source code for org.sakaiproject.attendance.tool.pages.panels.PrintPanel.java

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/*
 *  Copyright (c) 2016, University of Dayton
 *
 *  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://opensource.org/licenses/ecl2
 *
 *  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.attendance.tool.pages.panels;

import org.apache.wicket.markup.html.basic.Label;
import org.apache.wicket.markup.html.form.*;
import org.apache.wicket.model.IModel;
import org.apache.wicket.model.Model;
import org.apache.wicket.model.PropertyModel;
import org.apache.wicket.request.handler.resource.ResourceStreamRequestHandler;
import org.apache.wicket.util.resource.AbstractResourceStreamWriter;
import org.sakaiproject.attendance.model.AttendanceEvent;
import org.sakaiproject.user.api.User;

import java.io.IOException;
import java.io.OutputStream;
import java.util.Arrays;
import java.util.Collections;
import java.util.Comparator;
import java.util.List;

/**
 * PrintPanel is a panel which allows users to pring an Attendance Sheet or Sign-in Sheet
 *
 * @author David Bauer [dbauer1 (at) udayton (dot) edu]
 */
public class PrintPanel extends BasePanel {
    private static final long serialVersionUID = 1L;
    //TODO: Internationalize
    private static final List<String> PRINT_OPTIONS = Arrays.asList("Sign-In Sheet", "Attendance Sheet");

    private IModel<AttendanceEvent> eventModel;
    private DropDownChoice<String> groupChoice;
    private transient List<User> userList;
    private String groupOrSiteTitle;

    private String selected = "Sign-In Sheet";

    public PrintPanel(String id, IModel<AttendanceEvent> event) {
        super(id, event);
        this.eventModel = event;

        add(createPrintForm());
    }

    private Form<?> createPrintForm() {

        final Form<?> printForm = new Form<Void>("print-form") {

            @Override
            protected void onSubmit() {

                if (groupChoice.getModelObject() == null) {
                    userList = sakaiProxy.getCurrentSiteMembership();
                    groupOrSiteTitle = sakaiProxy.getCurrentSiteTitle();
                } else {
                    userList = sakaiProxy.getGroupMembershipForCurrentSite(groupChoice.getModelObject());
                    groupOrSiteTitle = sakaiProxy.getGroupTitleForCurrentSite(groupChoice.getModelObject());
                }

                final boolean isSignIn = selected.equals("Sign-In Sheet");
                String filename = eventModel.getObject().getName().trim().replaceAll("\\s+", "")
                        + (isSignIn ? "-signin.pdf" : "-attendance.pdf");

                AbstractResourceStreamWriter rstream = new AbstractResourceStreamWriter() {
                    @Override
                    public void write(OutputStream outputStream) throws IOException {
                        if (isSignIn) {
                            pdfExporter.createSignInPdf(eventModel.getObject(), outputStream, userList,
                                    groupOrSiteTitle);
                        } else {
                            pdfExporter.createAttendanceSheetPdf(eventModel.getObject(), outputStream, userList,
                                    groupOrSiteTitle);
                        }
                    }
                };

                ResourceStreamRequestHandler handler = new ResourceStreamRequestHandler(rstream, filename);
                getRequestCycle().scheduleRequestHandlerAfterCurrent(handler);
            }
        };

        if (eventModel.getObject() != null) {
            printForm.add(new Label("event-name", eventModel.getObject().getName()));
            printForm.add(new Label("event-date", eventModel.getObject().getStartDateTime()));
        } else {
            printForm.add(new Label("event-name", ""));
            printForm.add(new Label("event-date", ""));
        }

        List<String> groupIds = sakaiProxy.getAvailableGroupsForCurrentSite();
        Collections.sort(groupIds, new Comparator<String>() {
            @Override
            public int compare(String o1, String o2) {
                return sakaiProxy.getGroupTitleForCurrentSite(o1)
                        .compareTo(sakaiProxy.getGroupTitleForCurrentSite(o2));
            }
        });
        groupChoice = new DropDownChoice<String>("group-choice", new Model<String>(), groupIds,
                new IChoiceRenderer<String>() {
                    @Override
                    public Object getDisplayValue(String s) {
                        return sakaiProxy.getGroupTitleForCurrentSite(s);
                    }

                    @Override
                    public String getIdValue(String s, int i) {
                        return s;
                    }
                });
        groupChoice.setNullValid(true);
        printForm.add(groupChoice);

        RadioChoice<String> printFormat = new RadioChoice<String>("print-format",
                new PropertyModel<String>(this, "selected"), PRINT_OPTIONS);

        printForm.add(printFormat);

        SubmitLink print = new SubmitLink("print");

        printForm.add(print);

        return printForm;
    }
}