case-study/jdt-before/ui/org/eclipse/jdt/internal/ui/workingsets/WorkingSetMenuContributionItem.java

   1 /*******************************************************************************
   2  * Copyright (c) 2000, 2011 IBM Corporation and others.
   3  * All rights reserved. This program and the accompanying materials
   4  * are made available under the terms of the Eclipse Public License v1.0
   5  * which accompanies this distribution, and is available at
   6  * http://www.eclipse.org/legal/epl-v10.html
   7  *
   8  * Contributors:
   9  *     IBM Corporation - initial API and implementation
  10  *******************************************************************************/
  11 package org.eclipse.jdt.internal.ui.workingsets;
  12
  13 import org.eclipse.swt.SWT;
  14 import org.eclipse.swt.events.SelectionAdapter;
  15 import org.eclipse.swt.events.SelectionEvent;
  16 import org.eclipse.swt.graphics.Image;
  17 import org.eclipse.swt.widgets.Menu;
  18 import org.eclipse.swt.widgets.MenuItem;
  19
  20 import org.eclipse.core.runtime.Assert;
  21
  22 import org.eclipse.jface.action.ContributionItem;
  23 import org.eclipse.jface.resource.ImageDescriptor;
  24
  25 import org.eclipse.ui.IWorkingSet;
  26 import org.eclipse.ui.IWorkingSetManager;
  27 import org.eclipse.ui.PlatformUI;
  28
  29 /**
  30  * Menu contribution item which shows and lets select a working set.
  31  *
  32  * @since 2.0
  33  */
  34 public class WorkingSetMenuContributionItem extends ContributionItem {
  35
  36         private int fId;
  37         private IWorkingSet fWorkingSet;
  38         private WorkingSetFilterActionGroup fActionGroup;
  39         private Image fImage;
  40
  41         /**
  42          * Constructor for WorkingSetMenuContributionItem.
  43          *
  44          * @param id the id
  45          * @param actionGroup the action group
  46          * @param workingSet the working set
  47          */
  48         public WorkingSetMenuContributionItem(int id, WorkingSetFilterActionGroup actionGroup, IWorkingSet workingSet) {
  49                 super(getId(id));
  50                 Assert.isNotNull(actionGroup);
  51                 Assert.isNotNull(workingSet);
  52                 fId= id;
  53                 fActionGroup= actionGroup;
  54                 fWorkingSet= workingSet;
  55         }
  56
  57         /*
  58          * Overrides method from ContributionItem.
  59          */
  60         @Override
  61         public void fill(Menu menu, int index) {
  62                 MenuItem mi= new MenuItem(menu, SWT.RADIO, index);
  63
  64                 String name= fWorkingSet.getLabel();
  65
  66                 mi.setText("&" + fId + " " + name);  //$NON-NLS-1$  //$NON-NLS-2$
  67                 if (fImage == null) {
  68                         ImageDescriptor imageDescriptor= fWorkingSet.getImageDescriptor();
  69                         if (imageDescriptor != null)
  70                                 fImage= imageDescriptor.createImage();
  71                 }
  72                 mi.setImage(fImage);
  73                 mi.setSelection(fWorkingSet.equals(fActionGroup.getWorkingSet()));
  74                 mi.addSelectionListener(new SelectionAdapter() {
  75                         @Override
  76                         public void widgetSelected(SelectionEvent e) {
  77                                 IWorkingSetManager manager= PlatformUI.getWorkbench().getWorkingSetManager();
  78                                 fActionGroup.setWorkingSet(fWorkingSet, true);
  79                                 manager.addRecentWorkingSet(fWorkingSet);
  80                         }
  81                 });
  82         }
  83
  84         /*
  85          * @see org.eclipse.jface.action.ContributionItem#dispose()
  86          * @since 3.0
  87          */
  88         @Override
  89         public void dispose() {
  90                 if (fImage != null && !fImage.isDisposed())
  91                         fImage.dispose();
  92                 fImage= null;
  93
  94                 super.dispose();
  95         }
  96
  97         /*
  98          * @see org.eclipse.jface.action.IContributionItem#isDynamic()
  99          */
 100         @Override
 101         public boolean isDynamic() {
 102                 return true;
 103         }
 104
 105         static String getId(int id) {
 106                 return WorkingSetMenuContributionItem.class.getName() + "." + id;  //$NON-NLS-1$
 107         }
 108 }