content: /*******************************************************************************
   * Copyright (c) 2000, 2008 IBM Corporation and others.
   * All rights reserved. This program and the accompanying materials
   * are made available under the terms of the Eclipse Public License v1.0
   * which accompanies this distribution, and is available at
   * http://www.eclipse.org/legal/epl-v10.html
   *
   * Contributors:
   *     IBM Corporation - initial API and implementation
   *******************************************************************************/
  package org.eclipse.wst.jsdt.internal.ui.workingsets;
  
  import org.eclipse.core.runtime.Assert;
  import org.eclipse.jface.action.ContributionItem;
  import org.eclipse.jface.resource.ImageDescriptor;
  import org.eclipse.swt.SWT;
  import org.eclipse.swt.events.SelectionAdapter;
  import org.eclipse.swt.events.SelectionEvent;
  import org.eclipse.swt.graphics.Image;
  import org.eclipse.swt.widgets.Menu;
  import org.eclipse.swt.widgets.MenuItem;
  import org.eclipse.ui.IWorkingSet;
  import org.eclipse.ui.IWorkingSetManager;
  import org.eclipse.ui.PlatformUI;
  
  /**
   * Menu contribution item which shows and lets select a working set.
   * 
   * 
   */
  public class WorkingSetMenuContributionItem extends ContributionItem {
  
  	private int fId;
  	private IWorkingSet fWorkingSet;
  	private WorkingSetFilterActionGroup fActionGroup;
  	private Image fImage;
  
  	/**
  	 * Constructor for WorkingSetMenuContributionItem.
  	 * 
  	 * @param id the id
  	 * @param actionGroup the action group
  	 * @param workingSet the working set
  	 */
  	public WorkingSetMenuContributionItem(int id, WorkingSetFilterActionGroup actionGroup, IWorkingSet workingSet) {
  		super(getId(id));
  		Assert.isNotNull(actionGroup);
  		Assert.isNotNull(workingSet);
  		fId= id;
  		fActionGroup= actionGroup;
  		fWorkingSet= workingSet;
  	}
  
  	/*
  	 * Overrides method from ContributionItem.
  	 */
  	public void fill(Menu menu, int index) {
  		MenuItem mi= new MenuItem(menu, SWT.RADIO, index);
  		
  		String name= fWorkingSet.getLabel();
  		
  		mi.setText("&" + fId + " " + name);  //$NON-NLS-1$  //$NON-NLS-2$
  		if (fImage == null) {
  			ImageDescriptor imageDescriptor= fWorkingSet.getImage();
  			if (imageDescriptor != null)
  				fImage= imageDescriptor.createImage();
  		}
  		mi.setImage(fImage);
  		mi.setSelection(fWorkingSet.equals(fActionGroup.getWorkingSet()));
  		mi.addSelectionListener(new SelectionAdapter() {
  			public void widgetSelected(SelectionEvent e) {
  				IWorkingSetManager manager= PlatformUI.getWorkbench().getWorkingSetManager();
  				fActionGroup.setWorkingSet(fWorkingSet, true);
  				manager.addRecentWorkingSet(fWorkingSet);
  			}
  		});
  	}
  	
  	/*
  	 * @see org.eclipse.jface.action.ContributionItem#dispose()
  	 * 
  	 */
  	public void dispose() {
  		if (fImage != null && !fImage.isDisposed())
  			fImage.dispose();
  		fImage= null;
  		
  		super.dispose();
  	}
  	
  	/*
  	 * @see org.eclipse.jface.action.IContributionItem#isDynamic()
  	 */
  	public boolean isDynamic() {
  		return true;
  	}
  
  	static String getId(int id) {
  		return WorkingSetMenuContributionItem.class.getName() + "." + id;  //$NON-NLS-1$
  	}
  }
  