ext.org.eclipse.jdt.internal.ui.workingsets.WorkingSetMenuContributionItem.java Source code

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Here is the source code for ext.org.eclipse.jdt.internal.ui.workingsets.WorkingSetMenuContributionItem.java

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/*******************************************************************************
 * Copyright (c) 2000, 2011 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 ext.org.eclipse.jdt.internal.ui.workingsets;

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.core.runtime.Assert;

import org.eclipse.jface.action.ContributionItem;
import org.eclipse.jface.resource.ImageDescriptor;

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.
 *
 * @since 2.0
 */
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.
     */
    @Override
    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.getImageDescriptor();
            if (imageDescriptor != null)
                fImage = imageDescriptor.createImage();
        }
        mi.setImage(fImage);
        mi.setSelection(fWorkingSet.equals(fActionGroup.getWorkingSet()));
        mi.addSelectionListener(new SelectionAdapter() {
            @Override
            public void widgetSelected(SelectionEvent e) {
                IWorkingSetManager manager = PlatformUI.getWorkbench().getWorkingSetManager();
                fActionGroup.setWorkingSet(fWorkingSet, true);
                manager.addRecentWorkingSet(fWorkingSet);
            }
        });
    }

    /*
     * @see org.eclipse.jface.action.ContributionItem#dispose()
     * @since 3.0
     */
    @Override
    public void dispose() {
        if (fImage != null && !fImage.isDisposed())
            fImage.dispose();
        fImage = null;

        super.dispose();
    }

    /*
     * @see org.eclipse.jface.action.IContributionItem#isDynamic()
     */
    @Override
    public boolean isDynamic() {
        return true;
    }

    static String getId(int id) {
        return WorkingSetMenuContributionItem.class.getName() + "." + id; //$NON-NLS-1$
    }
}