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This plug-in contains the bulk of the Workbench implementation, and depends on JFace, SWT, and Core Runtime. It cannot be used independently from org.eclipse.ui. Workbench client plug-ins should not depend directly on this plug-in.

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/*******************************************************************************
 * Copyright (c) 2000, 2005 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.ui.internal;

import org.eclipse.jface.action.Action;
import org.eclipse.ui.IWorkbenchWindow;
import org.eclipse.ui.PlatformUI;
import org.eclipse.ui.actions.ActionFactory;

/**
 * Try to quit the application.
 */
public class QuitAction extends Action implements
        ActionFactory.IWorkbenchAction {

    /**
     * The workbench window; or null if this
     * action has been disposed.
     */
    private IWorkbenchWindow workbenchWindow;

    /**
     * Creates a new QuitAction.
     * 
     * @param window the window
     */
    public QuitAction(IWorkbenchWindow window) {
        // Although window is not currently used,
        // this follows the same pattern as other ActionFactory actions.
        if (window == null) {
            throw new IllegalArgumentException();
        }
        this.workbenchWindow = window;
        setText(WorkbenchMessages.Exit_text); 
        setToolTipText(WorkbenchMessages.Exit_toolTip);
        setActionDefinitionId("org.eclipse.ui.file.exit"); //$NON-NLS-1$
        window.getWorkbench().getHelpSystem().setHelp(this,
				IWorkbenchHelpContextIds.QUIT_ACTION);
    }

    /* (non-Javadoc)
     * Method declared on IAction.
     */
    public void run() {
        if (workbenchWindow == null) {
            // action has been disposed
            return;
        }
        PlatformUI.getWorkbench().close();
    }

    /* (non-Javadoc)
     * Method declared on ActionFactory.IWorkbenchAction.
     */
    public void dispose() {
        workbenchWindow = null;
    }

}