/*******************************************************************************

 * Copyright (c) 2008 Nokia Corporation and/or its subsidiary(-ies).

 * 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:

 *     Nokia Corporation - initial implementation 

 *******************************************************************************/

package org.eclipse.swt.internal.qt.graphics;

import org.eclipse.swt.events.DisposeListener; 

import org.eclipse.swt.events.DisposeEvent;

/**

 * Listener for widget disposal for automatic surface cache cleanup

 */ 

final class SurfaceCacheItemDisposeListener implements DisposeListener {

    public void widgetDisposed(DisposeEvent e) {

        SurfaceCache cache = SurfaceCache.getInstance();

        if (cache != null) {

            try {

                cache.deleteSurface(e.widget);

            } catch (IllegalStateException is) {

                // ignore 

            }

        }    

    }

}