javauis/eswt_qt/org.eclipse.swt/Eclipse_SWT_PI/qt/org/eclipse/swt/internal/qt/graphics/SurfaceCacheItemDisposeListener.java
/*******************************************************************************
* 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
}
}
}
}