Bug 265856 [Viewers] TreeViewer Widget Dispose Error
bundles/org.eclipse.jface/src/org/eclipse/jface/viewers/SWTFocusCellManager.java
/*******************************************************************************
 * Copyright (c) 2007, 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
 *     Tom Schindl <tom.schindl@bestsolution.at> - initial API and implementation
 *                                               - bug fix for bug 187189, 182800, 215069
 *******************************************************************************/
package org.eclipse.jface.viewers;
import org.eclipse.core.runtime.Assert;
import org.eclipse.swt.SWT;
import org.eclipse.swt.events.DisposeEvent;
import org.eclipse.swt.events.DisposeListener;
import org.eclipse.swt.graphics.Point;
import org.eclipse.swt.widgets.Event;
import org.eclipse.swt.widgets.Listener;
/**
 * This class is responsible to provide cell management base features for the
 * SWT-Controls {@link org.eclipse.swt.widgets.Table} and
 * {@link org.eclipse.swt.widgets.Tree}.
 *
 * @since 3.3
 *
 */
abstract class SWTFocusCellManager {