/*******************************************************************************
* Copyright (c) 2006 The Pampered Chef, Inc. 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:
* The Pampered Chef, Inc. - initial API and implementation
******************************************************************************/
package org.eclipse.jface.internal.databinding.provisional.swt;
import org.eclipse.core.databinding.observable.value.AbstractObservableValue;
import org.eclipse.jface.databinding.swt.ISWTObservableValue;
import org.eclipse.jface.databinding.swt.SWTObservables;
import org.eclipse.swt.events.DisposeEvent;
import org.eclipse.swt.events.DisposeListener;
import org.eclipse.swt.widgets.Widget;
/**
* NON-API - An abstract superclass for observable values that gurantees that the
* observable will be disposed when the control to which it is attached is
* disposed.
*
* @since 1.1
*/
public abstract class AbstractSWTObservableValue extends AbstractObservableValue implements ISWTObservableValue {
private final Widget widget;
/**
* Standard constructor for an SWT ObservableValue. Makes sure that
* the observable gets disposed when the SWT widget is disposed.
*
* @param widget
*/
protected AbstractSWTObservableValue(Widget widget) {
super(SWTObservables.getRealm(widget.getDisplay()));
this.widget = widget;
widget.addDisposeListener(disposeListener);
}
private DisposeListener disposeListener = new DisposeListener() {
public void widgetDisposed(DisposeEvent e) {
AbstractSWTObservableValue.this.dispose();
}
};
/**
* @return Returns the widget.
*/
public Widget getWidget() {
return widget;
}
}