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/*******************************************************************************
* Copyright (c) 2008 Matthew Hall 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:
* Matthew Hall - initial API and implementation
* Matthew Hall - bugs 263413, 264286
******************************************************************************/
package org.eclipse.jface.databinding.viewers;
import org.eclipse.core.databinding.observable.Realm;
import org.eclipse.core.databinding.observable.list.IObservableList;
import org.eclipse.core.databinding.property.list.SimpleListProperty;
import org.eclipse.jface.databinding.swt.SWTObservables;
import org.eclipse.jface.internal.databinding.viewers.ViewerObservableListDecorator;
import org.eclipse.jface.viewers.Viewer;
/**
* Abstract list property implementation for {@link Viewer} properties. This
* class implements some basic behavior that viewer properties are generally
* expected to have, namely:
* <ul>
* <li>Calling {@link #observe(Object)} should create the observable on the
* display realm of the viewer's control, rather than the current default realm
* <li>All <code>observe()</code> methods should return an
* {@link IViewerObservableList}
* </ul>
*
* @since 1.3
*/
public abstract class ViewerListProperty extends SimpleListProperty implements
IViewerListProperty {
public IObservableList observe(Object source) {
if (source instanceof Viewer) {
return observe((Viewer) source);
}
return super.observe(source);
}
public IObservableList observe(Realm realm, Object source) {
IObservableList observable = super.observe(realm, source);
if (source instanceof Viewer)
observable = new ViewerObservableListDecorator(observable,
(Viewer) source);
return observable;
}
public IViewerObservableList observe(Viewer viewer) {
return (IViewerObservableList) observe(SWTObservables.getRealm(viewer
.getControl().getDisplay()), viewer);
}
}
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