/*******************************************************************************
* Copyright (c) 2006, 2009 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
*******************************************************************************/
package org.eclipse.debug.internal.ui.views.memory;
import org.eclipse.debug.internal.ui.viewers.model.ITreeModelContentProvider;
import org.eclipse.debug.internal.ui.viewers.model.provisional.IPresentationContext;
import org.eclipse.debug.internal.ui.viewers.model.provisional.TreeModelViewer;
import org.eclipse.swt.widgets.Composite;
/**
* Customized tree viewer for the Memory View
* This Tree Viewer has a specialized update policy for the memory view.
* When the model fires a ADDED delta, the update policy handles the event as follows:
* If the ADDED delta is accompanied by SELECT, and the added element is an memory blok, then
* the udpate policy asks the Memory View if the it is currently pinned to a memory block. If the view
* is currently pinned, then the SELECT delta is ignored.
*
* If the ADDED delta and SELECT delta are recieved in separate nodes, then the delta will be handled as-is and would
* not take the pinning state of the memory view into account.
*
*/
public class MemoryViewTreeViewer extends TreeModelViewer {
public MemoryViewTreeViewer(Composite parent, int style,
IPresentationContext context) {
super(parent, style, context);
}
/*
* Need to have a customized content provider to define a special update policy for the Memory View
* (non-Javadoc)
* @see org.eclipse.debug.internal.ui.viewers.model.InternalTreeModelViewer#createContentProvider()
*/
protected ITreeModelContentProvider createContentProvider() {
return new MemoryViewTreeModelContentProvider();
}
}
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