| /******************************************************************************* |
| * Copyright (c) 2006 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.TreeModelContentProvider; |
| 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 TreeModelContentProvider createContentProvider() { |
| return new MemoryViewTreeModelContentProvider(); |
| } |
| |
| } |