| /******************************************************************************* |
| * Copyright (c) 2005, 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.viewers.update; |
| |
| import java.util.Iterator; |
| |
| import org.eclipse.debug.core.DebugPlugin; |
| import org.eclipse.debug.core.IMemoryBlockListener; |
| import org.eclipse.debug.core.model.IMemoryBlock; |
| import org.eclipse.debug.core.model.IMemoryBlockRetrieval; |
| import org.eclipse.debug.internal.ui.viewers.provisional.AbstractModelProxy; |
| import org.eclipse.debug.internal.ui.viewers.provisional.IModelDelta; |
| import org.eclipse.debug.internal.ui.viewers.provisional.IPresentationContext; |
| import org.eclipse.debug.internal.ui.viewers.provisional.ModelDelta; |
| import org.eclipse.debug.ui.memory.IMemoryRendering; |
| import org.eclipse.jface.viewers.ISelection; |
| import org.eclipse.jface.viewers.IStructuredSelection; |
| import org.eclipse.jface.viewers.StructuredSelection; |
| |
| public class MemoryRetrievalProxy extends AbstractModelProxy implements IMemoryBlockListener { |
| private IMemoryBlockRetrieval fRetrieval; |
| |
| public MemoryRetrievalProxy(IMemoryBlockRetrieval retrieval) |
| { |
| fRetrieval = retrieval; |
| |
| } |
| |
| public void memoryBlocksAdded(IMemoryBlock[] memory) { |
| |
| ModelDelta delta = new ModelDelta(fRetrieval, IModelDelta.NO_CHANGE); |
| |
| for (int i=0; i<memory.length; i++){ |
| IMemoryBlockRetrieval retrieval = (IMemoryBlockRetrieval)memory[i].getAdapter(IMemoryBlockRetrieval.class); |
| if (retrieval == null) |
| retrieval = memory[i].getDebugTarget(); |
| |
| if (retrieval != null) |
| { |
| if (retrieval == fRetrieval) |
| { |
| // select and take view's pinning state into account |
| delta.addNode(memory[i], IModelDelta.ADDED | IModelDelta.SELECT); |
| } |
| } |
| } |
| |
| fireModelChanged(delta); |
| } |
| |
| public void memoryBlocksRemoved(IMemoryBlock[] memory) { |
| ModelDelta delta = new ModelDelta(fRetrieval, IModelDelta.NO_CHANGE); |
| |
| // find a memory block to select |
| |
| for (int i=0; i<memory.length; i++){ |
| IMemoryBlockRetrieval retrieval = (IMemoryBlockRetrieval)memory[i].getAdapter(IMemoryBlockRetrieval.class); |
| if (retrieval == null) |
| retrieval = memory[i].getDebugTarget(); |
| |
| if (retrieval != null) |
| { |
| if (retrieval == fRetrieval) |
| { |
| // do not change selection if the memory block removed is not |
| // currently selected |
| if (isMemoryBlockSelected(getCurrentSelection(), memory[i])) |
| addSelectDeltaNode(delta); |
| delta.addNode(memory[i], IModelDelta.REMOVED); |
| } |
| } |
| } |
| |
| fireModelChanged(delta); |
| |
| } |
| |
| public void init(IPresentationContext context) { |
| super.init(context); |
| DebugPlugin.getDefault().getMemoryBlockManager().addListener(this); |
| } |
| |
| public synchronized void dispose() { |
| super.dispose(); |
| DebugPlugin.getDefault().getMemoryBlockManager().removeListener(this); |
| } |
| |
| private void addSelectDeltaNode(ModelDelta delta) |
| { |
| IMemoryBlock[] memoryBlocks = DebugPlugin.getDefault().getMemoryBlockManager().getMemoryBlocks(fRetrieval); |
| if (memoryBlocks != null && memoryBlocks.length > 0) |
| { |
| delta.addNode(memoryBlocks[0], IModelDelta.SELECT); |
| } |
| } |
| |
| private IStructuredSelection getCurrentSelection() |
| { |
| if (getPresentationContext() == null) |
| { |
| return StructuredSelection.EMPTY; |
| } |
| |
| ISelection selection = getPresentationContext().getPart().getSite().getSelectionProvider().getSelection(); |
| |
| if (selection instanceof IStructuredSelection) |
| return (IStructuredSelection)selection; |
| |
| return StructuredSelection.EMPTY; |
| } |
| |
| private boolean isMemoryBlockSelected(IStructuredSelection selection, IMemoryBlock memoryBlock) |
| { |
| if (!selection.isEmpty()) |
| { |
| Iterator iter = selection.iterator(); |
| while (iter.hasNext()) |
| { |
| Object sel = iter.next(); |
| if (sel == memoryBlock) |
| return true; |
| |
| if (sel instanceof IMemoryRendering) |
| { |
| if (((IMemoryRendering)sel).getMemoryBlock() == memoryBlock) |
| return true; |
| } |
| } |
| } |
| return false; |
| } |
| } |