| /******************************************************************************* |
| * Copyright (c) 2005, 2007 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.examples.ui.pda.adapters; |
| |
| import org.eclipse.debug.core.DebugEvent; |
| import org.eclipse.debug.core.DebugException; |
| import org.eclipse.debug.core.DebugPlugin; |
| import org.eclipse.debug.core.ILaunch; |
| import org.eclipse.debug.core.ILaunchManager; |
| import org.eclipse.debug.core.model.IDebugTarget; |
| import org.eclipse.debug.core.model.IStackFrame; |
| import org.eclipse.debug.core.model.IThread; |
| import org.eclipse.debug.examples.core.pda.model.PDAThread; |
| import org.eclipse.debug.internal.ui.viewers.model.provisional.IModelDelta; |
| import org.eclipse.debug.internal.ui.viewers.model.provisional.ModelDelta; |
| import org.eclipse.debug.internal.ui.viewers.provisional.AbstractModelProxy; |
| import org.eclipse.debug.internal.ui.viewers.update.DebugEventHandler; |
| |
| |
| /** |
| * @since 3.2 |
| */ |
| public class PDAThreadEventHandler extends DebugEventHandler { |
| |
| private IStackFrame fPrev = null; |
| |
| /** |
| * Constructs and event handler for a threads in the given viewer. |
| * |
| * @param viewer |
| */ |
| public PDAThreadEventHandler(AbstractModelProxy proxy) { |
| super(proxy); |
| } |
| |
| protected void handleSuspend(DebugEvent event) { |
| IThread thread = (IThread) event.getSource(); |
| int extras = IModelDelta.STATE; |
| if (event.getDetail() == DebugEvent.BREAKPOINT | event.getDetail() == DebugEvent.CLIENT_REQUEST) { |
| extras = IModelDelta.EXPAND; |
| } |
| fireDeltaUpdatingTopFrame(thread, IModelDelta.NO_CHANGE | extras); |
| } |
| |
| private boolean isEqual(Object o1, Object o2) { |
| if (o1 == o2) { |
| return true; |
| } |
| if (o1 == null) { |
| return false; |
| } |
| return o1.equals(o2); |
| } |
| |
| protected void handleResume(DebugEvent event) { |
| IThread thread = (IThread) event.getSource(); |
| fireDeltaAndClearTopFrame(thread, IModelDelta.STATE | IModelDelta.CONTENT); |
| } |
| |
| protected void handleCreate(DebugEvent event) { |
| fireDeltaAndClearTopFrame((IThread) event.getSource(), IModelDelta.ADDED); |
| } |
| |
| protected void handleTerminate(DebugEvent event) { |
| fireDeltaAndClearTopFrame((IThread) event.getSource(), IModelDelta.REMOVED); |
| } |
| |
| protected void handleChange(DebugEvent event) { |
| fireDeltaUpdatingTopFrame((IThread) event.getSource(), IModelDelta.STATE); |
| } |
| |
| protected void handleLateSuspend(DebugEvent suspend, DebugEvent resume) { |
| IThread thread = (IThread) suspend.getSource(); |
| fireDeltaUpdatingTopFrame(thread, IModelDelta.CONTENT | IModelDelta.EXPAND); |
| } |
| |
| protected void handleSuspendTimeout(DebugEvent event) { |
| IThread thread = (IThread) event.getSource(); |
| fireDeltaAndClearTopFrame(thread, IModelDelta.CONTENT); |
| } |
| |
| private ModelDelta buildRootDelta() { |
| return new ModelDelta(getLaunchManager(), IModelDelta.NO_CHANGE); |
| } |
| |
| private ILaunchManager getLaunchManager() { |
| return DebugPlugin.getDefault().getLaunchManager(); |
| } |
| |
| protected ModelDelta addTarget(ModelDelta delta, IThread thread) { |
| ILaunch launch = thread.getLaunch(); |
| Object[] children = launch.getChildren(); |
| delta = delta.addNode(launch, indexOf(getLaunchManager().getLaunches(), launch), IModelDelta.NO_CHANGE, children.length); |
| IDebugTarget debugTarget = thread.getDebugTarget(); |
| int numFrames = -1; |
| try { |
| numFrames = thread.getStackFrames().length; |
| } catch (DebugException e) { |
| } |
| return delta.addNode(debugTarget, indexOf(children, debugTarget), IModelDelta.NO_CHANGE, numFrames); |
| } |
| |
| private void fireDeltaAndClearTopFrame(IThread thread, int flags) { |
| ModelDelta delta = buildRootDelta(); |
| addTarget(delta, thread); |
| synchronized (this) { |
| fPrev = null; |
| } |
| fireDelta(delta); |
| } |
| |
| private void fireDeltaUpdatingTopFrame(IThread thread, int flags) { |
| ModelDelta delta = buildRootDelta(); |
| ModelDelta node = addTarget(delta, thread); |
| synchronized (this) { |
| IStackFrame prev = fPrev; |
| IStackFrame frame = null; |
| try { |
| frame = thread.getTopStackFrame(); |
| } catch (DebugException e) { |
| } |
| if (isEqual(frame, prev)) { |
| node.setFlags(flags); |
| } else { |
| node.setFlags(flags | IModelDelta.CONTENT); |
| } |
| if (frame != null) { |
| node.addNode(frame, 0, IModelDelta.STATE | IModelDelta.SELECT, 0); |
| } |
| fPrev = frame; |
| } |
| fireDelta(delta); |
| } |
| |
| protected boolean handlesEvent(DebugEvent event) { |
| return event.getSource() instanceof PDAThread; |
| } |
| |
| } |