| /******************************************************************************* |
| * Copyright (c) 2005, 2009 IBM Corporation and others. |
| * |
| * This program and the accompanying materials |
| * are made available under the terms of the Eclipse Public License 2.0 |
| * which accompanies this distribution, and is available at |
| * https://www.eclipse.org/legal/epl-2.0/ |
| * |
| * SPDX-License-Identifier: EPL-2.0 |
| * |
| * Contributors: |
| * IBM Corporation - initial API and implementation |
| *******************************************************************************/ |
| package org.eclipse.debug.internal.ui.viewers.update; |
| |
| 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.IBreakpoint; |
| import org.eclipse.debug.core.model.IDebugElement; |
| 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.internal.ui.viewers.model.provisional.IModelDelta; |
| import org.eclipse.debug.internal.ui.viewers.model.provisional.ModelDelta; |
| import org.eclipse.jface.viewers.Viewer; |
| |
| /** |
| * Default model proxy for a debug target. |
| * |
| * @since 3.2 |
| */ |
| public class DebugTargetProxy extends EventHandlerModelProxy { |
| |
| private IDebugTarget fDebugTarget; |
| |
| public DebugTargetProxy(IDebugTarget target) { |
| fDebugTarget = target; |
| } |
| |
| /* (non-Javadoc) |
| * @see org.eclipse.debug.internal.ui.viewers.update.EventHandlerModelProxy#dispose() |
| */ |
| @Override |
| public synchronized void dispose() { |
| super.dispose(); |
| fDebugTarget = null; |
| } |
| |
| /* (non-Javadoc) |
| * @see org.eclipse.debug.internal.ui.viewers.update.EventHandlerModelProxy#containsEvent(org.eclipse.debug.core.DebugEvent) |
| */ |
| @Override |
| protected boolean containsEvent(DebugEvent event) { |
| Object source = event.getSource(); |
| if (source instanceof IDebugElement) { |
| IDebugTarget debugTarget = ((IDebugElement) source).getDebugTarget(); |
| // an expression can return null for debug target |
| if (debugTarget != null) { |
| return debugTarget.equals(fDebugTarget); |
| } |
| } |
| return false; |
| } |
| |
| /* (non-Javadoc) |
| * @see org.eclipse.debug.internal.ui.viewers.update.EventHandlerModelProxy#createEventHandlers() |
| */ |
| @Override |
| protected DebugEventHandler[] createEventHandlers() { |
| ThreadEventHandler threadEventHandler = new ThreadEventHandler(this); |
| return new DebugEventHandler[] { new DebugTargetEventHandler(this), threadEventHandler, |
| new StackFrameEventHandler(this, threadEventHandler) }; |
| } |
| |
| /* (non-Javadoc) |
| * @see org.eclipse.debug.internal.ui.viewers.provisional.IModelProxy#installed(org.eclipse.jface.viewers.Viewer) |
| */ |
| @Override |
| public void installed(Viewer viewer) { |
| // select any thread that is already suspended after installation |
| IDebugTarget target = fDebugTarget; |
| if (target != null) { |
| ModelDelta delta = getNextSuspendedThreadDelta(null, false); |
| if (delta == null) { |
| try { |
| ILaunchManager manager = DebugPlugin.getDefault().getLaunchManager(); |
| ILaunch launch = target.getLaunch(); |
| int launchIndex = getLaunchIndex(launch); |
| int targetIndex = getTargetIndex(target); |
| delta = new ModelDelta(manager, IModelDelta.NO_CHANGE); |
| ModelDelta node = delta.addNode(launch, launchIndex, IModelDelta.NO_CHANGE, target.getLaunch().getChildren().length); |
| node = node.addNode(target, targetIndex, IModelDelta.EXPAND | IModelDelta.SELECT, target.getThreads().length); |
| } catch (DebugException e) { |
| // In case of exception do not fire delta |
| return; |
| } |
| } |
| // expand the target if no suspended thread |
| fireModelChanged(delta); |
| } |
| } |
| |
| protected ModelDelta getNextSuspendedThreadDelta(IThread currentThread, boolean reverse) { |
| IDebugTarget target = fDebugTarget; |
| if (target != null) { |
| try { |
| IThread[] threads = target.getThreads(); |
| IThread chosen = null; |
| int threadIndex = -1; |
| // select the first thread with a breakpoint, or the first suspended thread |
| // if none have breakpoints |
| boolean takeNext = currentThread == null; |
| int startIdx = reverse ? threads.length - 1 : 0; |
| int endIdx = reverse ? -1 : threads.length; |
| int increment = reverse ? -1 : 1; |
| for (int i = startIdx; i != endIdx; i = i + increment) { |
| IThread thread = threads[i]; |
| if (takeNext && thread.isSuspended()) { |
| IBreakpoint[] bps = thread.getBreakpoints(); |
| if (bps != null && bps.length > 0) { |
| chosen = thread; |
| threadIndex = i; |
| break; |
| } else { |
| if (chosen == null) { |
| chosen = thread; |
| threadIndex = i; |
| } |
| } |
| } |
| takeNext = takeNext || thread.equals(currentThread); |
| } |
| if (chosen != null) { |
| IStackFrame frame = chosen.getTopStackFrame(); |
| if (frame != null) { |
| ILaunchManager manager = DebugPlugin.getDefault().getLaunchManager(); |
| ILaunch launch = target.getLaunch(); |
| int launchIndex = getLaunchIndex(launch); |
| int targetIndex = getTargetIndex(target); |
| int stackFrameIndex = getStackFrameIndex(frame); |
| ModelDelta delta = new ModelDelta(manager, IModelDelta.NO_CHANGE); |
| ModelDelta node = delta.addNode(launch, launchIndex, IModelDelta.NO_CHANGE, target.getLaunch().getChildren().length); |
| node = node.addNode(target, targetIndex, IModelDelta.NO_CHANGE, threads.length); |
| node = node.addNode(chosen, threadIndex, IModelDelta.NO_CHANGE | IModelDelta.EXPAND, chosen.getStackFrames().length); |
| node = node.addNode(frame, stackFrameIndex, IModelDelta.NO_CHANGE | IModelDelta.SELECT, 0); |
| return delta; |
| } |
| } |
| } catch (DebugException e) { |
| } |
| } |
| return null; |
| } |
| |
| /** |
| * Computes the index of a launch at top level in the {@code Debug View} tree. |
| * |
| * @param launch The launch for which to compute the index. |
| * |
| * @return The index of the specified launch at top level in the |
| * {@code Debug View}. |
| */ |
| protected int getLaunchIndex(ILaunch launch) { |
| ILaunchManager manager = DebugPlugin.getDefault().getLaunchManager(); |
| return indexOf(manager.getLaunches(), launch); |
| } |
| |
| /** |
| * Computes the index of a debug target in its parent launch. The debug target |
| * index corresponds to the index in {@code Debug View} tree. |
| * |
| * @param target The debug target for which to compute the index. |
| * |
| * @return The index of the specified debug target in its launch. |
| */ |
| protected int getTargetIndex(IDebugTarget target) { |
| return indexOf(target.getLaunch().getChildren(), target); |
| } |
| |
| /** |
| * Computes the index of a stack frame in the thread suspended at that stack |
| * frame. The stack frame index corresponds to the index in {@code Debug View} |
| * tree. |
| * |
| * @param stackFrame The stack frame for which to compute the index. |
| * |
| * @return The index of the specified stack frame in its parent thread. |
| */ |
| protected int getStackFrameIndex(IStackFrame stackFrame) { |
| return 0; |
| } |
| } |