| /******************************************************************************* |
| * Copyright (c) 2000, 2015 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.jdt.internal.debug.ui.actions; |
| |
| import org.eclipse.core.runtime.IAdaptable; |
| import org.eclipse.debug.core.DebugEvent; |
| import org.eclipse.debug.core.DebugException; |
| import org.eclipse.debug.core.DebugPlugin; |
| import org.eclipse.debug.core.IDebugEventSetListener; |
| import org.eclipse.jdt.debug.core.IJavaThread; |
| import org.eclipse.jdt.debug.ui.IJavaDebugUIConstants; |
| import org.eclipse.jdt.internal.debug.ui.JDIDebugUIPlugin; |
| import org.eclipse.jface.viewers.Viewer; |
| import org.eclipse.ui.IViewPart; |
| |
| /** |
| * An action delegate that toggles the state of its viewer to |
| * show/hide System Threads. |
| */ |
| public class ShowSystemThreadsAction extends ViewFilterAction implements IDebugEventSetListener { |
| |
| /* (non-Javadoc) |
| * @see org.eclipse.jdt.internal.debug.ui.actions.ThreadFilterAction#getPreferenceKey() |
| */ |
| @Override |
| protected String getPreferenceKey() { |
| return IJavaDebugUIConstants.PREF_SHOW_SYSTEM_THREADS; |
| } |
| |
| /* (non-Javadoc) |
| * @see org.eclipse.jface.viewers.ViewerFilter#select(org.eclipse.jface.viewers.Viewer, java.lang.Object, java.lang.Object) |
| */ |
| @Override |
| public boolean select(Viewer viewer, Object parentElement, Object element) { |
| if (!getValue()) { |
| |
| IJavaThread thread = getJavaThread(element); |
| |
| if (thread != null) { |
| try { |
| // Show only non-system threads and suspended threads. |
| return !thread.isSystemThread() || thread.isSuspended(); |
| } catch (DebugException e) { |
| } |
| } |
| } |
| return true; |
| } |
| |
| private IJavaThread getJavaThread(Object element) { |
| IJavaThread thread = null; |
| |
| if (element instanceof IJavaThread) { |
| thread = (IJavaThread) element; |
| } else if (element instanceof IAdaptable) { |
| thread = ((IAdaptable)element).getAdapter(IJavaThread.class); |
| } |
| |
| return thread; |
| } |
| |
| /* (non-Javadoc) |
| * @see org.eclipse.ui.IViewActionDelegate#init(org.eclipse.ui.IViewPart) |
| */ |
| @Override |
| public void init(IViewPart view) { |
| super.init(view); |
| DebugPlugin.getDefault().addDebugEventListener(this); |
| } |
| /* (non-Javadoc) |
| * @see org.eclipse.ui.IActionDelegate2#dispose() |
| */ |
| @Override |
| public void dispose() { |
| super.dispose(); |
| DebugPlugin.getDefault().removeDebugEventListener(this); |
| } |
| |
| /* (non-Javadoc) |
| * @see org.eclipse.debug.core.IDebugEventSetListener#handleDebugEvents(org.eclipse.debug.core.DebugEvent[]) |
| */ |
| public void handleDebugEvents(DebugEvent[] events) { |
| if (getValue()) { |
| // if showing system threads, no need to worry about displaying/hiding |
| return; |
| } |
| for (int i = 0; i < events.length; i++) { |
| DebugEvent event = events[i]; |
| switch (event.getKind()) { |
| case DebugEvent.RESUME: |
| if (event.getDetail() == DebugEvent.CLIENT_REQUEST) { |
| // when a system thread resumes we need to refresh the viewer to re-filter it |
| refresh(event.getSource()); |
| } |
| break; |
| } |
| } |
| } |
| |
| private void refresh(Object source) { |
| final IJavaThread thread = getJavaThread(source); |
| if (thread != null) { |
| try { |
| if (thread.isSystemThread()) { |
| Runnable r = new Runnable() { |
| public void run() { |
| getStructuredViewer().refresh(); |
| } |
| }; |
| JDIDebugUIPlugin.getStandardDisplay().asyncExec(r); |
| return; |
| } |
| } catch (DebugException e) { |
| } |
| } |
| } |
| } |