| /******************************************************************************* |
| * Copyright (c) 2013, Google Inc. 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: |
| * Google Inc - initial API and implementation |
| *******************************************************************************/ |
| package org.eclipse.swt.examples.watchdog; |
| |
| import org.eclipse.swt.SWT; |
| import org.eclipse.swt.widgets.Display; |
| import org.eclipse.ui.IStartup; |
| import org.eclipse.ui.IWorkbench; |
| import org.eclipse.ui.plugin.AbstractUIPlugin; |
| import org.osgi.framework.BundleContext; |
| |
| public class WatchdogPlugin extends AbstractUIPlugin implements IStartup { |
| private static final int EVENT_DURATION_THRESHOLD = 1001; |
| |
| private static WatchdogPlugin plugin; |
| private final Display display; |
| private final TimedEventWatchdog watchdog; |
| |
| public WatchdogPlugin() { |
| super(); |
| plugin = this; |
| |
| IWorkbench workbench = getWorkbench(); |
| display = (workbench != null) ? workbench.getDisplay() : null; |
| |
| Thread displayThread = (display != null) ? display.getThread() : null; |
| this.watchdog = displayThread != null |
| ? new TimedEventWatchdog(displayThread, EVENT_DURATION_THRESHOLD) |
| : null; |
| } |
| |
| @Override |
| public void earlyStartup() { |
| if (display != null) { |
| display.asyncExec(new Runnable() { |
| @Override |
| public void run() { |
| display.addListener(SWT.PreEvent, watchdog); |
| display.addListener(SWT.PostEvent, watchdog); |
| } |
| }); |
| } |
| } |
| |
| @Override |
| public void stop(BundleContext context) throws Exception { |
| try { |
| if (display != null && !display.isDisposed()) { |
| display.asyncExec(new Runnable() { |
| @Override |
| public void run() { |
| if (!display.isDisposed()) { |
| display.removeListener(SWT.PreEvent, watchdog); |
| display.removeListener(SWT.PostEvent, watchdog); |
| } |
| } |
| }); |
| } |
| } finally { |
| super.stop(context); |
| } |
| } |
| |
| public static WatchdogPlugin getDefault() { |
| return plugin; |
| } |
| } |