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/*******************************************************************************
* 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;
}
}
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