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/****************************************************************************
* Copyright (c) 2007 Remy Suen, Composent, 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:
* Remy Suen <remy.suen@gmail.com> - initial API and implementation
*****************************************************************************/
package org.eclipse.ecf.internal.discovery.ui;
import org.eclipse.core.runtime.IExtensionRegistry;
import org.eclipse.ecf.core.IContainerManager;
import org.eclipse.jface.resource.ImageRegistry;
import org.eclipse.swt.graphics.Image;
import org.eclipse.ui.plugin.AbstractUIPlugin;
import org.osgi.framework.BundleContext;
import org.osgi.util.tracker.ServiceTracker;
/**
* The activator class controls the plug-in life cycle
*/
public class Activator extends AbstractUIPlugin {
// The plug-in ID
public static final String PLUGIN_ID = "org.eclipse.ecf.discovery.ui"; //$NON-NLS-1$
// The shared instance
private static Activator plugin;
private BundleContext context;
private ServiceTracker extensionRegistryTracker = null;
private ServiceTracker containerManagerTracker;
/**
* The constructor
*/
public Activator() {
// nothing
}
public IContainerManager getContainerManager() {
if (containerManagerTracker == null) {
containerManagerTracker = new ServiceTracker(context, IContainerManager.class.getName(), null);
containerManagerTracker.open();
}
return (IContainerManager) containerManagerTracker.getService();
}
/*
* (non-Javadoc)
* @see org.eclipse.ui.plugin.AbstractUIPlugin#start(org.osgi.framework.BundleContext)
*/
public void start(BundleContext context1) throws Exception {
super.start(context1);
plugin = this;
this.context = context1;
ImageRegistry imageRegistry = getImageRegistry();
imageRegistry.put("serviceIcon", imageDescriptorFromPlugin(PLUGIN_ID, "icons/default_provider_image.gif").createImage()); //$NON-NLS-1$ //$NON-NLS-2$
}
public Image getServiceImage() {
return getImageRegistry().get("serviceIcon"); //$NON-NLS-1$
}
public IExtensionRegistry getExtensionRegistry() {
if (extensionRegistryTracker == null) {
this.extensionRegistryTracker = new ServiceTracker(context, IExtensionRegistry.class.getName(), null);
this.extensionRegistryTracker.open();
}
return (IExtensionRegistry) extensionRegistryTracker.getService();
}
/*
* (non-Javadoc)
* @see org.eclipse.ui.plugin.AbstractUIPlugin#stop(org.osgi.framework.BundleContext)
*/
public void stop(BundleContext context1) throws Exception {
super.stop(context1);
if (extensionRegistryTracker != null) {
extensionRegistryTracker.close();
extensionRegistryTracker = null;
}
if (containerManagerTracker != null) {
containerManagerTracker.close();
containerManagerTracker = null;
}
plugin = null;
this.context = null;
}
public static BundleContext getContext() {
return getDefault().context;
}
/**
* Returns the shared instance
*
* @return the shared instance
*/
public static Activator getDefault() {
return plugin;
}
}
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