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/*******************************************************************************
* Copyright (c) 2009 Wind River Systems 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:
* Wind River Systems - initial API and implementation
*******************************************************************************/
package org.eclipse.cdt.p2.generator;
import org.eclipse.core.runtime.Plugin;
import org.osgi.framework.Bundle;
import org.osgi.framework.BundleContext;
import org.osgi.framework.ServiceReference;
import org.osgi.service.packageadmin.PackageAdmin;
/**
* The activator class controls the plug-in life cycle
*/
public class Activator extends Plugin {
// The plug-in ID
public static final String PLUGIN_ID = "org.eclipse.cdt.p2.generator";
// The shared instance
private static Activator plugin;
/**
* The constructor
*/
public Activator() {
}
/*
* (non-Javadoc)
* @see org.eclipse.core.runtime.Plugins#start(org.osgi.framework.BundleContext)
*/
public void start(BundleContext context) throws Exception {
super.start(context);
plugin = this;
}
/*
* (non-Javadoc)
* @see org.eclipse.core.runtime.Plugin#stop(org.osgi.framework.BundleContext)
*/
public void stop(BundleContext context) throws Exception {
plugin = null;
super.stop(context);
}
/**
* Returns the shared instance
*
* @return the shared instance
*/
public static Activator getDefault() {
return plugin;
}
@SuppressWarnings("unchecked")
public <T> T getService(Class<T> clazz) {
BundleContext context = plugin.getBundle().getBundleContext();
ServiceReference ref = context.getServiceReference(clazz.getName());
return (ref != null) ? (T)context.getService(ref) : null;
}
public Bundle getBundle(String symbolicName) {
PackageAdmin packageAdmin = getService(PackageAdmin.class);
if (packageAdmin == null)
return null;
Bundle[] bundles = packageAdmin.getBundles(symbolicName, null);
if (bundles == null)
return null;
//Return the first bundle that is not installed or uninstalled
for (int i = 0; i < bundles.length; i++) {
if ((bundles[i].getState() & (Bundle.INSTALLED | Bundle.UNINSTALLED)) == 0) {
return bundles[i];
}
}
return null;
}
}
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