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package org.eclipse.equinox.p2.examples.rcp.prestartupdate;
import org.eclipse.jface.resource.ImageDescriptor;
import org.eclipse.ui.plugin.AbstractUIPlugin;
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 AbstractUIPlugin {
// The plug-in ID
public static final String PLUGIN_ID = "org.eclipse.equinox.p2.examples.rcp.prestartupdate";
// The shared instance
private static Activator plugin;
// XXX Shared instance of bundle context
static BundleContext bundleContext;
// XXX services for starting bundles
private static PackageAdmin packageAdmin = null;
private static ServiceReference packageAdminRef = null;
/**
* The constructor
*/
public Activator() {
}
/*
* (non-Javadoc)
* @see org.eclipse.ui.plugin.AbstractUIPlugin#start(org.osgi.framework.BundleContext)
*/
public void start(BundleContext context) throws Exception {
super.start(context);
plugin = this;
bundleContext = context;
packageAdminRef = bundleContext.getServiceReference(PackageAdmin.class.getName());
packageAdmin = (PackageAdmin) bundleContext.getService(packageAdminRef);
}
private static Bundle getBundle(String symbolicName) {
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;
}
/*
* (non-Javadoc)
* @see org.eclipse.ui.plugin.AbstractUIPlugin#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;
}
/**
* Returns an image descriptor for the image file at the given
* plug-in relative path
*
* @param path the path
* @return the image descriptor
*/
public static ImageDescriptor getImageDescriptor(String path) {
return imageDescriptorFromPlugin(PLUGIN_ID, path);
}
}
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