| /******************************************************************************* |
| * Copyright (c) 2009, 2011 IBM Corporation 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: |
| * IBM Corporation - initial API and implementation |
| *******************************************************************************/ |
| package org.eclipse.e4.core.internal.services; |
| |
| import org.eclipse.osgi.service.localization.BundleLocalization; |
| import org.osgi.framework.BundleActivator; |
| import org.osgi.framework.BundleContext; |
| import org.osgi.service.log.LogService; |
| import org.osgi.service.packageadmin.PackageAdmin; |
| import org.osgi.util.tracker.ServiceTracker; |
| |
| //there is no replacement for PackageAdmin#getBundles() |
| @SuppressWarnings("deprecation") |
| public class ServicesActivator implements BundleActivator { |
| |
| static private ServicesActivator defaultInstance; |
| private BundleContext bundleContext; |
| private ServiceTracker<PackageAdmin, PackageAdmin> pkgAdminTracker; |
| private ServiceTracker<LogService, LogService> logTracker; |
| private ServiceTracker<BundleLocalization, BundleLocalization> localizationTracker = null; |
| |
| public ServicesActivator() { |
| defaultInstance = this; |
| } |
| |
| public static ServicesActivator getDefault() { |
| return defaultInstance; |
| } |
| |
| @Override |
| public void start(BundleContext context) throws Exception { |
| bundleContext = context; |
| } |
| |
| @Override |
| public void stop(BundleContext context) throws Exception { |
| if (pkgAdminTracker != null) { |
| pkgAdminTracker.close(); |
| pkgAdminTracker = null; |
| } |
| if (localizationTracker != null) { |
| localizationTracker.close(); |
| localizationTracker = null; |
| } |
| if (logTracker != null) { |
| logTracker.close(); |
| logTracker = null; |
| } |
| bundleContext = null; |
| } |
| |
| public PackageAdmin getPackageAdmin() { |
| if (pkgAdminTracker == null) { |
| if (bundleContext == null) |
| return null; |
| pkgAdminTracker = new ServiceTracker<PackageAdmin, PackageAdmin>(bundleContext, |
| PackageAdmin.class, null); |
| pkgAdminTracker.open(); |
| } |
| return (PackageAdmin) pkgAdminTracker.getService(); |
| } |
| |
| public LogService getLogService() { |
| if (logTracker == null) { |
| if (bundleContext == null) |
| return null; |
| logTracker = new ServiceTracker<LogService, LogService>(bundleContext, |
| LogService.class, null); |
| logTracker.open(); |
| } |
| return logTracker.getService(); |
| } |
| |
| public BundleLocalization getLocalizationService() { |
| if (localizationTracker == null) { |
| if (bundleContext == null) |
| return null; |
| localizationTracker = new ServiceTracker<BundleLocalization, BundleLocalization>( |
| bundleContext, BundleLocalization.class, null); |
| localizationTracker.open(); |
| } |
| return localizationTracker.getService(); |
| } |
| } |