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/*****************************************************************************
* Copyright (c) 2008, 2016 CEA LIST, Christian W. Damus, and others.
*
* All rights reserved. This program and the accompanying materials
* are made available under the terms of the Eclipse Public License 2.0
* which accompanies this distribution, and is available at
* https://www.eclipse.org/legal/epl-2.0/
*
* SPDX-License-Identifier: EPL-2.0
*
* Contributors:
* Cedric Dumoulin Cedric.dumoulin@lifl.fr - Initial API and implementation
* Christian W. Damus - bug 485220
*
*****************************************************************************/
package org.eclipse.papyrus.infra.core;
import org.eclipse.core.runtime.Plugin;
import org.eclipse.papyrus.infra.core.log.LogHelper;
import org.eclipse.papyrus.infra.core.services.spi.IContextualServiceRegistryTracker;
import org.osgi.framework.BundleContext;
import org.osgi.util.tracker.ServiceTracker;
/**
* 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.papyrus.infra.core";
// The shared instance
private static Activator plugin;
/** Logging helper */
public static LogHelper log;
private ServiceTracker<IContextualServiceRegistryTracker, IContextualServiceRegistryTracker> serviceRegistryTrackerTracker;
/**
* The constructor
*/
public Activator() {
}
@Override
public void start(BundleContext context) throws Exception {
super.start(context);
plugin = this;
// register the log helper
log = new LogHelper(this);
serviceRegistryTrackerTracker = new ServiceTracker<>(context, IContextualServiceRegistryTracker.class, null);
serviceRegistryTrackerTracker.open();
}
@Override
public void stop(BundleContext context) throws Exception {
serviceRegistryTrackerTracker.close();
serviceRegistryTrackerTracker = null;
plugin = null;
log = null;
super.stop(context);
}
/**
* Returns the shared instance
*
* @return the shared instance
*/
public static Activator getDefault() {
return plugin;
}
/**
* Obtain the instance of the contextual service-registry tracker service, if any.
*
* @return the service-registry tracker service, or {@code null} if none (probably
* because there is no UI and, therefore, no user to be editing any Papyrus models)
* @since 2.0
*/
public IContextualServiceRegistryTracker getContextualServiceRegistryTracker() {
return serviceRegistryTrackerTracker.getService();
}
}
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