/*****************************************************************************
* Copyright (c) 2006, 2007 g-Eclipse Consortium
* 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
*
* Initial development of the original code was made for the
* g-Eclipse project founded by European Union
* project number: FP6-IST-034327 http://www.geclipse.eu/
*
* Contributors:
* Mathias Stuempert - initial API and implementation
*****************************************************************************/
package eu.geclipse.core.internal.model.notify;
import org.eclipse.core.resources.IResourceChangeEvent;
import org.eclipse.core.resources.IResourceChangeListener;
import org.eclipse.core.resources.IResourceDelta;
import org.eclipse.core.resources.ResourcesPlugin;
import org.eclipse.core.runtime.CoreException;
import eu.geclipse.core.internal.Activator;
import eu.geclipse.core.internal.model.GridRoot;
import eu.geclipse.core.model.GridModel;
/**
* This class tracks changes in the Eclipse resource tree and
* processes them using the {@link GridElementLifecycleManager}.
*/
public class ResourceNotificationService
implements IResourceChangeListener {
private static ResourceNotificationService instance;
private ResourceNotificationService() {
ResourcesPlugin.getWorkspace().addResourceChangeListener( this );
}
/**
* Get the singleton of this class.
*
* @return The singleton instance.
*/
public static ResourceNotificationService getInstance() {
if ( instance == null ) {
instance = new ResourceNotificationService();
}
return instance;
}
public void resourceChanged( final IResourceChangeEvent event ) {
IResourceDelta delta = event.getDelta();
if ( delta != null ) {
GridNotificationService gridNotificationService
= GridRoot.getGridNotificationService();
gridNotificationService.lock( GridModel.getRoot() );
GridElementLifecycleManager visitor = new GridElementLifecycleManager();
try {
delta.accept( visitor );
} catch ( CoreException cExc ) {
Activator.logException( cExc );
}
gridNotificationService.unlock( GridModel.getRoot() );
}
}
}