| /****************************************************************************** |
| * Copyright (c) 2008 Oracle |
| * 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: |
| * Konstantin Komissarchik - initial implementation and ongoing maintenance |
| ******************************************************************************/ |
| |
| package org.eclipse.wst.common.project.facet.core.events.internal; |
| |
| import java.util.EnumMap; |
| import java.util.Map; |
| import java.util.Set; |
| import java.util.concurrent.CopyOnWriteArraySet; |
| |
| import org.eclipse.wst.common.project.facet.core.events.IFacetedProjectEvent; |
| import org.eclipse.wst.common.project.facet.core.events.IFacetedProjectListener; |
| import org.eclipse.wst.common.project.facet.core.internal.FacetCorePlugin; |
| |
| /** |
| * @author <a href="mailto:konstantin.komissarchik@oracle.com">Konstantin Komissarchik</a> |
| */ |
| |
| public final class ProjectListenerRegistry |
| { |
| private final Map<IFacetedProjectEvent.Type,Set<IFacetedProjectListener>> listeners; |
| |
| public ProjectListenerRegistry() |
| { |
| this.listeners |
| = new EnumMap<IFacetedProjectEvent.Type,Set<IFacetedProjectListener>>( IFacetedProjectEvent.Type.class ); |
| |
| for( IFacetedProjectEvent.Type t : IFacetedProjectEvent.Type.values() ) |
| { |
| this.listeners.put( t, new CopyOnWriteArraySet<IFacetedProjectListener>() ); |
| } |
| } |
| |
| public void addListener( final IFacetedProjectListener listener, |
| final IFacetedProjectEvent.Type... types ) |
| { |
| if( listener == null || types == null ) |
| { |
| throw new IllegalArgumentException(); |
| } |
| |
| for( IFacetedProjectEvent.Type type |
| : ( types.length > 0 ? types : IFacetedProjectEvent.Type.values() ) ) |
| { |
| this.listeners.get( type ).add( listener ); |
| } |
| } |
| |
| public void removeListener( final IFacetedProjectListener listener ) |
| { |
| if( listener == null ) |
| { |
| throw new IllegalArgumentException(); |
| } |
| |
| for( Set<IFacetedProjectListener> listeners : this.listeners.values() ) |
| { |
| listeners.remove( listener ); |
| } |
| } |
| |
| public void notifyListeners( final IFacetedProjectEvent event ) |
| { |
| for( IFacetedProjectListener listener : this.listeners.get( event.getType() ) ) |
| { |
| try |
| { |
| listener.handleEvent( event ); |
| } |
| catch( Exception e ) |
| { |
| FacetCorePlugin.log( e ); |
| } |
| } |
| } |
| |
| public Set<IFacetedProjectListener> getListeners( final IFacetedProjectEvent.Type eventType ) |
| { |
| return this.listeners.get( eventType ); |
| } |
| |
| } |