| /****************************************************************************** |
| * 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.runtime.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.internal.FacetCorePlugin; |
| import org.eclipse.wst.common.project.facet.core.runtime.events.IRuntimeLifecycleEvent; |
| import org.eclipse.wst.common.project.facet.core.runtime.events.IRuntimeLifecycleListener; |
| |
| /** |
| * @author <a href="mailto:konstantin.komissarchik@oracle.com">Konstantin Komissarchik</a> |
| */ |
| |
| public final class RuntimeLifecycleListenerRegistry |
| { |
| private final Map<IRuntimeLifecycleEvent.Type,Set<IRuntimeLifecycleListener>> listeners; |
| |
| public RuntimeLifecycleListenerRegistry() |
| { |
| this.listeners |
| = new EnumMap<IRuntimeLifecycleEvent.Type,Set<IRuntimeLifecycleListener>>( IRuntimeLifecycleEvent.Type.class ); |
| |
| for( IRuntimeLifecycleEvent.Type t : IRuntimeLifecycleEvent.Type.values() ) |
| { |
| this.listeners.put( t, new CopyOnWriteArraySet<IRuntimeLifecycleListener>() ); |
| } |
| } |
| |
| public void addListener( final IRuntimeLifecycleListener listener, |
| final IRuntimeLifecycleEvent.Type... types ) |
| { |
| if( listener == null || types == null ) |
| { |
| throw new IllegalArgumentException(); |
| } |
| |
| for( IRuntimeLifecycleEvent.Type type |
| : ( types.length > 0 ? types : IRuntimeLifecycleEvent.Type.values() ) ) |
| { |
| this.listeners.get( type ).add( listener ); |
| } |
| } |
| |
| public void removeListener( final IRuntimeLifecycleListener listener ) |
| { |
| if( listener == null ) |
| { |
| throw new IllegalArgumentException(); |
| } |
| |
| for( Set<IRuntimeLifecycleListener> listeners : this.listeners.values() ) |
| { |
| listeners.remove( listener ); |
| } |
| } |
| |
| public void notifyListeners( final IRuntimeLifecycleEvent event ) |
| { |
| for( IRuntimeLifecycleListener listener : this.listeners.get( event.getType() ) ) |
| { |
| try |
| { |
| listener.handleEvent( event ); |
| } |
| catch( Exception e ) |
| { |
| FacetCorePlugin.log( e ); |
| } |
| } |
| } |
| |
| public Set<IRuntimeLifecycleListener> getListeners( final IRuntimeLifecycleEvent.Type eventType ) |
| { |
| return this.listeners.get( eventType ); |
| } |
| |
| public boolean isEmpty() |
| { |
| for( Set<IRuntimeLifecycleListener> listeners : this.listeners.values() ) |
| { |
| if( ! listeners.isEmpty() ) |
| { |
| return false; |
| } |
| } |
| |
| return true; |
| } |
| |
| } |