001    // Copyright 2004, 2005 The Apache Software Foundation
002    //
003    // Licensed under the Apache License, Version 2.0 (the "License");
004    // you may not use this file except in compliance with the License.
005    // You may obtain a copy of the License at
006    //
007    //     http://www.apache.org/licenses/LICENSE-2.0
008    //
009    // Unless required by applicable law or agreed to in writing, software
010    // distributed under the License is distributed on an "AS IS" BASIS,
011    // WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
012    // See the License for the specific language governing permissions and
013    // limitations under the License.
014    
015    package org.apache.tapestry.services.impl;
016    
017    import java.util.Iterator;
018    
019    import org.apache.hivemind.util.EventListenerList;
020    import org.apache.tapestry.event.ResetEventListener;
021    import org.apache.tapestry.services.ResetEventHub;
022    
023    /**
024     * Implementation of the <code>tapestry.ResetEventHub</code>
025     * service.
026     *
027     * @author Howard Lewis Ship
028     * @since 4.0
029     */
030    public class ResetEventHubImpl implements ResetEventHub
031    {
032        private EventListenerList _listeners = new EventListenerList();
033    
034        public void addResetEventListener(ResetEventListener l)
035        {
036            _listeners.addListener(l);
037        }
038    
039        public void removeResetEventListener(ResetEventListener l)
040        {
041            _listeners.removeListener(l);
042        }
043    
044        public void fireResetEvent()
045        {
046            Iterator i = _listeners.getListeners();
047    
048            while (i.hasNext())
049            {
050                ResetEventListener l = (ResetEventListener) i.next();
051    
052                l.resetEventDidOccur();
053            }
054        }
055    }