package org.codehaus.mojo.pomtools.console.toolkit.event;
/*
* Copyright 2005-2006 The Apache Software Foundation.
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
import java.util.Iterator;
import java.util.LinkedList;
import java.util.List;
import org.codehaus.mojo.pomtools.console.toolkit.ConsoleEvent;
import org.codehaus.mojo.pomtools.console.toolkit.ConsoleExecutionException;
/**
*
* @author <a href="mailto:dhawkins@codehaus.org">David Hawkins</a>
* @version $Id$
*/
public class ConsoleEventDispatcher
{
private LinkedList listeners = new LinkedList();
public ConsoleEventDispatcher()
{
}
public ConsoleEventDispatcher add( ConsoleEventListener listener )
{
listener.validateConfiguration( this );
listeners.add( listener );
return this;
}
public ConsoleEventDispatcher addFirst( ConsoleEventListener listener )
{
listener.validateConfiguration( this );
listeners.addFirst( listener );
return this;
}
public void dispatchEvent( ConsoleEvent event )
throws ConsoleExecutionException
{
for ( Iterator i = listeners.iterator(); i.hasNext() && !event.isConsumed(); )
{
ConsoleEventListener c = (ConsoleEventListener) i.next();
if ( c.accept( event ) )
{
event.consume();
c.processEvent( event );
}
}
}
public List getListeners()
{
return listeners;
}
}