| /* |
| * Copyright 1999-2004 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. |
| */ |
| package org.apache.cocoon.woody.event; |
| |
| import java.awt.AWTEventMulticaster; |
| import java.util.EventListener; |
| |
| /** |
| * Convenience class to handle all widget event listeners. See |
| * <code>java.awt.AWTEventMulticaster</code> for more information on its use. |
| * |
| * @author <a href="http://www.apache.org/~sylvain/">Sylvain Wallez</a> |
| * @version CVS $Id: WidgetEventMulticaster.java,v 1.2 2004/03/05 13:02:30 bdelacretaz Exp $ |
| */ |
| public class WidgetEventMulticaster extends AWTEventMulticaster implements |
| ActionListener, ValueChangedListener, ProcessingPhaseListener { |
| |
| protected WidgetEventMulticaster(EventListener a, EventListener b) { |
| super(a, b); |
| } |
| |
| public static ActionListener add(ActionListener a, ActionListener b) { |
| return (ActionListener)addInternal(a, b); |
| } |
| |
| public static ActionListener remove(ActionListener l, ActionListener oldl) { |
| return (ActionListener)removeInternal(l, oldl); |
| } |
| |
| public void actionPerformed(ActionEvent e) { |
| ((ActionListener)a).actionPerformed(e); |
| ((ActionListener)b).actionPerformed(e); |
| } |
| |
| public static ValueChangedListener add(ValueChangedListener a, ValueChangedListener b) { |
| return (ValueChangedListener)addInternal(a, b); |
| } |
| |
| public static ValueChangedListener remove(ValueChangedListener l, ValueChangedListener oldl) { |
| return (ValueChangedListener)removeInternal(l, oldl); |
| } |
| |
| public void phaseEnded(ProcessingPhaseEvent e) { |
| ((ProcessingPhaseListener)a).phaseEnded(e); |
| ((ProcessingPhaseListener)b).phaseEnded(e); |
| } |
| |
| public static ProcessingPhaseListener add(ProcessingPhaseListener a, ProcessingPhaseListener b) { |
| return (ProcessingPhaseListener)addInternal(a, b); |
| } |
| |
| public static ProcessingPhaseListener remove(ProcessingPhaseListener l, ProcessingPhaseListener oldl) { |
| return (ProcessingPhaseListener)removeInternal(l, oldl); |
| } |
| |
| public void valueChanged(ValueChangedEvent e) { |
| ((ValueChangedListener)a).valueChanged(e); |
| ((ValueChangedListener)b).valueChanged(e); |
| } |
| |
| /** |
| * Can't use the superclass method since it creates an AWTEventMulticaster |
| */ |
| protected static EventListener addInternal(EventListener a, EventListener b) { |
| if (a == null) return b; |
| if (b == null) return a; |
| return new WidgetEventMulticaster(a, b); |
| } |
| } |