1 /*
2 * Licensed to the Apache Software Foundation (ASF) under one
3 * or more contributor license agreements. See the NOTICE file
4 * distributed with this work for additional information
5 * regarding copyright ownership. The ASF licenses this file
6 * to you under the Apache License, Version 2.0 (the
7 * "License"); you may not use this file except in compliance
8 * with the License. You may obtain a copy of the License at
9 *
10 * http://www.apache.org/licenses/LICENSE-2.0
11 *
12 * Unless required by applicable law or agreed to in writing,
13 * software distributed under the License is distributed on an
14 * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
15 * KIND, either express or implied. See the License for the
16 * specific language governing permissions and limitations
17 * under the License.
18 */
19 package javax.faces.event;
20
21 import javax.faces.component.UIComponent;
22
23 /**
24 * see Javadoc of <a href="http://java.sun.com/javaee/javaserverfaces/1.2/docs/api/index.html">JSF Specification</a>
25 *
26 * @author Thomas Spiegl (latest modification by $Author: skitching $)
27 * @version $Revision: 676298 $ $Date: 2008-07-13 05:31:48 -0500 (Sun, 13 Jul 2008) $
28 */
29 public class ValueChangeEvent extends FacesEvent {
30 private static final long serialVersionUID = -2490528664421353795L;
31 // FIELDS
32 private Object _oldValue;
33 private Object _newValue;
34
35 // CONSTRUCTORS
36 public ValueChangeEvent(UIComponent uiComponent, Object oldValue, Object newValue)
37 {
38 super(uiComponent);
39 if (uiComponent == null) throw new IllegalArgumentException("uiComponent");
40 _oldValue = oldValue;
41 _newValue = newValue;
42 }
43
44 // METHODS
45 public Object getNewValue()
46 {
47 return _newValue;
48 }
49
50 public Object getOldValue()
51 {
52 return _oldValue;
53 }
54
55 public boolean isAppropriateListener(FacesListener facesListeners)
56 {
57 return facesListeners instanceof ValueChangeListener;
58 }
59
60 public void processListener(FacesListener facesListeners)
61 {
62 ((ValueChangeListener)facesListeners).processValueChange(this);
63 }
64 }