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: bommel $)
27 * @version $Revision: 1187700 $ $Date: 2011-10-22 07:19:37 -0500 (Sat, 22 Oct 2011) $
28 */
29 public class ValueChangeEvent extends FacesEvent
30 {
31 private static final long serialVersionUID = -2490528664421353795L;
32 // FIELDS
33 private Object _oldValue;
34 private Object _newValue;
35
36 // CONSTRUCTORS
37 public ValueChangeEvent(UIComponent uiComponent, Object oldValue, Object newValue)
38 {
39 super(uiComponent);
40 if (uiComponent == null)
41 throw new IllegalArgumentException("uiComponent");
42 _oldValue = oldValue;
43 _newValue = newValue;
44 }
45
46 // METHODS
47 public Object getNewValue()
48 {
49 return _newValue;
50 }
51
52 public Object getOldValue()
53 {
54 return _oldValue;
55 }
56
57 @Override
58 public boolean isAppropriateListener(FacesListener facesListeners)
59 {
60 return facesListeners instanceof ValueChangeListener;
61 }
62
63 @Override
64 public void processListener(FacesListener facesListeners)
65 {
66 ((ValueChangeListener)facesListeners).processValueChange(this);
67 }
68 }