01: /*
02: * Copyright 2004 The Apache Software Foundation.
03: *
04: * Licensed under the Apache License, Version 2.0 (the "License");
05: * you may not use this file except in compliance with the License.
06: * You may obtain a copy of the License at
07: *
08: * http://www.apache.org/licenses/LICENSE-2.0
09: *
10: * Unless required by applicable law or agreed to in writing, software
11: * distributed under the License is distributed on an "AS IS" BASIS,
12: * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
13: * See the License for the specific language governing permissions and
14: * limitations under the License.
15: */
16: package javax.faces.event;
17:
18: import javax.faces.component.UIComponent;
19:
20: /**
21: * see Javadoc of <a href="http://java.sun.com/javaee/javaserverfaces/1.2/docs/api/index.html">JSF Specification</a>
22: *
23: * @author Thomas Spiegl (latest modification by $Author: mbr $)
24: * @version $Revision: 512227 $ $Date: 2007-02-27 13:25:16 +0100 (Di, 27 Feb 2007) $
25: */
26: public class ValueChangeEvent extends FacesEvent {
27: private static final long serialVersionUID = -2490528664421353795L;
28: // FIELDS
29: private Object _oldValue;
30: private Object _newValue;
31:
32: // CONSTRUCTORS
33: public ValueChangeEvent(UIComponent uiComponent, Object oldValue,
34: Object newValue) {
35: super (uiComponent);
36: if (uiComponent == null)
37: throw new IllegalArgumentException("uiComponent");
38: _oldValue = oldValue;
39: _newValue = newValue;
40: }
41:
42: // METHODS
43: public Object getNewValue() {
44: return _newValue;
45: }
46:
47: public Object getOldValue() {
48: return _oldValue;
49: }
50:
51: public boolean isAppropriateListener(FacesListener facesListeners) {
52: return facesListeners instanceof ValueChangeListener;
53: }
54:
55: public void processListener(FacesListener facesListeners) {
56: ((ValueChangeListener) facesListeners).processValueChange(this);
57: }
58: }
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