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Java > Open Source Codes > org > apache > tapestry > record > PropertyChange


1 // Copyright 2004, 2005 The Apache Software Foundation
2 //
3 // Licensed under the Apache License, Version 2.0 (the "License");
4 // you may not use this file except in compliance with the License.
5 // You may obtain a copy of the License at
6 //
7 // http://www.apache.org/licenses/LICENSE-2.0
8 //
9 // Unless required by applicable law or agreed to in writing, software
10 // distributed under the License is distributed on an "AS IS" BASIS,
11 // WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
12 // See the License for the specific language governing permissions and
13 // limitations under the License.
14
15 package org.apache.tapestry.record;
16
17 /**
18  * Represents a change to a component on a page, this represents a datum of information stored by a
19  * {@link org.apache.tapestry.engine.IPageRecorder}.
20  * <p>
21  * Renamed from IPageChange in release 4.0.
22  *
23  * @author Howard Lewis Ship
24  */
25
26 public interface PropertyChange
27 {
28     /**
29      * The path to the component on the page, or null if the property is a property of the page.
30      */
31
32     public String JavaDoc getComponentPath();
33
34     /**
35      * The new value for the property, which may be null.
36      */
37
38     public Object JavaDoc getNewValue();
39
40     /**
41      * The name of the property that changed.
42      */
43
44     public String JavaDoc getPropertyName();
45 }
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