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 org.apache.myfaces.custom.tree.event;
20
21 import javax.faces.event.FacesEvent;
22 import javax.faces.event.FacesListener;
23 import javax.faces.component.UIComponent;
24
25 import org.apache.myfaces.custom.tree.model.TreePath;
26
27
28 /**
29 * Event fired by {@link org.apache.myfaces.custom.tree.HtmlTree} on selection changes.
30 *
31 * @author <a href="mailto:oliver@rossmueller.com">Oliver Rossmueller</a>
32 * @version $Revision: 472638 $ $Date: 2006-11-08 15:54:13 -0500 (Wed, 08 Nov 2006) $
33 */
34 public class TreeSelectionEvent extends FacesEvent
35 {
36 private static final long serialVersionUID = -361206105634892091L;
37 private TreePath oldSelectionPath;
38 private TreePath newSelectionPath;
39
40
41 /**
42 * Construct an event.
43 *
44 * @param uiComponent event source
45 * @param oldSelectionPath path of the old selection, null if no node was selected before
46 * @param newSelectionPath path of the current selection
47 */
48 public TreeSelectionEvent(UIComponent uiComponent, TreePath oldSelectionPath, TreePath newSelectionPath)
49 {
50 super(uiComponent);
51 this.oldSelectionPath = oldSelectionPath;
52 this.newSelectionPath = newSelectionPath;
53 }
54
55
56 /**
57 * Answer the path of the old selection.
58 *
59 * @return path of previous (old) selection, null if no node was selected before
60 */
61 public TreePath getOldSelectionPath()
62 {
63 return oldSelectionPath;
64 }
65
66
67 /**
68 * Answer the path of the current (new) selection.
69 *
70 * @return path of the new selected node
71 */
72 public TreePath getNewSelectionPath()
73 {
74 return newSelectionPath;
75 }
76
77
78 public boolean isAppropriateListener(FacesListener faceslistener)
79 {
80 return faceslistener instanceof TreeSelectionListener;
81 }
82
83
84 public void processListener(FacesListener faceslistener)
85 {
86 ((TreeSelectionListener) faceslistener).valueChanged(this);
87 }
88 }