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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  
20  package org.apache.myfaces.tobago.event;
21  
22  import javax.faces.component.UIComponent;
23  import javax.faces.event.FacesEvent;
24  import javax.faces.event.FacesListener;
25  
26  public class TreeExpansionEvent extends FacesEvent {
27  
28    private static final long serialVersionUID = 422186716954088729L;
29  
30    private boolean oldExpanded;
31    private boolean newExpanded;
32  
33    public TreeExpansionEvent(UIComponent node, boolean oldExpanded, boolean newExpanded) {
34      super(node);
35      this.oldExpanded = oldExpanded;
36      this.newExpanded = newExpanded;
37    }
38  
39    public boolean isAppropriateListener(FacesListener facesListener) {
40      return facesListener instanceof TreeExpansionListener;
41    }
42  
43    public void processListener(FacesListener facesListener) {
44      if (facesListener instanceof TreeExpansionListener) {
45        if (oldExpanded && !newExpanded) {
46     //todo     ((TreeExpansionListener) facesListener).treeCollapsed(this);
47          ((TreeExpansionListener) facesListener).treeExpanded(this);
48        } else if (!oldExpanded && newExpanded) {
49          ((TreeExpansionListener) facesListener).treeExpanded(this);
50        } else {
51          // nothing to do
52        }
53      }
54    }
55  
56    public boolean isOldExpanded() {
57      return oldExpanded;
58    }
59  
60    public boolean isNewExpanded() {
61      return newExpanded;
62    }
63  
64    @Override
65    public String toString() {
66      return new StringBuilder()
67          .append(super.toString())
68          .append("expanded=")
69          .append(newExpanded)
70          .toString();
71    }
72  }