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Java > Open Source Codes > nextapp > echo2 > app > button > DefaultToggleButtonModel


1 /*
2  * This file is part of the Echo Web Application Framework (hereinafter "Echo").
3  * Copyright (C) 2002-2005 NextApp, Inc.
4  *
5  * Version: MPL 1.1/GPL 2.0/LGPL 2.1
6  *
7  * The contents of this file are subject to the Mozilla Public License Version
8  * 1.1 (the "License"); you may not use this file except in compliance with
9  * the License. You may obtain a copy of the License at
10  * http://www.mozilla.org/MPL/
11  *
12  * Software distributed under the License is distributed on an "AS IS" basis,
13  * WITHOUT WARRANTY OF ANY KIND, either express or implied. See the License
14  * for the specific language governing rights and limitations under the
15  * License.
16  *
17  * Alternatively, the contents of this file may be used under the terms of
18  * either the GNU General Public License Version 2 or later (the "GPL"), or
19  * the GNU Lesser General Public License Version 2.1 or later (the "LGPL"),
20  * in which case the provisions of the GPL or the LGPL are applicable instead
21  * of those above. If you wish to allow use of your version of this file only
22  * under the terms of either the GPL or the LGPL, and not to allow others to
23  * use your version of this file under the terms of the MPL, indicate your
24  * decision by deleting the provisions above and replace them with the notice
25  * and other provisions required by the GPL or the LGPL. If you do not delete
26  * the provisions above, a recipient may use your version of this file under
27  * the terms of any one of the MPL, the GPL or the LGPL.
28  */
29
30 package nextapp.echo2.app.button;
31
32 import java.util.EventListener JavaDoc;
33
34 import nextapp.echo2.app.event.ChangeEvent;
35 import nextapp.echo2.app.event.ChangeListener;
36
37 /**
38  * Default <code>ToggleButtonModel</code> implementation.
39  */
40 public class DefaultToggleButtonModel extends DefaultButtonModel
41 implements ToggleButtonModel {
42
43     private boolean selected;
44
45     /**
46      * @see nextapp.echo2.app.button.ToggleButtonModel#addChangeListener(nextapp.echo2.app.event.ChangeListener)
47      */
48     public void addChangeListener(ChangeListener l) {
49         getEventListenerList().addListener(ChangeListener.class, l);
50     }
51     
52     /**
53      * Notifies all listeners that have registered for this event type.
54      */
55     public void fireStateChanged() {
56         EventListener JavaDoc[] listeners = getEventListenerList().getListeners(ChangeListener.class);
57         ChangeEvent e = new ChangeEvent(this);
58         for (int index = 0; index < listeners.length; ++index) {
59             ((ChangeListener) listeners[index]).stateChanged(e);
60         }
61     }
62
63     /**
64      * @see nextapp.echo2.app.button.ToggleButtonModel#isSelected()
65      */
66     public boolean isSelected() {
67         return selected;
68     }
69     
70     /**
71      * @see nextapp.echo2.app.button.ToggleButtonModel#removeChangeListener(nextapp.echo2.app.event.ChangeListener)
72      */
73     public void removeChangeListener(ChangeListener l) {
74         getEventListenerList().removeListener(ChangeListener.class, l);
75     }
76     
77     /**
78      * @see nextapp.echo2.app.button.ToggleButtonModel#setSelected(boolean)
79      */
80     public void setSelected(boolean selected) {
81         this.selected = selected;
82         fireStateChanged();
83     }
84 }
85
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