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1
2
15 package org.wings;
16
17 import javax.swing.event.ChangeEvent  ;
18 import javax.swing.event.ChangeListener ;
19 import javax.swing.event.EventListenerList ;
20
21 public class SDefaultButtonModel
22 implements SButtonModel {
23 public static final Object [] EMPTY_OBJECT_ARRAY = new Object [0];
24
25 private boolean selected;
26 private EventListenerList listeners = null;
27
28 protected transient ChangeEvent changeEvent = null;
29
30 public boolean isSelected() {
31 return selected;
32 }
33
34 public void setSelected(boolean selected) {
35 if (this.selected == selected) {
36 return;
37 }
38 this.selected = selected;
39 fireStateChanged();
40 }
41
42 public Object [] getSelectedObjects() {
43 return new Object [0];
44 }
45
46 public void addChangeListener(ChangeListener listener) {
47 if (listeners == null)
48 listeners = new EventListenerList ();
49 listeners.add(ChangeListener .class, listener);
50 }
51
52 public void removeChangeListener(ChangeListener listener) {
53 if (listeners == null)
54 return;
55 listeners.remove(ChangeListener .class, listener);
56 }
57
58 public ChangeListener [] getChangeListeners() {
59 return (ChangeListener []) listeners.getListeners(ChangeListener .class);
60 }
61
62 protected final Object [] getListenerList() {
63 if (listeners == null) {
64 return EMPTY_OBJECT_ARRAY;
65 } else {
66 return listeners.getListenerList();
67 } }
69
70 protected void fireStateChanged() {
71 Object [] listeners = getListenerList();
72
73 for (int i = listeners.length - 2; i >= 0; i -= 2) {
74 if (listeners[i] == ChangeListener .class) {
75 if (changeEvent == null)
77 changeEvent = new ChangeEvent (this);
78 ((ChangeListener ) listeners[i + 1]).stateChanged(changeEvent);
79 }
80 }
81 }
82 }
83 |
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