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1
7
8 package org.jdesktop.swing;
9
10 import java.awt.Color  ;
11 import java.awt.Component ;
12
13 import java.awt.event.ActionEvent ;
14 import java.awt.event.ActionListener ;
15
16 import java.util.ArrayList ;
17
18 import javax.swing.AbstractButton ;
19 import javax.swing.BoxLayout ;
20 import javax.swing.ButtonGroup ;
21 import javax.swing.ButtonModel ;
22 import javax.swing.JPanel ;
23 import javax.swing.JRadioButton ;
24
25
29
30 public class JXRadioGroup extends JPanel {
31 private ButtonGroup buttonGroup;
32 private ArrayList values = new ArrayList ();
33 private ActionListener actionHandler;
34 private ArrayList actionListeners;
35
36 public JXRadioGroup() {
37 setLayout(new BoxLayout (this, BoxLayout.X_AXIS));
38 buttonGroup = new ButtonGroup ();
39 }
40
41 public JXRadioGroup(Object radioValues[]) {
42 this();
43 for(int i = 0; i < radioValues.length; i++) {
44 add(radioValues[i]);
45 }
46 }
47
48 public void add(Object radioValue) {
49 values.add(radioValue);
50 addButton(new JRadioButton (radioValue.toString()));
51 }
52
53 public void add(AbstractButton button) {
54 values.add(button.getText());
55 addButton(button);
56 }
57
58 private void addButton(AbstractButton button) {
59 buttonGroup.add(button);
60 super.add(button);
61 if (actionHandler == null) {
62 actionHandler = new ActionListener () {
63 public void actionPerformed(ActionEvent e) {
64 fireActionEvent(e);
65 }
66 };
67 }
68 button.addActionListener(actionHandler);
69 }
70
71 public AbstractButton getSelectedButton() {
72 ButtonModel selectedModel = buttonGroup.getSelection();
73 Component children[] = getComponents();
74 for(int i = 0; i < children.length; i++) {
75 AbstractButton button = (AbstractButton )children[i];
76 if (button.getModel() == selectedModel) {
77 return button;
78 }
79 }
80 return null;
81 }
82
83 private int getSelectedIndex() {
84 ButtonModel selectedModel = buttonGroup.getSelection();
85 Component children[] = getComponents();
86 for (int i = 0; i < children.length; i++) {
87 AbstractButton button = (AbstractButton ) children[i];
88 if (button.getModel() == selectedModel) {
89 return i;
90 }
91 }
92 return -1;
93 }
94
95 public Object getSelectedValue() {
96 int index = getSelectedIndex();
97 return values.get(index);
98 }
99
100 public void setSelectedValue(Object value) {
101 int index = values.indexOf(value);
102 AbstractButton button = (AbstractButton )getComponent(index);
103 button.setSelected(true);
104 }
105
106 public void addActionListener(ActionListener l) {
107 if (actionListeners == null) {
108 actionListeners = new ArrayList ();
109 }
110 actionListeners.add(l);
111 }
112
113 public void removeActionListener(ActionListener l) {
114 if (actionListeners != null) {
115 actionListeners.remove(l);
116 }
117 }
118
119 public ActionListener [] getActionListeners() {
120 if (actionListeners != null) {
121 return (ActionListener [])actionListeners.toArray(new ActionListener [0]);
122 }
123 return new ActionListener [0];
124 }
125
126 protected void fireActionEvent(ActionEvent e) {
127 if (actionListeners != null) {
128 for (int i = 0; i < actionListeners.size(); i++) {
129 ActionListener l = (ActionListener ) actionListeners.get(i);
130 l.actionPerformed(e);
131 }
132 }
133 }
134 } |
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