|
// Example from http://www.crionics.com/products/opensource/faq/swing_ex/SwingExamples.html
/* (swing1.1.1) */
import java.awt.Component;
import java.awt.event.ItemEvent;
import java.awt.event.ItemListener;
import java.awt.event.WindowAdapter;
import java.awt.event.WindowEvent;
import javax.swing.BoxLayout;
import javax.swing.ButtonGroup;
import javax.swing.DefaultCellEditor;
import javax.swing.JCheckBox;
import javax.swing.JFrame;
import javax.swing.JPanel;
import javax.swing.JRadioButton;
import javax.swing.JScrollPane;
import javax.swing.JTable;
import javax.swing.UIManager;
import javax.swing.table.DefaultTableModel;
import javax.swing.table.TableCellRenderer;
/**
* @version 1.2 08/13/99
*/
public class JRadioButtonTableExample2 extends JFrame {
public JRadioButtonTableExample2() {
super("JRadioButtonTable Example");
DefaultTableModel dm = new DefaultTableModel();
dm.setDataVector(new Object[][] { { "1", new Integer(-1) },
{ "2", new Integer(-1) }, { "3", new Integer(0) },
{ "4", new Integer(1) }, { "5", new Integer(2) } },
new Object[] { "Question", "Answer" });
JTable table = new JTable(dm);
String[] answer = { "A", "B", "C" };
table.getColumn("Answer").setCellRenderer(
new RadioButtonRenderer(answer));
table.getColumn("Answer").setCellEditor(
new RadioButtonEditor(new JCheckBox(), new RadioButtonPanel(
answer)));
JScrollPane scroll = new JScrollPane(table);
getContentPane().add(scroll);
}
// Cell base
class RadioButtonPanel extends JPanel {
JRadioButton[] buttons;
RadioButtonPanel(String[] str) {
setLayout(new BoxLayout(this, BoxLayout.X_AXIS));
buttons = new JRadioButton[str.length];
for (int i = 0; i < buttons.length; i++) {
buttons[i] = new JRadioButton(str[i]);
buttons[i].setFocusPainted(false);
add(buttons[i]);
}
}
public void setSelectedIndex(int index) {
for (int i = 0; i < buttons.length; i++) {
buttons[i].setSelected(i == index);
}
}
public int getSelectedIndex() {
for (int i = 0; i < buttons.length; i++) {
if (buttons[i].isSelected()) {
return i;
}
}
return -1;
}
public JRadioButton[] getButtons() {
return buttons;
}
}
class RadioButtonRenderer extends RadioButtonPanel implements
TableCellRenderer {
RadioButtonRenderer(String[] strs) {
super(strs);
}
public Component getTableCellRendererComponent(JTable table,
Object value, boolean isSelected, boolean hasFocus, int row,
int column) {
if (value instanceof Integer) {
setSelectedIndex(((Integer) value).intValue());
}
return this;
}
}
class RadioButtonEditor extends DefaultCellEditor implements ItemListener {
RadioButtonPanel panel;
public RadioButtonEditor(JCheckBox checkBox, RadioButtonPanel panel) {
super(checkBox);
this.panel = panel;
ButtonGroup buttonGroup = new ButtonGroup();
JRadioButton[] buttons = panel.getButtons();
for (int i = 0; i < buttons.length; i++) {
buttonGroup.add(buttons[i]);
buttons[i].addItemListener(this);
}
}
public Component getTableCellEditorComponent(JTable table,
Object value, boolean isSelected, int row, int column) {
if (value instanceof Integer) {
panel.setSelectedIndex(((Integer) value).intValue());
}
return panel;
}
public Object getCellEditorValue() {
return new Integer(panel.getSelectedIndex());
}
public void itemStateChanged(ItemEvent e) {
super.fireEditingStopped();
}
}
public static void main(String[] args) {
JRadioButtonTableExample2 frame = new JRadioButtonTableExample2();
frame.addWindowListener(new WindowAdapter() {
public void windowClosing(WindowEvent e) {
System.exit(0);
}
});
frame.setSize(230, 140);
frame.setVisible(true);
}
}
|
