Posted by terai at 2009-12-21
JTableのセル中にJRadioButtonを配置
JTableのセル中に複数のJRadioButtonを配置します。JTableExamples2を元に修正を行っています。
サンプルコード
class RadioButtonPanel extends JPanel {
public final JRadioButton[] buttons;
public final ButtonGroup bg = new ButtonGroup();
RadioButtonPanel(String[] answer) {
super();
setLayout(new BoxLayout(this, BoxLayout.X_AXIS));
buttons = new JRadioButton[answer.length];
for (int i = 0; i < buttons.length; i++) {
buttons[i] = new JRadioButton(answer[i]);
buttons[i].setActionCommand(answer[i]);
buttons[i].setEnabled(true);
add(buttons[i]);
bg.add(buttons[i]);
}
}
}
class RadioButtonEditorRenderer extends AbstractCellEditor
implements TableCellRenderer, TableCellEditor{
private final String[] answer = { "A", "B", "C" };
private final RadioButtonPanel editor;
private final RadioButtonPanel renderer;
public RadioButtonEditorRenderer() {
super();
this.editor = new RadioButtonPanel(answer);
this.renderer = new RadioButtonPanel(answer);
}
private void setSelectedButton(RadioButtonPanel p, Object v) {
if("A".equals(v)) {
p.buttons[0].setSelected(true);
}else if("B".equals(v)) {
p.buttons[1].setSelected(true);
}else{
p.buttons[2].setSelected(true);
}
}
@Override public Component getTableCellRendererComponent(
JTable table, Object value, boolean isSelected,
boolean hasFocus, int row, int column) {
setSelectedButton(renderer, value);
return renderer;
}
@Override public Component getTableCellEditorComponent(
JTable table, Object value, boolean isSelected, int row, int column) {
setSelectedButton(editor, value);
return editor;
}
@Override public Object getCellEditorValue() {
return editor.bg.getSelection().getActionCommand();
}
}
解説
上記のサンプルでは、JRadioButtonを3つ配置したJPanelを、CellRenderer、CellEditor用に二つ用意しています。実際にどのJRadioButtonがクリックされたかなどは、以下のように、JTableに追加したMouseListenerで処理するようになっています。
table.addMouseListener(new MouseAdapter() {
@Override public void mouseReleased(MouseEvent e) {
JTable t = (JTable)e.getComponent();
Point pt = e.getPoint();
int row = t.rowAtPoint(pt);
int col = t.columnAtPoint(pt);
if(t.convertRowIndexToModel(row)>=0 && t.convertColumnIndexToModel(col)==1) {
TableCellEditor ce = t.getCellEditor(row, col);
//http://tips4java.wordpress.com/2009/07/12/table-button-column/
ce.stopCellEditing();
Component c = ce.getTableCellEditorComponent(t, null, true, row, col);
Point p = SwingUtilities.convertPoint(t, pt, c);
Component b = SwingUtilities.getDeepestComponentAt(c, p.x, p.y);
if(b instanceof JRadioButton) ((JRadioButton)b).doClick();
}
}
});