Swing/ButtonsInListCell のバックアップ(No.7)

class ButtonsRenderer extends JPanel implements ListCellRenderer {
  public JTextArea label = new JTextArea();
  private final JButton viewButton = new JButton(new AbstractAction("view") {
    @Override public void actionPerformed(ActionEvent e) {
      System.out.println("aaa");
    }
  });
  private final JButton editButton = new JButton(new AbstractAction("edit") {
    @Override public void actionPerformed(ActionEvent e) {
      System.out.println("bbb");
    }
  });
  public ButtonsRenderer() {
    super(new BorderLayout());
    setBorder(BorderFactory.createEmptyBorder(5, 5, 5, 0));
    setOpaque(true);
    label.setLineWrap(true);
    label.setOpaque(false);
    add(label);

    Box box = Box.createHorizontalBox();
    for (JButton b: Arrays.asList(viewButton, editButton)) {
      b.setFocusable(false);
      b.setRolloverEnabled(false);
      box.add(b);
      box.add(Box.createHorizontalStrut(5));
    }
    add(box, BorderLayout.EAST);
  }
  private final Color evenColor = new Color(230, 255, 230);
  @Override public Component getListCellRendererComponent(
      JList list, Object value, int index,
      boolean isSelected, boolean hasFocus) {
    label.setText((value == null) ? "" : value.toString());
    if (isSelected) {
      setBackground(list.getSelectionBackground());
      label.setForeground(list.getSelectionForeground());
    } else {
      setBackground(index % 2 == 0 ? evenColor : list.getBackground());
      label.setForeground(list.getForeground());
    }
    for (JButton b : java.util.Arrays.asList(viewButton, editButton)) {
      b.getModel().setRollover(false);
      b.getModel().setArmed(false);
      b.getModel().setPressed(false);
      b.getModel().setSelected(false);
    }
    if (button != null) {
      if (index == pressedIndex) {
        button.getModel().setSelected(true);
        button.getModel().setArmed(true);
        button.getModel().setPressed(true);
      } else if (index == rolloverIndex) {
        button.getModel().setRollover(true);
      }
    }
    return this;
  }
  public int pressedIndex  = -1;
  public int rolloverIndex = -1;
  public JButton button = null;
}