Swing/MaskForButton のバックアップ(No.2)

tabbedPane.addMouseListener(new MouseAdapter() {
  @Override public void mouseClicked(MouseEvent e) {
    int button = e.getButton();
    boolean isB1Double = e.getClickCount() == 2 && button == 1;
    boolean isB2Down = MouseInfo.getNumberOfButtons() > 2 && button == 2;
    JTabbedPane tabbedPane = (JTabbedPane) e.getComponent();
    int idx = tabbedPane.indexAtLocation(e.getX(), e.getY());
    if (idx >= 0 && (isB2Down || isB1Double)) {
      tabbedPane.remove(idx);
    }
  }
  @Override public void mousePressed(MouseEvent e) {
    System.out.println("BUTTON2 mousePressed: "
      + Objects.toString((e.getModifiersEx() & InputEvent.getMaskForButton(2)) != 0));
  }
  @Override public void mouseReleased(MouseEvent e) {
    System.out.println("BUTTON2 mouseReleased: "
      + Objects.toString((e.getModifiersEx() & InputEvent.getMaskForButton(2)) != 0));
  }
});