protected void uninstallKeyboardActions() {
    InputMap input = peer
        .getInputMap(JComponent.WHEN_ANCESTOR_OF_FOCUSED_COMPONENT);
    input
        .remove(KeyStroke.getKeyStroke(KeyEvent.VK_C,
            InputEvent.ALT_MASK));
    input.remove(KeyStroke.getKeyStroke(KeyEvent.VK_PAGE_DOWN, 0));

    peer.getActionMap().remove(POPUP_KEY);
  }
protected void uninstallKeyboardActions()