static <A extends JComponent> A bindLiveValueListenerToComponent(A component, final LiveValue lv, final Runnable listener) {
  if (lv != null)
    bindToComponent(component,
      r {
        ifdef bindLiveValueListenerToComponent_debug
          print("bindLiveValueListenerToComponent: showing");
        endifdef
        lv.onChangeAndNow(listener);
      },
      r { lv.removeOnChangeListener(listener) });
  ret component;
}