@Override
      public void popupMenuWillBecomeVisible(PopupMenuEvent e) {
        HelpTooltip.disableTooltip(targetComponent);
        if (getComponentCount() == 0) {
          updateChildren(null);
        }
        myManager.addActionPopup(ActionPopupMenuImpl.this);
      }
@Override
      public void popupMenuWillBecomeVisible(PopupMenuEvent e)