// instantiate only once per component!
sclass InstantNeverHideToolTip > MouseAdapter {
  JComponent component;
  S text;
  JToolTip toolTip;
  private Popup popup;
  
  *(S *text, JComponent *component) {
    swing {
      c.addMouseListener(InstantNeverHideToolTip.this);
      toolTip = component.createToolTip();
    }
  }
  
  public void onMouseEnter aka showToolTip(MouseEvent e) {
    if (empty(text)) ret;
    toolTip.setTipText(text);
    int x = e.getXOnScreen();
    int y = e.getYOnScreen();
    popup = PopupFactory.getSharedInstance().getPopup(component, toolTip, x, y);
    popup.show();
  }

  void hideToolTip() {
    if (popup != null) {
      popup.hide();
      popup = null;
    }
  }
}