示例#1
0
    @Override
    public Dimension getPreferredSize() {
      final Component focusOwner =
          KeyboardFocusManager.getCurrentKeyboardFocusManager().getFocusOwner();
      Point p = null;
      if (focusOwner != null && focusOwner.isShowing()) {
        p = focusOwner.getLocationOnScreen();
      }

      return computeNotBiggerDimension(super.getPreferredSize().getSize(), p);
    }
  @Override
  public Balloon getParentBalloonFor(@Nullable Component c) {
    if (c == null) return null;
    Component eachParent = c;
    while (eachParent != null) {
      if (eachParent instanceof JComponent) {
        Object balloon = ((JComponent) eachParent).getClientProperty(Balloon.KEY);
        if (balloon instanceof Balloon) {
          return (Balloon) balloon;
        }
      }
      eachParent = eachParent.getParent();
    }

    return null;
  }
 public void showUnderneathOf(@NotNull Component aComponent) {
   show(new RelativePoint(aComponent, new Point(0, aComponent.getHeight())));
 }