@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())));
}