/**
* Returns whether the given component is "actively" shown in screen, that is, it or any of its
* ancestors is focused.
*
* @param aComponent the component to determine whether it is actively shown on screen, may be
* <code>null</code>.
* @return <code>true</code> if the given component is actively shown, <code>false</code>
* otherwise.
*/
public static final boolean isActivelyShown(final Component aComponent) {
final KeyboardFocusManager kbdFocusManager =
KeyboardFocusManager.getCurrentKeyboardFocusManager();
final Window owner = kbdFocusManager.getFocusedWindow();
return ((aComponent != null)
&& (owner != null)
&& ((owner == aComponent) || owner.isAncestorOf(aComponent)));
}
