/**
* Creates a new AWT <tt>Container</tt> which can display a single <tt>Component</tt> at a time
* (supposedly, one which represents video) and, in the absence of such a <tt>Component</tt>,
* displays a predefined default <tt>Component</tt> (in accord with the previous supposition, one
* which is the default when there is no video). The returned <tt>Container</tt> will track the
* <tt>Components</tt>s added to and removed from it in order to make sure that
* <tt>noVideoContainer</tt> is displayed as described.
*
* @param noVideoComponent the predefined default <tt>Component</tt> to be displayed in the
* returned <tt>Container</tt> when there is no other <tt>Component</tt> in it
* @return a new <tt>Container</tt> which can display a single <tt>Component</tt> at a time and,
* in the absence of such a <tt>Component</tt>, displays <tt>noVideoComponent</tt>
*/
private VideoContainer createVideoContainer(Component noVideoComponent) {
Container oldParent = noVideoComponent.getParent();
if (oldParent != null) oldParent.remove(noVideoComponent);
return new VideoContainer(noVideoComponent, false);
}
