1. /*

  2.  * @(#)WindowStateListener.java	1.4 03/01/23

  3.  *

  4.  * Copyright 2003 Sun Microsystems, Inc. All rights reserved.

  5.  * SUN PROPRIETARY/CONFIDENTIAL. Use is subject to license terms.

  6.  */

  7. 

  8. package java.awt.event;

  9. 

  10. import java.util.EventListener;

  11. 

  12. /**

  13.  * The listener interface for receiving window state events.

  14.  * <p>

  15.  * The class that is interested in processing a window state event

  16.  * either implements this interface (and all the methods it contains)

  17.  * or extends the abstract <code>WindowAdapter</code> class

  18.  * (overriding only the methods of interest).

  19.  * <p>

  20.  * The listener object created from that class is then registered with

  21.  * a window using the <code>Window</code>'s

  22.  * <code>addWindowStateListener</code> method.  When the window's

  23.  * state changes by virtue of being iconified, maximized etc., the

  24.  * <code>windowStateChanged</code> method in the listener object is

  25.  * invoked, and the <code>WindowEvent</code> is passed to it.

  26.  * 

  27.  * @see java.awt.event.WindowAdapter

  28.  * @see java.awt.event.WindowEvent

  29.  *

  30.  * @since 1.4

  31.  */

  32. public interface WindowStateListener extends EventListener {

  33.     /**

  34.      * Invoked when window state is changed.

  35.      */

  36.     public void windowStateChanged(WindowEvent e);

  37. }