1 /*
   2  * Copyright (c) 2015, Oracle and/or its affiliates. All rights reserved.
   3  * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
   4  *
   5  * This code is free software; you can redistribute it and/or modify it
   6  * under the terms of the GNU General Public License version 2 only, as
   7  * published by the Free Software Foundation.  Oracle designates this
   8  * particular file as subject to the "Classpath" exception as provided
   9  * by Oracle in the LICENSE file that accompanied this code.
  10  *
  11  * This code is distributed in the hope that it will be useful, but WITHOUT
  12  * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
  13  * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
  14  * version 2 for more details (a copy is included in the LICENSE file that
  15  * accompanied this code).
  16  *
  17  * You should have received a copy of the GNU General Public License version
  18  * 2 along with this work; if not, write to the Free Software Foundation,
  19  * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
  20  *
  21  * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
  22  * or visit www.oracle.com if you need additional information or have any
  23  * questions.
  24  */
  25 
  26 package java.awt.desktop;
  27 
  28 import java.awt.AppEvent.AppForegroundEvent;
  29 
  30 /**
  31  * Implementors are notified when the app becomes the foreground app and when it resigns being the foreground app.
  32  * This notification is useful for hiding and showing transient UI like palette windows which should be hidden when the app is in the background.
  33  */
  34 public interface AppForegroundListener extends SystemEventListener {
  35     /**
  36      * Called when the app becomes the foreground app.
  37      * @param e the app became foreground notification.
  38      */
  39     public void appRaisedToForeground(final AppForegroundEvent e);
  40 
  41     /**
  42      * Called when the app resigns to the background and another app becomes the foreground app.
  43      * @param e the app resigned foreground notification.
  44      */
  45     public void appMovedToBackground(final AppForegroundEvent e);
  46 }