1 /*
   2  * Copyright (c) 2016, 2018, 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 /**
  29  * Implementors receive notification when the user session changes.
  30  * <p>
  31  * This notification is useful for discontinuing a costly animation, or
  32  * indicating that the user is no longer present on a network service.
  33  * <p>
  34  * Some systems may provide a reason of the user session change.
  35  *
  36  * @see UserSessionEvent.Reason#UNSPECIFIED
  37  * @see UserSessionEvent.Reason#CONSOLE
  38  * @see UserSessionEvent.Reason#REMOTE
  39  * @see UserSessionEvent.Reason#LOCK

  40  * @since 9
  41  */
  42 public interface UserSessionListener extends SystemEventListener {
  43 
  44     /**
  45      * Called when the user session has been switched away.
  46      *
  47      * @param  e the user session switch event
  48      */
  49     public void userSessionDeactivated(UserSessionEvent e);
  50 
  51     /**
  52      * Called when the user session has been switched to.
  53      *
  54      * @param  e the user session switch event
  55      */
  56     public void userSessionActivated(UserSessionEvent e);
  57 }
--- EOF ---