1/*
2 * Copyright (c) 2016, 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
26package java.awt.desktop;
27
28
29/**
30 * Implementors receive notification when the user session changes.
31 *
32 * This notification is useful for discontinuing a costly animation,
33 * or indicating that the user is no longer present on a network service.
34 *
35 * Some systems may provide a reason of the user session change.
36 *
37 * @see UserSessionEvent.Reason#UNSPECIFIED
38 * @see UserSessionEvent.Reason#CONSOLE
39 * @see UserSessionEvent.Reason#REMOTE
40 * @see UserSessionEvent.Reason#LOCK
41 *
42 * @since 9
43 */
44public interface UserSessionListener extends SystemEventListener {
45    /**
46     * Called when the user session has been switched away.
47     * @param e the user session switch event
48     */
49    public void userSessionDeactivated(final UserSessionEvent e);
50
51    /**
52     * Called when the user session has been switched to.
53     * @param e the user session switch event
54     */
55    public void userSessionActivated(final UserSessionEvent e);
56}
57