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101 lines
3.1 KiB
Java
101 lines
3.1 KiB
Java
/*
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* Copyright (c) 2016, 2018, Oracle and/or its affiliates. All rights reserved.
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* DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
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*
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* This code is free software; you can redistribute it and/or modify it
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* under the terms of the GNU General Public License version 2 only, as
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* published by the Free Software Foundation. Oracle designates this
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* particular file as subject to the "Classpath" exception as provided
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* by Oracle in the LICENSE file that accompanied this code.
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*
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* This code is distributed in the hope that it will be useful, but WITHOUT
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* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
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* FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
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* version 2 for more details (a copy is included in the LICENSE file that
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* accompanied this code).
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*
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* You should have received a copy of the GNU General Public License version
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* 2 along with this work; if not, write to the Free Software Foundation,
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* Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
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*
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* Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
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* or visit www.oracle.com if you need additional information or have any
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* questions.
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*/
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package java.awt.desktop;
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import java.awt.Desktop;
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import java.awt.GraphicsEnvironment;
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import java.awt.HeadlessException;
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/**
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* Event sent when the user session has been changed.
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*
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* Some systems may provide a reason of a user session change.
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*
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* @see UserSessionListener#userSessionActivated(UserSessionEvent)
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* @see UserSessionListener#userSessionDeactivated(UserSessionEvent)
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*
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* @since 9
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*/
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public final class UserSessionEvent extends AppEvent {
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private static final long serialVersionUID = 6747138462796569055L;
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private final Reason reason;
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/**
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* Kinds of available reasons of user session change.
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*/
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public static enum Reason {
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/**
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* The system does not provide a reason for a session change.
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*/
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UNSPECIFIED,
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/**
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* The session was connected/disconnected to the console terminal.
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*/
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CONSOLE,
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/**
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* The session was connected/disconnected to the remote terminal.
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*/
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REMOTE,
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/**
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* The session has been locked/unlocked.
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*/
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LOCK
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}
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/**
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* Constructs a {@code UserSessionEvent}.
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*
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* @param reason the reason of the user session change
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* @throws HeadlessException if {@link GraphicsEnvironment#isHeadless()}
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* returns {@code true}
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* @throws UnsupportedOperationException if Desktop API is not supported on
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* the current platform
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* @see Desktop#isDesktopSupported()
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* @see java.awt.GraphicsEnvironment#isHeadless
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*/
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public UserSessionEvent(Reason reason) {
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this.reason = reason;
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}
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/**
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* Gets a reason of the user session change.
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*
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* @return reason a reason
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* @see Reason#UNSPECIFIED
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* @see Reason#CONSOLE
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* @see Reason#REMOTE
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* @see Reason#LOCK
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*/
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public Reason getReason() {
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return reason;
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}
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}
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