1/*
2 * Copyright (c) 2002, 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
26package com.sun.java.accessibility.util;
27
28import java.awt.*;
29import java.util.*;
30import javax.accessibility.*;
31
32/**
33 * The {@code GUIInitializedListener} interface is used by the {@link EventQueueMonitor}
34 * class to notify an interested party when the GUI subsystem has been
35 * initialized.  This is necessary because assistive technologies can
36 * be loaded before the GUI subsystem is initialized.  As a result,
37 * assistive technologies should check the
38 * {@link EventQueueMonitor#isGUIInitialized isGUIInitialized} method
39 * of {@code EventQueueMonitor} before creating any GUI components.  If the
40 * return value is true, assistive technologies can create GUI components
41 * following the same thread restrictions as any other application.  If
42 * the return value is false, the assistive technology should register
43 * a {@code GUIInitializedListener} with the {@code EventQueueMonitor} to be notified
44 * when the GUI subsystem is initialized.
45 *
46 * @see EventQueueMonitor
47 * @see EventQueueMonitor#isGUIInitialized
48 * @see EventQueueMonitor#addGUIInitializedListener
49 * @see EventQueueMonitor#removeGUIInitializedListener
50 *
51 */
52public interface GUIInitializedListener extends EventListener {
53
54    /**
55     * Invoked when the GUI subsystem is initialized and it's OK for
56     * the assisitive technology to create instances of GUI objects.
57     */
58    public void guiInitialized();
59
60}
61