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 
  26 package com.sun.java.accessibility.util;
  27 
  28 import java.awt.*;
  29 import java.util.*;
  30 import 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  */
  52 @jdk.Exported
  53 public interface GUIInitializedListener extends EventListener {
  54 
  55     /**
  56      * Invoked when the GUI subsystem is initialized and it's OK for
  57      * the assisitive technology to create instances of GUI objects.
  58      */
  59     public void guiInitialized();
  60 
  61 }