/*

 * Copyright (c) 2002, 2015, Oracle and/or its affiliates. All rights reserved.

 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.

 *

 * This code is free software; you can redistribute it and/or modify it

 * under the terms of the GNU General Public License version 2 only, as

 * published by the Free Software Foundation.  Oracle designates this

 * particular file as subject to the "Classpath" exception as provided

 * by Oracle in the LICENSE file that accompanied this code.

 *

 * This code is distributed in the hope that it will be useful, but WITHOUT

 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or

 * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License

 * version 2 for more details (a copy is included in the LICENSE file that

 * accompanied this code).

 *

 * You should have received a copy of the GNU General Public License version

 * 2 along with this work; if not, write to the Free Software Foundation,

 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.

 *

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 */

package com.sun.java.accessibility.util;

import java.awt.*;

import java.util.*;

import javax.accessibility.*;

/**

 * The {@code GUIInitializedListener} interface is used by the {@link EventQueueMonitor}

 * class to notify an interested party when the GUI subsystem has been

 * initialized.  This is necessary because assistive technologies can

 * be loaded before the GUI subsystem is initialized.  As a result,

 * assistive technologies should check the

 * {@link EventQueueMonitor#isGUIInitialized isGUIInitialized} method

 * of {@code EventQueueMonitor} before creating any GUI components.  If the

 * return value is true, assistive technologies can create GUI components

 * following the same thread restrictions as any other application.  If

 * the return value is false, the assistive technology should register

 * a {@code GUIInitializedListener} with the {@code EventQueueMonitor} to be notified

 * when the GUI subsystem is initialized.

 *

 * @see EventQueueMonitor

 * @see EventQueueMonitor#isGUIInitialized

 * @see EventQueueMonitor#addGUIInitializedListener

 * @see EventQueueMonitor#removeGUIInitializedListener

 *

 */

public interface GUIInitializedListener extends EventListener {

    /**

     * Invoked when the GUI subsystem is initialized and it's OK for

     * the assisitive technology to create instances of GUI objects.

     */

    public void guiInitialized();

}