/*

 * 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.

 *

 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA

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 */

package com.sun.java.accessibility.util;

import java.awt.*;

import java.util.*;

import javax.accessibility.*;

/**

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

 * class to notify an interested party when a top level window is created

 * or destroyed in the Java Virtual Machine.  Classes wishing to express

 * an interest in top level window events should implement this interface

 * and register themselves with the {@code EventQueueMonitor} by calling the

 * {@link EventQueueMonitor#addTopLevelWindowListener EventQueueMonitor.addTopLevelWindowListener}

 * class method.

 *

 * @see EventQueueMonitor

 * @see EventQueueMonitor#addTopLevelWindowListener

 * @see EventQueueMonitor#removeTopLevelWindowListener

 *

 */

public interface TopLevelWindowListener extends EventListener {

    /**

     * Invoked when a new top level window has been created.

     *

     * @param w the Window that was created

     */

    public void topLevelWindowCreated(Window w);

    /**

     * Invoked when a top level window has been destroyed.

     *

     * @param w the Window that was destroyed

     */

    public void topLevelWindowDestroyed(Window w);

}