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 TopLevelWindowListener} interface is used by the {@link EventQueueMonitor}
  34  * class to notify an interested party when a top level window is created
  35  * or destroyed in the Java Virtual Machine.  Classes wishing to express
  36  * an interest in top level window events should implement this interface
  37  * and register themselves with the {@code EventQueueMonitor} by calling the
  38  * {@link EventQueueMonitor#addTopLevelWindowListener EventQueueMonitor.addTopLevelWindowListener}
  39  * class method.
  40  *
  41  * @see EventQueueMonitor
  42  * @see EventQueueMonitor#addTopLevelWindowListener
  43  * @see EventQueueMonitor#removeTopLevelWindowListener
  44  *
  45  */
  46 @jdk.Exported
  47 public interface TopLevelWindowListener extends EventListener {
  48 
  49     /**
  50      * Invoked when a new top level window has been created.
  51      * 
  52      * @param w the Window that was created
  53      */
  54     public void topLevelWindowCreated(Window w);
  55 
  56     /**
  57      * Invoked when a top level window has been destroyed.
  58      * 
  59      * @param w the Window that was destroyed
  60      */
  61     public void topLevelWindowDestroyed(Window w);
  62 }