/*
 * This file is part of the LibreOffice project.
 *
 * This Source Code Form is subject to the terms of the Mozilla Public
 * License, v. 2.0. If a copy of the MPL was not distributed with this
 * file, You can obtain one at http://mozilla.org/MPL/2.0/.
 *
 * This file incorporates work covered by the following license notice:
 *
 *   Licensed to the Apache Software Foundation (ASF) under one or more
 *   contributor license agreements. See the NOTICE file distributed
 *   with this work for additional information regarding copyright
 *   ownership. The ASF licenses this file to you under the Apache
 *   License, Version 2.0 (the "License"); you may not use this file
 *   except in compliance with the License. You may obtain a copy of
 *   the License at http://www.apache.org/licenses/LICENSE-2.0 .
 */

import com.sun.star.accessibility.*;
import com.sun.star.lang.EventObject;
import com.sun.star.uno.*;

class QueuedListener
    implements XAccessibleEventListener
{
    public QueuedListener (EventListener aListener)
    {
        maListener = aListener;
    }


    public void disposing( final EventObject aEvent)
    {
        XAccessibleContext xContext = UnoRuntime.queryInterface(
            XAccessibleContext.class, aEvent.Source);
        if (xContext == null)
        {
            XAccessible xAccessible = UnoRuntime.queryInterface(
                XAccessible.class, aEvent.Source);
            if (xAccessible != null)
                xContext = xAccessible.getAccessibleContext();
        }
        final XAccessibleContext xSource = xContext;
        EventQueue.Instance().addDisposingEvent (new Runnable()
            {
                public void run()
                {
                    if (QueuedListener.this.maListener != null)
                        QueuedListener.this.maListener.disposing (xSource);
                }
            }
            );
    }

    public void notifyEvent( final AccessibleEventObject aEvent )
    {
        EventQueue.Instance().addEvent (new Runnable()
            {
                public void run()
                {
                    QueuedListener.this.maListener.notifyEvent( aEvent );
                }
            }
            );
    }

    private EventListener maListener;
}