/* -*- Mode: Java; tab-width: 4 -*-
 *
 * Copyright (c) 2004 Apple Computer, Inc. All rights reserved.
 *
 * Disclaimer: IMPORTANT:  This Apple software is supplied to you by Apple Computer, Inc.
 * ("Apple") in consideration of your agreement to the following terms, and your
 * use, installation, modification or redistribution of this Apple software
 * constitutes acceptance of these terms.  If you do not agree with these terms,
 * please do not use, install, modify or redistribute this Apple software.
 *
 * In consideration of your agreement to abide by the following terms, and subject
 * to these terms, Apple grants you a personal, non-exclusive license, under Apple's
 * copyrights in this original Apple software (the "Apple Software"), to use,
 * reproduce, modify and redistribute the Apple Software, with or without
 * modifications, in source and/or binary forms; provided that if you redistribute
 * the Apple Software in its entirety and without modifications, you must retain
 * this notice and the following text and disclaimers in all such redistributions of
 * the Apple Software.  Neither the name, trademarks, service marks or logos of
 * Apple Computer, Inc. may be used to endorse or promote products derived from the
 * Apple Software without specific prior written permission from Apple.  Except as
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 * may be infringed by your derivative works or by other works in which the Apple
 * Software may be incorporated.
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 * The Apple Software is provided by Apple on an "AS IS" basis.  APPLE MAKES NO
 * WARRANTIES, EXPRESS OR IMPLIED, INCLUDING WITHOUT LIMITATION THE IMPLIED
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 * PURPOSE, REGARDING THE APPLE SOFTWARE OR ITS USE AND OPERATION ALONE OR IN
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 */


import javax.swing.*;
import com.apple.dnssd.*;


/**	Use this to schedule QueryListener callbacks via SwingUtilities.invokeAndWait(). */

public class SwingQueryListener implements Runnable, QueryListener
{
	/** Create a listener for DNSSD that will call your listener on the Swing/AWT event thread. */
	public	SwingQueryListener( QueryListener listener)
	{ fListener = listener; }

	public void	operationFailed( DNSSDService service, int errorCode)
	{
		fQuery = service;
		fErrorCode = errorCode;
		this.schedule();
	}

	/** (Clients should not call this method directly.) */
	public void	queryAnswered( DNSSDService query, int flags, int ifIndex, String fullName, 
								int rrtype, int rrclass, byte[] rdata, int ttl)
	{
		fQuery = query;
		fFlags = flags;
		fIndex = ifIndex;
		fFullName = fullName;
		fType = rrtype;
		fClass = rrclass;
		fData = rdata;
		fTTL = ttl;
		this.schedule();
	}

	/** (Clients should not call this method directly.) */
	public void		run()
	{
		if ( fErrorCode != 0)
			fListener.operationFailed( fQuery, fErrorCode);
		else
			fListener.queryAnswered( fQuery, fFlags, fIndex, fFullName, fType, fClass, fData, fTTL);
	}

	protected void	schedule()
	{
		try {
			SwingUtilities.invokeAndWait( this);
		}
		catch ( Exception e)
		{
			e.printStackTrace();
		}
	}

	protected QueryListener		fListener;

	protected DNSSDService		fQuery;
	protected int				fFlags;
	protected int				fIndex;
	protected int				fErrorCode;
	protected String			fFullName;
	protected int				fType;
	protected int				fClass;
	protected byte[]			fData;
	protected int				fTTL;
}

