Clients/Java/SwingQueryListener.java

   1 /*
   2  * Copyright (c) 2004 Apple Computer, Inc. All rights reserved.
   3  *
   4  * Disclaimer: IMPORTANT:  This Apple software is supplied to you by Apple Computer, Inc.
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   8  * please do not use, install, modify or redistribute this Apple software.
   9  *
  10  * In consideration of your agreement to abide by the following terms, and subject
  11  * to these terms, Apple grants you a personal, non-exclusive license, under Apple's
  12  * copyrights in this original Apple software (the "Apple Software"), to use,
  13  * reproduce, modify and redistribute the Apple Software, with or without
  14  * modifications, in source and/or binary forms; provided that if you redistribute
  15  * the Apple Software in its entirety and without modifications, you must retain
  16  * this notice and the following text and disclaimers in all such redistributions of
  17  * the Apple Software.  Neither the name, trademarks, service marks or logos of
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  19  * Apple Software without specific prior written permission from Apple.  Except as
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  21  * are granted by Apple herein, including but not limited to any patent rights that
  22  * may be infringed by your derivative works or by other works in which the Apple
  23  * Software may be incorporated.
  24  *
  25  * The Apple Software is provided by Apple on an "AS IS" basis.  APPLE MAKES NO
  26  * WARRANTIES, EXPRESS OR IMPLIED, INCLUDING WITHOUT LIMITATION THE IMPLIED
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  34  * ARISING IN ANY WAY OUT OF THE USE, REPRODUCTION, MODIFICATION AND/OR DISTRIBUTION
  35  * OF THE APPLE SOFTWARE, HOWEVER CAUSED AND WHETHER UNDER THEORY OF CONTRACT, TORT
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  38  */
  39
  40
  41 import javax.swing.*;
  42 import com.apple.dnssd.*;
  43
  44
  45 /**     Use this to schedule QueryListener callbacks via SwingUtilities.invokeAndWait(). */
  46
  47 public class SwingQueryListener implements Runnable, QueryListener
  48 {
  49         /** Create a listener for DNSSD that will call your listener on the Swing/AWT event thread. */
  50         public  SwingQueryListener( QueryListener listener)
  51         { fListener = listener; }
  52
  53         public void     operationFailed( DNSSDService service, int errorCode)
  54         {
  55                 fQuery = service;
  56                 fErrorCode = errorCode;
  57                 this.schedule();
  58         }
  59
  60         /** (Clients should not call this method directly.) */
  61         public void     queryAnswered( DNSSDService query, int flags, int ifIndex, String fullName,
  62                                                                 int rrtype, int rrclass, byte[] rdata, int ttl)
  63         {
  64                 fQuery = query;
  65                 fFlags = flags;
  66                 fIndex = ifIndex;
  67                 fFullName = fullName;
  68                 fType = rrtype;
  69                 fClass = rrclass;
  70                 fData = rdata;
  71                 fTTL = ttl;
  72                 this.schedule();
  73         }
  74
  75         /** (Clients should not call this method directly.) */
  76         public void             run()
  77         {
  78                 if ( fErrorCode != 0)
  79                         fListener.operationFailed( fQuery, fErrorCode);
  80                 else
  81                         fListener.queryAnswered( fQuery, fFlags, fIndex, fFullName, fType, fClass, fData, fTTL);
  82         }
  83
  84         protected void  schedule()
  85         {
  86                 try {
  87                         SwingUtilities.invokeAndWait( this);
  88                 }
  89                 catch ( Exception e)
  90                 {
  91                         e.printStackTrace();
  92                 }
  93         }
  94
  95         protected QueryListener         fListener;
  96
  97         protected DNSSDService          fQuery;
  98         protected int                           fFlags;
  99         protected int                           fIndex;
 100         protected int                           fErrorCode;
 101         protected String                        fFullName;
 102         protected int                           fType;
 103         protected int                           fClass;
 104         protected byte[]                        fData;
 105         protected int                           fTTL;
 106 }
 107