Clients/Java/SwingQueryListener.java

   1 /*
   2  * Copyright (c) 2004 Apple Computer, Inc. All rights reserved.
   3  *
   4  * @APPLE_LICENSE_HEADER_START@
   5  *
   6  * Copyright (c) 1999-2003 Apple Computer, Inc.  All Rights Reserved.
   7  *
   8  * This file contains Original Code and/or Modifications of Original Code
   9  * as defined in and that are subject to the Apple Public Source License
  10  * Version 2.0 (the 'License'). You may not use this file except in
  11  * compliance with the License. Please obtain a copy of the License at
  12  * http://www.opensource.apple.com/apsl/ and read it before using this
  13  * file.
  14  *
  15  * The Original Code and all software distributed under the License are
  16  * distributed on an 'AS IS' basis, WITHOUT WARRANTY OF ANY KIND, EITHER
  17  * EXPRESS OR IMPLIED, AND APPLE HEREBY DISCLAIMS ALL SUCH WARRANTIES,
  18  * INCLUDING WITHOUT LIMITATION, ANY WARRANTIES OF MERCHANTABILITY,
  19  * FITNESS FOR A PARTICULAR PURPOSE, QUIET ENJOYMENT OR NON-INFRINGEMENT.
  20  * Please see the License for the specific language governing rights and
  21  * limitations under the License.
  22  *
  23  * @APPLE_LICENSE_HEADER_END@
  24
  25     Change History (most recent first):
  26
  27 $Log: SwingQueryListener.java,v $
  28 Revision 1.2  2004/04/30 21:53:35  rpantos
  29 Change line endings for CVS.
  30
  31 Revision 1.1  2004/04/30 16:29:35  rpantos
  32 First checked in.
  33
  34  */
  35
  36
  37 import javax.swing.*;
  38 import com.apple.dnssd.*;
  39
  40
  41 /**     Use this to schedule QueryListener callbacks via SwingUtilities.invokeAndWait(). */
  42
  43 public class SwingQueryListener implements Runnable, QueryListener
  44 {
  45         /** Create a listener for DNSSD that will call your listener on the Swing/AWT event thread. */
  46         public  SwingQueryListener( QueryListener listener)
  47         { fListener = listener; }
  48
  49         public void     operationFailed( DNSSDService service, int errorCode)
  50         {
  51                 fQuery = service;
  52                 fErrorCode = errorCode;
  53                 this.schedule();
  54         }
  55
  56         /** (Clients should not call this method directly.) */
  57         public void     queryAnswered( DNSSDService query, int flags, int ifIndex, String fullName,
  58                                                                 int rrtype, int rrclass, byte[] rdata, int ttl)
  59         {
  60                 fQuery = query;
  61                 fFlags = flags;
  62                 fIndex = ifIndex;
  63                 fFullName = fullName;
  64                 fType = rrtype;
  65                 fClass = rrclass;
  66                 fData = rdata;
  67                 fTTL = ttl;
  68                 this.schedule();
  69         }
  70
  71         /** (Clients should not call this method directly.) */
  72         public void             run()
  73         {
  74                 if ( fErrorCode != 0)
  75                         fListener.operationFailed( fQuery, fErrorCode);
  76                 else
  77                         fListener.queryAnswered( fQuery, fFlags, fIndex, fFullName, fType, fClass, fData, fTTL);
  78         }
  79
  80         protected void  schedule()
  81         {
  82                 try {
  83                         SwingUtilities.invokeAndWait( this);
  84                 }
  85                 catch ( Exception e)
  86                 {
  87                         e.printStackTrace();
  88                 }
  89         }
  90
  91         protected QueryListener         fListener;
  92
  93         protected DNSSDService          fQuery;
  94         protected int                           fFlags;
  95         protected int                           fIndex;
  96         protected int                           fErrorCode;
  97         protected String                        fFullName;
  98         protected int                           fType;
  99         protected int                           fClass;
 100         protected byte[]                        fData;
 101         protected int                           fTTL;
 102 }
 103