Clients/Java/SwingDomainListener.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: SwingDomainListener.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 DomainListener callbacks via SwingUtilities.invokeAndWait(). */
  42
  43 public class SwingDomainListener implements Runnable, DomainListener
  44 {
  45         /** Create a listener for DNSSD that will call your listener on the Swing/AWT event thread. */
  46         public  SwingDomainListener( DomainListener listener)
  47         { fListener = listener; fErrorCode = 0; }
  48
  49         /** (Clients should not call this method directly.) */
  50         public void     operationFailed( DNSSDService service, int errorCode)
  51         {
  52                 fEnumerator = service;
  53                 fErrorCode = errorCode;
  54                 this.schedule();
  55         }
  56
  57         /** (Clients should not call this method directly.) */
  58         public void             domainFound( DNSSDService domainEnum, int flags, int ifIndex, String domain)
  59
  60         {
  61                 fEnumerator = domainEnum;
  62                 fIsAdd = true;
  63                 fFlags = flags;
  64                 fIndex = ifIndex;
  65                 fDomain = domain;
  66                 this.schedule();
  67         }
  68
  69         /** (Clients should not call this method directly.) */
  70         public void             domainLost( DNSSDService domainEnum, int flags, int ifIndex, String domain)
  71         {
  72                 fEnumerator = domainEnum;
  73                 fIsAdd = false;
  74                 fFlags = flags;
  75                 fIndex = ifIndex;
  76                 fDomain = domain;
  77                 this.schedule();
  78         }
  79
  80         /** (Clients should not call this method directly.) */
  81         public void             run()
  82         {
  83                 if ( fErrorCode != 0)
  84                         fListener.operationFailed( fEnumerator, fErrorCode);
  85                 else if ( fIsAdd)
  86                         fListener.domainFound( fEnumerator, fFlags, fIndex, fDomain);
  87                 else
  88                         fListener.domainLost( fEnumerator, fFlags, fIndex, fDomain);
  89         }
  90
  91         protected void  schedule()
  92         {
  93                 try {
  94                         SwingUtilities.invokeAndWait( this);
  95                 }
  96                 catch ( Exception e)
  97                 {
  98                         e.printStackTrace();
  99                 }
 100         }
 101
 102         protected DomainListener        fListener;
 103
 104         protected boolean                       fIsAdd;
 105         protected DNSSDService          fEnumerator;
 106         protected int                           fFlags;
 107         protected int                           fIndex;
 108         protected int                           fErrorCode;
 109         protected String                        fDomain;
 110 }
 111