mcs/class/System.Messaging/System.Messaging/MessageQueueEnumerator.cs

   1 //
   2 // System.Messaging
   3 //
   4 // Authors:
   5 //      Peter Van Isacker (sclytrack@planetinternet.be)
   6 //      Rafael Teixeira   (rafaelteixeirabr@hotmail.com)
   7 //
   8 // (C) 2003 Peter Van Isacker
   9 //
  10
  11 //
  12 // Permission is hereby granted, free of charge, to any person obtaining
  13 // a copy of this software and associated documentation files (the
  14 // "Software"), to deal in the Software without restriction, including
  15 // without limitation the rights to use, copy, modify, merge, publish,
  16 // distribute, sublicense, and/or sell copies of the Software, and to
  17 // permit persons to whom the Software is furnished to do so, subject to
  18 // the following conditions:
  19 //
  20 // The above copyright notice and this permission notice shall be
  21 // included in all copies or substantial portions of the Software.
  22 //
  23 // THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
  24 // EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
  25 // MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
  26 // NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE
  27 // LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION
  28 // OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION
  29 // WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
  30 //
  31 using System;
  32 using System.Collections;
  33
  34 namespace System.Messaging
  35 {
  36         public class MessageQueueEnumerator : MarshalByRefObject, IEnumerator, IDisposable
  37         {
  38                 private bool disposed;
  39                 private ArrayList queueList;
  40                 private int currentIndex;
  41
  42                 internal MessageQueueEnumerator (ArrayList queueList)
  43                 {
  44                         this.queueList = queueList;
  45                         this.currentIndex = -1;
  46                 }
  47
  48                 public MessageQueue Current
  49                 {
  50                         get
  51                         {
  52                                 if (currentIndex < 0 || currentIndex >= queueList.Count)
  53                                         return null;
  54                                 return (MessageQueue) queueList[currentIndex];
  55                         }
  56                 }
  57
  58                 object IEnumerator.Current
  59                 {
  60                         get
  61                         {
  62                                 if (currentIndex < 0 || currentIndex >= queueList.Count)
  63                                         return null;
  64                                 return queueList[currentIndex];
  65                         }
  66                 }
  67
  68                 public IntPtr LocatorHandle
  69                 {
  70                         [MonoTODO]
  71                         get
  72                         {
  73                                 throw new NotImplementedException ();
  74                         }
  75                 }
  76
  77                 [MonoTODO]
  78                 public void Close ()
  79                 {
  80                 }
  81
  82                 public void Dispose ()
  83                 {
  84                         Dispose (true);
  85                         GC.SuppressFinalize (this);
  86                 }
  87
  88                 protected virtual void Dispose (bool disposing)
  89                 {
  90                         Close ();
  91                         disposed = true;
  92                 }
  93
  94                 public bool MoveNext ()
  95                 {
  96                         return (++currentIndex) < queueList.Count;
  97                 }
  98
  99                 public void Reset ()
 100                 {
 101                         currentIndex = -1;
 102                 }
 103
 104                 ~MessageQueueEnumerator ()
 105                 {
 106                         if (!disposed)
 107                                 Dispose (false);
 108                 }
 109         }
 110 }