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

   1 //\r
   2 // System.Messaging\r
   3 //\r
   4 // Authors:\r
   5 //      Peter Van Isacker (sclytrack@planetinternet.be)\r
   6 //      Rafael Teixeira   (rafaelteixeirabr@hotmail.com)\r
   7 //\r
   8 // (C) 2003 Peter Van Isacker\r
   9 //\r
  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;\r
  32 using System.Collections;\r
  33 \r
  34 namespace System.Messaging\r
  35 {\r
  36         public class MessageQueueEnumerator : MarshalByRefObject, IEnumerator, IDisposable\r
  37         {\r
  38                 private bool disposed;\r
  39                 private ArrayList queueList;\r
  40                 private int currentIndex;\r
  41 \r
  42                 internal MessageQueueEnumerator (ArrayList queueList)\r
  43                 {\r
  44                         this.queueList = queueList;\r
  45                         this.currentIndex = -1;\r
  46                 }\r
  47 \r
  48                 public MessageQueue Current\r
  49                 {\r
  50                         get\r
  51                         {\r
  52                                 if (currentIndex < 0 || currentIndex >= queueList.Count)\r
  53                                         return null;\r
  54                                 return (MessageQueue) queueList[currentIndex];\r
  55                         }\r
  56                 }\r
  57 \r
  58                 object IEnumerator.Current\r
  59                 {\r
  60                         get\r
  61                         {\r
  62                                 if (currentIndex < 0 || currentIndex >= queueList.Count)\r
  63                                         return null;\r
  64                                 return queueList[currentIndex];\r
  65                         }\r
  66                 }\r
  67 \r
  68                 public IntPtr LocatorHandle\r
  69                 {\r
  70                         [MonoTODO]\r
  71                         get\r
  72                         {\r
  73                                 throw new NotImplementedException ();\r
  74                         }\r
  75                 }\r
  76 \r
  77                 [MonoTODO]\r
  78                 public void Close ()\r
  79                 {\r
  80                 }\r
  81 \r
  82                 public void Dispose ()\r
  83                 {\r
  84                         Dispose (true);\r
  85                         GC.SuppressFinalize (this);\r
  86                 }\r
  87 \r
  88                 protected virtual void Dispose (bool disposing)\r
  89                 {\r
  90                         Close ();\r
  91                         disposed = true;\r
  92                 }\r
  93 \r
  94                 public bool MoveNext ()\r
  95                 {\r
  96                         return (++currentIndex) < queueList.Count;\r
  97                 }\r
  98 \r
  99                 public void Reset ()\r
 100                 {\r
 101                         currentIndex = -1;\r
 102                 }\r
 103 \r
 104                 ~MessageQueueEnumerator ()\r
 105                 {\r
 106                         if (!disposed)\r
 107                                 Dispose (false);\r
 108                 }\r
 109         }\r
 110 }\r