mcs/class/corlib/System.Collections/ReadOnlyCollectionBase.cs

   1 //
   2 // System.Collections.ReadOnlyCollectionBase.cs
   3 //
   4 // Author:
   5 //   Nick Drochak II (ndrochak@gol.com)
   6 //
   7 // (C) 2001 Nick Drochak II
   8 //
   9
  10 //
  11 // Copyright (C) 2004 Novell, Inc (http://www.novell.com)
  12 //
  13 // Permission is hereby granted, free of charge, to any person obtaining
  14 // a copy of this software and associated documentation files (the
  15 // "Software"), to deal in the Software without restriction, including
  16 // without limitation the rights to use, copy, modify, merge, publish,
  17 // distribute, sublicense, and/or sell copies of the Software, and to
  18 // permit persons to whom the Software is furnished to do so, subject to
  19 // the following conditions:
  20 //
  21 // The above copyright notice and this permission notice shall be
  22 // included in all copies or substantial portions of the Software.
  23 //
  24 // THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
  25 // EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
  26 // MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
  27 // NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE
  28 // LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION
  29 // OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION
  30 // WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
  31 //
  32
  33 using System;
  34
  35 namespace System.Collections {
  36
  37         [Serializable]
  38         public abstract class ReadOnlyCollectionBase : ICollection,     IEnumerable {
  39
  40                 // private instance properties
  41                 private System.Collections.ArrayList list;
  42
  43                 // public instance properties
  44                 public int Count { get { return InnerList.Count; } }
  45
  46                 // Public Instance Methods
  47                 public System.Collections.IEnumerator GetEnumerator() { return InnerList.GetEnumerator(); }
  48
  49                 // Protected Instance Constructors
  50                 protected ReadOnlyCollectionBase() {
  51                         this.list = new System.Collections.ArrayList();
  52                 }
  53
  54                 // Protected Instance Properties
  55                 protected System.Collections.ArrayList InnerList {get { return this.list; } }
  56
  57                 // ICollection methods
  58                 void ICollection.CopyTo(Array array, int index) {
  59                         lock (InnerList) { InnerList.CopyTo(array, index); }
  60                 }
  61                 object ICollection.SyncRoot {
  62                                 get { return InnerList.SyncRoot; }
  63                         }
  64                 bool ICollection.IsSynchronized {
  65                         get { return InnerList.IsSynchronized; }
  66                 }
  67         }
  68 }