2 // System.Collections.ReadOnlyCollectionBase.cs
5 // Nick Drochak II (ndrochak@gol.com)
7 // (C) 2001 Nick Drochak II
11 // Copyright (C) 2004 Novell, Inc (http://www.novell.com)
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:
21 // The above copyright notice and this permission notice shall be
22 // included in all copies or substantial portions of the Software.
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.
34 using System.Runtime.InteropServices;
36 namespace System.Collections {
42 public abstract class ReadOnlyCollectionBase : ICollection, IEnumerable {
44 // private instance properties
45 private ArrayList list;
47 // public instance properties
52 int Count { get { return InnerList.Count; } }
54 // Public Instance Methods
55 public IEnumerator GetEnumerator() { return InnerList.GetEnumerator(); }
57 // Protected Instance Constructors
58 protected ReadOnlyCollectionBase() {
59 this.list = new ArrayList();
62 // Protected Instance Properties
63 protected ArrayList InnerList {get { return this.list; } }
65 // ICollection methods
66 void ICollection.CopyTo(Array array, int index) {
67 lock (InnerList) { InnerList.CopyTo(array, index); }
69 object ICollection.SyncRoot {
70 get { return InnerList.SyncRoot; }
72 bool ICollection.IsSynchronized {
73 get { return InnerList.IsSynchronized; }