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 {
40 public abstract class ReadOnlyCollectionBase : ICollection, IEnumerable {
42 // private instance properties
43 private ArrayList list;
45 // public instance properties
46 public virtual int Count { get { return InnerList.Count; } }
48 // Public Instance Methods
49 public virtual IEnumerator GetEnumerator() { return InnerList.GetEnumerator(); }
51 // Protected Instance Constructors
52 protected ReadOnlyCollectionBase() {
53 this.list = new ArrayList();
56 // Protected Instance Properties
57 protected ArrayList InnerList {get { return this.list; } }
59 // ICollection/IEnumerable methods
60 IEnumerator IEnumerable.GetEnumerator() { return GetEnumerator(); }
62 void ICollection.CopyTo(Array array, int index) {
63 lock (InnerList) { InnerList.CopyTo(array, index); }
65 object ICollection.SyncRoot {
66 get { return InnerList.SyncRoot; }
68 bool ICollection.IsSynchronized {
69 get { return InnerList.IsSynchronized; }