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// -*- Mode: csharp; tab-width: 8; indent-tabs-mode: t; c-basic-offset: 8 -*-
//
// System.Collections.ObjectModel.ReadOnlyCollection
//
// Author:
// Zoltan Varga (vargaz@gmail.com)
// David Waite (mass@akuma.org)
//
// (C) 2005 Novell, Inc.
// (C) 2005 David Waite
//
//
// Copyright (C) 2005 Novell, Inc (http://www.novell.com)
// Copyright (C) 2005 David Waite
//
// Permission is hereby granted, free of charge, to any person obtaining
// a copy of this software and associated documentation files (the
// "Software"), to deal in the Software without restriction, including
// without limitation the rights to use, copy, modify, merge, publish,
// distribute, sublicense, and/or sell copies of the Software, and to
// permit persons to whom the Software is furnished to do so, subject to
// the following conditions:
//
// The above copyright notice and this permission notice shall be
// included in all copies or substantial portions of the Software.
//
// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
// EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
// MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
// NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE
// LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION
// OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION
// WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
//
#if NET_2_0
using System;
using System.Collections.Generic;
using System.Runtime.InteropServices;
namespace System.Collections.ObjectModel
{
[ComVisible (false)]
[Serializable]
public class ReadOnlyCollection <T> : IList <T>, ICollection <T>, IEnumerable <T>, IList, ICollection, IEnumerable
{
IList <T> list;
object syncRoot;
public ReadOnlyCollection (IList <T> list)
{
if (list == null)
throw new ArgumentNullException ("list");
this.list = list;
ICollection c = list as ICollection;
syncRoot = (c != null) ? c.SyncRoot : new object ();
}
void ICollection<T>.Add (T item)
{
throw new NotSupportedException ();
}
void ICollection<T>.Clear ()
{
throw new NotSupportedException ();
}
public bool Contains (T item)
{
return list.Contains (item);
}
public void CopyTo (T [] array, int index)
{
list.CopyTo (array, index);
}
public IEnumerator <T> GetEnumerator ()
{
return list.GetEnumerator ();
}
public int IndexOf (T item)
{
return list.IndexOf (item);
}
void IList<T>.Insert (int index, T item)
{
throw new NotSupportedException ();
}
bool ICollection<T>.Remove (T item)
{
throw new NotSupportedException ();
}
void IList<T>.RemoveAt (int index)
{
throw new NotSupportedException ();
}
public int Count {
get { return list.Count; }
}
public T this [int index] {
get { return list [index]; }
}
T IList<T>.this [int index] {
set { throw new NotSupportedException (); }
}
bool ICollection<T>.IsReadOnly {
get { return true; }
}
#region Not generic interface implementations
void ICollection.CopyTo (Array array, int arrayIndex)
{
T [] target = array as T [];
if (target == null)
throw new ArgumentException ("array");
list.CopyTo (target, arrayIndex);
}
IEnumerator IEnumerable.GetEnumerator ()
{
return ((IEnumerable) list).GetEnumerator ();
}
int IList.Add (object item)
{
throw new NotSupportedException ();
}
void IList.Clear ()
{
throw new NotSupportedException ();
}
bool IList.Contains (object item)
{
if (Collection <T>.IsValidItem (item))
return list.Contains ((T) item);
return false;
}
int IList.IndexOf (object item)
{
if (Collection <T>.IsValidItem (item))
return list.IndexOf ((T) item);
return -1;
}
void IList.Insert (int index, object item)
{
throw new NotSupportedException ();
}
void IList.Remove (object item)
{
throw new NotSupportedException ();
}
void IList.RemoveAt (int index)
{
throw new NotSupportedException ();
}
bool ICollection.IsSynchronized {
get { return Collection <T>.IsSynchronized (list); }
}
object ICollection.SyncRoot {
get { return syncRoot; }
}
bool IList.IsFixedSize {
get { return Collection <T>.IsFixedSize (list); }
}
bool IList.IsReadOnly {
get { return true; }
}
object IList.this [int index] {
get { return list [index]; }
set { throw new NotSupportedException (); }
}
#endregion
}
}
#endif
|
