#region License, Terms and Conditions
//
// Jayrock - JSON and JSON-RPC for Microsoft .NET Framework and Mono
// Written by Atif Aziz (atif.aziz@skybow.com)
// Copyright (c) 2005 Atif Aziz. All rights reserved.
//
// This library is free software; you can redistribute it and/or modify it under
// the terms of the GNU Lesser General Public License as published by the Free
// Software Foundation; either version 2.1 of the License, or (at your option)
// any later version.
//
// This library is distributed in the hope that it will be useful, but WITHOUT
// ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS
// FOR A PARTICULAR PURPOSE. See the GNU Lesser General Public License for more
// details.
//
// You should have received a copy of the GNU Lesser General Public License
// along with this library; if not, write to the Free Software Foundation, Inc.,
// 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
//
#endregion
namespace Jayrock.Collections
{
#region Imports
using System;
using System.Collections;
#endregion
[ Serializable ]
public abstract class KeyedCollection : CollectionBase
{
private Hashtable _valueByKey; // TODO: Mark [ NonSerializable ] and implement IDeserializationCallback
protected KeyedCollection()
{
_valueByKey = new Hashtable();
}
private Hashtable ValueByKey
{
get { return _valueByKey; }
}
protected void Add(object value)
{
List.Add(value);
}
protected object GetByKey(object key)
{
if (key == null)
throw new ArgumentNullException("key");
return ValueByKey[key];
}
protected bool Contains(object key)
{
if (key == null)
throw new ArgumentNullException("key");
return ValueByKey.ContainsKey(key);
}
protected bool Remove(object key)
{
if (key == null)
throw new ArgumentNullException("key");
object value = GetByKey(key);
if (value == null)
return false;
List.Remove(value);
return true;
}
protected override void OnValidate(object value)
{
base.OnValidate(value);
if (KeyFromValue(value) == null)
throw new ArgumentException("value");
}
protected override void OnInsertComplete(int index, object value)
{
ValueByKey.Add(KeyFromValue(value), value);
base.OnInsertComplete(index, value);
}
protected override void OnRemoveComplete(int index, object value)
{
ValueByKey.Remove(KeyFromValue(value));
base.OnRemoveComplete(index, value);
}
protected override void OnSetComplete(int index, object oldValue, object newValue)
{
ValueByKey.Remove(KeyFromValue(oldValue));
ValueByKey.Add(KeyFromValue(newValue), newValue);
base.OnSetComplete(index, oldValue, newValue);
}
protected override void OnClearComplete()
{
ValueByKey.Clear();
base.OnClearComplete();
}
protected void ListKeysByIndex(Array keys)
{
if (keys == null)
throw new ArgumentNullException("keys");
if (keys.Rank != 1)
throw new ArgumentException("keys");
for (int i = 0; i < Math.Min(Count, keys.Length); i++)
keys.SetValue(KeyFromValue(InnerList[i]), i);
}
protected abstract object KeyFromValue(object value);
}
}