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//
// System.Web.UI/KeyedList.cs
//
// Author: Todd Berman <tberman@gentoo.org>
//
// (C) 2003 Todd Berman
//
// 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.
//
using System.Collections;
using System.Collections.Specialized;
namespace System.Web.UI
{
class KeyedList : IOrderedDictionary
{
Hashtable objectTable = new Hashtable ();
ArrayList objectList = new ArrayList ();
public void Add (object key, object value)
{
objectTable.Add (key, value);
objectList.Add (new DictionaryEntry (key, value));
}
public void Clear ()
{
objectTable.Clear ();
objectList.Clear ();
}
public bool Contains (object key)
{
return objectTable.Contains (key);
}
public void CopyTo (Array array, int idx)
{
objectTable.CopyTo (array, idx);
}
public void Insert (int idx, object key, object value)
{
if (idx > Count)
throw new ArgumentOutOfRangeException ("index");
objectTable.Add (key, value);
objectList.Insert (idx, new DictionaryEntry (key, value));
}
public void Remove (object key)
{
objectTable.Remove (key);
int index = IndexOf (key);
if (index >= 0)
objectList.RemoveAt (index);
}
public void RemoveAt (int idx)
{
if (idx >= Count)
throw new ArgumentOutOfRangeException ("index");
objectTable.Remove ( ((DictionaryEntry)objectList[idx]).Key );
objectList.RemoveAt (idx);
}
IDictionaryEnumerator IDictionary.GetEnumerator ()
{
return new KeyedListEnumerator (objectList);
}
IDictionaryEnumerator IOrderedDictionary.GetEnumerator ()
{
return new KeyedListEnumerator (objectList);
}
IEnumerator IEnumerable.GetEnumerator ()
{
return new KeyedListEnumerator (objectList);
}
public int Count {
get { return objectList.Count; }
}
public bool IsFixedSize {
get { return false; }
}
public bool IsReadOnly {
get { return false; }
}
public bool IsSynchronized {
get { return false; }
}
public object this[int idx] {
get { return ((DictionaryEntry) objectList[idx]).Value; }
set {
if (idx < 0 || idx >= Count)
throw new ArgumentOutOfRangeException ("index");
object key = ((DictionaryEntry) objectList[idx]).Key;
objectList[idx] = new DictionaryEntry (key, value);
objectTable[key] = value;
}
}
public object this[object key] {
get { return objectTable[key]; }
set {
if (objectTable.Contains (key))
{
objectTable[key] = value;
objectTable[IndexOf (key)] = new DictionaryEntry (key, value);
return;
}
Add (key, value);
}
}
public ICollection Keys {
get {
ArrayList retList = new ArrayList ();
for (int i = 0; i < objectList.Count; i++)
{
retList.Add ( ((DictionaryEntry)objectList[i]).Key );
}
return retList;
}
}
public ICollection Values {
get {
ArrayList retList = new ArrayList ();
for (int i = 0; i < objectList.Count; i++)
{
retList.Add ( ((DictionaryEntry)objectList[i]).Value );
}
return retList;
}
}
public object SyncRoot {
get { return this; }
}
int IndexOf (object key)
{
for (int i = 0; i < objectList.Count; i++)
{
if (((DictionaryEntry) objectList[i]).Key.Equals (key))
{
return i;
}
}
return -1;
}
}
}
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