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//
// System.Web.UI/KeyedList.cs
//
// Author: Todd Berman <tberman@gentoo.org>
//
// (C) 2003 Todd Berman
#if NET_1_2
using System.Collections;
using System.Collections.Specialized;
namespace System.Web.UI
{
public class KeyedList : IOrderedDictionary, IStateManager
{
private Hashtable objectTable = new Hashtable ();
private 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);
objectList.RemoveAt (IndexOf (key));
}
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);
}
IEnumerator IEnumerable.GetEnumerator ()
{
return new KeyedListEnumerator (objectList);
}
void IStateManager.LoadViewState (object state)
{
if (state != null)
{
object[] states = (object[]) state;
if (states[0] != null) {
objectList = (ArrayList) states[0];
for (int i = 0; i < objectList.Count; i++)
{
DictionaryEntry pair = (DictionaryEntry) objectList[i];
objectTable.Add (pair.Key, pair.Value);
}
}
}
}
object IStateManager.SaveViewState ()
{
object[] ret = new object[] { objectList };
if (ret[0] == null)
return null;
return ret;
}
void IStateManager.TrackViewState ()
{
trackViewState = true;
}
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; }
}
private bool trackViewState;
bool IStateManager.IsTrackingViewState {
get { return trackViewState; }
}
private int IndexOf (object key)
{
for (int i = 0; i < objectList.Count; i++)
{
if (((DictionaryEntry) objectList[i]).Key.Equals (key))
{
return i;
}
}
return -1;
}
}
}
#endif
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