//
// System.Web.UI.WebControls.DataKey.cs
//
// Authors:
// Lluis Sanchez Gual (lluis@novell.com)
//
// (C) 2005 Novell, Inc (http://www.novell.com)
//
//
// 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;
using System.Collections.Specialized;
namespace System.Web.UI.WebControls{
public class DataKey : IStateManager
{
IOrderedDictionary keyTable;
string[] keyNames;
bool trackViewState;
IOrderedDictionary readonlyKeyTable;
public DataKey (IOrderedDictionary keyTable)
{
this.keyTable = keyTable;
}
public DataKey (IOrderedDictionary keyTable, string[] keyNames)
{
this.keyTable = keyTable;
this.keyNames = keyNames;
}
public virtual object this [int index] {
get { return keyTable [index]; }
}
public virtual object this [string name] {
get { return keyTable [name]; }
}
public virtual object Value {
get {
if (keyTable.Count == 0)
return null;
return keyTable [0];
}
}
public virtual IOrderedDictionary Values {
get {
if (readonlyKeyTable == null) {
if (keyTable is OrderedDictionary)
readonlyKeyTable = ((OrderedDictionary)keyTable).AsReadOnly ();
else
readonlyKeyTable = keyTable;
}
return readonlyKeyTable;
}
}
protected virtual void LoadViewState (object savedState)
{
if (savedState is Pair) {
Pair p = (Pair) savedState;
object[] akeys = (object[]) p.First;
object[] avals = (object[]) p.Second;
for (int n=0; n<akeys.Length; n++) {
keyTable [akeys[n]] = avals [n];
}
} else if (savedState is object[]) {
object[] avals = (object[]) savedState;
for (int n=0; n<avals.Length; n++)
keyTable [keyNames[n]] = avals [n];
}
}
protected virtual object SaveViewState ()
{
if (keyTable.Count == 0) return null;
if (keyNames != null) {
object[] avals = new object [keyTable.Count];
int n=0;
foreach (object val in keyTable.Values)
avals [n++] = val;
return avals;
} else {
object[] avals = new object [keyTable.Count];
object[] akeys = new object [keyTable.Count];
int n=0;
foreach (DictionaryEntry de in keyTable) {
akeys [n] = de.Key;
avals [n++] = de.Value;
}
return new Pair (akeys, avals);
}
}
protected virtual void TrackViewState ()
{
trackViewState = true;
}
protected virtual bool IsTrackingViewState {
get { return trackViewState; }
}
void IStateManager.LoadViewState (object savedState)
{
LoadViewState (savedState);
}
object IStateManager.SaveViewState ()
{
return SaveViewState ();
}
void IStateManager.TrackViewState ()
{
TrackViewState ();
}
bool IStateManager.IsTrackingViewState {
get { return IsTrackingViewState; }
}
}
}
#endif
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