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/* ****************************************************************************
*
* Copyright (c) Microsoft Corporation. All rights reserved.
*
* This software is subject to the Microsoft Public License (Ms-PL).
* A copy of the license can be found in the license.htm file included
* in this distribution.
*
* You must not remove this notice, or any other, from this software.
*
* ***************************************************************************/
namespace System.Web.Mvc {
using System;
using System.Collections.Generic;
using System.Collections.ObjectModel;
using System.Linq;
public class ValueProviderCollection : Collection<IValueProvider>, IValueProvider {
public ValueProviderCollection() {
}
public ValueProviderCollection(IList<IValueProvider> list)
: base(list) {
}
public virtual bool ContainsPrefix(string prefix) {
return this.Any(vp => vp.ContainsPrefix(prefix));
}
public virtual ValueProviderResult GetValue(string key) {
return (from provider in this
let result = provider.GetValue(key)
where result != null
select result).FirstOrDefault();
}
protected override void InsertItem(int index, IValueProvider item) {
if (item == null) {
throw new ArgumentNullException("item");
}
base.InsertItem(index, item);
}
protected override void SetItem(int index, IValueProvider item) {
if (item == null) {
throw new ArgumentNullException("item");
}
base.SetItem(index, item);
}
}
}
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