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namespace System.Web.Mvc {
using System.Collections.Generic;
using System.Collections.ObjectModel;
using System.Linq;
public class ModelBinderProviderCollection : Collection<IModelBinderProvider> {
private IResolver<IEnumerable<IModelBinderProvider>> _serviceResolver;
public ModelBinderProviderCollection() {
_serviceResolver = new MultiServiceResolver<IModelBinderProvider>(() => Items);
}
public ModelBinderProviderCollection(IList<IModelBinderProvider> list)
: base(list) {
_serviceResolver = new MultiServiceResolver<IModelBinderProvider>(() => Items);
}
internal ModelBinderProviderCollection(IResolver<IEnumerable<IModelBinderProvider>> resolver, params IModelBinderProvider[] providers)
: base(providers) {
_serviceResolver = resolver ?? new MultiServiceResolver<IModelBinderProvider>(() => Items);
}
private IEnumerable<IModelBinderProvider> CombinedItems {
get {
return _serviceResolver.Current;
}
}
protected override void InsertItem(int index, IModelBinderProvider item) {
if (item == null) {
throw new ArgumentNullException("item");
}
base.InsertItem(index, item);
}
protected override void SetItem(int index, IModelBinderProvider item) {
if (item == null) {
throw new ArgumentNullException("item");
}
base.SetItem(index, item);
}
public IModelBinder GetBinder(Type modelType) {
if (modelType == null) {
throw new ArgumentNullException("modelType");
}
var modelBinders = from providers in CombinedItems
let modelBinder = providers.GetBinder(modelType)
where modelBinder != null
select modelBinder;
return modelBinders.FirstOrDefault();
}
}
}
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