Imported Upstream version 3.6.0

Former-commit-id: da6be194a6b1221998fc28233f2503bd61dd9d14

mcs/class/System.Web.Mvc3/Mvc/ValueProviderFactoryCollection.cs

@@ -0,0 +1,51 @@
+namespace System.Web.Mvc {
+    using System;
+    using System.Collections.Generic;
+    using System.Collections.ObjectModel;
+    using System.Linq;
+
+    public class ValueProviderFactoryCollection : Collection<ValueProviderFactory> {
+        private IResolver<IEnumerable<ValueProviderFactory>> _serviceResolver;
+
+        public ValueProviderFactoryCollection() {
+            _serviceResolver = new MultiServiceResolver<ValueProviderFactory>(() => Items);
+        }
+
+        public ValueProviderFactoryCollection(IList<ValueProviderFactory> list)
+            : base(list) {
+            _serviceResolver = new MultiServiceResolver<ValueProviderFactory>(() => Items);
+        }
+
+        internal ValueProviderFactoryCollection(IResolver<IEnumerable<ValueProviderFactory>> serviceResolver, params ValueProviderFactory[] valueProviderFactories)
+            : base(valueProviderFactories) {
+            _serviceResolver = serviceResolver ?? new MultiServiceResolver<ValueProviderFactory>(
+                   () => Items
+                   );
+        }
+
+        public IValueProvider GetValueProvider(ControllerContext controllerContext) {
+            var valueProviders = from factory in _serviceResolver.Current
+                                 let valueProvider = factory.GetValueProvider(controllerContext)
+                                 where valueProvider != null
+                                 select valueProvider;
+
+            return new ValueProviderCollection(valueProviders.ToList());
+        }
+
+
+        protected override void InsertItem(int index, ValueProviderFactory item) {
+            if (item == null) {
+                throw new ArgumentNullException("item");
+            }
+            base.InsertItem(index, item);
+        }
+
+        protected override void SetItem(int index, ValueProviderFactory item) {
+            if (item == null) {
+                throw new ArgumentNullException("item");
+            }
+            base.SetItem(index, item);
+        }
+
+    }
+}