Imported Upstream version 3.6.0

Former-commit-id: da6be194a6b1221998fc28233f2503bd61dd9d14

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

@@ -0,0 +1,51 @@
+namespace System.Web.Mvc {
+    using System;
+    using System.Collections.Generic;
+    using System.Collections.ObjectModel;
+    using System.Linq;
+
+    public class ModelValidatorProviderCollection : Collection<ModelValidatorProvider> {
+        private IResolver<IEnumerable<ModelValidatorProvider>> _serviceResolver;
+
+        public ModelValidatorProviderCollection() {
+            _serviceResolver = new MultiServiceResolver<ModelValidatorProvider>(() => Items);
+        }
+
+        public ModelValidatorProviderCollection(IList<ModelValidatorProvider> list)
+            : base(list) {
+            _serviceResolver = new MultiServiceResolver<ModelValidatorProvider>(() => Items);
+        }
+
+        internal ModelValidatorProviderCollection(IResolver<IEnumerable<ModelValidatorProvider>> serviceResolver, params ModelValidatorProvider[] validatorProvidors)
+            : base(validatorProvidors) {
+            _serviceResolver = serviceResolver ??  new MultiServiceResolver<ModelValidatorProvider>(
+                ()=>Items
+                );
+        }
+
+        private IEnumerable<ModelValidatorProvider> CombinedItems {
+            get {
+                return _serviceResolver.Current;
+            }
+        }
+
+        protected override void InsertItem(int index, ModelValidatorProvider item) {
+            if (item == null) {
+                throw new ArgumentNullException("item");
+            }
+            base.InsertItem(index, item);
+        }
+
+        protected override void SetItem(int index, ModelValidatorProvider item) {
+            if (item == null) {
+                throw new ArgumentNullException("item");
+            }
+            base.SetItem(index, item);
+        }
+
+        public IEnumerable<ModelValidator> GetValidators(ModelMetadata metadata, ControllerContext context) {
+            return CombinedItems.SelectMany(provider => provider.GetValidators(metadata, context));
+        }
+
+    }
+}