1 files changed, 59 insertions, 0 deletions
diff --git a/src/System.Web.Mvc/AssociatedValidatorProvider.cs b/src/System.Web.Mvc/AssociatedValidatorProvider.cs
new file mode 100644
index 00000000..b91fade1
--- /dev/null
+++ b/src/System.Web.Mvc/AssociatedValidatorProvider.cs
@@ -0,0 +1,59 @@
+using System.Collections.Generic;
+using System.ComponentModel;
+using System.Globalization;
+using System.Linq;
+using System.Web.Mvc.Properties;
+
+namespace System.Web.Mvc
+{
+    public abstract class AssociatedValidatorProvider : ModelValidatorProvider
+    {
+        protected virtual ICustomTypeDescriptor GetTypeDescriptor(Type type)
+        {
+            return TypeDescriptorHelper.Get(type);
+        }
+
+        public sealed override IEnumerable<ModelValidator> GetValidators(ModelMetadata metadata, ControllerContext context)
+        {
+            if (metadata == null)
+            {
+                throw new ArgumentNullException("metadata");
+            }
+            if (context == null)
+            {
+                throw new ArgumentNullException("context");
+            }
+
+            if (metadata.ContainerType != null && !String.IsNullOrEmpty(metadata.PropertyName))
+            {
+                return GetValidatorsForProperty(metadata, context);
+            }
+
+            return GetValidatorsForType(metadata, context);
+        }
+
+        protected abstract IEnumerable<ModelValidator> GetValidators(ModelMetadata metadata, ControllerContext context, IEnumerable<Attribute> attributes);
+
+        private IEnumerable<ModelValidator> GetValidatorsForProperty(ModelMetadata metadata, ControllerContext context)
+        {
+            ICustomTypeDescriptor typeDescriptor = GetTypeDescriptor(metadata.ContainerType);
+            PropertyDescriptor property = typeDescriptor.GetProperties().Find(metadata.PropertyName, true);
+            if (property == null)
+            {
+                throw new ArgumentException(
+                    String.Format(
+                        CultureInfo.CurrentCulture,
+                        MvcResources.Common_PropertyNotFound,
+                        metadata.ContainerType.FullName, metadata.PropertyName),
+                    "metadata");
+            }
+
+            return GetValidators(metadata, context, property.Attributes.OfType<Attribute>());
+        }
+
+        private IEnumerable<ModelValidator> GetValidatorsForType(ModelMetadata metadata, ControllerContext context)
+        {
+            return GetValidators(metadata, context, GetTypeDescriptor(metadata.ModelType).GetAttributes().Cast<Attribute>());
+        }
+    }
+}