Feedback: Make common base class for all contexts and all of them expose FilterItem collection

ExtensionMethod will now apply to the base FilterContext class

samples/MvcSample.Web/Filters/BlockAnonymous.cs

@@ -4,7 +4,7 @@ using Microsoft.AspNet.Mvc;
 
 namespace MvcSample.Web.Filters
 {
-    public class BlockAnonynous : AuthorizationFilterAttribute
+    public class BlockAnonymous : AuthorizationFilterAttribute
     {
         public override async Task Invoke(AuthorizationFilterContext context, Func<Task> next)
         {

samples/MvcSample.Web/Filters/InspectResultPageAttribute.cs

@@ -9,11 +9,11 @@ namespace MvcSample.Web.Filters
     {
         public async override Task Invoke(ActionResultFilterContext context, Func<Task> next)
         {
-            ViewResult viewResult = context.Result as ViewResult;
+            var viewResult = context.ActionResult as ViewResult;
 
             if (viewResult != null)
             {
-                User user = viewResult.ViewData.Model as User;
+                var user = viewResult.ViewData.Model as User;
 
                 if (user != null)
                 {

samples/MvcSample.Web/FiltersController.cs

@@ -9,7 +9,7 @@ namespace MvcSample.Web
     [PassThrough(Order = 0)]
     [PassThrough(Order = 2)]
     [InspectResultPage]
-    [BlockAnonynous]
+    [BlockAnonymous]
     [UserNameProvider(Order = -1)]
     public class FiltersController : Controller
     {

src/Microsoft.AspNet.Mvc.Core/Extensions/FilterContextExtensions.cs

@@ -3,9 +3,9 @@ using Microsoft.AspNet.Mvc.Filters;
 
 namespace Microsoft.AspNet.Mvc
 {
-    public static class AuthorizationFilterContextExtensions
+    public static class FilterContextExtensions
     {
-        public static bool HasAllowAnonymous([NotNull] this AuthorizationFilterContext context)
+        public static bool HasAllowAnonymous([NotNull] this FilterContext context)
         {
             return context.FilterItems.Any(item => item.Filter is IAllowAnonymous);
         }

src/Microsoft.AspNet.Mvc.Core/Filters/ActionFilterContext.cs

@@ -1,21 +1,18 @@
-using System;
-using System.Collections.Generic;
+using System.Collections.Generic;
+using Microsoft.AspNet.Mvc.Filters;
 
 namespace Microsoft.AspNet.Mvc
 {
-    public class ActionFilterContext
+    public class ActionFilterContext : FilterContext
     {
-        public ActionFilterContext(ActionContext actionContext,
-                                   IDictionary<string, object> actionArguments)
+        public ActionFilterContext([NotNull] ActionContext actionContext,
+                                   [NotNull] IReadOnlyList<FilterItem> filterItems,
+                                   [NotNull] IDictionary<string, object> actionArguments)
+            : base(actionContext, filterItems)
         {
-            ActionContext = actionContext;
             ActionArguments = actionArguments;
         }
 
         public virtual IDictionary<string, object> ActionArguments { get; private set; }
-
-        public virtual ActionContext ActionContext { get; private set; }
-
-        public virtual IActionResult Result { get; set; }
     }
 }

src/Microsoft.AspNet.Mvc.Core/Filters/ActionFilterEndPoint.cs

@@ -31,7 +31,7 @@ namespace Microsoft.AspNet.Mvc.Filters
                                                             context.ActionArguments);
 
             var underlyingReturnType = TypeHelper.GetTaskInnerTypeOrNull(actionMethodInfo.ReturnType) ?? actionMethodInfo.ReturnType;
-            context.Result = _actionResultFactory.CreateActionResult(
+            context.ActionResult = _actionResultFactory.CreateActionResult(
                                                             underlyingReturnType,
                                                             actionReturnValue,
                                                             context.ActionContext);

src/Microsoft.AspNet.Mvc.Core/Filters/ActionResultFilterContext.cs

@@ -1,15 +1,14 @@
-namespace Microsoft.AspNet.Mvc
+using System.Collections.Generic;
+using Microsoft.AspNet.Mvc.Filters;
+
+namespace Microsoft.AspNet.Mvc
 {
-    public class ActionResultFilterContext
+    public class ActionResultFilterContext : FilterContext
     {
-        public ActionResultFilterContext(ActionContext actionContext, IActionResult initialResult)
+        public ActionResultFilterContext(ActionContext actionContext, IReadOnlyList<FilterItem> filterItems, IActionResult initialResult)
+            : base(actionContext, filterItems)
         {
-            ActionContext = actionContext;
-            Result = initialResult;
+            ActionResult = initialResult;
         }
-
-        public ActionContext ActionContext { get; private set; }
-
-        public IActionResult Result { get; set; }
     }
 }

src/Microsoft.AspNet.Mvc.Core/Filters/ActionResultFilterEndPoint.cs

@@ -9,12 +9,12 @@ namespace Microsoft.AspNet.Mvc.Filters
         public async Task Invoke(ActionResultFilterContext context, Func<Task> next)
         {
             // result can get cleared at any point in the pipeline
-            if (context.Result == null)
+            if (context.ActionResult == null)
             {
-                context.Result = new EmptyResult();
+                context.ActionResult = new EmptyResult();
             }
 
-            await context.Result.ExecuteResultAsync(context.ActionContext);
+            await context.ActionResult.ExecuteResultAsync(context.ActionContext);
         }
     }
 }

src/Microsoft.AspNet.Mvc.Core/Filters/AuthorizationFilterContext.cs

@@ -1,25 +1,21 @@
 using System.Collections.Generic;
+using Microsoft.AspNet.Mvc.Filters;
 
 namespace Microsoft.AspNet.Mvc
 {
-    public class AuthorizationFilterContext
+    public class AuthorizationFilterContext : FilterContext
     {
         private IActionResult _actionResult;
 
         public AuthorizationFilterContext([NotNull] ActionContext actionContext, [NotNull] IReadOnlyList<FilterItem> filterItems)
+            : base(actionContext, filterItems)
         {
-            ActionContext = actionContext;
-            FilterItems = filterItems;
         }
 
         public bool HasFailed { get; private set; }
 
-        public ActionContext ActionContext { get; private set; }
-
-        public IReadOnlyList<FilterItem> FilterItems { get; private set; }
-
         // Result
-        public IActionResult ActionResult
+        public override IActionResult ActionResult
         {
             get { return _actionResult; }
             set

src/Microsoft.AspNet.Mvc.Core/Filters/FilterContext.cs

@@ -0,0 +1,19 @@
+using System.Collections.Generic;
+
+namespace Microsoft.AspNet.Mvc.Filters
+{
+    public class FilterContext
+    {
+        public FilterContext([NotNull] ActionContext actionContext, [NotNull] IReadOnlyList<FilterItem> filterItems)
+        {
+            ActionContext = actionContext;
+            FilterItems = filterItems;
+        }
+
+        public ActionContext ActionContext { get; private set; }
+        public IReadOnlyList<FilterItem> FilterItems { get; private set; }
+
+        // Result
+        public virtual IActionResult ActionResult { get; set; }
+    }
+}

src/Microsoft.AspNet.Mvc.Core/ReflectedActionInvoker.cs

@@ -47,6 +47,7 @@ namespace Microsoft.AspNet.Mvc
                                           Select(fd => new FilterItem(fd)).ToList());
 
             _filterProvider.Invoke(filterProviderContext);
+            var filterMetaItems = filterProviderContext.Result.ToArray();
 
             PreArrangeFiltersInPipeline(filterProviderContext);
 
@@ -72,7 +73,7 @@ namespace Microsoft.AspNet.Mvc
                         var authZEndPoint = new AuthorizationFilterEndPoint();
                         _authorizationFilters.Add(authZEndPoint);
 
-                        var authZContext = new AuthorizationFilterContext(_actionContext, filterProviderContext.Result.ToArray());
+                        var authZContext = new AuthorizationFilterContext(_actionContext, filterMetaItems);
                         var authZPipeline = new FilterPipelineBuilder<AuthorizationFilterContext>(_authorizationFilters, authZContext);
 
                         await authZPipeline.InvokeAsync();
@@ -99,6 +100,7 @@ namespace Microsoft.AspNet.Mvc
                         var parameterValues = await GetParameterValues(modelState);
 
                         var actionFilterContext = new ActionFilterContext(_actionContext,
+                                                                          filterMetaItems,
                                                                           parameterValues);
 
                         var actionEndPoint = new ReflectedActionFilterEndPoint(_actionResultFactory, controller);
@@ -109,12 +111,12 @@ namespace Microsoft.AspNet.Mvc
 
                         await actionFilterPipeline.InvokeAsync();
 
-                        actionResult = actionFilterContext.Result;
+                        actionResult = actionFilterContext.ActionResult;
                     }
                 }
             }
 
-            var actionResultFilterContext = new ActionResultFilterContext(_actionContext, actionResult);
+            var actionResultFilterContext = new ActionResultFilterContext(_actionContext, filterMetaItems, actionResult);
             var actionResultFilterEndPoint = new ActionResultFilterEndPoint();
             _actionResultFilters.Add(actionResultFilterEndPoint);