#19924: Moving FormValueRequiredAttribute to Orchard.Mvc, removing duplicate class declarations and updating usages.

Work Item: 19924

--HG--
branch : 1.x

src/Orchard.Web/Modules/Orchard.CustomForms/Controllers/AdminController.cs

@@ -9,6 +9,7 @@ using Orchard.CustomForms.Models;
 using Orchard.CustomForms.ViewModels;
 using Orchard.DisplayManagement;
 using Orchard.Localization;
+using Orchard.Mvc;
 using Orchard.Security;
 using System;
 using Orchard.Settings;
@@ -80,7 +81,7 @@ namespace Orchard.CustomForms.Controllers {
         }
 
         [HttpPost]
-        [Core.Contents.Controllers.FormValueRequired("submit.BulkEdit")]
+        [FormValueRequired("submit.BulkEdit")]
         public ActionResult Index(FormCollection input) {
             if (!Services.Authorizer.Authorize(Permissions.ManageForms, T("Not authorized to manage customForm")))
                 return new HttpUnauthorizedResult();

src/Orchard.Web/Modules/Orchard.CustomForms/Controllers/ItemController.cs

@@ -12,6 +12,7 @@ using Orchard.Data;
 using Orchard.DisplayManagement;
 using Orchard.Localization;
 using Orchard.Logging;
+using Orchard.Mvc;
 using Orchard.Mvc.Extensions;
 using Orchard.Themes;
 using Orchard.Tokens;
@@ -181,17 +182,4 @@ namespace Orchard.CustomForms.Controllers {
             ModelState.AddModelError(key, errorMessage.ToString());
         }
     }
-
-    public class FormValueRequiredAttribute : ActionMethodSelectorAttribute {
-        private readonly string _submitButtonName;
-
-        public FormValueRequiredAttribute(string submitButtonName) {
-            _submitButtonName = submitButtonName;
-        }
-
-        public override bool IsValidForRequest(ControllerContext controllerContext, MethodInfo methodInfo) {
-            var value = controllerContext.HttpContext.Request.Form[_submitButtonName];
-            return !string.IsNullOrEmpty(value);
-        }
-    }
 }