1 files changed, 180 insertions, 0 deletions
diff --git a/src/System.Web.Mvc/Html/FormExtensions.cs b/src/System.Web.Mvc/Html/FormExtensions.cs
new file mode 100644
index 00000000..4a6780cb
--- /dev/null
+++ b/src/System.Web.Mvc/Html/FormExtensions.cs
@@ -0,0 +1,180 @@
+using System.Collections.Generic;
+using System.Diagnostics.CodeAnalysis;
+using System.Web.Routing;
+
+namespace System.Web.Mvc.Html
+{
+    public static class FormExtensions
+    {
+        public static MvcForm BeginForm(this HtmlHelper htmlHelper)
+        {
+            // generates <form action="{current url}" method="post">...</form>
+            string formAction = htmlHelper.ViewContext.HttpContext.Request.RawUrl;
+            return FormHelper(htmlHelper, formAction, FormMethod.Post, new RouteValueDictionary());
+        }
+
+        public static MvcForm BeginForm(this HtmlHelper htmlHelper, object routeValues)
+        {
+            return BeginForm(htmlHelper, null, null, new RouteValueDictionary(routeValues), FormMethod.Post, new RouteValueDictionary());
+        }
+
+        public static MvcForm BeginForm(this HtmlHelper htmlHelper, RouteValueDictionary routeValues)
+        {
+            return BeginForm(htmlHelper, null, null, routeValues, FormMethod.Post, new RouteValueDictionary());
+        }
+
+        public static MvcForm BeginForm(this HtmlHelper htmlHelper, string actionName, string controllerName)
+        {
+            return BeginForm(htmlHelper, actionName, controllerName, new RouteValueDictionary(), FormMethod.Post, new RouteValueDictionary());
+        }
+
+        public static MvcForm BeginForm(this HtmlHelper htmlHelper, string actionName, string controllerName, object routeValues)
+        {
+            return BeginForm(htmlHelper, actionName, controllerName, new RouteValueDictionary(routeValues), FormMethod.Post, new RouteValueDictionary());
+        }
+
+        public static MvcForm BeginForm(this HtmlHelper htmlHelper, string actionName, string controllerName, RouteValueDictionary routeValues)
+        {
+            return BeginForm(htmlHelper, actionName, controllerName, routeValues, FormMethod.Post, new RouteValueDictionary());
+        }
+
+        public static MvcForm BeginForm(this HtmlHelper htmlHelper, string actionName, string controllerName, FormMethod method)
+        {
+            return BeginForm(htmlHelper, actionName, controllerName, new RouteValueDictionary(), method, new RouteValueDictionary());
+        }
+
+        public static MvcForm BeginForm(this HtmlHelper htmlHelper, string actionName, string controllerName, object routeValues, FormMethod method)
+        {
+            return BeginForm(htmlHelper, actionName, controllerName, new RouteValueDictionary(routeValues), method, new RouteValueDictionary());
+        }
+
+        public static MvcForm BeginForm(this HtmlHelper htmlHelper, string actionName, string controllerName, RouteValueDictionary routeValues, FormMethod method)
+        {
+            return BeginForm(htmlHelper, actionName, controllerName, routeValues, method, new RouteValueDictionary());
+        }
+
+        public static MvcForm BeginForm(this HtmlHelper htmlHelper, string actionName, string controllerName, FormMethod method, object htmlAttributes)
+        {
+            return BeginForm(htmlHelper, actionName, controllerName, new RouteValueDictionary(), method, HtmlHelper.AnonymousObjectToHtmlAttributes(htmlAttributes));
+        }
+
+        public static MvcForm BeginForm(this HtmlHelper htmlHelper, string actionName, string controllerName, FormMethod method, IDictionary<string, object> htmlAttributes)
+        {
+            return BeginForm(htmlHelper, actionName, controllerName, new RouteValueDictionary(), method, htmlAttributes);
+        }
+
+        public static MvcForm BeginForm(this HtmlHelper htmlHelper, string actionName, string controllerName, object routeValues, FormMethod method, object htmlAttributes)
+        {
+            return BeginForm(htmlHelper, actionName, controllerName, new RouteValueDictionary(routeValues), method, HtmlHelper.AnonymousObjectToHtmlAttributes(htmlAttributes));
+        }
+
+        public static MvcForm BeginForm(this HtmlHelper htmlHelper, string actionName, string controllerName, RouteValueDictionary routeValues, FormMethod method, IDictionary<string, object> htmlAttributes)
+        {
+            string formAction = UrlHelper.GenerateUrl(null /* routeName */, actionName, controllerName, routeValues, htmlHelper.RouteCollection, htmlHelper.ViewContext.RequestContext, true /* includeImplicitMvcValues */);
+            return FormHelper(htmlHelper, formAction, method, htmlAttributes);
+        }
+
+        public static MvcForm BeginRouteForm(this HtmlHelper htmlHelper, object routeValues)
+        {
+            return BeginRouteForm(htmlHelper, null /* routeName */, new RouteValueDictionary(routeValues), FormMethod.Post, new RouteValueDictionary());
+        }
+
+        public static MvcForm BeginRouteForm(this HtmlHelper htmlHelper, RouteValueDictionary routeValues)
+        {
+            return BeginRouteForm(htmlHelper, null /* routeName */, routeValues, FormMethod.Post, new RouteValueDictionary());
+        }
+
+        public static MvcForm BeginRouteForm(this HtmlHelper htmlHelper, string routeName)
+        {
+            return BeginRouteForm(htmlHelper, routeName, new RouteValueDictionary(), FormMethod.Post, new RouteValueDictionary());
+        }
+
+        public static MvcForm BeginRouteForm(this HtmlHelper htmlHelper, string routeName, object routeValues)
+        {
+            return BeginRouteForm(htmlHelper, routeName, new RouteValueDictionary(routeValues), FormMethod.Post, new RouteValueDictionary());
+        }
+
+        public static MvcForm BeginRouteForm(this HtmlHelper htmlHelper, string routeName, RouteValueDictionary routeValues)
+        {
+            return BeginRouteForm(htmlHelper, routeName, routeValues, FormMethod.Post, new RouteValueDictionary());
+        }
+
+        public static MvcForm BeginRouteForm(this HtmlHelper htmlHelper, string routeName, FormMethod method)
+        {
+            return BeginRouteForm(htmlHelper, routeName, new RouteValueDictionary(), method, new RouteValueDictionary());
+        }
+
+        public static MvcForm BeginRouteForm(this HtmlHelper htmlHelper, string routeName, object routeValues, FormMethod method)
+        {
+            return BeginRouteForm(htmlHelper, routeName, new RouteValueDictionary(routeValues), method, new RouteValueDictionary());
+        }
+
+        public static MvcForm BeginRouteForm(this HtmlHelper htmlHelper, string routeName, RouteValueDictionary routeValues, FormMethod method)
+        {
+            return BeginRouteForm(htmlHelper, routeName, routeValues, method, new RouteValueDictionary());
+        }
+
+        public static MvcForm BeginRouteForm(this HtmlHelper htmlHelper, string routeName, FormMethod method, object htmlAttributes)
+        {
+            return BeginRouteForm(htmlHelper, routeName, new RouteValueDictionary(), method, HtmlHelper.AnonymousObjectToHtmlAttributes(htmlAttributes));
+        }
+
+        public static MvcForm BeginRouteForm(this HtmlHelper htmlHelper, string routeName, FormMethod method, IDictionary<string, object> htmlAttributes)
+        {
+            return BeginRouteForm(htmlHelper, routeName, new RouteValueDictionary(), method, htmlAttributes);
+        }
+
+        public static MvcForm BeginRouteForm(this HtmlHelper htmlHelper, string routeName, object routeValues, FormMethod method, object htmlAttributes)
+        {
+            return BeginRouteForm(htmlHelper, routeName, new RouteValueDictionary(routeValues), method, HtmlHelper.AnonymousObjectToHtmlAttributes(htmlAttributes));
+        }
+
+        public static MvcForm BeginRouteForm(this HtmlHelper htmlHelper, string routeName, RouteValueDictionary routeValues, FormMethod method, IDictionary<string, object> htmlAttributes)
+        {
+            string formAction = UrlHelper.GenerateUrl(routeName, null, null, routeValues, htmlHelper.RouteCollection, htmlHelper.ViewContext.RequestContext, false /* includeImplicitMvcValues */);
+            return FormHelper(htmlHelper, formAction, method, htmlAttributes);
+        }
+
+        public static void EndForm(this HtmlHelper htmlHelper)
+        {
+            EndForm(htmlHelper.ViewContext);
+        }
+
+        internal static void EndForm(ViewContext viewContext)
+        {
+            viewContext.Writer.Write("</form>");
+            viewContext.OutputClientValidation();
+            viewContext.FormContext = null;
+        }
+
+        [SuppressMessage("Microsoft.Reliability", "CA2000:Dispose objects before losing scope", Justification = "Because disposing the object would write to the response stream, you don't want to prematurely dispose of this object.")]
+        private static MvcForm FormHelper(this HtmlHelper htmlHelper, string formAction, FormMethod method, IDictionary<string, object> htmlAttributes)
+        {
+            TagBuilder tagBuilder = new TagBuilder("form");
+            tagBuilder.MergeAttributes(htmlAttributes);
+            // action is implicitly generated, so htmlAttributes take precedence.
+            tagBuilder.MergeAttribute("action", formAction);
+            // method is an explicit parameter, so it takes precedence over the htmlAttributes.
+            tagBuilder.MergeAttribute("method", HtmlHelper.GetFormMethodString(method), true);
+
+            bool traditionalJavascriptEnabled = htmlHelper.ViewContext.ClientValidationEnabled
+                                                && !htmlHelper.ViewContext.UnobtrusiveJavaScriptEnabled;
+
+            if (traditionalJavascriptEnabled)
+            {
+                // forms must have an ID for client validation
+                tagBuilder.GenerateId(htmlHelper.ViewContext.FormIdGenerator());
+            }
+
+            htmlHelper.ViewContext.Writer.Write(tagBuilder.ToString(TagRenderMode.StartTag));
+            MvcForm theForm = new MvcForm(htmlHelper.ViewContext);
+
+            if (traditionalJavascriptEnabled)
+            {
+                htmlHelper.ViewContext.FormContext.FormId = tagBuilder.Attributes["id"];
+            }
+
+            return theForm;
+        }
+    }
+}