Imported Upstream version 4.0.0~alpha1

Former-commit-id: 806294f5ded97629b74c85c09952f2a74fe182d9

external/referencesource/System.Web/UI/WebControls/Adapters/WebControlAdapter.cs

@@ -0,0 +1,49 @@
+//------------------------------------------------------------------------------
+// <copyright file="WebControlAdapter.cs" company="Microsoft">
+//     Copyright (c) Microsoft Corporation.  All rights reserved.
+// </copyright>
+//------------------------------------------------------------------------------
+
+namespace System.Web.UI.WebControls.Adapters {
+
+    using System;
+    using System.Web;
+    using System.Web.UI;
+    using System.Web.UI.Adapters;
+
+    // Provides adaptive rendering for a web control.
+    public class WebControlAdapter : ControlAdapter {
+        // Returns a strongly typed control instance.
+        protected new WebControl Control {
+            get {
+                return (WebControl)base.Control;
+            }
+        }
+
+        /// Indicates whether the associated WebControl is enabled
+        /// taking into account the cascading effect of the enabled property.
+        protected bool IsEnabled {
+            get {
+                return Control.IsEnabled;
+            }
+        }
+
+        protected virtual void RenderBeginTag(HtmlTextWriter writer) {
+            Control.RenderBeginTag(writer); 
+        }
+
+        protected virtual void RenderEndTag(HtmlTextWriter writer) {
+            Control.RenderEndTag(writer); 
+        }
+
+        protected virtual void RenderContents(HtmlTextWriter writer) {
+            Control.RenderContents(writer); 
+        }
+
+        protected internal override void Render(HtmlTextWriter writer) {
+            RenderBeginTag(writer);
+            RenderContents(writer);
+            RenderEndTag(writer);
+        }
+    }
+}