Imported Upstream version 4.6.0.125

Former-commit-id: a2155e9bd80020e49e72e86c44da02a8ac0e57a4

mcs/class/referencesource/System.Web/UI/StringPropertyBuilder.cs

@@ -0,0 +1,66 @@
+//------------------------------------------------------------------------------
+// <copyright file="StringPropertyBuilder.cs" company="Microsoft">
+//     Copyright (c) Microsoft Corporation.  All rights reserved.
+// </copyright>
+//------------------------------------------------------------------------------
+
+namespace System.Web.UI {
+    using System;
+    using System.Collections;
+
+    /// <devdoc>
+    /// Builds inner string properties.
+    /// </devdoc>
+    internal sealed class StringPropertyBuilder : ControlBuilder {
+        private string _text;
+
+
+        /// <devdoc>
+        /// Creates a new instance of StringPropertyBuilder.
+        /// </devdoc>
+        internal StringPropertyBuilder() {
+        }
+
+        internal StringPropertyBuilder(string text) {
+            _text = text;
+        }
+
+        /// <devdoc>
+        /// Returns the inner text of the property.
+        /// </devdoc>
+        public string Text {
+            get {
+                return (_text == null) ? String.Empty : _text;
+            }
+        }
+
+        /// <devdoc>
+        /// Gets the inner text of the property.
+        /// </devdoc>
+        public override void AppendLiteralString(string s) {
+            if (ParentBuilder != null && ParentBuilder.HtmlDecodeLiterals())
+                s = HttpUtility.HtmlDecode(s);
+
+            _text = s;
+        }
+
+        /// <devdoc>
+        /// Throws an exception - string properties cannot contain other objects.
+        /// </devdoc>
+        public override void AppendSubBuilder(ControlBuilder subBuilder) {
+            throw new HttpException(SR.GetString(SR.StringPropertyBuilder_CannotHaveChildObjects, TagName, (ParentBuilder != null ? ParentBuilder.TagName : String.Empty)));
+        }
+
+        public override object BuildObject() {
+            return Text;
+        }
+
+        public override void Init(TemplateParser parser, ControlBuilder parentBuilder,
+                                  Type type, string tagName, string ID, IDictionary attribs) {
+
+            base.Init(parser, parentBuilder, type /*type*/, tagName, ID, attribs);
+
+            SetControlType(typeof(string));
+        }
+    }
+}