Imported Upstream version 4.6.0.125

Former-commit-id: a2155e9bd80020e49e72e86c44da02a8ac0e57a4

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

@@ -0,0 +1,96 @@
+//------------------------------------------------------------------------------
+// <copyright file="ControlPropertyNameConverter.cs" company="Microsoft">
+//     Copyright (c) Microsoft Corporation.  All rights reserved.
+// </copyright>
+//------------------------------------------------------------------------------
+
+namespace System.Web.UI.WebControls {
+
+    using System.Collections;
+    using System.ComponentModel;
+    using System.ComponentModel.Design;
+    using System.Globalization;
+    using System.Reflection;
+    using System.Web.Util;
+    using System.Security.Permissions;
+
+
+    /// <devdoc>
+    /// TypeConverter for ControlParameter's PropertyName property.
+    /// </devdoc>
+    public class ControlPropertyNameConverter : StringConverter {
+
+        /// <devdoc>
+        /// Returns a list of all the propery names for a given control.
+        /// </devdoc>
+        private string[] GetPropertyNames(Control control) {
+
+            ArrayList array = new ArrayList();
+
+            PropertyDescriptorCollection pdc = TypeDescriptor.GetProperties(control.GetType());
+
+            foreach (PropertyDescriptor desc in pdc) {
+                array.Add(desc.Name);
+            }
+
+            array.Sort(Comparer.Default);
+
+            return (string[])array.ToArray(typeof(string));
+        }
+
+
+        /// <devdoc>
+        /// Returns a collection of standard values retrieved from the context specified
+        /// by the specified type descriptor.
+        /// </devdoc>
+        public override StandardValuesCollection GetStandardValues(ITypeDescriptorContext context) {
+            if (context == null) {
+                return null;
+            }
+
+            // Get ControlID
+            ControlParameter param = (ControlParameter)context.Instance;
+            string controlID = param.ControlID;
+
+            // Check that we actually have a control ID
+            if (String.IsNullOrEmpty(controlID))
+                return null;
+
+            // Get designer host
+            IDesignerHost host = (IDesignerHost)context.GetService(typeof(IDesignerHost));
+            Debug.Assert(host != null, "Unable to get IDesignerHost in ControlPropertyNameConverter");
+
+            if (host == null)
+                return null;
+
+            // Get control
+            ComponentCollection allComponents = host.Container.Components;
+
+            Control control = allComponents[controlID] as Control;
+
+            if (control == null)
+                return null;
+
+            string[] propertyNames = GetPropertyNames(control);
+
+            return new StandardValuesCollection(propertyNames);
+        }
+
+
+        /// <devdoc>
+        /// Gets whether or not the context specified contains exclusive standard values.
+        /// </devdoc>
+        public override bool GetStandardValuesExclusive(ITypeDescriptorContext context) {
+            return false;
+        }
+
+
+        /// <devdoc>
+        /// Gets whether or not the specified context contains supported standard values.
+        /// </devdoc>
+        public override bool GetStandardValuesSupported(ITypeDescriptorContext context) {
+            return (context != null);
+        }
+    }
+}
+