1 files changed, 91 insertions, 0 deletions
diff --git a/src/DotNetOpenAuth.Core.UI/ComponentModel/SuggestedStringsConverter.cs b/src/DotNetOpenAuth.Core.UI/ComponentModel/SuggestedStringsConverter.cs
new file mode 100644
index 0000000..62a4b13
--- /dev/null
+++ b/src/DotNetOpenAuth.Core.UI/ComponentModel/SuggestedStringsConverter.cs
@@ -0,0 +1,91 @@
+//-----------------------------------------------------------------------
+// <copyright file="SuggestedStringsConverter.cs" company="Andrew Arnott">
+//     Copyright (c) Andrew Arnott. All rights reserved.
+// </copyright>
+//-----------------------------------------------------------------------
+
+namespace DotNetOpenAuth.ComponentModel {
+	using System;
+	using System.Collections;
+	using System.ComponentModel.Design.Serialization;
+	using System.Diagnostics.Contracts;
+	using System.Linq;
+	using System.Reflection;
+
+	/// <summary>
+	/// A type that generates suggested strings for Intellisense,
+	/// but doesn't actually convert between strings and other types.
+	/// </summary>
+	[ContractClass(typeof(SuggestedStringsConverterContract))]
+	public abstract class SuggestedStringsConverter : ConverterBase<string> {
+		/// <summary>
+		/// Initializes a new instance of the <see cref="SuggestedStringsConverter"/> class.
+		/// </summary>
+		protected SuggestedStringsConverter() {
+		}
+
+		/// <summary>
+		/// Gets the type to reflect over for the well known values.
+		/// </summary>
+		[Pure]
+		protected abstract Type WellKnownValuesType { get; }
+
+		/// <summary>
+		/// Gets the values of public static fields and properties on a given type.
+		/// </summary>
+		/// <param name="type">The type to reflect over.</param>
+		/// <returns>A collection of values.</returns>
+		internal static ICollection GetStandardValuesForCacheShared(Type type) {
+			Requires.NotNull(type, "type");
+			Contract.Ensures(Contract.Result<ICollection>() != null);
+
+			var fields = from field in type.GetFields(BindingFlags.Static | BindingFlags.Public)
+						 select field.GetValue(null);
+			var properties = from prop in type.GetProperties(BindingFlags.Static | BindingFlags.Public)
+							 select prop.GetValue(null, null);
+			return fields.Concat(properties).ToArray();
+		}
+
+		/// <summary>
+		/// Converts a value from its string representation to its strongly-typed object.
+		/// </summary>
+		/// <param name="value">The value.</param>
+		/// <returns>The strongly-typed object.</returns>
+		[Pure]
+		protected override string ConvertFrom(string value) {
+			return value;
+		}
+
+		/// <summary>
+		/// Creates the reflection instructions for recreating an instance later.
+		/// </summary>
+		/// <param name="value">The value to recreate later.</param>
+		/// <returns>
+		/// The description of how to recreate an instance.
+		/// </returns>
+		[Pure]
+		protected override InstanceDescriptor CreateFrom(string value) {
+			// No implementation necessary since we're only dealing with strings.
+			throw new NotImplementedException();
+		}
+
+		/// <summary>
+		/// Converts the strongly-typed value to a string.
+		/// </summary>
+		/// <param name="value">The value to convert.</param>
+		/// <returns>The string representation of the object.</returns>
+		[Pure]
+		protected override string ConvertToString(string value) {
+			return value;
+		}
+
+		/// <summary>
+		/// Gets the standard values to suggest with Intellisense in the designer.
+		/// </summary>
+		/// <returns>A collection of the standard values.</returns>
+		[Pure]
+		protected override ICollection GetStandardValuesForCache() {
+			return GetStandardValuesForCacheShared(this.WellKnownValuesType);
+		}
+	}
+}