1 files changed, 127 insertions, 0 deletions
diff --git a/win/CS/HandBrake.ApplicationServices/Utilities/EnumHelper.cs b/win/CS/HandBrake.ApplicationServices/Utilities/EnumHelper.cs
new file mode 100644
index 000000000..d6c972b5e
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+++ b/win/CS/HandBrake.ApplicationServices/Utilities/EnumHelper.cs
@@ -0,0 +1,127 @@
+// --------------------------------------------------------------------------------------------------------------------
+// <copyright file="EnumHelper.cs" company="HandBrake Project (http://handbrake.fr)">
+//   This file is part of the HandBrake source code - It may be used under the terms of the GNU General Public License.
+// </copyright>
+// <summary>
+//   Enum Helpers
+// </summary>
+// --------------------------------------------------------------------------------------------------------------------
+
+namespace HandBrake.ApplicationServices.Utilities
+{
+    using System;
+    using System.Collections.Generic;
+    using System.Collections.ObjectModel;
+    using System.ComponentModel;
+    using System.ComponentModel.DataAnnotations;
+    using System.Linq;
+    using System.Reflection;
+
+    /// <summary>
+    /// Enum Helpers
+    /// </summary>
+    /// <typeparam name="T">
+    /// The Type Parameter
+    /// </typeparam>
+    public class EnumHelper<T>
+    {
+        /// <summary>
+        /// Get the description of an Enum
+        /// </summary>
+        /// <param name="value">
+        /// The value.
+        /// </param>
+        /// <returns>
+        /// The Description string
+        /// </returns>
+        public static string GetDescription(T value)
+        {
+            FieldInfo fieldInfo = value.GetType().GetField(value.ToString());
+            DescriptionAttribute[] attributes =
+                  (DescriptionAttribute[])fieldInfo.GetCustomAttributes(
+                  typeof(DescriptionAttribute), false);
+            return (attributes.Length > 0) ? attributes[0].Description : value.ToString();
+        }
+
+        /// <summary>
+        /// Get the Display Value of the Enum Model
+        /// </summary>
+        /// <param name="value">An Enum with Display Attributes</param>
+        /// <returns>A string name</returns>
+        public static string GetDisplay(T value)
+        {
+            FieldInfo fieldInfo = value.GetType().GetField(value.ToString());
+            DisplayAttribute[] attributes = (DisplayAttribute[])fieldInfo.GetCustomAttributes(typeof(DisplayAttribute), false);
+
+            return (attributes.Length > 0) ? attributes[0].Name : value.ToString();
+        }
+
+        /// <summary>
+        /// Get the Enumeration for a given Enum Description
+        /// </summary>
+        /// <param name="description">The String description</param>
+        /// <returns>The Enum Value</returns>
+        public static T GetValue(string description)
+        {
+            foreach (T val in Enum.GetValues(typeof(T)))
+            {
+                string currDescription = GetDescription(val);
+                string currDisplay = GetDisplay(val);
+                if (currDescription == description || currDisplay == description)
+                {
+                    return val;
+                }
+            }
+
+            throw new ArgumentOutOfRangeException("The Description for the enum was not recognized.");
+        }
+
+        /// <summary>
+        /// Return a list of all the enum values.
+        /// </summary>
+        /// <returns>
+        /// An Enum Oject List
+        /// </returns>
+        public static IEnumerable<T> GetEnumList()
+        {
+            return Enum.GetValues(typeof(T)).Cast<T>().ToList();
+        }
+
+        /// <summary>
+        /// Get a list of string names for each enum value.
+        /// </summary>
+        /// <param name="enumType">
+        /// The enum type.
+        /// </param>
+        /// <typeparam name="T">
+        /// The type of the enum
+        /// </typeparam>
+        /// <returns>
+        /// A collection of strings that represent all the enum values
+        /// </returns>
+        public static IEnumerable<string> GetEnumDisplayValues(Type enumType)
+        {
+            var strings = new Collection<string>();
+            foreach (T e in Enum.GetValues(enumType))
+                strings.Add(GetDisplay(e));
+            return strings;
+        }
+
+        /// <summary>
+        /// Get a list of string names for each enum value passed in.
+        /// </summary>
+        /// <param name="items">
+        /// The items.
+        /// </param>
+        /// <typeparam name="T">
+        /// The type of the enum
+        /// </typeparam>
+        /// <returns>
+        /// A collection of strings that represent all the enum values
+        /// </returns>
+        public static IEnumerable<string> GetEnumDisplayValuesSubset(IEnumerable<T> items)
+        {
+            return items.Select(GetDisplay).ToList();
+        }
+    }
+}