Initial Commit

Filtration/Extensions/EnumHelper.cs

@@ -0,0 +1,38 @@
+using System;
+using System.ComponentModel;
+
+namespace Filtration.Extensions
+{
+    internal static class EnumHelper
+    {
+        public static T GetAttributeOfType<T>(this Enum enumVal) where T : Attribute
+        {
+            var type = enumVal.GetType();
+            var memInfo = type.GetMember(enumVal.ToString());
+            var attributes = memInfo[0].GetCustomAttributes(typeof(T), false);
+            return (attributes.Length > 0) ? (T)attributes[0] : null;
+        }
+
+        public static string GetAttributeDescription(this Enum enumValue)
+        {
+            var attribute = enumValue.GetAttributeOfType<DescriptionAttribute>();
+
+            return attribute == null ? String.Empty : attribute.Description;
+        }
+
+        public static T GetEnumValueFromDescription<T>(string description)
+        {
+            var fis = typeof(T).GetFields();
+
+            foreach (var fi in fis)
+            {
+                DescriptionAttribute[] attributes = (DescriptionAttribute[])fi.GetCustomAttributes(typeof(DescriptionAttribute), false);
+
+                if (attributes.Length > 0 && attributes[0].Description == description)
+                    return (T)Enum.Parse(typeof(T), fi.Name);
+            }
+
+            throw new Exception("Not found");
+        }
+    }
+}

Filtration/Extensions/EnumerationExtension.cs

@@ -0,0 +1,65 @@
+using System;
+using System.ComponentModel;
+using System.Linq;
+using System.Windows.Markup;
+
+namespace Filtration.Extensions
+{
+    internal class EnumerationExtension : MarkupExtension
+    {
+        private Type _enumType;
+
+
+        public EnumerationExtension(Type enumType)
+        {
+            if (enumType == null) throw new ArgumentNullException("enumType");
+
+            EnumType = enumType;
+        }
+
+        public Type EnumType
+        {
+            get
+            {
+                return _enumType;
+            }
+            private set
+            {
+                if (_enumType == value) return;
+
+                var enumType = Nullable.GetUnderlyingType(value) ?? value;
+
+                if (enumType.IsEnum == false) throw new ArgumentException("Type must be an Enum.");
+
+                _enumType = value;
+            }
+        }
+
+        public override object ProvideValue(IServiceProvider serviceProvider)
+        {
+            var enumValues = Enum.GetValues(EnumType);
+
+            return (from object enumValue in enumValues
+                    select new EnumerationMember { Value = enumValue, Description = GetDescription(enumValue) }).ToArray
+                ();
+        }
+
+        private string GetDescription(object enumValue)
+        {
+            var descriptionAttribute =
+                EnumType.GetField(enumValue.ToString())
+                    .GetCustomAttributes(typeof(DescriptionAttribute), false)
+                    .FirstOrDefault() as DescriptionAttribute;
+
+
+            return descriptionAttribute != null ? descriptionAttribute.Description : enumValue.ToString();
+        }
+
+        public class EnumerationMember
+        {
+            public string Description { get; set; }
+
+            public object Value { get; set; }
+        }
+    }
+}