Implemented layer element saving

Added a working setting to the brush element

src/Artemis.UI/Converters/EnumToCollectionConverter.cs

@@ -0,0 +1,48 @@
+using System;
+using System.Collections.Generic;
+using System.ComponentModel;
+using System.Globalization;
+using System.Linq;
+using System.Windows.Data;
+using System.Windows.Markup;
+
+namespace Artemis.UI.Converters
+{
+    [ValueConversion(typeof(Enum), typeof(IEnumerable<Tuple<object, object>>))]
+    public class EnumToCollectionConverter : MarkupExtension, IValueConverter
+    {
+        public object Convert(object value, Type targetType, object parameter, CultureInfo culture)
+        {
+            return GetAllValuesAndDescriptions(value.GetType());
+        }
+
+        public object ConvertBack(object value, Type targetType, object parameter, CultureInfo culture)
+        {
+            return null;
+        }
+
+        public override object ProvideValue(IServiceProvider serviceProvider)
+        {
+            return this;
+        }
+
+        private static string Description(Enum value)
+        {
+            var attributes = value.GetType().GetField(value.ToString()).GetCustomAttributes(typeof(DescriptionAttribute), false);
+            if (attributes.Any())
+                return (attributes.First() as DescriptionAttribute)?.Description;
+
+            // If no description is found, the least we can do is replace underscores with spaces
+            var ti = CultureInfo.CurrentCulture.TextInfo;
+            return ti.ToTitleCase(ti.ToLower(value.ToString().Replace("_", " ")));
+        }
+
+        private static IEnumerable<Tuple<object, object>> GetAllValuesAndDescriptions(Type t)
+        {
+            if (!t.IsEnum)
+                throw new ArgumentException($"{nameof(t)} must be an enum type");
+
+            return Enum.GetValues(t).Cast<Enum>().Select(e => new Tuple<object, object>(e, Description(e))).ToList();
+        }
+    }
+}