Merge pull request #697 from VitalElement/issue696-fontweight-converter

FontWeight TypeConverter to Resolve Issue 696

src/Markup/Avalonia.Markup.Xaml/Avalonia.Markup.Xaml.csproj

@@ -60,6 +60,7 @@
     <Compile Include="Converters\ColumnDefinitionsTypeConverter.cs" />
     <Compile Include="Converters\CursorTypeConverter.cs" />
     <Compile Include="Converters\DateTimeTypeConverter.cs" />
+    <Compile Include="Converters\FontWeightConverter.cs" />
     <Compile Include="Converters\GeometryTypeConverter.cs" />
     <Compile Include="Converters\GridLengthTypeConverter.cs" />
     <Compile Include="Converters\IconTypeConverter.cs" />

src/Markup/Avalonia.Markup.Xaml/Context/AvaloniaTypeFeatureProvider.cs

@@ -174,6 +174,7 @@ namespace Avalonia.Markup.Xaml.Context
             RegisterTypeConverter(typeof(Uri), new UriTypeConverter());
             RegisterTypeConverter(typeof(Cursor), new CursorTypeConverter());
             RegisterTypeConverter(typeof(WindowIcon), new IconTypeConverter());
+            RegisterTypeConverter(typeof(FontWeight), new FontWeightConverter());
         }
     }
 }

src/Markup/Avalonia.Markup.Xaml/Converters/FontWeightConverter.cs

@@ -0,0 +1,39 @@
+namespace Avalonia.Markup.Xaml.Converters
+{
+    using Avalonia.Media;
+    using OmniXaml.TypeConversion;
+    using System;
+    using System.Globalization;
+
+    public class FontWeightConverter : ITypeConverter
+    {
+        public bool CanConvertFrom(IValueContext context, Type sourceType)
+        {
+            return sourceType == typeof(string);
+        }
+
+        public bool CanConvertTo(IValueContext context, Type destinationType)
+        {
+            return false;
+        }
+
+        public object ConvertFrom(IValueContext context, CultureInfo culture, object value)
+        {
+            FontWeight result;
+            
+            if (Enum.TryParse(value as string, out result))
+            {
+                return result;
+            }
+            else
+            {
+                throw new ArgumentException("unable to convert parameter to FontWeight");
+            }
+        }
+
+        public object ConvertTo(IValueContext context, CultureInfo culture, object value, Type destinationType)
+        {
+            throw new NotImplementedException();
+        }
+    }
+}