PropertyGrid: added TimeSpan editor

ExtendedWPFToolkitSolution/Src/WPFToolkit.Extended/PropertyGrid/Implementation/Editors/TimeSpanEditor.cs

@@ -0,0 +1,32 @@
+using System;
+using System.Windows.Data;
+using System.Globalization;
+
+namespace Microsoft.Windows.Controls.PropertyGrid.Editors
+{
+    public class TimeSpanEditor : DateTimeUpDownEditor
+    {
+        private sealed class TimeSpanConverter : IValueConverter
+        {
+            object IValueConverter.Convert(object value, Type targetType, object parameter, CultureInfo culture)
+            {
+                return DateTime.Today + (TimeSpan)value;
+            }
+
+            object IValueConverter.ConvertBack(object value, Type targetType, object parameter, CultureInfo culture)
+            {
+                return ((DateTime)value).TimeOfDay;
+            }
+        }
+
+        protected override void SetControlProperties()
+        {
+            Editor.Format = DateTimeFormat.LongTime;
+        }
+
+        protected override IValueConverter CreateValueConverter()
+        {
+            return new TimeSpanConverter();            
+        }
+    }
+}

ExtendedWPFToolkitSolution/Src/WPFToolkit.Extended/PropertyGrid/Implementation/PropertyGrid.cs

@@ -466,6 +466,8 @@ namespace Microsoft.Windows.Controls.PropertyGrid
                 editor = new ColorEditor();
             else if (propertyItem.PropertyType.IsEnum)
                 editor = new EnumComboBoxEditor();
+            else if (propertyItem.PropertyType == typeof(TimeSpan))
+                editor = new TimeSpanEditor();
             else if (propertyItem.PropertyType == typeof(FontFamily) || propertyItem.PropertyType == typeof(FontWeight) || propertyItem.PropertyType == typeof(FontStyle) || propertyItem.PropertyType == typeof(FontStretch))
                 editor = new FontComboBoxEditor();
             else if (propertyItem.PropertyType.IsGenericType)

ExtendedWPFToolkitSolution/Src/WPFToolkit.Extended/WPFToolkit.Extended.csproj

@@ -256,6 +256,7 @@
     <Compile Include="PropertyGrid\Implementation\Editors\DoubleUpDownEditor.cs" />
     <Compile Include="PropertyGrid\Implementation\Editors\EnumComboBoxEditor.cs" />
     <Compile Include="PropertyGrid\Implementation\Editors\FontComboBoxEditor.cs" />
+    <Compile Include="PropertyGrid\Implementation\Editors\TimeSpanEditor.cs" />
     <Compile Include="PropertyGrid\Implementation\IEditorDefinition.cs" />
     <Compile Include="PropertyGrid\Implementation\Editors\IntegerUpDownEditor.cs" />
     <Compile Include="PropertyGrid\Implementation\Editors\ITypeEditor.cs" />