Refactoring.

Wox.Plugin.SystemPlugins/Program/ProgramSetting.xaml

@@ -4,6 +4,7 @@
              xmlns:mc="http://schemas.openxmlformats.org/markup-compatibility/2006" 
              xmlns:d="http://schemas.microsoft.com/expression/blend/2008" 
              xmlns:infrastructure="clr-namespace:Wox.Infrastructure;assembly=Wox.Infrastructure"
+             xmlns:program="clr-namespace:Wox.Plugin.SystemPlugins.Program"
              mc:Ignorable="d" 
              d:DesignHeight="300" d:DesignWidth="600">
 
@@ -26,7 +27,7 @@
                     <GridViewColumn Header="Location"  Width="400">
                         <GridViewColumn.CellTemplate>
                             <DataTemplate>
-                                <TextBlock Text="{Binding Location, ConverterParameter=(null), Converter={infrastructure:StringEmptyConverter}}"/>
+                                <TextBlock Text="{Binding Location, ConverterParameter=(null), Converter={program:StringEmptyConverter}}"/>
                             </DataTemplate>
                         </GridViewColumn.CellTemplate>
                     </GridViewColumn>

Wox.Plugin.SystemPlugins/Program/StringEmptyConverter.cs

@@ -0,0 +1,26 @@
+using System;
+using System.Windows.Data;
+using System.Windows.Markup;
+
+namespace Wox.Plugin.SystemPlugins.Program
+{
+    public class StringEmptyConverter : MarkupExtension, IValueConverter
+    {
+        public object Convert(object value, Type targetType, object parameter, System.Globalization.CultureInfo culture)
+        {
+            return string.IsNullOrEmpty((string)value) ? parameter : value;
+        }
+
+        public object ConvertBack(
+              object value, Type targetType, object parameter, System.Globalization.CultureInfo culture)
+        {
+            throw new NotSupportedException();
+        }
+
+
+        public override object ProvideValue(IServiceProvider serviceProvider)
+        {
+            return this;
+        }
+    }
+}

Wox.Plugin.SystemPlugins/UserPluginIndicator.cs

@@ -8,7 +8,7 @@ using Wox.Infrastructure.Storage.UserSettings;
 
 namespace Wox.Plugin.SystemPlugins
 {
-    public class ThirdpartyPluginIndicator : BaseSystemPlugin
+    public class UserPluginIndicator : BaseSystemPlugin
     {
         private List<PluginPair> allPlugins = new List<PluginPair>();
         private PluginInitContext context;

Wox.Plugin.SystemPlugins/Wox.Plugin.SystemPlugins.csproj

@@ -86,6 +86,7 @@
     <Compile Include="Program\ProgramSuffixes.xaml.cs">
       <DependentUpon>ProgramSuffixes.xaml</DependentUpon>
     </Compile>
+    <Compile Include="Program\StringEmptyConverter.cs" />
     <Compile Include="SuggestionSources\Baidu.cs" />
     <Compile Include="SuggestionSources\SuggestionSourceFactory.cs" />
     <Compile Include="Sys\SysSettings.xaml.cs">
@@ -102,7 +103,7 @@
     <Compile Include="Program\Programs.cs" />
     <Compile Include="Properties\AssemblyInfo.cs" />
     <Compile Include="Sys\Sys.cs" />
-    <Compile Include="ThirdpartyPluginIndicator.cs" />
+    <Compile Include="UserPluginIndicator.cs" />
     <Compile Include="SuggestionSources\Google.cs" />
     <Compile Include="SuggestionSources\ISuggestionSource.cs" />
     <Compile Include="WebSearch\WebSearchSetting.xaml.cs">