From ce9c832e00b25189ccf1b8286ec71b68eed0de47 Mon Sep 17 00:00:00 2001
From: qianlifeng <qianlf2008@163.com>
Date: Tue, 6 Jan 2015 18:28:23 +0800
Subject: [PATCH] Implement plugin i18n [WIP]

---
 Plugins/Wox.Plugin.Program/Languages/en.xaml  |   3 +-
 .../Wox.Plugin.Program/ProgramSetting.xaml    |   2 +-
 Plugins/Wox.Plugin.Program/Programs.cs        |  11 +-
 .../Wox.Plugin.Program.csproj                 | 250 +++++++++---------
 Wox.Core/UI/IUIResource.cs                    |   3 +-
 Wox.Core/UI/ResourceMerger.cs                 |  29 +-
 Wox.Core/i18n/IInternationalization.cs        |   9 +
 Wox.Core/i18n/Internationalization.cs         |  64 +++--
 Wox.Infrastructure/Storage/BinaryStorage.cs   |  27 +-
 Wox.Plugin/IPluginI18n.cs                     |  16 ++
 Wox.Plugin/Wox.Plugin.csproj                  |   1 +
 11 files changed, 252 insertions(+), 163 deletions(-)
 create mode 100644 Wox.Plugin/IPluginI18n.cs

diff --git a/Plugins/Wox.Plugin.Program/Languages/en.xaml b/Plugins/Wox.Plugin.Program/Languages/en.xaml
index 4f5cb3aadc..d117108558 100644
--- a/Plugins/Wox.Plugin.Program/Languages/en.xaml
+++ b/Plugins/Wox.Plugin.Program/Languages/en.xaml
@@ -1,6 +1,7 @@
 <ResourceDictionary xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"
                     xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
                     xmlns:system="clr-namespace:System;assembly=mscorlib">
-    
+
+    <system:String x:Key="wox_plugin_porgram_delete">Delete</system:String>
     
 </ResourceDictionary>
\ No newline at end of file
diff --git a/Plugins/Wox.Plugin.Program/ProgramSetting.xaml b/Plugins/Wox.Plugin.Program/ProgramSetting.xaml
index f0cdad9b91..d5036e915e 100644
--- a/Plugins/Wox.Plugin.Program/ProgramSetting.xaml
+++ b/Plugins/Wox.Plugin.Program/ProgramSetting.xaml
@@ -40,7 +40,7 @@
                 <TextBlock Margin="10 0 0 0" Height="20" HorizontalAlignment="Center">Indexing</TextBlock>
             </StackPanel>
             <StackPanel HorizontalAlignment="Right" Orientation="Horizontal">
-                <Button x:Name="btnDeleteProgramSource" Click="btnDeleteProgramSource_OnClick" Width="100" Margin="10" Content="Delete"/>
+                <Button x:Name="btnDeleteProgramSource" Click="btnDeleteProgramSource_OnClick" Width="100" Margin="10" Content="{DynamicResource wox_plugin_porgram_delete}"/>
                 <Button x:Name="btnEditProgramSource" Click="btnEditProgramSource_OnClick" Width="100" Margin="10" Content="Edit"/>
                 <Button x:Name="btnAddProgramSource" Click="btnAddProgramSource_OnClick" Width="100" Margin="10" Content="Add"/>
             </StackPanel>
diff --git a/Plugins/Wox.Plugin.Program/Programs.cs b/Plugins/Wox.Plugin.Program/Programs.cs
index 321bd075d4..ea525140f1 100644
--- a/Plugins/Wox.Plugin.Program/Programs.cs
+++ b/Plugins/Wox.Plugin.Program/Programs.cs
@@ -1,14 +1,16 @@
 using System;
 using System.Collections.Generic;
 using System.Diagnostics;
+using System.IO;
 using System.Linq;
 using System.Reflection;
+using System.Windows;
 using Wox.Infrastructure;
 using Wox.Plugin.Program.ProgramSources;
 
 namespace Wox.Plugin.Program
 {
-    public class Programs : ISettingProvider,IPlugin
+    public class Programs : ISettingProvider, IPlugin, IPluginI18n
     {
         private static object lockObject = new object();
         private static List<Program> programs = new List<Program>();
@@ -76,7 +78,7 @@ namespace Wox.Plugin.Program
             {
                 programs = ProgramCacheStorage.Instance.Programs;
             }
-            Debug.WriteLine(string.Format("Preload {0} programs from cache",programs.Count),"Wox");
+            Debug.WriteLine(string.Format("Preload {0} programs from cache", programs.Count), "Wox");
             using (new Timeit("Program Index"))
             {
                 IndexPrograms();
@@ -180,5 +182,10 @@ namespace Wox.Plugin.Program
         }
 
         #endregion
+
+        public string GetLanguagesFolder()
+        {
+            return Path.Combine(Path.GetDirectoryName(Assembly.GetExecutingAssembly().Location), "Languages");
+        }
     }
 }
diff --git a/Plugins/Wox.Plugin.Program/Wox.Plugin.Program.csproj b/Plugins/Wox.Plugin.Program/Wox.Plugin.Program.csproj
index 0b2087ce8f..c72b51267d 100644
--- a/Plugins/Wox.Plugin.Program/Wox.Plugin.Program.csproj
+++ b/Plugins/Wox.Plugin.Program/Wox.Plugin.Program.csproj
@@ -1,126 +1,126 @@
-<?xml version="1.0" encoding="utf-8"?>
-<Project ToolsVersion="12.0" DefaultTargets="Build" xmlns="http://schemas.microsoft.com/developer/msbuild/2003">
-  <Import Project="$(MSBuildExtensionsPath)\$(MSBuildToolsVersion)\Microsoft.Common.props" Condition="Exists('$(MSBuildExtensionsPath)\$(MSBuildToolsVersion)\Microsoft.Common.props')" />
-  <PropertyGroup>
-    <Configuration Condition=" '$(Configuration)' == '' ">Debug</Configuration>
-    <Platform Condition=" '$(Platform)' == '' ">AnyCPU</Platform>
-    <ProjectGuid>{FDB3555B-58EF-4AE6-B5F1-904719637AB4}</ProjectGuid>
-    <OutputType>Library</OutputType>
-    <AppDesignerFolder>Properties</AppDesignerFolder>
-    <RootNamespace>Wox.Plugin.Program</RootNamespace>
-    <AssemblyName>Wox.Plugin.Program</AssemblyName>
-    <TargetFrameworkVersion>v3.5</TargetFrameworkVersion>
-    <FileAlignment>512</FileAlignment>
-    <SolutionDir Condition="$(SolutionDir) == '' Or $(SolutionDir) == '*Undefined*'">..\..\</SolutionDir>
-    <RestorePackages>true</RestorePackages>
-  </PropertyGroup>
-  <PropertyGroup Condition=" '$(Configuration)|$(Platform)' == 'Debug|AnyCPU' ">
-    <DebugSymbols>true</DebugSymbols>
-    <DebugType>full</DebugType>
-    <Optimize>false</Optimize>
-    <OutputPath>..\..\Output\Debug\Plugins\Wox.Plugin.Program\</OutputPath>
-    <DefineConstants>DEBUG;TRACE</DefineConstants>
-    <ErrorReport>prompt</ErrorReport>
-    <WarningLevel>4</WarningLevel>
-  </PropertyGroup>
-  <PropertyGroup Condition=" '$(Configuration)|$(Platform)' == 'Release|AnyCPU' ">
-    <DebugType>pdbonly</DebugType>
-    <Optimize>true</Optimize>
-    <OutputPath>bin\Release\</OutputPath>
-    <DefineConstants>TRACE</DefineConstants>
-    <ErrorReport>prompt</ErrorReport>
-    <WarningLevel>4</WarningLevel>
-  </PropertyGroup>
-  <ItemGroup>
-    <Reference Include="log4net">
-      <HintPath>..\..\packages\log4net.2.0.3\lib\net35-full\log4net.dll</HintPath>
-    </Reference>
-    <Reference Include="Newtonsoft.Json, Version=6.0.0.0, Culture=neutral, PublicKeyToken=30ad4fe6b2a6aeed, processorArchitecture=MSIL">
-      <SpecificVersion>False</SpecificVersion>
-      <HintPath>..\..\packages\Newtonsoft.Json.6.0.7\lib\net35\Newtonsoft.Json.dll</HintPath>
-    </Reference>
-    <Reference Include="PresentationCore" />
-    <Reference Include="PresentationFramework" />
-    <Reference Include="System" />
-    <Reference Include="System.Core" />
-    <Reference Include="System.Windows.Forms" />
-    <Reference Include="System.Xml.Linq" />
-    <Reference Include="System.Data.DataSetExtensions" />
-    <Reference Include="System.Data" />
-    <Reference Include="System.Xml" />
-    <Reference Include="WindowsBase" />
-  </ItemGroup>
-  <ItemGroup>
-    <Compile Include="FileChangeWatcher.cs" />
-    <Compile Include="IProgramSource.cs" />
-    <Compile Include="Program.cs" />
-    <Compile Include="ProgramCacheStorage.cs" />
-    <Compile Include="Programs.cs" />
-    <Compile Include="ProgramSetting.xaml.cs">
-      <DependentUpon>ProgramSetting.xaml</DependentUpon>
-    </Compile>
-    <Compile Include="ProgramSource.cs" />
-    <Compile Include="ProgramSources\AppPathsProgramSource.cs" />
-    <Compile Include="ProgramSources\CommonStartMenuProgramSource.cs" />
-    <Compile Include="ProgramSources\FileSystemProgramSource.cs" />
-    <Compile Include="ProgramSources\UserStartMenuProgramSource.cs" />
-    <Compile Include="ProgramStorage.cs" />
-    <Compile Include="ProgramSuffixes.xaml.cs">
-      <DependentUpon>ProgramSuffixes.xaml</DependentUpon>
-    </Compile>
-    <Compile Include="StringEmptyConverter.cs" />
-    <Compile Include="Properties\AssemblyInfo.cs" />
-  </ItemGroup>
-  <ItemGroup>
-    <None Include="packages.config" />
-    <None Include="plugin.json">
-      <CopyToOutputDirectory>PreserveNewest</CopyToOutputDirectory>
-    </None>
-  </ItemGroup>
-  <ItemGroup>
-    <None Include="Images\program.png">
-      <CopyToOutputDirectory>PreserveNewest</CopyToOutputDirectory>
-    </None>
-    <Content Include="Languages\en.xaml">
-      <Generator>MSBuild:Compile</Generator>
-      <SubType>Designer</SubType>
-      <CopyToOutputDirectory>PreserveNewest</CopyToOutputDirectory>
-    </Content>
-  </ItemGroup>
-  <ItemGroup>
-    <Page Include="ProgramSetting.xaml">
-      <Generator>MSBuild:Compile</Generator>
-      <SubType>Designer</SubType>
-    </Page>
-    <Page Include="ProgramSuffixes.xaml">
-      <Generator>MSBuild:Compile</Generator>
-      <SubType>Designer</SubType>
-    </Page>
-  </ItemGroup>
-  <ItemGroup>
-    <ProjectReference Include="..\..\Wox.Infrastructure\Wox.Infrastructure.csproj">
-      <Project>{4fd29318-a8ab-4d8f-aa47-60bc241b8da3}</Project>
-      <Name>Wox.Infrastructure</Name>
-    </ProjectReference>
-    <ProjectReference Include="..\..\Wox.Plugin\Wox.Plugin.csproj">
-      <Project>{8451ecdd-2ea4-4966-bb0a-7bbc40138e80}</Project>
-      <Name>Wox.Plugin</Name>
-    </ProjectReference>
-  </ItemGroup>
-  <ItemGroup />
-  <Import Project="$(MSBuildToolsPath)\Microsoft.CSharp.targets" />
-  <Import Project="$(SolutionDir)\.nuget\NuGet.targets" Condition="Exists('$(SolutionDir)\.nuget\NuGet.targets')" />
-  <Target Name="EnsureNuGetPackageBuildImports" BeforeTargets="PrepareForBuild">
-    <PropertyGroup>
-      <ErrorText>这台计算机上缺少此项目引用的 NuGet 程序包。启用“NuGet 程序包还原”可下载这些程序包。有关详细信息，请参阅 http://go.microsoft.com/fwlink/?LinkID=322105。缺少的文件是 {0}。</ErrorText>
-    </PropertyGroup>
-    <Error Condition="!Exists('$(SolutionDir)\.nuget\NuGet.targets')" Text="$([System.String]::Format('$(ErrorText)', '$(SolutionDir)\.nuget\NuGet.targets'))" />
-  </Target>
-  <!-- To modify your build process, add your task inside one of the targets below and uncomment it. 
-       Other similar extension points exist, see Microsoft.Common.targets.
-  <Target Name="BeforeBuild">
-  </Target>
-  <Target Name="AfterBuild">
-  </Target>
-  -->
+<?xml version="1.0" encoding="utf-8"?>
+<Project ToolsVersion="12.0" DefaultTargets="Build" xmlns="http://schemas.microsoft.com/developer/msbuild/2003">
+  <Import Project="$(MSBuildExtensionsPath)\$(MSBuildToolsVersion)\Microsoft.Common.props" Condition="Exists('$(MSBuildExtensionsPath)\$(MSBuildToolsVersion)\Microsoft.Common.props')" />
+  <PropertyGroup>
+    <Configuration Condition=" '$(Configuration)' == '' ">Debug</Configuration>
+    <Platform Condition=" '$(Platform)' == '' ">AnyCPU</Platform>
+    <ProjectGuid>{FDB3555B-58EF-4AE6-B5F1-904719637AB4}</ProjectGuid>
+    <OutputType>Library</OutputType>
+    <AppDesignerFolder>Properties</AppDesignerFolder>
+    <RootNamespace>Wox.Plugin.Program</RootNamespace>
+    <AssemblyName>Wox.Plugin.Program</AssemblyName>
+    <TargetFrameworkVersion>v3.5</TargetFrameworkVersion>
+    <FileAlignment>512</FileAlignment>
+    <SolutionDir Condition="$(SolutionDir) == '' Or $(SolutionDir) == '*Undefined*'">..\..\</SolutionDir>
+    <RestorePackages>true</RestorePackages>
+  </PropertyGroup>
+  <PropertyGroup Condition=" '$(Configuration)|$(Platform)' == 'Debug|AnyCPU' ">
+    <DebugSymbols>true</DebugSymbols>
+    <DebugType>full</DebugType>
+    <Optimize>false</Optimize>
+    <OutputPath>..\..\Output\Debug\Plugins\Wox.Plugin.Program\</OutputPath>
+    <DefineConstants>DEBUG;TRACE</DefineConstants>
+    <ErrorReport>prompt</ErrorReport>
+    <WarningLevel>4</WarningLevel>
+  </PropertyGroup>
+  <PropertyGroup Condition=" '$(Configuration)|$(Platform)' == 'Release|AnyCPU' ">
+    <DebugType>pdbonly</DebugType>
+    <Optimize>true</Optimize>
+    <OutputPath>bin\Release\</OutputPath>
+    <DefineConstants>TRACE</DefineConstants>
+    <ErrorReport>prompt</ErrorReport>
+    <WarningLevel>4</WarningLevel>
+  </PropertyGroup>
+  <ItemGroup>
+    <Reference Include="log4net">
+      <HintPath>..\..\packages\log4net.2.0.3\lib\net35-full\log4net.dll</HintPath>
+    </Reference>
+    <Reference Include="Newtonsoft.Json, Version=6.0.0.0, Culture=neutral, PublicKeyToken=30ad4fe6b2a6aeed, processorArchitecture=MSIL">
+      <SpecificVersion>False</SpecificVersion>
+      <HintPath>..\..\packages\Newtonsoft.Json.6.0.7\lib\net35\Newtonsoft.Json.dll</HintPath>
+    </Reference>
+    <Reference Include="PresentationCore" />
+    <Reference Include="PresentationFramework" />
+    <Reference Include="System" />
+    <Reference Include="System.Core" />
+    <Reference Include="System.Windows.Forms" />
+    <Reference Include="System.Xml.Linq" />
+    <Reference Include="System.Data.DataSetExtensions" />
+    <Reference Include="System.Data" />
+    <Reference Include="System.Xml" />
+    <Reference Include="WindowsBase" />
+  </ItemGroup>
+  <ItemGroup>
+    <Compile Include="FileChangeWatcher.cs" />
+    <Compile Include="IProgramSource.cs" />
+    <Compile Include="Program.cs" />
+    <Compile Include="ProgramCacheStorage.cs" />
+    <Compile Include="Programs.cs" />
+    <Compile Include="ProgramSetting.xaml.cs">
+      <DependentUpon>ProgramSetting.xaml</DependentUpon>
+    </Compile>
+    <Compile Include="ProgramSource.cs" />
+    <Compile Include="ProgramSources\AppPathsProgramSource.cs" />
+    <Compile Include="ProgramSources\CommonStartMenuProgramSource.cs" />
+    <Compile Include="ProgramSources\FileSystemProgramSource.cs" />
+    <Compile Include="ProgramSources\UserStartMenuProgramSource.cs" />
+    <Compile Include="ProgramStorage.cs" />
+    <Compile Include="ProgramSuffixes.xaml.cs">
+      <DependentUpon>ProgramSuffixes.xaml</DependentUpon>
+    </Compile>
+    <Compile Include="StringEmptyConverter.cs" />
+    <Compile Include="Properties\AssemblyInfo.cs" />
+  </ItemGroup>
+  <ItemGroup>
+    <None Include="packages.config" />
+    <None Include="plugin.json">
+      <CopyToOutputDirectory>PreserveNewest</CopyToOutputDirectory>
+    </None>
+  </ItemGroup>
+  <ItemGroup>
+    <None Include="Images\program.png">
+      <CopyToOutputDirectory>PreserveNewest</CopyToOutputDirectory>
+    </None>
+    <Content Include="Languages\en.xaml">
+      <Generator>MSBuild:Compile</Generator>
+      <SubType>Designer</SubType>
+      <CopyToOutputDirectory>PreserveNewest</CopyToOutputDirectory>
+    </Content>
+  </ItemGroup>
+  <ItemGroup>
+    <Page Include="ProgramSetting.xaml">
+      <Generator>MSBuild:Compile</Generator>
+      <SubType>Designer</SubType>
+    </Page>
+    <Page Include="ProgramSuffixes.xaml">
+      <Generator>MSBuild:Compile</Generator>
+      <SubType>Designer</SubType>
+    </Page>
+  </ItemGroup>
+  <ItemGroup>
+    <ProjectReference Include="..\..\Wox.Infrastructure\Wox.Infrastructure.csproj">
+      <Project>{4fd29318-a8ab-4d8f-aa47-60bc241b8da3}</Project>
+      <Name>Wox.Infrastructure</Name>
+    </ProjectReference>
+    <ProjectReference Include="..\..\Wox.Plugin\Wox.Plugin.csproj">
+      <Project>{8451ecdd-2ea4-4966-bb0a-7bbc40138e80}</Project>
+      <Name>Wox.Plugin</Name>
+    </ProjectReference>
+  </ItemGroup>
+  <ItemGroup />
+  <Import Project="$(MSBuildToolsPath)\Microsoft.CSharp.targets" />
+  <Import Project="$(SolutionDir)\.nuget\NuGet.targets" Condition="Exists('$(SolutionDir)\.nuget\NuGet.targets')" />
+  <Target Name="EnsureNuGetPackageBuildImports" BeforeTargets="PrepareForBuild">
+    <PropertyGroup>
+      <ErrorText>这台计算机上缺少此项目引用的 NuGet 程序包。启用“NuGet 程序包还原”可下载这些程序包。有关详细信息，请参阅 http://go.microsoft.com/fwlink/?LinkID=322105。缺少的文件是 {0}。</ErrorText>
+    </PropertyGroup>
+    <Error Condition="!Exists('$(SolutionDir)\.nuget\NuGet.targets')" Text="$([System.String]::Format('$(ErrorText)', '$(SolutionDir)\.nuget\NuGet.targets'))" />
+  </Target>
+  <!-- To modify your build process, add your task inside one of the targets below and uncomment it. 
+       Other similar extension points exist, see Microsoft.Common.targets.
+  <Target Name="BeforeBuild">
+  </Target>
+  <Target Name="AfterBuild">
+  </Target>
+  -->
 </Project>
\ No newline at end of file
diff --git a/Wox.Core/UI/IUIResource.cs b/Wox.Core/UI/IUIResource.cs
index b4940ee39b..a1e398a25c 100644
--- a/Wox.Core/UI/IUIResource.cs
+++ b/Wox.Core/UI/IUIResource.cs
@@ -3,13 +3,14 @@ using System.Collections.Generic;
 using System.Linq;
 using System.Text;
 using System.Windows;
+using Wox.Core.i18n;
 
 namespace Wox.Core.UI
 {
     /// <summary>
     /// Object implement this interface will have the ability to has its own UI styles
     /// </summary>
-    interface IUIResource
+    public interface IUIResource
     {
         ResourceDictionary GetResourceDictionary();
     }
diff --git a/Wox.Core/UI/ResourceMerger.cs b/Wox.Core/UI/ResourceMerger.cs
index 5f6ee7e60c..60e34fdeb6 100644
--- a/Wox.Core/UI/ResourceMerger.cs
+++ b/Wox.Core/UI/ResourceMerger.cs
@@ -3,25 +3,48 @@ using System.Linq;
 using System.Windows;
 using Wox.Core.i18n;
 using Wox.Core.Theme;
+using Wox.Plugin;
 
 namespace Wox.Core.UI
 {
     public class ResourceMerger
     {
         public static void ApplyResources()
+        {
+            Application.Current.Resources.MergedDictionaries.Clear();
+            ApplyUIResources();
+            ApplyPluginLanguages();
+        }
+
+        private static void ApplyUIResources()
         {
             var UIResourceType = typeof(IUIResource);
             var UIResources = AppDomain.CurrentDomain.GetAssemblies()
                 .SelectMany(s => s.GetTypes())
                 .Where(p => p.IsClass && !p.IsAbstract && UIResourceType.IsAssignableFrom(p));
 
-            Application.Current.Resources.MergedDictionaries.Clear();
-
             foreach (var uiResource in UIResources)
             {
                 Application.Current.Resources.MergedDictionaries.Add(
                     ((IUIResource)Activator.CreateInstance(uiResource)).GetResourceDictionary());
             }
         }
+
+        private static void ApplyPluginLanguages()
+        {
+            var pluginI18nType = typeof(IPluginI18n);
+            var pluginI18ns = AppDomain.CurrentDomain.GetAssemblies()
+                .SelectMany(s => s.GetTypes())
+                .Where(p => p.IsClass && !p.IsAbstract && pluginI18nType.IsAssignableFrom(p));
+
+            foreach (IPluginI18n pluginI18n in pluginI18ns)
+            {
+                string languageFile = InternationalizationManager.Internationalization.GetLanguageFile(pluginI18n.GetLanguagesFolder());
+                Application.Current.Resources.MergedDictionaries.Add(new ResourceDictionary
+                {
+                    Source = new Uri(languageFile, UriKind.Absolute)
+                });
+            }
+        }
     }
-}
+}
\ No newline at end of file
diff --git a/Wox.Core/i18n/IInternationalization.cs b/Wox.Core/i18n/IInternationalization.cs
index cbf43364c4..b74af99be1 100644
--- a/Wox.Core/i18n/IInternationalization.cs
+++ b/Wox.Core/i18n/IInternationalization.cs
@@ -11,6 +11,15 @@ namespace Wox.Core.i18n
 
         string GetTranslation(string key);
 
+        /// <summary>
+        /// Get language file for current user selected language
+        /// if couldn't find the current selected language file, it will first try to load en.xaml 
+        /// if en.xaml couldn't find, it will pick up first *.xaml file
+        /// </summary>
+        /// <param name="folder"></param>
+        /// <returns></returns>
+        string GetLanguageFile(string folder);
+
         void ChangeLanguage(Language language);
 
         void ChangeLanguage(string languageCode);
diff --git a/Wox.Core/i18n/Internationalization.cs b/Wox.Core/i18n/Internationalization.cs
index 90342c7343..fdb51e1c35 100644
--- a/Wox.Core/i18n/Internationalization.cs
+++ b/Wox.Core/i18n/Internationalization.cs
@@ -14,28 +14,24 @@ namespace Wox.Core.i18n
 {
     public class Internationalization : IInternationalization, IUIResource
     {
-        private static List<string> languageDirectories = new List<string>();
+        private static string DefaultLanguageDirectory = Path.Combine(Path.GetDirectoryName(Assembly.GetExecutingAssembly().Location), "Languages");
 
         static Internationalization()
         {
-            languageDirectories.Add(Path.Combine(Path.GetDirectoryName(Assembly.GetExecutingAssembly().Location), "Languages"));
             MakesureThemeDirectoriesExist();
         }
 
         private static void MakesureThemeDirectoriesExist()
         {
-            foreach (string pluginDirectory in languageDirectories)
+            if (!Directory.Exists(DefaultLanguageDirectory))
             {
-                if (!Directory.Exists(pluginDirectory))
+                try
                 {
-                    try
-                    {
-                        Directory.CreateDirectory(pluginDirectory);
-                    }
-                    catch (System.Exception e)
-                    {
-                        Log.Error(e.Message);
-                    }
+                    Directory.CreateDirectory(DefaultLanguageDirectory);
+                }
+                catch (System.Exception e)
+                {
+                    Log.Error(e.Message);
                 }
             }
         }
@@ -59,7 +55,7 @@ namespace Wox.Core.i18n
 
         public void ChangeLanguage(Language language)
         {
-            if(language == null) throw new WoxI18nException("language can't be null");
+            if (language == null) throw new WoxI18nException("language can't be null");
 
             string path = GetLanguagePath(language);
             if (string.IsNullOrEmpty(path))
@@ -80,7 +76,7 @@ namespace Wox.Core.i18n
         {
             return new ResourceDictionary
             {
-                Source = new Uri(GetLanguagePath(UserSettingStorage.Instance.Language), UriKind.Absolute)
+                Source = new Uri(GetLanguageFile(DefaultLanguageDirectory), UriKind.Absolute)
             };
         }
 
@@ -115,16 +111,44 @@ namespace Wox.Core.i18n
 
         private string GetLanguagePath(Language language)
         {
-            foreach (string directory in languageDirectories)
+            string path = Path.Combine(DefaultLanguageDirectory, language.LanguageCode + ".xaml");
+            if (File.Exists(path))
             {
-                string path = Path.Combine(directory, language.LanguageCode + ".xaml");
-                if (File.Exists(path))
-                {
-                    return path;
-                }
+                return path;
             }
 
             return string.Empty;
         }
+
+
+        public string GetLanguageFile(string folder)
+        {
+            if (!Directory.Exists(folder)) return string.Empty;
+
+            string path = Path.Combine(folder, UserSettingStorage.Instance.Language + ".xaml");
+            if (File.Exists(path))
+            {
+                return path;
+            }
+            else
+            {
+                string english = Path.Combine(folder, "en.xaml");
+                if (File.Exists(english))
+                {
+                    return english;
+                }
+                else
+                {
+                    string file = Directory.GetFiles(folder).FirstOrDefault(o => o.EndsWith("xaml"));
+                    if (string.IsNullOrEmpty(file))
+                    {
+                        throw new WoxI18nException(string.Format("Couldn't find language file from:{0}, current selected language:{1}"));
+                    }
+
+                    return Path.Combine(folder, file);
+                }
+            }
+
+        }
     }
 }
diff --git a/Wox.Infrastructure/Storage/BinaryStorage.cs b/Wox.Infrastructure/Storage/BinaryStorage.cs
index 4302acbd96..7561ba1149 100644
--- a/Wox.Infrastructure/Storage/BinaryStorage.cs
+++ b/Wox.Infrastructure/Storage/BinaryStorage.cs
@@ -31,19 +31,26 @@ namespace Wox.Infrastructure.Storage
             {
                 using (FileStream fileStream = new FileStream(ConfigPath, FileMode.Open, FileAccess.Read, FileShare.ReadWrite))
                 {
-                    BinaryFormatter binaryFormatter = new BinaryFormatter
+                    if (fileStream.Length > 0)
                     {
-                        AssemblyFormat = FormatterAssemblyStyle.Simple
-                    };
-                    serializedObject = binaryFormatter.Deserialize(fileStream) as T;
-                    if (serializedObject == null)
+                        BinaryFormatter binaryFormatter = new BinaryFormatter
+                        {
+                            AssemblyFormat = FormatterAssemblyStyle.Simple
+                        };
+                        serializedObject = binaryFormatter.Deserialize(fileStream) as T;
+                        if (serializedObject == null)
+                        {
+                            serializedObject = LoadDefault();
+#if (DEBUG)
+                            {
+                                throw new Exception("deserialize failed");
+                            }
+#endif
+                        }
+                    }
+                    else
                     {
                         serializedObject = LoadDefault();
-#if (DEBUG)
-                        {
-                            throw new Exception("deserialize failed");
-                        }
-#endif
                     }
                 }
             }
diff --git a/Wox.Plugin/IPluginI18n.cs b/Wox.Plugin/IPluginI18n.cs
new file mode 100644
index 0000000000..cb13dd02bb
--- /dev/null
+++ b/Wox.Plugin/IPluginI18n.cs
@@ -0,0 +1,16 @@
+using System;
+using System.Collections.Generic;
+using System.IO;
+using System.Linq;
+using System.Text;
+
+namespace Wox.Plugin
+{
+    /// <summary>
+    /// Represent plugins that support internationalization
+    /// </summary>
+    public interface IPluginI18n
+    {
+        string GetLanguagesFolder();
+    }
+}
diff --git a/Wox.Plugin/Wox.Plugin.csproj b/Wox.Plugin/Wox.Plugin.csproj
index d915ddd7bc..8f7aa59418 100644
--- a/Wox.Plugin/Wox.Plugin.csproj
+++ b/Wox.Plugin/Wox.Plugin.csproj
@@ -47,6 +47,7 @@
     <Compile Include="AllowedLanguage.cs" />
     <Compile Include="EventHandler.cs" />
     <Compile Include="IHttpProxy.cs" />
+    <Compile Include="IPluginI18n.cs" />
     <Compile Include="IPlugin.cs" />
     <Compile Include="IPublicAPI.cs" />
     <Compile Include="ISettingProvider.cs" />