Implement plugin i18n [WIP]

Plugins/Wox.Plugin.Program/Languages/en.xaml

@@ -2,5 +2,6 @@
                     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>

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>

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");
+        }
     }
 }

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();
     }

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)
+                });
+            }
+        }
     }
 }

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);

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(DefaultLanguageDirectory);
-                    {
+                }
-                        Directory.CreateDirectory(pluginDirectory);
+                catch (System.Exception e)
-                    }
+                {
-                    catch (System.Exception e)
+                    Log.Error(e.Message);
-                    {
-                        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");
+                return path;
-                if (File.Exists(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);
+                }
+            }
+
+        }
     }
 }

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
+                        BinaryFormatter binaryFormatter = new BinaryFormatter
-                    };
+                        {
-                    serializedObject = binaryFormatter.Deserialize(fileStream) as T;
+                            AssemblyFormat = FormatterAssemblyStyle.Simple
-                    if (serializedObject == null)
+                        };
+                        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
                     }
                 }
             }

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();
+    }
+}

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" />