add current ui lang and change event

Dalamud/Interface/DalamudInterface.cs

@@ -223,7 +223,7 @@ namespace Dalamud.Interface
                         {
                             if (ImGui.MenuItem("From Fallbacks"))
                             {
-                                Loc.SetupWithFallbacks();
+                                this.dalamud.LocalizationManager.SetupWithFallbacks();
                             }
 
                             if (ImGui.MenuItem("From UICulture"))

Dalamud/Localization.cs

@@ -13,8 +13,11 @@ namespace Dalamud
     class Localization {
         private readonly string workingDirectory;
 
+        private const string FallbackLangCode = "en";
         public static readonly string[] ApplicableLangCodes = { "de", "ja", "fr", "it", "es", "ko", "no", "ru" };
-
+        public delegate void LocalizationChangedDelegate(string langCode);
+        public event LocalizationChangedDelegate OnLocalizationChanged;
+        
         public Localization(string workingDirectory) {
             this.workingDirectory = workingDirectory;
         }
@@ -28,22 +31,28 @@ namespace Dalamud
                 if (ApplicableLangCodes.Any(x => currentUiLang.TwoLetterISOLanguageName == x)) {
                     SetupWithLangCode(currentUiLang.TwoLetterISOLanguageName);
                 } else {
-                    Loc.SetupWithFallbacks();
+                    SetupWithFallbacks();
                 }
             }
             catch (Exception ex)
             {
                 Log.Error(ex, "Could not get language information. Setting up fallbacks.");
-                Loc.SetupWithFallbacks();
+                SetupWithFallbacks();
             }
         }
 
+        public void SetupWithFallbacks() {
+            OnLocalizationChanged?.Invoke(FallbackLangCode);
+            Loc.SetupWithFallbacks();
+        }
+
         public void SetupWithLangCode(string langCode) {
-            if (langCode.ToLower() == "en") {
+            if (langCode.ToLower() == FallbackLangCode) {
-                Loc.SetupWithFallbacks();
+                SetupWithFallbacks();
                 return;
             }
-
+            
+            OnLocalizationChanged?.Invoke(langCode);
             Loc.Setup(File.ReadAllText(Path.Combine(this.workingDirectory, "UIRes", "loc", "dalamud", $"dalamud_{langCode}.json")));
         }
     }

Dalamud/Plugin/DalamudPluginInterface.cs

@@ -87,7 +87,23 @@ namespace Dalamud.Plugin
 #else
         public bool IsDebugging => this.dalamud.DalamudUi.IsDevMenu;
 #endif
+        
+        /// <summary>
+        /// Event that gets fired when loc is changed
+        /// </summary>
+        public event LanguageChangedDelegate OnLanguageChanged;
+        
+        /// <summary>
+        /// Delegate for localization change with two-letter iso lang code
+        /// </summary>
+        /// <param name="langCode"></param>
+        public delegate void LanguageChangedDelegate(string langCode);
 
+        /// <summary>
+        /// Current ui language in two-letter iso format
+        /// </summary>
+        public string UiLanguage { get; private set; }
+        
         private readonly Dalamud dalamud;
         private readonly string pluginName;
         private readonly PluginConfigurations configs;
@@ -109,6 +125,14 @@ namespace Dalamud.Plugin
             this.dalamud = dalamud;
             this.pluginName = pluginName;
             this.configs = configs;
+
+            this.UiLanguage = this.dalamud.Configuration.LanguageOverride;
+            dalamud.LocalizationManager.OnLocalizationChanged += OnLocalizationChanged;
+        }
+
+        private void OnLocalizationChanged(string langCode) {
+            this.UiLanguage = langCode;
+            OnLanguageChanged?.Invoke(langCode);
         }
 
         /// <summary>
@@ -117,6 +141,7 @@ namespace Dalamud.Plugin
         public void Dispose() {
             this.UiBuilder.Dispose();
             this.Framework.Gui.Chat.RemoveChatLinkHandler(this.pluginName);
+            this.dalamud.LocalizationManager.OnLocalizationChanged -= OnLocalizationChanged;
         }
 
         /// <summary>