Save GUI language as string instead of wxLanguage enum

When 5.0-211 updated wxWidgets to 3.1.0, some entries in the
wxLanguage enum were moved and added, changing the wxLanguage
values. Because we save Dolphin's interface language to disk
as a wxLanguage, the language you have set will mean something
different depending on whether you have the updated wx version
or not. For instance, setting the language to English with the
updated version and then using an older version will make
Dolphin use Dutch. Because we can't rely on the enum anymore,
I'm replacing the "Language" setting with a "LanguageCode"
setting that uses standard ISO 639 codes.

4 files changed, 28 insertions, 40 deletions

diff --git a/Source/Core/Core/ConfigManager.cpp b/Source/Core/Core/ConfigManager.cpp
index 0cf06f4e97..b1a63626f6 100644
--- a/Source/Core/Core/ConfigManager.cpp
+++ b/Source/Core/Core/ConfigManager.cpp
@@ -156,7 +156,7 @@ void SConfig::SaveInterfaceSettings(IniFile& ini)
   interface->Set("MainWindowPosY", (iPosY == -32000) ? 0 : iPosY);  // TODO - HAX
   interface->Set("MainWindowWidth", iWidth);
   interface->Set("MainWindowHeight", iHeight);
-  interface->Set("Language", m_InterfaceLanguage);
+  interface->Set("LanguageCode", m_InterfaceLanguage);
   interface->Set("ShowToolbar", m_InterfaceToolbar);
   interface->Set("ShowStatusbar", m_InterfaceStatusbar);
   interface->Set("ShowLogWindow", m_InterfaceLogWindow);
@@ -423,7 +423,7 @@ void SConfig::LoadInterfaceSettings(IniFile& ini)
   interface->Get("MainWindowPosY", &iPosY, 100);
   interface->Get("MainWindowWidth", &iWidth, 800);
   interface->Get("MainWindowHeight", &iHeight, 600);
-  interface->Get("Language", &m_InterfaceLanguage, 0);
+  interface->Get("LanguageCode", &m_InterfaceLanguage, "");
   interface->Get("ShowToolbar", &m_InterfaceToolbar, true);
   interface->Get("ShowStatusbar", &m_InterfaceStatusbar, true);
   interface->Get("ShowLogWindow", &m_InterfaceLogWindow, false);
diff --git a/Source/Core/Core/ConfigManager.h b/Source/Core/Core/ConfigManager.h
index e8fa5eee7d..0f819797d7 100644
--- a/Source/Core/Core/ConfigManager.h
+++ b/Source/Core/Core/ConfigManager.h
@@ -210,7 +210,7 @@ struct SConfig : NonCopyable
   std::string m_bba_mac;
 
   // interface language
-  int m_InterfaceLanguage;
+  std::string m_InterfaceLanguage;
   float m_EmulationSpeed;
   bool m_OCEnable;
   float m_OCFactor;
diff --git a/Source/Core/DolphinWX/Config/InterfaceConfigPane.cpp b/Source/Core/DolphinWX/Config/InterfaceConfigPane.cpp
index a3934c9b8f..30a3c7aa30 100644
--- a/Source/Core/DolphinWX/Config/InterfaceConfigPane.cpp
+++ b/Source/Core/DolphinWX/Config/InterfaceConfigPane.cpp
@@ -27,38 +27,14 @@
 #include "DolphinWX/X11Utils.h"
 #endif
 
-static const wxLanguage language_ids[] = {
-    wxLANGUAGE_DEFAULT,
-
-    wxLANGUAGE_MALAY,
-    wxLANGUAGE_CATALAN,
-    wxLANGUAGE_CZECH,
-    wxLANGUAGE_DANISH,
-    wxLANGUAGE_GERMAN,
-    wxLANGUAGE_ENGLISH,
-    wxLANGUAGE_SPANISH,
-    wxLANGUAGE_FRENCH,
-    wxLANGUAGE_CROATIAN,
-    wxLANGUAGE_ITALIAN,
-    wxLANGUAGE_HUNGARIAN,
-    wxLANGUAGE_DUTCH,
-    wxLANGUAGE_NORWEGIAN_BOKMAL,
-    wxLANGUAGE_POLISH,
-    wxLANGUAGE_PORTUGUESE,
-    wxLANGUAGE_PORTUGUESE_BRAZILIAN,
-    wxLANGUAGE_ROMANIAN,
-    wxLANGUAGE_SERBIAN,
-    wxLANGUAGE_SWEDISH,
-    wxLANGUAGE_TURKISH,
-
-    wxLANGUAGE_GREEK,
-    wxLANGUAGE_RUSSIAN,
-    wxLANGUAGE_ARABIC,
-    wxLANGUAGE_FARSI,
-    wxLANGUAGE_KOREAN,
-    wxLANGUAGE_JAPANESE,
-    wxLANGUAGE_CHINESE_SIMPLIFIED,
-    wxLANGUAGE_CHINESE_TRADITIONAL,
+static const std::string language_ids[] = {
+    "",
+
+    "ms", "ca", "cs",    "da", "de", "en", "es",    "fr",    "hr", "it", "hu", "nl",
+    "nb",  // wxWidgets won't accept "no"
+    "pl", "pt", "pt_BR", "ro", "sr", "sv", "tr",
+
+    "el", "ru", "ar",    "fa", "ko", "ja", "zh_CN", "zh_TW",
 };
 
 InterfaceConfigPane::InterfaceConfigPane(wxWindow* parent, wxWindowID id) : wxPanel(parent, id)
diff --git a/Source/Core/DolphinWX/Main.cpp b/Source/Core/DolphinWX/Main.cpp
index 20460e258c..12938544d6 100644
--- a/Source/Core/DolphinWX/Main.cpp
+++ b/Source/Core/DolphinWX/Main.cpp
@@ -295,11 +295,23 @@ void DolphinApp::AfterInit()
 
 void DolphinApp::InitLanguageSupport()
 {
-  unsigned int language = 0;
-
-  IniFile ini;
-  ini.Load(File::GetUserPath(F_DOLPHINCONFIG_IDX));
-  ini.GetOrCreateSection("Interface")->Get("Language", &language, wxLANGUAGE_DEFAULT);
+  std::string language_code;
+  {
+    IniFile ini;
+    ini.Load(File::GetUserPath(F_DOLPHINCONFIG_IDX));
+    ini.GetOrCreateSection("Interface")->Get("LanguageCode", &language_code, "");
+  }
+  int language = wxLANGUAGE_UNKNOWN;
+  if (language_code.empty())
+  {
+    language = wxLANGUAGE_DEFAULT;
+  }
+  else
+  {
+    const wxLanguageInfo* language_info = wxLocale::FindLanguageInfo(StrToWxStr(language_code));
+    if (language_info)
+      language = language_info->Language;
+  }
 
   // Load language if possible, fall back to system default otherwise
   if (wxLocale::IsAvailable(language))