Pass scriptcode and variantcode to dart:ui Window. (#6493)

lib/ui/hooks.dart

@@ -48,7 +48,7 @@ String _localeClosure() => window._locale.toString();
 _LocaleClosure _getLocaleClosure() => _localeClosure;
 
 @pragma('vm:entry-point')
-void _updateLocale(String languageCode, String countryCode) {
+void _updateLocale(String languageCode, String countryCode, String scriptCode, String variantCode) {
   window._locale = new Locale(languageCode, countryCode);
   _invoke(window.onLocaleChanged, window._onLocaleChangedZone);
 }

lib/ui/window/window.cc

@@ -163,7 +163,9 @@ void Window::UpdateWindowMetrics(const ViewportMetrics& metrics) {
 }
 
 void Window::UpdateLocale(const std::string& language_code,
-                          const std::string& country_code) {
+                          const std::string& country_code,
+                          const std::string& script_code,
+                          const std::string& variant_code) {
   std::shared_ptr<tonic::DartState> dart_state = library_.dart_state().lock();
   if (!dart_state)
     return;
@@ -173,6 +175,8 @@ void Window::UpdateLocale(const std::string& language_code,
                   {
                       StdStringToDart(language_code),
                       StdStringToDart(country_code),
+                      StdStringToDart(script_code),
+                      StdStringToDart(variant_code),
                   });
 }
 

lib/ui/window/window.h

@@ -60,7 +60,9 @@ class Window final {
   void DidCreateIsolate();
   void UpdateWindowMetrics(const ViewportMetrics& metrics);
   void UpdateLocale(const std::string& language_code,
-                    const std::string& country_code);
+                    const std::string& country_code,
+                    const std::string& script_code,
+                    const std::string& variant_code);
   void UpdateUserSettingsData(const std::string& data);
   void UpdateSemanticsEnabled(bool enabled);
   void UpdateAccessibilityFeatures(int32_t flags);

runtime/runtime_controller.cc

@@ -124,7 +124,8 @@ std::unique_ptr<RuntimeController> RuntimeController::Clone() const {
 
 bool RuntimeController::FlushRuntimeStateToIsolate() {
   return SetViewportMetrics(window_data_.viewport_metrics) &&
-         SetLocale(window_data_.language_code, window_data_.country_code) &&
+         SetLocale(window_data_.language_code, window_data_.country_code,
+                   window_data_.script_code, window_data_.variant_code) &&
          SetSemanticsEnabled(window_data_.semantics_enabled) &&
          SetAccessibilityFeatures(window_data_.accessibility_feature_flags_);
 }
@@ -140,12 +141,17 @@ bool RuntimeController::SetViewportMetrics(const ViewportMetrics& metrics) {
 }
 
 bool RuntimeController::SetLocale(const std::string& language_code,
-                                  const std::string& country_code) {
+                                  const std::string& country_code,
+                                  const std::string& script_code,
+                                  const std::string& variant_code) {
   window_data_.language_code = language_code;
   window_data_.country_code = country_code;
+  window_data_.script_code = script_code;
+  window_data_.variant_code = variant_code;
 
   if (auto window = GetWindowIfAvailable()) {
-    window->UpdateLocale(window_data_.language_code, window_data_.country_code);
+    window->UpdateLocale(window_data_.language_code, window_data_.country_code,
+                         window_data_.script_code, window_data_.variant_code);
     return true;
   }
 

runtime/runtime_controller.h

@@ -41,7 +41,9 @@ class RuntimeController final : public WindowClient {
   bool SetViewportMetrics(const ViewportMetrics& metrics);
 
   bool SetLocale(const std::string& language_code,
-                 const std::string& country_code);
+                 const std::string& country_code,
+                 const std::string& script_code,
+                 const std::string& variant_code);
 
   bool SetUserSettingsData(const std::string& data);
 
@@ -80,6 +82,8 @@ class RuntimeController final : public WindowClient {
     ViewportMetrics viewport_metrics;
     std::string language_code;
     std::string country_code;
+    std::string script_code;
+    std::string variant_code;
     std::string user_settings_data = "{}";
     bool semantics_enabled = false;
     bool assistive_technology_enabled = false;

shell/common/engine.cc

@@ -327,12 +327,15 @@ bool Engine::HandleLocalizationPlatformMessage(
 
   const auto& language = args->value[0];
   const auto& country = args->value[1];
+  const auto& script = args->value[2];
+  const auto& variant = args->value[3];
 
   if (!language.IsString() || !country.IsString())
     return false;
 
   return runtime_controller_->SetLocale(language.GetString(),
-                                        country.GetString());
+                                        country.GetString(), script.GetString(),
+                                        variant.GetString());
 }
 
 void Engine::HandleSettingsPlatformMessage(blink::PlatformMessage* message) {

shell/platform/android/io/flutter/view/FlutterView.java

@@ -317,7 +317,7 @@ public class FlutterView extends SurfaceView
     }
 
     private void setLocale(Locale locale) {
-        mFlutterLocalizationChannel.invokeMethod("setLocale", Arrays.asList(locale.getLanguage(), locale.getCountry()));
+        mFlutterLocalizationChannel.invokeMethod("setLocale", Arrays.asList(locale.getLanguage(), locale.getCountry(), locale.getScript(), locale.getVariant()));
     }
 
     @Override

shell/platform/darwin/ios/framework/Source/FlutterViewController.mm

@@ -894,8 +894,16 @@ static blink::PointerData::DeviceKind DeviceKindFromTouchType(UITouch* touch) {
   NSLocale* currentLocale = [NSLocale currentLocale];
   NSString* languageCode = [currentLocale objectForKey:NSLocaleLanguageCode];
   NSString* countryCode = [currentLocale objectForKey:NSLocaleCountryCode];
+  NSString* scriptCode = [currentLocale objectForKey:NSLocaleScriptCode];
+  NSString* variantCode = [currentLocale objectForKey:NSLocaleVariantCode];
   if (languageCode && countryCode)
-    [_localizationChannel.get() invokeMethod:@"setLocale" arguments:@[ languageCode, countryCode ]];
+    // We pass empty strings for undefined scripts and variants to ensure the JSON encoder/decoder
+    // functions properly.
+    [_localizationChannel.get() invokeMethod:@"setLocale"
+                                   arguments:@[
+                                     languageCode, countryCode, scriptCode ? scriptCode : @"",
+                                     variantCode ? variantCode : @""
+                                   ]];
 }
 
 #pragma mark - Set user settings

testing/dart/window_hooks_integration_test.dart

@@ -100,7 +100,7 @@ void main() {
         };
       });
 
-      _updateLocale('en', 'US');
+      _updateLocale('en', 'US', '', '');
       expect(runZone, isNotNull);
       expect(runZone, same(innerZone));
       expect(locale, equals(const Locale('en', 'US')));