added language in settings

Author: Felipe Eliseu

lib/l10n/intl_en.arb

@@ -353,5 +353,13 @@
   "settingsEPTDescription": "",
   "@settingsEPTDescription": {
     "description": "The description for Show experimental tweaks"
+  },
+  "restartAppDialog": "You must restart your app for the changes to take effect",
+  "@restartAppDialog": {
+    "description": ""
+  },
+  "settingsLanguageLabel": "Language",
+  "@settingsLanguageLabel": {
+    "description": ""
   }
 }

lib/main.dart

@@ -20,6 +20,8 @@ void main() async {
         r'SOFTWARE\Revision\Revision Tool', 'ThemeMode', ThemeMode.system.name);
     writeRegistryDword(Registry.localMachine,
         r'SOFTWARE\Revision\Revision Tool', 'Experimental', 0);
+    writeRegistryString(Registry.localMachine,
+        r'SOFTWARE\Revision\Revision Tool', 'Language', 'en_US');
   }
   final settingsController = AppTheme(SettingsService());
   await settingsController.loadSettings();
@@ -53,6 +55,7 @@ class MyApp extends StatelessWidget {
 
   @override
   Widget build(BuildContext context) {
+
     return ChangeNotifierProvider(
       create: (_) => AppTheme(SettingsService()),
       builder: (context, _) {
@@ -65,7 +68,7 @@ class MyApp extends StatelessWidget {
             ReviLocalizations.delegate,
             GlobalWidgetsLocalizations.delegate,
           ],
-          locale: appTheme.locale,
+          locale: Locale(appLanguage.split('_')[0], appLanguage.split('_')[1]),
           supportedLocales: ReviLocalizations.supportedLocales,
           themeMode: appTheme.themeMode,
           color: appTheme.color,

lib/screens/settings.dart

@@ -136,6 +136,40 @@ class _SettingsPageState extends State<SettingsPage> {
             },
           ),
         ),
+        CardHighlight(
+          icon: msicons.FluentIcons.local_language_20_regular,
+          label: ReviLocalizations.of(context).settingsLanguageLabel,
+          child: ComboBox(
+            value: appLanguage,
+            onChanged: (value) {
+              setState(() {
+                appLanguage = value ?? 'en_US';
+                writeRegistryString(Registry.localMachine,
+                    r'SOFTWARE\Revision\Revision Tool', 'Language', appLanguage);
+              });
+              showDialog(
+                context: context,
+                builder: (context) => ContentDialog(
+                  content: Text(ReviLocalizations.of(context).restartAppDialog),
+                  actions: [
+                    Button(
+                      child: Text(ReviLocalizations.of(context).okButton),
+                      onPressed: () {
+                        Navigator.pop(context);
+                      },
+                    )
+                  ],
+                ),
+              );
+            },
+            items: [
+              ComboBoxItem(
+                value: 'en_US',
+                child: Text('English'),
+              )
+            ],
+          ),
+        ),
       ],
     );
   }

lib/utils.dart

@@ -24,6 +24,9 @@ bool expBool = readRegistryInt(RegistryHive.localMachine,
 String? themeModeReg = readRegistryString(
     RegistryHive.localMachine, r'SOFTWARE\Revision\Revision Tool', 'ThemeMode');
 
+String appLanguage = readRegistryString(
+    RegistryHive.localMachine, r'SOFTWARE\Revision\Revision Tool', 'Language',) ?? 'en_US';
+
 int? readRegistryInt(RegistryHive hive, String path, String value) {
   try {
     return Registry.openPath(