ajout de la localization

lib/Classes/localization/translation.dart

@@ -0,0 +1,31 @@
+import 'dart:async';
+import 'dart:convert';
+import 'package:flutter/material.dart';
+import 'package:flutter/services.dart' show rootBundle;
+
+class LanguageTranslation {
+  late Locale locale;
+  static Map<dynamic, dynamic> _localizedValues = {};
+
+  LanguageTranslation(this.locale) {
+    _localizedValues = {};
+  }
+
+  static LanguageTranslation? of(BuildContext context) {
+    return Localizations.of<LanguageTranslation>(context, LanguageTranslation);
+  }
+
+  String text(String key) {
+    return _localizedValues[key] ?? '** $key not found';
+  }
+
+  static Future<LanguageTranslation> load(Locale locale) async {
+    LanguageTranslation translations = LanguageTranslation(locale);
+    String jsonContent =
+        await rootBundle.loadString("locales/i18n_${locale.languageCode}.json");
+    _localizedValues = json.decode(jsonContent);
+    return translations;
+  }
+
+  get currentLanguage => locale.languageCode;
+}

lib/Classes/localization/translation_delegate.dart

@@ -0,0 +1,17 @@
+import 'dart:async';
+import 'package:flutter/material.dart';
+import 'translation.dart';
+
+class TranslationsDelegate extends LocalizationsDelegate<LanguageTranslation> {
+  const TranslationsDelegate();
+
+  @override
+  bool isSupported(Locale locale) => ['en', 'ar'].contains(locale.languageCode);
+
+  @override
+  Future<LanguageTranslation> load(Locale locale) =>
+      LanguageTranslation.load(locale);
+
+  @override
+  bool shouldReload(TranslationsDelegate old) => false;
+}

lib/main.dart

@@ -5,6 +5,9 @@ import 'Classes/config.dart';
 
 import 'Classes/account.dart';
 
+import 'Classes/localization/translation_delegate.dart';
+import 'package:flutter_localizations/flutter_localizations.dart';
+
 void main() {
   runApp(MultiProvider(providers: [
     ChangeNotifierProvider(
@@ -19,9 +22,28 @@ class MyApp extends StatelessWidget {
   // This widget is the root of your application.
   @override
   Widget build(BuildContext context) {
-    return const MaterialApp(
+    return MaterialApp(
       debugShowCheckedModeBanner: false,
-      home: LoginPage(),
+      localizationsDelegates: const [
+        TranslationsDelegate(),
+        GlobalMaterialLocalizations.delegate,
+        GlobalWidgetsLocalizations.delegate,
+      ],
+      supportedLocales: const [
+        Locale('en', ''),
+        Locale('fr', ''),
+        Locale('pt', ''),
+      ],
+      localeResolutionCallback: (locale, supportedLocales) {
+        for (var supportedLocaleLanguage in supportedLocales) {
+          if (supportedLocaleLanguage.languageCode == locale!.languageCode &&
+              supportedLocaleLanguage.countryCode == locale.countryCode) {
+            return supportedLocaleLanguage;
+          }
+        }
+        return supportedLocales.first;
+      },
+      home: const LoginPage(),
     );
   }
 }

lib/ui/home_page.dart

@@ -1,11 +1,13 @@
 import 'package:flutter/material.dart';
 import 'package:test/Classes/account.dart';
 import 'package:test/Classes/config.dart';
+import 'package:test/Classes/localization/translation.dart';
 import 'package:test/ui/add_password_page.dart';
 import 'package:test/ui/widget/password_widget.dart';
 import 'package:test/ui/widget/page_title_widget.dart';
 import 'package:provider/provider.dart';
-
+import '../Classes/localization/translation.dart';
+import '../Classes/localization/translation_delegate.dart';
 
 class HomePage extends StatefulWidget {
   const HomePage({Key? key}) : super(key: key);
@@ -39,7 +41,9 @@ class _HomePageState extends State<HomePage> {
               padding: EdgeInsets.all(w * 0.04),
               child: Row(
                 children: [
-                  const PageTitleW(title: "Home"),
+                  PageTitleW(
+                      title:
+                          LanguageTranslation.of(context)!.text('home_title')),
                   Expanded(
                     child: Row(
                       mainAxisAlignment: MainAxisAlignment.end,
@@ -89,14 +93,15 @@ class _HomePageState extends State<HomePage> {
                       style: const TextStyle(color: Colors.white),
                       cursorColor: Colors.white,
                       controller: searchCtrl,
-                      decoration: const InputDecoration(
-                        prefixIcon: Icon(
+                      decoration: InputDecoration(
+                        prefixIcon: const Icon(
                           Icons.search,
                           color: Colors.white,
                         ),
                         border: InputBorder.none,
-                        hintText: 'Search',
-                        hintStyle: TextStyle(color: Colors.white),
+                        hintText:
+                            LanguageTranslation.of(context)!.text('search'),
+                        hintStyle: const TextStyle(color: Colors.white),
                       ),
                     ),
                   ),

lib/ui/popup/language_popup.dart

@@ -0,0 +1,43 @@
+import 'package:flutter/material.dart';
+
+import '../../Classes/localization/translation.dart';
+
+languageSelector(BuildContext context) {
+  // set up the button
+
+  // set up the AlertDialog
+  AlertDialog alert = AlertDialog(
+    title: const Text("Choisissez une langue"),
+    actions: [
+      InkWell(
+        onTap: () {
+          LanguageTranslation.load(const Locale("fr"));
+          Navigator.pop(context);
+        },
+        child: const Text("FR"),
+      ),
+      InkWell(
+        onTap: () {
+          LanguageTranslation.load(const Locale("en"));
+          Navigator.pop(context);
+        },
+        child: const Text("EN"),
+      ),
+      InkWell(
+        onTap: () {
+          LanguageTranslation.load(const Locale("pt"));
+          Navigator.pop(context);
+        },
+        child: const Text("PT"),
+      ),
+    ],
+  );
+
+  // show the dialog
+  showDialog(
+    context: context,
+    builder: (BuildContext context) {
+      return alert;
+    },
+  );
+}

lib/ui/setting/setting_theme_page.dart

@@ -2,6 +2,8 @@ import 'package:flutter/services.dart';
 import 'package:flutter/material.dart';
 import 'package:provider/provider.dart';
 import 'package:test/Classes/account.dart';
+import 'package:test/Classes/localization/translation.dart';
+import 'package:test/ui/popup/language_popup.dart';
 import 'package:test/ui/qrcode/qrcode_password.dart';
 import 'package:test/ui/widget/settingwidget/share_widget.dart';
 import 'package:test/ui/widget/page_title_widget.dart';
@@ -165,9 +167,11 @@ class _SettingThemePage extends State<SettingThemePage> {
                 child: Row(children: [
                   Expanded(
                       child: InkWell(
-                          onTap: () {
-                            //envoie de l'email
-                          },
+                          onTap: (() {
+                            setState(() {
+                              languageSelector(context);
+                            });
+                          }),
                           child: Padding(
                               padding: EdgeInsets.all(h * 0.02),
                               child: Row(children: [

locales/i18n_en.json

@@ -0,0 +1,4 @@
+{
+    "home_title" : "Home",
+    "search" : "search"
+}

locales/i18n_fr.json

@@ -0,0 +1,4 @@
+{
+    "home_title" : "Accueil",
+    "search" : "rechercher"
+}

locales/i18n_pt.json

@@ -0,0 +1,4 @@
+{
+    "home_title" : "Inicio",
+    "search" : "busca"
+}

pubspec.yaml

@@ -58,6 +58,8 @@ dependencies:
   ai_barcode_scanner: ^0.0.3
   share_plus: ^6.3.0
   file_picker: ^5.2.3
+  flutter_localizations:
+    sdk: flutter
 
 flutter_icons:
   android: "launcher_icon"
@@ -82,11 +84,13 @@ dev_dependencies:
 flutter:
   assets: 
     - assets/
+    - locales/
 
   # The following line ensures that the Material Icons font is
   # included with your application, so that you can use the icons in
   # the material Icons class.
   uses-material-design: true
+  generate: true
 
   # To add assets to your application, add an assets section, like this:
   # assets: