feat(i18n): add i18n delegate + example

packages/wyatt_i18n/example/lib/main.dart

@@ -15,6 +15,7 @@
 // along with this program. If not, see <https://www.gnu.org/licenses/>.
 
 import 'package:flutter/material.dart';
+import 'package:flutter_localizations/flutter_localizations.dart';
 
 import 'package:wyatt_i18n/wyatt_i18n.dart';
 
@@ -28,51 +29,36 @@ class App extends StatelessWidget {
   static const String title = 'Wyatt i18n Example';
 
   @override
-  Widget build(BuildContext context) => MaterialApp(
-        title: title,
-        theme: ThemeData(
-          primarySwatch: Colors.blue,
+  Widget build(BuildContext context) {
+    final I18nDataSource dataSource = NetworkDataSourceImpl(
+      baseUri: Uri.parse(
+        'https://git.wyatt-studio.fr/Wyatt-FOSS/wyatt-packages/raw/commit/75f561a19e0484e67e511dbf29601ec5f58544aa/packages/wyatt_i18n/example/assets/',
+      ),
+    );
+
+    final I18nRepository repository =
+        I18nRepositoryImpl(dataSource: dataSource);
+
+    return MaterialApp(
+      title: title,
+      theme: ThemeData(
+        primarySwatch: Colors.blue,
+      ),
+      localizationsDelegates: [
+        I18nDelegate(repository: repository),
+        GlobalMaterialLocalizations.delegate,
+        GlobalWidgetsLocalizations.delegate
+      ],
+      home: Scaffold(
+        appBar: AppBar(
+          title: const Text(title),
         ),
-        home: Scaffold(
-          appBar: AppBar(
-            title: const Text(title),
-          ),
-          body: Center(
-            child: FutureBuilder<String>(
-              future: Future(() async {
-                // test
-                const I18nDataSource dataSource = AssetsFileDataSourceImpl();
-
-                final I18nRepository repository =
-                    I18nRepositoryImpl(dataSource: dataSource);
-
-                final test1 = (await repository.load(locale: 'en')).ok;
-                // final test2 = (await repository.loadFrom(
-                //   Uri.parse('assets/i18n.en.yaml'),
-                //   parser: const YamlParser(),
-                // ))
-                //     .ok;
-
-                // print(test1?.locale);
-                // print(test1?.data);
-                // print(test1?.data['btnAddFile']);
-
-                final text = repository.get('youHavePushed', {
-                  'count': 8,
-                });
-
-                print(text.ok);
-
-
-                // print(test2?.locale);
-                // print(test2?.data);
-                // print(test2?.data['btnAddFile']);
-
-                return 'test';
-              }),
-              builder: (context, snapshot) => const Text('WyattI18n'),
-            ),
+        body: Builder(
+          builder: (ctx) => Center(
+            child: Text(ctx.i18n('youHavePushed', {'count': 654})),
           ),
         ),
-      );
+      ),
+    );
+  }
 }

packages/wyatt_i18n/example/pubspec.yaml

@@ -1,15 +1,16 @@
 name: wyatt_i18n_example
 description: A new Flutter project.
 version: 1.0.0
-publish_to: 'none'
+publish_to: "none"
 environment:
   sdk: ">=2.19.0 <3.0.0"
 dependencies:
-  flutter: {sdk: flutter}
+  flutter: { sdk: flutter }
+  flutter_localizations: { sdk: flutter }
   wyatt_i18n:
     path: "../"
 dev_dependencies:
-  flutter_test: {sdk: flutter}
+  flutter_test: { sdk: flutter }
   wyatt_analysis:
     hosted: https://git.wyatt-studio.fr/api/packages/Wyatt-FOSS/pub
     version: ^2.4.0
@@ -17,4 +18,4 @@ dev_dependencies:
 flutter:
   uses-material-design: true
   assets:
-    - assets/
+    - assets/

packages/wyatt_i18n/lib/src/core/core.dart

@@ -16,4 +16,5 @@
 
 export 'enums/format.dart';
 export 'exceptions/exceptions.dart';
+export 'extensions/build_context_extension.dart';
 export 'utils/utils.dart';

packages/wyatt_i18n/lib/src/core/extensions/build_context_extension.dart

@@ -0,0 +1,36 @@
+// Copyright (C) 2023 WYATT GROUP
+// Please see the AUTHORS file for details.
+//
+// This program is free software: you can redistribute it and/or modify
+// it under the terms of the GNU General Public License as published by
+// the Free Software Foundation, either version 3 of the License, or
+// any later version.
+//
+// This program is distributed in the hope that it will be useful,
+// but WITHOUT ANY WARRANTY; without even the implied warranty of
+// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+// GNU General Public License for more details.
+//
+// You should have received a copy of the GNU General Public License
+// along with this program. If not, see <https://www.gnu.org/licenses/>.
+
+import 'package:flutter/widgets.dart';
+import 'package:wyatt_i18n/wyatt_i18n.dart';
+
+/// Provides extensions for [BuildContext].
+extension BuildContextExtension on BuildContext {
+  /// Returns the current locale of the app.
+  String get locale => Localizations.localeOf(this).languageCode;
+
+  /// Returns the current [I18n] instance.
+  ///
+  /// Throws a [NotLoadedException] if the [I18n] instance is not loaded.
+  I18n get i18n {
+    final i18n = Localizations.of<I18n>(this, I18n);
+    if (i18n == null) {
+      throw NotLoadedException();
+    }
+
+    return i18n;
+  }
+}

packages/wyatt_i18n/lib/src/presentation/i18n_delegate.dart

@@ -0,0 +1,51 @@
+// Copyright (C) 2023 WYATT GROUP
+// Please see the AUTHORS file for details.
+//
+// This program is free software: you can redistribute it and/or modify
+// it under the terms of the GNU General Public License as published by
+// the Free Software Foundation, either version 3 of the License, or
+// any later version.
+//
+// This program is distributed in the hope that it will be useful,
+// but WITHOUT ANY WARRANTY; without even the implied warranty of
+// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+// GNU General Public License for more details.
+//
+// You should have received a copy of the GNU General Public License
+// along with this program. If not, see <https://www.gnu.org/licenses/>.
+
+import 'package:flutter/cupertino.dart';
+import 'package:wyatt_i18n/wyatt_i18n.dart';
+
+/// {@template i18n_delegate}
+/// A [LocalizationsDelegate] that loads the [I18n] instance.
+/// {@endtemplate}
+class I18nDelegate extends LocalizationsDelegate<I18n> {
+  /// {@macro i18n_delegate}
+  I18nDelegate({
+    required this.repository,
+  });
+
+  /// The [I18nRepository] that will be used to load the i18n file.
+  final I18nRepository repository;
+
+  /// The current locale.
+  Locale? currentLocale;
+
+  /// Since we are using the [I18nRepository] to load the i18n file,
+  /// we don't need to check if the locale is supported.
+  /// We can just return `true`.
+  @override
+  bool isSupported(Locale locale) => true;
+
+  @override
+  Future<I18n> load(Locale locale) async {
+    await repository.load(locale: locale.languageCode);
+
+    return I18n(i18nRepository: repository);
+  }
+
+  @override
+  bool shouldReload(I18nDelegate old) =>
+      currentLocale != null || currentLocale != old.currentLocale;
+}

packages/wyatt_i18n/lib/src/src.dart

@@ -17,3 +17,4 @@
 export 'core/core.dart';
 export 'data/data.dart';
 export 'domain/domain.dart';
+export 'presentation/i18n_delegate.dart';