wt1.1a flutter_bloc

lib/bloc/settings/settings_bloc.dart

@@ -0,0 +1,55 @@
+import 'dart:async';
+
+import 'package:aitrainer_app/localization/app_language.dart';
+import 'package:aitrainer_app/localization/app_localization.dart';
+import 'package:bloc/bloc.dart';
+import 'package:equatable/equatable.dart';
+import 'package:flutter/cupertino.dart';
+import 'package:meta/meta.dart';
+
+part 'settings_event.dart';
+part 'settings_state.dart';
+
+class SettingsBloc extends Bloc<SettingsEvent, SettingsState> {
+  String language;
+  Locale _locale;
+  BuildContext context;
+
+  SettingsBloc({this.context}) : super(SettingsInitial());
+
+  @override
+  Stream<SettingsState> mapEventToState(
+    SettingsEvent event,
+  ) async* {
+    if (event is SettingsChangeLanguage) {
+      yield SettingsLoading();
+      await _changeLang( event.language);
+      yield SettingsReady(_locale);
+    }
+  }
+
+  Future<void> _changeLang( String lang ) async{
+
+    switch ( lang ) {
+      case "English":
+      case "Angol":
+        _locale = Locale('en');
+        break;
+      case "Hungarian":
+      case "Magyar":
+        _locale = Locale('hu');
+        break;
+    }
+    this.language = lang;
+    await loadLang();
+  }
+
+  Future<void> loadLang() async{
+    final AppLanguage appLanguage = AppLanguage();
+    appLanguage.changeLanguage(_locale);
+    if ( context != null ) {
+      AppLocalizations.of(context).setLocale(_locale);
+      await AppLocalizations.of(context).load();
+    }
+  }
+}

lib/bloc/settings/settings_event.dart

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+part of 'settings_bloc.dart';
+
+@immutable
+abstract class SettingsEvent extends Equatable {
+  const SettingsEvent();
+  @override
+  List<Object> get props => [];
+}
+
+class SettingsChangeLanguage extends SettingsEvent {
+  final String language;
+  const SettingsChangeLanguage({this.language});
+}

lib/bloc/settings/settings_state.dart

@@ -0,0 +1,46 @@
+part of 'settings_bloc.dart';
+
+@immutable
+abstract class SettingsState extends Equatable {
+  const SettingsState();
+
+  @override
+  List<Object> get props => [];
+}
+
+// ignore: must_be_immutable
+class SettingsInitial extends SettingsState {
+  Locale locale;
+  SettingsInitial();
+
+  setLocale(locale) {
+    this.locale = locale;
+  }
+
+  @override
+  List<Object> get props => [locale];
+}
+
+class SettingsLoading extends SettingsState {
+  final Locale locale;
+  const SettingsLoading({this.locale});
+
+  @override
+  List<Object> get props => [locale];
+}
+
+class SettingsReady extends SettingsState {
+  final Locale locale;
+  const SettingsReady(this.locale);
+
+  @override
+  List<Object> get props => [locale];
+}
+
+class SettingsError extends SettingsState {
+  final String message;
+  const SettingsError(this.message);
+
+  @override
+  List<Object> get props => [message];
+}