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samples/veggieseasons/lib/main.dart

252 lines
7.6 KiB

// Copyright 2018 The Flutter team. All rights reserved.
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.
import 'dart:io';
import 'package:flutter/cupertino.dart';
import 'package:flutter/foundation.dart';
import 'package:flutter/services.dart' show DeviceOrientation, SystemChrome;
import 'package:go_router/go_router.dart';
import 'package:provider/provider.dart';
import 'package:veggieseasons/data/app_state.dart';
import 'package:veggieseasons/data/preferences.dart';
import 'package:veggieseasons/screens/home.dart';
import 'package:veggieseasons/styles.dart';
import 'package:veggieseasons/widgets/fade_transition_page.dart';
import 'package:window_size/window_size.dart';
import 'screens/details.dart';
import 'screens/favorites.dart';
import 'screens/list.dart';
import 'screens/search.dart';
import 'screens/settings.dart';
void main() {
WidgetsFlutterBinding.ensureInitialized();
SystemChrome.setPreferredOrientations([
DeviceOrientation.portraitUp,
DeviceOrientation.portraitDown,
]);
setupWindow();
runApp(
const RootRestorationScope(
restorationId: 'root',
child: VeggieApp(),
),
);
}
const double windowWidth = 480;
const double windowHeight = 854;
void setupWindow() {
if (!kIsWeb && (Platform.isWindows || Platform.isLinux || Platform.isMacOS)) {
setWindowTitle('Veggie Seasons');
setWindowMinSize(const Size(windowWidth, windowHeight));
setWindowMaxSize(const Size(windowWidth, windowHeight));
getCurrentScreen().then((screen) {
setWindowFrame(Rect.fromCenter(
center: screen!.frame.center,
width: windowWidth,
height: windowHeight,
));
});
}
}
final _rootNavigatorKey = GlobalKey<NavigatorState>();
final _shellNavigatorKey = GlobalKey<NavigatorState>();
class VeggieApp extends StatefulWidget {
const VeggieApp({super.key});
@override
State<StatefulWidget> createState() => _VeggieAppState();
}
class _VeggieAppState extends State<VeggieApp> with RestorationMixin {
final _RestorableAppState _appState = _RestorableAppState();
@override
String get restorationId => 'wrapper';
@override
void restoreState(RestorationBucket? oldBucket, bool initialRestore) {
registerForRestoration(_appState, 'state');
}
@override
void dispose() {
_appState.dispose();
super.dispose();
}
@override
Widget build(BuildContext context) {
return MultiProvider(
providers: [
ChangeNotifierProvider.value(
value: _appState.value,
),
ChangeNotifierProvider(
create: (_) => Preferences()..load(),
),
],
child: CupertinoApp.router(
theme: Styles.veggieThemeData,
debugShowCheckedModeBanner: false,
restorationScopeId: 'app',
routerConfig: GoRouter(
navigatorKey: _rootNavigatorKey,
restorationScopeId: 'router',
initialLocation: '/list',
redirect: (context, state) {
if (state.path == '/') {
return '/list';
}
return null;
},
debugLogDiagnostics: true,
routes: [
ShellRoute(
navigatorKey: _shellNavigatorKey,
pageBuilder: (context, state, child) {
return CupertinoPage(
restorationId: 'router.shell',
child: HomeScreen(
restorationId: 'home',
child: child,
onTap: (index) {
if (index == 0) {
context.go('/list');
} else if (index == 1) {
context.go('/favorites');
} else if (index == 2) {
context.go('/search');
} else {
context.go('/settings');
}
},
),
);
},
routes: [
GoRoute(
path: '/list',
pageBuilder: (context, state) {
return FadeTransitionPage(
key: state.pageKey,
restorationId: 'route.list',
child: const ListScreen(restorationId: 'list'),
);
},
routes: [
_buildDetailsRoute(),
],
),
GoRoute(
path: '/favorites',
pageBuilder: (context, state) {
return FadeTransitionPage(
key: state.pageKey,
restorationId: 'route.favorites',
child: const FavoritesScreen(restorationId: 'favorites'),
);
},
routes: [
_buildDetailsRoute(),
],
),
GoRoute(
path: '/search',
pageBuilder: (context, state) {
return FadeTransitionPage(
key: state.pageKey,
restorationId: 'route.search',
child: const SearchScreen(restorationId: 'search'),
);
},
routes: [
_buildDetailsRoute(),
],
),
GoRoute(
path: '/settings',
pageBuilder: (context, state) {
return FadeTransitionPage(
key: state.pageKey,
restorationId: 'route.settings',
child: const SettingsScreen(restorationId: 'settings'),
);
},
routes: [
GoRoute(
parentNavigatorKey: _rootNavigatorKey,
path: 'categories',
pageBuilder: (context, state) {
return VeggieCategorySettingsScreen.pageBuilder(
context);
},
),
GoRoute(
parentNavigatorKey: _rootNavigatorKey,
path: 'calories',
pageBuilder: (context, state) {
return CalorieSettingsScreen.pageBuilder(context);
},
),
],
),
],
),
],
),
),
);
}
// GoRouter does not support relative routes,
// see https://github.com/flutter/flutter/issues/108177
GoRoute _buildDetailsRoute() {
return GoRoute(
parentNavigatorKey: _rootNavigatorKey,
path: 'details/:id',
pageBuilder: (context, state) {
final veggieId = int.parse(state.params['id']!);
return CupertinoPage(
restorationId: 'route.details',
fullscreenDialog: true,
child: DetailsScreen(
id: veggieId,
restorationId: 'details',
),
);
},
);
}
}
class _RestorableAppState extends RestorableListenable<AppState> {
@override
AppState createDefaultValue() {
return AppState();
}
@override
AppState fromPrimitives(Object? data) {
final appState = AppState();
final favorites = (data as List<dynamic>).cast<int>();
for (var id in favorites) {
appState.setFavorite(id, true);
}
return appState;
}
@override
Object toPrimitives() {
return value.favoriteVeggies.map((veggie) => veggie.id).toList();
}
}