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78 lines
2.5 KiB
78 lines
2.5 KiB
// Copyright 2019 The Flutter team. All rights reserved.
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// Use of this source code is governed by a BSD-style license that can be
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// found in the LICENSE file.
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import 'dart:io';
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import 'package:flutter/foundation.dart';
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import 'package:flutter/material.dart';
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import 'package:provider/provider.dart';
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import 'package:provider_shopper/common/theme.dart';
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import 'package:provider_shopper/models/cart.dart';
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import 'package:provider_shopper/models/catalog.dart';
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import 'package:provider_shopper/screens/cart.dart';
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import 'package:provider_shopper/screens/catalog.dart';
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import 'package:provider_shopper/screens/login.dart';
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import 'package:window_size/window_size.dart';
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void main() {
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setupWindow();
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runApp(const MyApp());
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}
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const double windowWidth = 400;
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const double windowHeight = 800;
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void setupWindow() {
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if (!kIsWeb && (Platform.isWindows || Platform.isLinux || Platform.isMacOS)) {
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WidgetsFlutterBinding.ensureInitialized();
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setWindowTitle('Provider Demo');
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setWindowMinSize(const Size(windowWidth, windowHeight));
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setWindowMaxSize(const Size(windowWidth, windowHeight));
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getCurrentScreen().then((screen) {
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setWindowFrame(Rect.fromCenter(
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center: screen!.frame.center,
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width: windowWidth,
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height: windowHeight,
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));
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});
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}
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}
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class MyApp extends StatelessWidget {
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const MyApp({Key? key}) : super(key: key);
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@override
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Widget build(BuildContext context) {
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// Using MultiProvider is convenient when providing multiple objects.
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return MultiProvider(
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providers: [
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// In this sample app, CatalogModel never changes, so a simple Provider
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// is sufficient.
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Provider(create: (context) => CatalogModel()),
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// CartModel is implemented as a ChangeNotifier, which calls for the use
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// of ChangeNotifierProvider. Moreover, CartModel depends
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// on CatalogModel, so a ProxyProvider is needed.
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ChangeNotifierProxyProvider<CatalogModel, CartModel>(
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create: (context) => CartModel(),
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update: (context, catalog, cart) {
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if (cart == null) throw ArgumentError.notNull('cart');
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cart.catalog = catalog;
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return cart;
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},
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),
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],
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child: MaterialApp(
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title: 'Provider Demo',
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theme: appTheme,
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initialRoute: '/',
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routes: {
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'/': (context) => const MyLogin(),
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'/catalog': (context) => const MyCatalog(),
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'/cart': (context) => const MyCart(),
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},
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),
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);
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}
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}
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