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Commit 60a6e4e7 authored by juseong ahn's avatar juseong ahn
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Delete main.dart

parent 879387c9
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import 'package:english_words/english_words.dart';
import 'package:flutter/material.dart';
import 'package:flutter/rendering.dart';
import 'package:provider/provider.dart';
void main() {
runApp(MyApp());
}
class MyApp extends StatelessWidget {
const MyApp({super.key});
@override
Widget build(BuildContext context) {
return ChangeNotifierProvider(
create: (context) => MyAppState(),
child: MaterialApp(
title: 'Namer App',
theme: ThemeData(
useMaterial3: true,
colorScheme: ColorScheme.fromSeed(seedColor: Colors.yellow),
),
home: MyHomePage(),
),
);
}
}
class MyAppState extends ChangeNotifier {
var current = WordPair.random();
void getNext() {
current = WordPair.random();
notifyListeners();
}
// ↓ Add the code below.
var favorites = <WordPair>[];
void toggleFavorite() {
if (favorites.contains(current)) {
favorites.remove(current);
} else {
favorites.add(current);
}
notifyListeners();
}
}
class MyHomePage extends StatefulWidget {
@override
State<MyHomePage> createState() => _MyHomePageState();
}
class _MyHomePageState extends State<MyHomePage> {
var selectedIndex = 0; // ← Add this property.
@override
Widget build(BuildContext context) {
Widget page;
switch (selectedIndex) {
case 0:
page = GeneratorPage();
break;
case 1:
page = FavoritesPage();
break;
default:
throw UnimplementedError('no widget for $selectedIndex');
}
return LayoutBuilder(
builder: (context, constraints) {
return Scaffold(
body: Row(
children: [
SafeArea(
child: NavigationRail(
extended: constraints.maxWidth >= 600, // ← Here.
destinations: [
NavigationRailDestination(
icon: Icon(Icons.home),
label: Text('Home'),
),
NavigationRailDestination(
icon: Icon(Icons.favorite),
label: Text('Favorites'),
),
],
selectedIndex: selectedIndex, // ← Change to this.
onDestinationSelected: (value) {
// ↓ Replace print with this.
setState(() {
selectedIndex = value;
});
},
),
),
Expanded(
child: Container(
color: Theme.of(context).colorScheme.primaryContainer,
child: page, //GeneratorPage(),
),
),
],
),
);
}
);
}
}
class GeneratorPage extends StatelessWidget {
@override
Widget build(BuildContext context) {
var appState = context.watch<MyAppState>();
var pair = appState.current;
IconData icon;
if (appState.favorites.contains(pair)) {
icon = Icons.favorite;
} else {
icon = Icons.favorite_border;
}
return Center(
child: Column(
mainAxisAlignment: MainAxisAlignment.center,
children: [
BigCard(pair: pair),
SizedBox(height: 10),
Row(
mainAxisSize: MainAxisSize.min,
children: [
ElevatedButton.icon(
onPressed: () {
appState.toggleFavorite();
},
icon: Icon(icon),
label: Text('Like'),
),
SizedBox(width: 10),
ElevatedButton(
onPressed: () {
appState.getNext();
},
child: Text('Next'),
),
],
),
],
),
);
}
}
class BigCard extends StatelessWidget {
const BigCard({
super.key,
required this.pair,
});
final WordPair pair;
@override
Widget build(BuildContext context) {
final theme = Theme.of(context);
// ↓ Add this.
final style = theme.textTheme.displayMedium!.copyWith(
color: theme.colorScheme.onPrimary,
);
return Card(
color: theme.colorScheme.primary,
child: Padding(
padding: const EdgeInsets.all(20),
// ↓ Change this line.
child: Text(
pair.asLowerCase,
style: style,
semanticsLabel: "${pair.first} ${pair.second}",
),
),
);
}
}
class FavoritesPage extends StatelessWidget {
@override
Widget build(BuildContext context) {
var appState = context.watch<MyAppState>();
if (appState.favorites.isEmpty) {
return Center(
child: Text('(null)'),
);
}
return ListView(
children: [
Padding(
padding: const EdgeInsets.all(20),
child: Text('You have '
'${appState.favorites.length} favorites:'),
),
for (var pair in appState.favorites)
ListTile(
leading: Icon(Icons.favorite),
title: Text(pair.asLowerCase),
),
],
);
}
}
\ No newline at end of file
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