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@ -1,141 +1,71 @@
import 'package:flutter/material.dart'; import 'package:flutter/material.dart';
void main() { void main() {
runApp(MyApp()); runApp(const MyApp());
} }
class MyApp extends StatelessWidget { class MyApp extends StatelessWidget {
const MyApp({super.key});
@override @override
Widget build(BuildContext context) { Widget build(BuildContext context) {
return MaterialApp( return MaterialApp(
title: 'Рецепты', title: 'Flutter Demo',
theme: ThemeData( theme: ThemeData(
scaffoldBackgroundColor: Colors.purple[100], colorScheme: ColorScheme.fromSeed(seedColor: Colors.deepPurple),
useMaterial3: true,
), ),
home: RecipeHome(), home: const MyHomePage(title: 'Жирнова Алена Евгениевна'),
); );
} }
} }
enum Cuisine { Italian, Indian, Chinese, Georgian } class MyHomePage extends StatefulWidget {
const MyHomePage({super.key, required this.title});
class Recipe { final String title;
String name;
Cuisine cuisine;
List<String> ingredients;
Recipe({required this.name, required this.cuisine, required this.ingredients});
String getDetails() {
return 'Рецепт: $name\nКухня: ${cuisine.toString().split('.').last}\nИнгредиенты: ${ingredients.join(', ')}';
}
}
class RecipeManager<T extends Recipe> {
List<T> _recipes = [];
Future<void> addRecipe(T recipe) async {
await Future.delayed(Duration(seconds: 1));
_recipes.add(recipe);
}
List<T> getAllRecipes() => _recipes;
T? getRecipeAt(int index) {
if (index < _recipes.length) {
return _recipes[index];
}
return null;
}
}
extension RecipeListExtension<T extends Recipe> on List<T> {
void printAllRecipes() {
for (var recipe in this) {
print(recipe.getDetails());
}
}
}
class RecipeHome extends StatefulWidget {
@override @override
_RecipeHomeState createState() => _RecipeHomeState(); State<MyHomePage> createState() => _MyHomePageState();
} }
class _RecipeHomeState extends State<RecipeHome> { class _MyHomePageState extends State<MyHomePage> {
final RecipeManager<Recipe> _recipeManager = RecipeManager(); int _counter = 0;
final TextEditingController _nameController = TextEditingController();
final TextEditingController _ingredientsController = TextEditingController();
Cuisine? _selectedCuisine;
void _addRecipe() { void _incrementCounter() {
final name = _nameController.text; setState(() {
final ingredients = _ingredientsController.text.split(',').map((s) => s.trim()).toList(); _counter++;
});
if (name.isNotEmpty && ingredients.isNotEmpty && _selectedCuisine != null) {
final recipe = Recipe(name: name, cuisine: _selectedCuisine!, ingredients: ingredients);
_recipeManager.addRecipe(recipe).then((_) {
_nameController.clear();
_ingredientsController.clear();
_selectedCuisine = null;
setState(() {});
});
}
} }
@override @override
Widget build(BuildContext context) { Widget build(BuildContext context) {
return Scaffold( return Scaffold(
appBar: AppBar(title: Text('Создание Рецептов')), appBar: AppBar(
body: Padding( backgroundColor: Theme.of(context).colorScheme.inversePrimary,
padding: const EdgeInsets.all(16.0), title: Text(widget.title),
),
body: Center(
child: Column( child: Column(
children: [
TextField( mainAxisAlignment: MainAxisAlignment.center,
controller: _nameController, children: <Widget>[
decoration: InputDecoration(labelText: 'Название рецепта'), const Text(
'You have pushed the button this many times:',
), ),
DropdownButton<Cuisine>( Text(
hint: Text('Выберите кухню'), '$_counter',
value: _selectedCuisine, style: Theme.of(context).textTheme.headlineMedium,
onChanged: (Cuisine? newValue) {
setState(() {
_selectedCuisine = newValue;
});
},
items: Cuisine.values.map((Cuisine cuisine) {
return DropdownMenuItem<Cuisine>(
value: cuisine,
child: Text(cuisine.toString().split('.').last),
);
}).toList(),
),
TextField(
controller: _ingredientsController,
decoration: InputDecoration(labelText: 'Ингредиенты (через запятую)'),
),
SizedBox(height: 20),
ElevatedButton(
onPressed: _addRecipe,
child: Text('Добавить Рецепт'),
),
SizedBox(height: 20),
Expanded(
child: ListView.builder(
itemCount: _recipeManager.getAllRecipes().length,
itemBuilder: (context, index) {
final recipe = _recipeManager.getRecipeAt(index);
return ListTile(
title: Text(recipe?.name ?? 'Имеется ошибка'),
subtitle: Text(recipe?.getDetails() ?? ''),
);
},
),
), ),
], ],
), ),
), ),
floatingActionButton: FloatingActionButton(
onPressed: _incrementCounter,
tooltip: 'Increment',
child: const Icon(Icons.add),
),
); );
} }
} }