lab2

lib/CarEnums.dart

@@ -0,0 +1,25 @@
+// Enums
+enum CarBrand {
+  Toyota,
+  Ford,
+  BMW,
+  Mercedes,
+  Honda,
+  Tesla,
+}
+
+enum CarModel {
+  Corolla,
+  Mustang,
+  X5,
+  CClass,
+  Civic,
+  ModelS,
+}
+
+enum FuelType {
+  Petrol,
+  Diesel,
+  Electric,
+  Hybrid,
+}

lib/car.dart

@@ -0,0 +1,45 @@
+import 'CarEnums.dart';
+
+// Classes
+class Car {
+  final CarBrand brand;
+  final CarModel model;
+  final int year;
+  final FuelType fuelType;
+  final String description;
+
+  Car({
+    required this.brand,
+    required this.model,
+    required this.year,
+    required this.fuelType,
+    required this.description,
+  });
+
+  // Methods
+  String printCar() {
+    return 'Brand: ${brand.toStringName()}, Model: ${model.toStringName()}, '
+        'Year: $year, Fuel Type: ${fuelType.toStringName()}, Description: $description';
+  }
+}
+
+// Extension for CarBrand
+extension CarBrandExtension on CarBrand {
+  String toStringName() {
+    return toString().split('.').last;
+  }
+}
+
+// Extension for CarModel
+extension CarModelExtension on CarModel {
+  String toStringName() {
+    return toString().split('.').last;
+  }
+}
+
+// Extension for FuelType
+extension FuelTypeExtension on FuelType {
+  String toStringName() {
+    return toString().split('.').last;
+  }
+}

lib/main.dart

@@ -1,6 +1,6 @@
-import 'dart:math';
-
 import 'package:flutter/material.dart';
+import 'car.dart';
+import 'CarEnums.dart';
 
 void main() {
   runApp(const MyApp());
@@ -12,67 +12,164 @@ class MyApp extends StatelessWidget {
   @override
   Widget build(BuildContext context) {
     return MaterialApp(
-      title: 'Flutter Demo',
+      title: 'Cars',
       theme: ThemeData(
-        colorScheme: ColorScheme.fromSeed(seedColor: Colors.deepOrange),
+        colorScheme: ColorScheme.fromSeed(seedColor: Colors.blue),
         useMaterial3: true,
       ),
-      home: const MyHomePage(title: 'Лобашов Иван Дмитриевич'),
+      home: const HomeScreen(),
+    );
+  }
+}
+class HomeScreen extends StatelessWidget {
+  const HomeScreen({super.key});
+
+  @override
+  Widget build(BuildContext context) {
+    return Scaffold(
+      appBar: AppBar(
+        title: const Text('Car Showroom'),
+      ),
+      body: Center(
+        child: InkWell(
+          onTap: () {
+            Navigator.push(
+              context,
+              MaterialPageRoute(
+                builder: (_) => const CarListScreen(),
+              ),
+            );
+          },
+          borderRadius: BorderRadius.circular(30),
+          child: Container(
+            padding: const EdgeInsets.symmetric(horizontal: 40, vertical: 20),
+            decoration: BoxDecoration(
+              gradient: const LinearGradient(
+                colors: [Colors.lightBlue, Colors.blue],
+                begin: Alignment.topLeft,
+                end: Alignment.bottomRight,
+              ),
+              borderRadius: BorderRadius.circular(30),
+              boxShadow: [
+                BoxShadow(
+                  color: Colors.black.withOpacity(0.2),
+                  blurRadius: 5,
+                  offset: const Offset(2, 2),
+                ),
+              ],
+            ),
+            child: const Text(
+              'Show Car List',
+              style: TextStyle(
+                fontSize: 28,
+                fontWeight: FontWeight.bold,
+                color: Colors.white,
+              ),
+            ),
+          ),
+        ),
+      ),
     );
   }
 }
 
-class MyHomePage extends StatefulWidget {
-  const MyHomePage({super.key, required this.title});
 
-  final String title;
+
+class CarListScreen extends StatefulWidget {
+  const CarListScreen({super.key});
 
   @override
-  State<MyHomePage> createState() => _MyHomePageState();
+  _CarListScreenState createState() => _CarListScreenState();
 }
 
-class _MyHomePageState extends State<MyHomePage> {
+class _CarListScreenState extends State<CarListScreen> {
-  int _counter = 0;
+  late Future<List<Car>> _carsFuture;
-  Color _color = Colors.orangeAccent;
 
-  void _incrementCounter() {
+  @override
-    setState(() {
+  void initState() {
-      _counter++;
+    super.initState();
-      _color = Color((Random().nextDouble() * 0xFFFFFF).toInt()).withOpacity(1.0);
+    _carsFuture = _fetchCars();
-    });
+  }
+
+  //Generics
+  Future<List<Car>> _fetchCars() async {
+    //Future
+    await Future.delayed(const Duration(seconds: 2));
+
+    final cars = [
+      Car(
+        brand: CarBrand.Toyota,
+        model: CarModel.Corolla,
+        year: 2021,
+        fuelType: FuelType.Petrol,
+        description: 'Норм тачка',
+      ),
+      Car(
+        brand: CarBrand.Tesla,
+        model: CarModel.ModelS,
+        year: 2023,
+        fuelType: FuelType.Electric,
+        description: 'Самая дорогая тачка',
+      ),
+      Car(
+        brand: CarBrand.BMW,
+        model: CarModel.X5,
+        year: 2022,
+        fuelType: FuelType.Hybrid,
+        description: 'Луксури машинка',
+      ),
+      Car(
+        brand: CarBrand.Mercedes,
+        model: CarModel.CClass,
+        year: 2020,
+        fuelType: FuelType.Diesel,
+        description: 'Мощная машинка',
+      ),
+    ];
+
+    // Loops
+    for (var car in cars) {
+      print(car.printCar());
+    }
+
+    return cars;
   }
 
   @override
   Widget build(BuildContext context) {
     return Scaffold(
       appBar: AppBar(
-        backgroundColor: _color,
+        title: const Text('Car List'),
-        title: Text(widget.title),
       ),
-      body: Center(
+      body: FutureBuilder<List<Car>>(
-        child: Column(
+        future: _carsFuture,
-          mainAxisAlignment: MainAxisAlignment.center,
+        builder: (context, snapshot) {
-          children: <Widget>[
+          if (snapshot.connectionState == ConnectionState.waiting) {
-            const Text(
+            return const Center(child: CircularProgressIndicator());
-              'You have pushed the button this many times:',
+          } else if (snapshot.hasError) {
-            ),
+            return Center(child: Text('Error: ${snapshot.error}'));
-            Text(
+          } else if (!snapshot.hasData || snapshot.data!.isEmpty) {
-              '$_counter',
+            return const Center(child: Text('No cars found.'));
-              style: Theme.of(context).textTheme.headlineMedium,
+          } else {
-            ),
+            final cars = snapshot.data!;
-            if (_counter > 6)
+            return ListView.builder(
-              Text(
+              itemCount: cars.length,
-                'You pipipupu',
+              itemBuilder: (context, index) {
-                style: Theme.of(context).textTheme.headlineMedium,
+                return ListTile(
-              ),
+                  title: Text(
-          ],
+                    cars[index].brand.toString().split('.').last,
-        ),
+                    style: const TextStyle(fontSize: 34),
+                  ),
+                  subtitle: Text(
+                    '${cars[index].model.toString().split('.').last} - ${cars[index].year}\n${cars[index].description}',
+                    style: const TextStyle(fontSize: 26),
+                  ),
+                );
+              },
+            );
+          }
+        },
       ),
-      floatingActionButton: FloatingActionButton(
+    );
-        onPressed: _incrementCounter,
-        backgroundColor: _color,
-        tooltip: 'Increment',
-        child: const Icon(Icons.add),
-      ),     );
   }
-}
+}