lab2

lib/CourseStatus.dart

@@ -0,0 +1,7 @@
+enum CourseStatus{
+  Math,
+  Physics,
+  Chemistry,
+  Biology,
+  ComputerScience,
+}

lib/ExtensionStudent.dart

@@ -0,0 +1,12 @@
+import 'CourseStatus.dart';
+import 'Student.dart';
+
+extension StudentCourseStatus on Student {
+  String getCourseStatus(String course) {
+    if (courses.contains(course)) {
+      return "Студент присутствует на этих курсах";
+    } else {
+      return "Студент отсутствует на этих курсах";
+    }
+  }
+}

lib/Student.dart

@@ -0,0 +1,12 @@
+class Student {
+  String name;
+  int age;
+  List<String> courses;
+
+  Student(this.name, this.age, this.courses);
+
+  void displayInfo() {
+    print('Name: $name, Age: $age');
+    print('Courses: ${courses.join(", ")}');
+  }
+}

lib/University.dart

@@ -0,0 +1,19 @@
+import 'student.dart';
+
+class University {
+  List<Student> students = [];
+
+  void addStudent(Student student) {
+    students.add(student);
+  }
+
+  void displayAllStudents() {
+    for (var student in students) {
+      student.displayInfo();
+    }
+  }
+
+  List<Student> getStudentsByCourse(String course) {
+    return students.where((student) => student.courses.contains(course)).toList();
+  }
+}

lib/main.dart

@@ -1,70 +1,126 @@
-import 'package:flutter/material.dart';
+import 'package:flutter/material.dart';
-
+import 'CourseStatus.dart';
-void main() {
+import 'University.dart';
-  runApp(const MyApp());
+import 'student.dart';
-}
+
-
+void main() {
-class MyApp extends StatelessWidget {
+  runApp(MyApp());
-  const MyApp({super.key});
+}
-
+
-    @override
+class MyApp extends StatelessWidget {
-  Widget build(BuildContext context) {
+  @override
-    return MaterialApp(
+  Widget build(BuildContext context) {
-      title: 'Flutter Demo',
+    return MaterialApp(
-      theme: ThemeData(
+      title: 'University App',
-                                                                                                                                colorScheme: ColorScheme.fromSeed(seedColor: Colors.deepPurple),
+      theme: ThemeData(
-        useMaterial3: true,
+        primarySwatch: Colors.blue,
-      ),
+      ),
-      home: const MyHomePage(title: 'Flutter Demo Home Page'),
+      home: UniversityScreen(),
-    );
+    );
-  }
+  }
-}
+}
-
+
-class MyHomePage extends StatefulWidget {
+class UniversityScreen extends StatefulWidget {
-  const MyHomePage({super.key, required this.title});
+  @override
-
+  _UniversityScreenState createState() => _UniversityScreenState();
-      
+}
-        
+
-  final String title;
+class _UniversityScreenState extends State<UniversityScreen> {
-
+  final University university = University();
-  @override
+  final TextEditingController nameController = TextEditingController();
-  State<MyHomePage> createState() => _MyHomePageState();
+  final TextEditingController ageController = TextEditingController();
-}
+  List<String> selectedCourses = [];
-
+
-class _MyHomePageState extends State<MyHomePage> {
+  void _addStudent() {
-  int _counter = 0;
+    String name = nameController.text;
-
+    int age = int.tryParse(ageController.text) ?? 0;
-  void _incrementCounter() {
+
-    setState(() {
+    if (name.isNotEmpty && age > 0 && selectedCourses.isNotEmpty) {
-                                    _counter++;
+      setState(() {
-    });
+        // Создаем новый список курсов для каждого студента
-  }
+        List<String> studentCourses = List.from(selectedCourses);
-
+        university.addStudent(Student(name, age, studentCourses));
-  @override
+        nameController.clear();
-  Widget build(BuildContext context) {
+        ageController.clear();
-                            return Scaffold(
+        selectedCourses.clear();
-      appBar: AppBar(
+      });
-                                backgroundColor: Theme.of(context).colorScheme.inversePrimary,
+    }
-                        title: Text(widget.title),
+  }
-      ),
+
-      body: Center(
+  @override
-                        child: Column(
+  Widget build(BuildContext context) {
-                                                                                                                                            mainAxisAlignment: MainAxisAlignment.center,
+    return Scaffold(
-          children: <Widget>[
+      appBar: AppBar(
-            const Text(
+        title: Text('Строев Владимир, ПИбд-32'),
-              'You have pushed the button this many times:',
+      ),
-            ),
+      body: Column(
-            Text(
+        children: [
-              '$_counter',
+          Padding(
-              style: Theme.of(context).textTheme.headlineMedium,
+            padding: const EdgeInsets.all(8.0),
-            ),
+            child: Column(
-          ],
+              children: [
-        ),
+                Text('Университет', style: TextStyle(fontSize: 24, fontWeight: FontWeight.bold)),
-      ),
+                SizedBox(height: 20),
-      floatingActionButton: FloatingActionButton(
+                TextField(
-        onPressed: _incrementCounter,
+                  controller: nameController,
-        tooltip: 'Increment',
+                  decoration: InputDecoration(labelText: 'Name'),
-        child: const Icon(Icons.add),
+                ),
-      ),     );
+                TextField(
-  }
+                  controller: ageController,
-}
+                  decoration: InputDecoration(labelText: 'Age'),
+                  keyboardType: TextInputType.number,
+                ),
+                DropdownButton<String>(
+                  value: selectedCourses.isNotEmpty ? selectedCourses.first : null,
+                  hint: Text('Select Courses'),
+                  onChanged: (String? newValue) {
+                    setState(() {
+                      if (newValue != null && !selectedCourses.contains(newValue)) {
+                        selectedCourses.add(newValue);
+                      }
+                    });
+                  },
+                  items: CourseStatus.values.map<DropdownMenuItem<String>>((CourseStatus value) {
+                    return DropdownMenuItem<String>(
+                      value: value.name,
+                      child: Text(value.name),
+                    );
+                  }).toList(),
+                ),
+                Wrap(
+                  spacing: 8.0,
+                  children: selectedCourses.map((course) {
+                    return Chip(
+                      label: Text(course),
+                      onDeleted: () {
+                        setState(() {
+                          selectedCourses.remove(course);
+                        });
+                      },
+                    );
+                  }).toList(),
+                ),
+                ElevatedButton(
+                  onPressed: _addStudent,
+                  child: Text('Add Student'),
+                ),
+              ],
+            ),
+          ),
+          Expanded(
+            child: ListView.builder(
+              itemCount: university.students.length,
+              itemBuilder: (context, index) {
+                Student student = university.students[index];
+                return ListTile(
+                  title: Text(student.name),
+                  subtitle: Text('Age: ${student.age}, Courses: ${student.courses.join(", ")}'),
+                );
+              },
+            ),
+          ),
+        ],
+      ),
+    );
+  }
+}