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LabWork03 Comments is done

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ПИбд-31 || Масенькин Максим 2024-09-13 00:51:36 +04:00
parent 3440713e50
commit 4913dc0fe7
11 changed files with 188 additions and 455 deletions
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116
lib/add_task_dialog.dart
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@ -1,116 +0,0 @@
import 'package:flutter/material.dart';
import 'package:provider/provider.dart';
import 'task_provider.dart';
import 'task_model.dart';
import 'package:intl/intl.dart';
class AddTaskDialog extends StatefulWidget {
@override
_AddTaskDialogState createState() => _AddTaskDialogState();
}
class _AddTaskDialogState extends State<AddTaskDialog> {
final _formKey = GlobalKey<FormState>();
String _title = '';
String? _description;
String? _category;
DateTime? _selectedDeadline;
TaskPriority _selectedPriority = TaskPriority.medium;
@override
Widget build(BuildContext context) {
return AlertDialog(
title: Text('Add New Task'),
content: Form(
key: _formKey,
child: Column(
mainAxisSize: MainAxisSize.min,
children: [
TextFormField(
decoration: InputDecoration(labelText: 'Task Title*'),
validator: (value) {
if (value == null || value.isEmpty) {
return 'Please enter a task title';
}
return null;
},
onSaved: (value) {
_title = value ?? '';
},
),
TextFormField(
decoration: InputDecoration(labelText: 'Description (optional)'),
onSaved: (value) {
_description = value;
},
),
TextFormField(
decoration: InputDecoration(labelText: 'Category (optional)'),
onSaved: (value) {
_category = value;
},
),
SizedBox(height: 20),
Text('Deadline: ${_selectedDeadline != null ? DateFormat('yMMMd').format(_selectedDeadline!) : 'No deadline'}'),
ElevatedButton(
child: Text('Select Deadline'),
onPressed: () => _selectDeadline(context),
),
DropdownButton<TaskPriority>(
value: _selectedPriority,
onChanged: (TaskPriority? newValue) {
setState(() {
_selectedPriority = newValue!;
});
},
items: TaskPriority.values.map((TaskPriority priority) {
return DropdownMenuItem<TaskPriority>(
value: priority,
child: Text(priority.toString().split('.').last),
);
}).toList(),
),
],
),
),
actions: [
TextButton(
child: Text('Cancel'),
onPressed: () {
Navigator.of(context).pop();
},
),
ElevatedButton(
child: Text('Add Task'),
onPressed: () {
if (_formKey.currentState!.validate()) {
_formKey.currentState!.save();
Provider.of<TaskProvider>(context, listen: false).addTask(
title: _title,
description: _description,
category: _category,
deadline: _selectedDeadline,
priority: _selectedPriority,
);
Navigator.of(context).pop();
}
},
),
],
);
}
Future<void> _selectDeadline(BuildContext context) async {
final DateTime? picked = await showDatePicker(
context: context,
initialDate: DateTime.now(),
firstDate: DateTime.now(),
lastDate: DateTime(2100),
);
if (picked != null) {
setState(() {
_selectedDeadline = picked;
});
}
}
}

11
lib/comment_model.dart Normal file
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@ -0,0 +1,11 @@
class CommentModel {
final String title;
final String text;
final String? imageUrl;
CommentModel({
required this.title,
required this.text,
this.imageUrl,
});
}

119
lib/comments_widget.dart Normal file
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@ -0,0 +1,119 @@
import 'package:flutter/material.dart';
import 'comment_model.dart';
class CommentsWidget extends StatelessWidget {
const CommentsWidget({super.key});
@override
Widget build(BuildContext context) {
final data = [
CommentModel(
title: 'Oh my god',
text: 'this app is so cool ' * 10,
imageUrl:
'https://preview.free3d.com/img/2016/03/1875481443430303321/hld8c0oa.jpg',
),
CommentModel(
title: 'Listen to me',
text: 'This app is like Half-Life 3 - it will never be released',
imageUrl:
'https://us-tuna-sounds-images.voicemod.net/356aeabd-18d5-40d8-af31-b479f4eff183-1704672174928.png',
),
CommentModel(
title: 'BREAKING!!!',
text: 'The next lab work will have DLC in the form of likes',
imageUrl: 'https://i.playground.ru/p/BWixorSTeZQfoPvdVL9lgA.jpeg',
),
CommentModel(
title: 'Test',
text: 'Test',
),
CommentModel(
title: 'Test',
text: 'Test',
),
];
return SingleChildScrollView(
child: Column(
mainAxisAlignment: MainAxisAlignment.center,
children: data.map((e) => _Comment.fromData(e)).toList(),
),
);
}
}
class _Comment extends StatelessWidget {
final String title;
final String text;
final String? imageUrl;
const _Comment({
required this.title,
required this.text,
this.imageUrl,
});
factory _Comment.fromData(CommentModel model) => _Comment(
title: model.title,
text: model.text,
imageUrl: model.imageUrl,
);
@override
Widget build(BuildContext context) {
return Container(
margin: const EdgeInsets.all(16),
padding: const EdgeInsets.all(16),
decoration: BoxDecoration(
color: Colors.white70,
borderRadius: BorderRadius.circular(16),
border: Border.all(color: Colors.grey),
boxShadow: [
BoxShadow(
color: Colors.grey.withOpacity(.5),
spreadRadius: 4,
offset: const Offset(0, 5),
blurRadius: 8,
),
],
),
child: Row(
crossAxisAlignment: CrossAxisAlignment.start,
children: [
ClipRRect(
borderRadius: BorderRadius.circular(20),
child: SizedBox(
height: 140,
width: 100,
child: Image.network(
imageUrl ?? '',
fit: BoxFit.cover,
errorBuilder: (_, __, ___) => const Placeholder(),
),
),
),
Expanded(
child: Padding(
padding: const EdgeInsets.only(left: 16.0),
child: Column(
crossAxisAlignment: CrossAxisAlignment.start,
children: [
Text(
title,
style: Theme.of(context).textTheme.headlineLarge,
),
Text(
text,
style: Theme.of(context).textTheme.bodyLarge,
)
],
),
),
),
],
),
);
}
}

19
lib/datetime_extension.dart
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@ -1,19 +0,0 @@
extension DateTimeFormatting on DateTime {
// Форматирует дату как "DD/MM/YYYY"
String toFormattedDate() {
return "${this.day.toString().padLeft(2, '0')}/${this.month.toString().padLeft(2, '0')}/${this.year}";
}
// Форматирует как "x дней осталось"
String toDaysLeft() {
final now = DateTime.now();
final difference = this.difference(now).inDays;
if (difference < 0) {
return "Overdue by ${difference.abs()} days";
} else if (difference == 0) {
return "Due today";
} else {
return "Due in $difference days";
}
}
}

72
lib/main.dart
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@ -1,29 +1,73 @@
import 'dart:math';
import 'package:flutter/material.dart'; import 'package:flutter/material.dart';
import 'package:provider/provider.dart';
import 'task_provider.dart'; import 'comments_widget.dart';
import 'task_list_screen.dart';
void main() { void main() {
runApp( runApp(const MyApp());
MultiProvider(
providers: [
ChangeNotifierProvider(create: (_) => TaskProvider()),
],
child: 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: 'ToDo List', title: 'Comments App',
debugShowCheckedModeBanner: false, debugShowCheckedModeBanner: false,
theme: ThemeData( theme: ThemeData(
primarySwatch: Colors.blue, colorScheme: ColorScheme.fromSeed(seedColor: Colors.blue),
useMaterial3: true,
), ),
home: TaskListScreen(), home: const MyHomePage(title: 'Comments App'),
);
}
}
class MyHomePage extends StatefulWidget {
const MyHomePage({super.key, required this.title});
final String title;
@override
State<MyHomePage> createState() => _MyHomePageState();
}
class _MyHomePageState extends State<MyHomePage> {
Color _color = Colors.transparent;
@override
void initState() {
super.initState();
_color = Color((Random().nextDouble() * 0xFFFFFF).toInt()).withOpacity(1.0);
}
@override
Widget build(BuildContext context) {
return Scaffold(
appBar: AppBar(
backgroundColor: _color,
title: Column(
crossAxisAlignment: CrossAxisAlignment.start,
children: [
Text(
widget.title,
style: TextStyle(
fontSize: 20,
fontWeight: FontWeight.bold,
)),
Text(
'made by Factorino',
style: TextStyle(
fontSize: 12,
fontStyle: FontStyle.italic,
),
),
],
),
),
body: const CommentsWidget(),
); );
} }
} }

55
lib/task_details_screen.dart
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@ -1,55 +0,0 @@
import 'package:flutter/material.dart';
import 'task_model.dart';
import 'datetime_extension.dart';
class TaskDetailsScreen extends StatelessWidget {
final Task task;
TaskDetailsScreen({required this.task});
@override
Widget build(BuildContext context) {
return Scaffold(
appBar: AppBar(
title: Text(task.title),
),
body: Padding(
padding: const EdgeInsets.all(16.0),
child: Column(
crossAxisAlignment: CrossAxisAlignment.start,
children: [
Text(
'Category: ${task.category ?? 'Not specified'}',
style: TextStyle(fontSize: 16),
),
SizedBox(height: 8),
Text(
'Priority: ${task.priority.name}',
style: TextStyle(fontSize: 16),
),
SizedBox(height: 8),
Text(
'Deadline: ${task.deadline != null ? task.deadline!.toFormattedDate() : 'No deadline'}',
style: TextStyle(fontSize: 16),
),
SizedBox(height: 16),
Text(
'Description:',
style: TextStyle(fontSize: 18, fontWeight: FontWeight.bold),
),
SizedBox(height: 8),
Text(
task.description ?? 'No description available',
style: TextStyle(fontSize: 16),
),
SizedBox(height: 16),
Text(
'Completed: ${task.isCompleted ? "Yes" : "No"}',
style: TextStyle(fontSize: 16),
),
],
),
),
);
}
}

108
lib/task_list_screen.dart
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@ -1,108 +0,0 @@
import 'dart:math';
import 'package:flutter/material.dart';
import 'package:provider/provider.dart';
import 'task_provider.dart';
import 'task_details_screen.dart';
import 'add_task_dialog.dart';
import 'task_model.dart';
import 'datetime_extension.dart';
class TaskListScreen extends StatefulWidget {
@override
_TaskListScreenState createState() => _TaskListScreenState();
}
class _TaskListScreenState extends State<TaskListScreen> {
Color _color = Colors.transparent;
@override
void initState() {
super.initState();
Provider.of<TaskProvider>(context, listen: false).loadTasks();
_color =
Color((Random().nextDouble() * 0xFFFFFF).toInt()).withOpacity(1.0);
}
@override
Widget build(BuildContext context) {
return Scaffold(
appBar: AppBar(
backgroundColor: _color,
title: Column(
crossAxisAlignment:
CrossAxisAlignment.start, // Чтобы текст выровнялся по левому краю
children: [
Text('ToDo List',
style: TextStyle(fontSize: 20, fontWeight: FontWeight.bold)),
Text(
'made by Factorino',
style: TextStyle(
fontSize: 12, // Размер шрифта для подписи
fontStyle: FontStyle.italic, // Сделаем текст курсивом
),
),
],
),
actions: [
IconButton(
icon: Icon(Icons.sort),
onPressed: () {
context.read<TaskProvider>().sortTasks();
},
),
],
),
body: Consumer<TaskProvider>(
builder: (context, taskProvider, child) {
if (taskProvider.tasks.isEmpty) {
return Center(child: Text('No tasks yet.'));
}
return ListView.builder(
itemCount: taskProvider.tasks.length,
itemBuilder: (context, index) {
Task task = taskProvider.tasks[index];
return ListTile(
title: Text(task.title),
subtitle: Text(
'${task.category ?? 'No category'} - ${task.deadline?.toFormattedDate() ?? 'No deadline'}'),
trailing: Checkbox(
value: task.isCompleted,
onChanged: (value) {
context.read<TaskProvider>().toggleTaskCompletion(task);
},
),
onTap: () {
// Открываем экран с деталями задачи
Navigator.push(
context,
MaterialPageRoute(
builder: (context) => TaskDetailsScreen(task: task),
),
);
},
onLongPress: () {
context.read<TaskProvider>().removeTask(task);
},
);
},
);
},
),
floatingActionButton: FloatingActionButton(
onPressed: () => _openAddTaskDialog(context),
backgroundColor: _color,
child: Icon(Icons.add),
),
);
}
void _openAddTaskDialog(BuildContext context) {
showDialog(
context: context,
builder: (BuildContext context) {
return AddTaskDialog();
},
);
}
}

23
lib/task_model.dart
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@ -1,23 +0,0 @@
enum TaskPriority {
low,
medium,
high
}
class Task {
final String title;
final String? description;
final String? category;
final DateTime? deadline;
bool isCompleted;
TaskPriority priority;
Task({
required this.title,
this.description,
this.category,
this.deadline,
this.isCompleted = false,
this.priority = TaskPriority.medium,
});
}

94
lib/task_provider.dart
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@ -1,94 +0,0 @@
import 'package:flutter/material.dart';
import 'task_model.dart';
class TaskProvider with ChangeNotifier {
List<Task> _tasks = <Task>[];
List<Task> get tasks => _tasks;
// Добавление задачи
void addTask({
required String title,
String? description,
String? category,
DateTime? deadline,
TaskPriority priority = TaskPriority.medium,
}) {
final task = Task(
title: title,
description: description,
category: category,
deadline: deadline,
priority: priority,
);
_tasks.add(task);
notifyListeners();
}
// Удаление задачи
void removeTask(Task task) {
_tasks.remove(task);
notifyListeners();
}
// Изменение состояния задачи
void toggleTaskCompletion(Task task) {
task.isCompleted = !task.isCompleted;
notifyListeners();
}
// Сортировка задач по приоритету и дедлайну
void sortTasks() {
_tasks.sort((a, b) {
// Сравнение по приоритету
if (a.priority == b.priority) {
// Если оба дедлайна не null, сравниваем их
if (a.deadline != null && b.deadline != null) {
return a.deadline!.compareTo(b.deadline!);
}
// Если у одной задачи нет дедлайна, она считается "позднее"
if (a.deadline == null) return 1; // Задачи без дедлайна позже
if (b.deadline == null) return -1; // Задачи с дедлайном раньше
return 0;
}
// Сравнение по приоритету
return a.priority.index.compareTo(b.priority.index);
});
notifyListeners();
}
// Метод для завершения всех задач
void completeAllTasks() {
for (var task in _tasks) {
task.isCompleted = true;
}
notifyListeners();
}
// Асинхронная загрузка задач
Future<void> loadTasks() async {
if (_tasks.isEmpty) {
_tasks = [
Task(
title: "Task 1",
category: "Work",
deadline: DateTime.now().add(Duration(days: 1)),
priority: TaskPriority.high),
Task(
title: "Task 2",
category: "Home",
deadline: DateTime.now().add(Duration(days: 2)),
priority: TaskPriority.medium),
Task(
title: "Task 3",
description: "Optional description",
priority: TaskPriority.low),
Task(
title: "Task 4",
category: "Personal",
priority: TaskPriority.high),
];
}
notifyListeners();
}
}

24
pubspec.lock
View File

@ -75,14 +75,6 @@ packages:
description: flutter description: flutter
source: sdk source: sdk
version: "0.0.0" version: "0.0.0"
intl:
dependency: "direct main"
description:
name: intl
sha256: "910f85bce16fb5c6f614e117efa303e85a1731bb0081edf3604a2ae6e9a3cc91"
url: "https://pub.dev"
source: hosted
version: "0.17.0"
leak_tracker: leak_tracker:
dependency: transitive dependency: transitive
description: description:
@ -139,14 +131,6 @@ packages:
url: "https://pub.dev" url: "https://pub.dev"
source: hosted source: hosted
version: "1.15.0" version: "1.15.0"
nested:
dependency: transitive
description:
name: nested
sha256: "03bac4c528c64c95c722ec99280375a6f2fc708eec17c7b3f07253b626cd2a20"
url: "https://pub.dev"
source: hosted
version: "1.0.0"
path: path:
dependency: transitive dependency: transitive
description: description:
@ -155,14 +139,6 @@ packages:
url: "https://pub.dev" url: "https://pub.dev"
source: hosted source: hosted
version: "1.9.0" version: "1.9.0"
provider:
dependency: "direct main"
description:
name: provider
sha256: c8a055ee5ce3fd98d6fc872478b03823ffdb448699c6ebdbbc71d59b596fd48c
url: "https://pub.dev"
source: hosted
version: "6.1.2"
sky_engine: sky_engine:
dependency: transitive dependency: transitive
description: flutter description: flutter

2
pubspec.yaml
View File

@ -30,8 +30,6 @@ environment:
dependencies: dependencies:
flutter: flutter:
sdk: flutter sdk: flutter
provider: ^6.0.0
intl: ^0.17.0
# The following adds the Cupertino Icons font to your application. # The following adds the Cupertino Icons font to your application.