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