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app.component.ts
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import { Component, OnInit } from '@angular/core';
import { TodoDataService } from './todo-data.service';
import { Todo } from './todo';
@Component({
selector: 'app-root',
templateUrl: './app.component.html',
styleUrls: ['./app.component.css'],
providers: [TodoDataService]
})
export class AppComponent implements OnInit {
todos: Todo[] = [];
constructor(
private todoDataService: TodoDataService
) {
}
public ngOnInit() {
this.todoDataService
.getAllTodos()
.subscribe(
(todos) => {
this.todos = todos;
}
);
}
onAddTodo(todo) {
this.todoDataService
.addTodo(todo)
.subscribe(
(newTodo) => {
this.todos = this.todos.concat(newTodo);
}
);
}
onToggleTodoComplete(todo) {
this.todoDataService
.toggleTodoComplete(todo)
.subscribe(
(updatedTodo) => {
todo = updatedTodo;
}
);
}
onRemoveTodo(todo) {
this.todoDataService
.deleteTodoById(todo.id)
.subscribe(
(_) => {
this.todos = this.todos.filter((t) => t.id !== todo.id);
}
);
}
}