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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,52 @@ | ||
| import React, { useContext, useMemo } from 'react'; | ||
| import { TodosContext } from './TodosContext'; | ||
| import { Filter } from '../Types/Filter'; | ||
| import classNames from 'classnames'; | ||
|
|
||
| export const Footer: React.FC = () => { | ||
| const { todos, setTodos, filter, setFilter } = useContext(TodosContext); | ||
|
|
||
| const countActiveTodo = useMemo(() => { | ||
| return todos.reduce((count, todo) => count + Number(!todo.completed), 0); | ||
| }, [todos]); | ||
|
|
||
| const handleClearCompleted = () => { | ||
| const clearedTodos = [...todos].filter(todo => !todo.completed); | ||
|
|
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| setTodos(clearedTodos); | ||
| }; | ||
|
|
||
| return ( | ||
| <footer className="todoapp__footer" data-cy="Footer"> | ||
| <span className="todo-count" data-cy="TodosCounter"> | ||
| {countActiveTodo} items left | ||
| </span> | ||
|
|
||
| <nav className="filter" data-cy="Filter"> | ||
| {Object.keys(Filter).map(key => ( | ||
| <a | ||
| key={key} | ||
| href={`#/${Filter[key as keyof typeof Filter]}`} | ||
| className={classNames('filter__link', { | ||
| selected: filter === Filter[key as keyof typeof Filter], | ||
| })} | ||
| data-cy={`FilterLink${key}`} | ||
| onClick={() => setFilter(Filter[key as keyof typeof Filter])} | ||
| > | ||
| {key} | ||
| </a> | ||
| ))} | ||
| </nav> | ||
|
|
||
| <button | ||
| type="button" | ||
| className="todoapp__clear-completed" | ||
| data-cy="ClearCompletedButton" | ||
| onClick={handleClearCompleted} | ||
| disabled={todos.length === countActiveTodo} | ||
| > | ||
| Clear completed | ||
| </button> | ||
| </footer> | ||
| ); | ||
| }; |
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,75 @@ | ||
| import React, { useContext, useEffect, useMemo, useRef, useState } from 'react'; | ||
| import { TodosContext } from './TodosContext'; | ||
| import classNames from 'classnames'; | ||
|
|
||
| export const Header: React.FC = () => { | ||
| const { todos, setTodos } = useContext(TodosContext); | ||
|
|
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| const [value, setValue] = useState(''); | ||
|
|
||
| const formField = useRef<HTMLInputElement>(null); | ||
|
|
||
| useEffect(() => { | ||
| if (formField.current) { | ||
| formField.current.focus(); | ||
| } | ||
| }, [todos]); | ||
|
|
||
| const handleSubmit = (event: React.FormEvent<HTMLFormElement>) => { | ||
| event.preventDefault(); | ||
|
|
||
| if (!!value.trim().length) { | ||
| setTodos([ | ||
| ...todos, | ||
| { | ||
| id: +new Date(), | ||
| title: value.trim(), | ||
| completed: false, | ||
| }, | ||
| ]); | ||
|
|
||
| setValue(''); | ||
| } | ||
| }; | ||
|
|
||
| const isEveryTodoCompleted = useMemo( | ||
| () => todos.every(todo => todo.completed), | ||
| [todos], | ||
| ); | ||
|
|
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| const handleChangeCompleted = () => { | ||
| const changedTodos = [...todos].map(todo => ({ | ||
| ...todo, | ||
| completed: isEveryTodoCompleted ? false : true, | ||
| })); | ||
|
|
||
| setTodos(changedTodos); | ||
| }; | ||
|
|
||
| return ( | ||
| <header className="todoapp__header"> | ||
| {!!todos.length && ( | ||
| <button | ||
| type="button" | ||
| className={classNames('todoapp__toggle-all', { | ||
| active: isEveryTodoCompleted, | ||
| })} | ||
| data-cy="ToggleAllButton" | ||
| onClick={handleChangeCompleted} | ||
| /> | ||
| )} | ||
|
|
||
| <form onSubmit={handleSubmit}> | ||
| <input | ||
| data-cy="NewTodoField" | ||
| type="text" | ||
| className="todoapp__new-todo" | ||
| placeholder="What needs to be done?" | ||
| ref={formField} | ||
| value={value} | ||
| onChange={event => setValue(event.target.value)} | ||
| /> | ||
| </form> | ||
| </header> | ||
| ); | ||
| }; |
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