Created
March 1, 2020 09:18
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import { useState, useCallback } from 'react'; | |
type returnType = [CheckItem[], (label: string) => void, () => void]; | |
function useCheckList(checkList: CheckItem[]): returnType { | |
const [list, setList] = useState(checkList); | |
const onCheckItem = useCallback((label: string) => { | |
setList(prevList => prevList.map(item => { | |
if (label === item.label) { | |
return { | |
...item, | |
checked: !item.checked, | |
}; | |
} | |
return item; | |
})); | |
}, []); | |
const checkAllItems = useCallback(() => { | |
/** | |
* 전체 체크하기를 눌렀을 때의 동작 | |
* 1. 체크되지 않은 아이템이 있을 경우 전체 체크 활성화 | |
* 2. 모두 체크돼있을 경우 전체 체크 해제 | |
*/ | |
setList(prevList => { | |
const targetStatus: boolean = !prevList.reduce( | |
(prev, cur) => prev && cur.checked, | |
true, | |
); | |
return prevList.map(item => ({ | |
...item, | |
checked: targetStatus, | |
})); | |
}); | |
}, []); | |
return [list, onCheckItem, checkAllItems]; | |
} | |
export default useCheckList; |
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