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July 14, 2022 08:55
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同时处理受控和非受控组件
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import { SetStateAction, useCallback, useReducer, useRef } from 'react'; | |
// useControlValue | |
// 同时处理受控和非受控组件 | |
// based on https://github.com/alibaba/hooks/blob/master/packages/hooks/src/useControllableValue/index.ts | |
function useControlValue<V = any>(props: Record<string, any> = {}) { | |
const isControlled = 'value' in props; | |
// value | |
const value = useRef<V>(); | |
const hasValueInit = useRef(false); | |
if (isControlled && value.current !== props.value) { | |
value.current = props.value; | |
} else if (!hasValueInit.current) { | |
value.current = props.defaultValue; | |
} | |
hasValueInit.current = true; | |
// setValue | |
const [, uncontrolledUpdate] = useReducer((s) => !s, false); | |
const onChangeRef = useRef(props.onChange); | |
onChangeRef.current = props.onChange; | |
const setValue = useCallback( | |
(v: SetStateAction<V>) => { | |
value.current = v instanceof Function ? v(value.current as V) : v; | |
onChangeRef.current?.(value.current); | |
if (!isControlled) uncontrolledUpdate(); | |
}, | |
[isControlled] | |
); | |
return [value.current, setValue] as const; | |
} | |
export default useControlValue; |
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