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Original file line number | Diff line number | Diff line change |
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import { useLayoutEffect } from 'react'; | ||
import { useUpdateRef } from './useUpdateRef'; | ||
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/** | ||
* keydown hooks | ||
* 仅接受最初的函数 | ||
*/ | ||
export function useGlobalKeyDown(fn: (e: KeyboardEvent) => void) { | ||
const fnRef = useUpdateRef(fn); | ||
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useLayoutEffect(() => { | ||
const handleKeyDown = (e: KeyboardEvent) => { | ||
typeof fnRef.current === 'function' && fnRef.current(e); | ||
}; | ||
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window.addEventListener('keydown', handleKeyDown); | ||
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return () => { | ||
window.removeEventListener('keydown', handleKeyDown); | ||
}; | ||
}, []); | ||
} |
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Original file line number | Diff line number | Diff line change |
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import { useRef, MutableRefObject } from 'react'; | ||
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export function useUpdateRef<T>(state: T): MutableRefObject<T> { | ||
const ref = useRef<T>(state); | ||
ref.current = state; | ||
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return ref; | ||
} |
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