37 lines
1017 B
JavaScript
37 lines
1017 B
JavaScript
import raf from "rc-util/es/raf";
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import * as React from 'react';
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import { useRef } from 'react';
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export default function useFrameState(defaultValue) {
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const [value, setValue] = React.useState(defaultValue);
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const frameRef = useRef(null);
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const batchRef = useRef([]);
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const destroyRef = useRef(false);
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React.useEffect(() => {
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destroyRef.current = false;
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return () => {
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destroyRef.current = true;
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raf.cancel(frameRef.current);
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frameRef.current = null;
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};
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}, []);
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function setFrameValue(updater) {
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if (destroyRef.current) {
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return;
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}
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if (frameRef.current === null) {
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batchRef.current = [];
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frameRef.current = raf(() => {
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frameRef.current = null;
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setValue(prevValue => {
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let current = prevValue;
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batchRef.current.forEach(func => {
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current = func(current);
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});
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return current;
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});
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});
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}
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batchRef.current.push(updater);
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}
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return [value, setFrameValue];
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} |