45 lines
1.4 KiB
JavaScript
45 lines
1.4 KiB
JavaScript
"use strict";
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var _interopRequireWildcard = require("@babel/runtime/helpers/interopRequireWildcard").default;
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var _interopRequireDefault = require("@babel/runtime/helpers/interopRequireDefault").default;
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Object.defineProperty(exports, "__esModule", {
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value: true
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});
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exports.default = useFrameState;
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var _raf = _interopRequireDefault(require("rc-util/lib/raf"));
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var _react = _interopRequireWildcard(require("react"));
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var React = _react;
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function useFrameState(defaultValue) {
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const [value, setValue] = React.useState(defaultValue);
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const frameRef = (0, _react.useRef)(null);
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const batchRef = (0, _react.useRef)([]);
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const destroyRef = (0, _react.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.default.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 = (0, _raf.default)(() => {
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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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} |