acud/es/form/hooks/useFrameState.js

acg react 组件库

import _slicedToArray from "@babel/runtime/helpers/esm/slicedToArray";
/**
 * @file updators throttled by every frame
 * @author chenqiang(chenqiang03)
 */
import * as React from 'react';
import raf from "rc-util/es/raf";
export default function useFrameState(defaultValue) {
  var _React$useState = React.useState(defaultValue),
    _React$useState2 = _slicedToArray(_React$useState, 2),
    value = _React$useState2[0],
    setValue = _React$useState2[1];
  var frameRef = React.useRef(null);
  var batchRef = React.useRef([]);
  var destoryRef = React.useRef(false);
  React.useEffect(function () {
    return function () {
      destoryRef.current = true;
      raf.cancel(frameRef.current);
    };
  }, []);
  function setFrameValue(updater) {
    if (destoryRef.current) {
      return;
    }
    if (frameRef.current === null) {
      batchRef.current = [];
      frameRef.current = raf(function () {
        frameRef.current = null;
        setValue(function (prevValue) {
          var current = prevValue;
          batchRef.current.forEach(function (func) {
            current = func(current);
          });
          return current;
        });
      });
    }
    batchRef.current.push(updater);
  }
  return [value, setFrameValue];
}