vantui-edit/es/count-down/index.js

一套适用于Taro3及React的vantui组件库

import _defineProperty from "@babel/runtime/helpers/defineProperty";
import _objectWithoutProperties from "@babel/runtime/helpers/objectWithoutProperties";
import _slicedToArray from "@babel/runtime/helpers/slicedToArray";
var _excluded = ["time", "format", "autoStart", "millisecond", "onChange", "onFinish", "children", "style", "className"];

function ownKeys(object, enumerableOnly) { var keys = Object.keys(object); if (Object.getOwnPropertySymbols) { var symbols = Object.getOwnPropertySymbols(object); enumerableOnly && (symbols = symbols.filter(function (sym) { return Object.getOwnPropertyDescriptor(object, sym).enumerable; })), keys.push.apply(keys, symbols); } return keys; }

function _objectSpread(target) { for (var i = 1; i < arguments.length; i++) { var source = null != arguments[i] ? arguments[i] : {}; i % 2 ? ownKeys(Object(source), !0).forEach(function (key) { _defineProperty(target, key, source[key]); }) : Object.getOwnPropertyDescriptors ? Object.defineProperties(target, Object.getOwnPropertyDescriptors(source)) : ownKeys(Object(source)).forEach(function (key) { Object.defineProperty(target, key, Object.getOwnPropertyDescriptor(source, key)); }); } return target; }

import { useEffect, useState, useRef, forwardRef, useImperativeHandle, useCallback } from 'react';
import { View } from '@tarojs/components';
import { isSameSecond, parseFormat, parseTimeData } from './util';
import { Fragment as _Fragment } from "react/jsx-runtime";
import { jsx as _jsx } from "react/jsx-runtime";

function simpleTick(fn) {
  return setTimeout(fn, 30);
}

function Index(props, ref) {
  var _ref = useRef({
    tid: null,
    counting: false
  });

  var _useState = useState({
    formattedTime: '0'
  }),
      _useState2 = _slicedToArray(_useState, 2),
      state = _useState2[0],
      setState = _useState2[1];

  var formattedTime = state.formattedTime;

  var time = props.time,
      _props$format = props.format,
      format = _props$format === void 0 ? 'HH:mm:ss' : _props$format,
      _props$autoStart = props.autoStart,
      autoStart = _props$autoStart === void 0 ? true : _props$autoStart,
      millisecond = props.millisecond,
      onChange = props.onChange,
      onFinish = props.onFinish,
      children = props.children,
      style = props.style,
      className = props.className,
      others = _objectWithoutProperties(props, _excluded); // 暂停


  var _pause = useCallback(function () {
    _ref.current.counting = false;
    clearTimeout(_ref.current.tid);
  }, []);

  var getRemain = useCallback(function () {
    return Math.max(_ref.current.endTime - Date.now(), 0);
  }, []);
  var setRemain = useCallback(function (remain) {
    _ref.current.remain = remain;
    var timeData = parseTimeData(remain);

    if (children) {
      onChange === null || onChange === void 0 ? void 0 : onChange({
        detail: timeData
      });
    }

    setState(function (pre) {
      return _objectSpread(_objectSpread({}, pre), {}, {
        formattedTime: parseFormat(format, timeData)
      });
    });

    if (remain === 0) {
      _pause();

      onFinish === null || onFinish === void 0 ? void 0 : onFinish();
    }
  }, [children, format, onChange, onFinish, _pause]);
  var microTick = useCallback(function () {
    _ref.current.tid = simpleTick(function () {
      setRemain(getRemain());

      if (_ref.current.remain !== 0) {
        microTick();
      }
    });
  }, [getRemain, setRemain]);
  var macroTick = useCallback(function () {
    _ref.current.tid = simpleTick(function () {
      var remain = getRemain();

      if (!isSameSecond(remain, _ref.current.remain) || remain === 0) {
        setRemain(remain);
      }

      if (_ref.current.remain !== 0) {
        macroTick();
      }
    });
  }, [getRemain, setRemain]);
  var tick = useCallback(function () {
    if (millisecond) {
      microTick();
    } else {
      macroTick();
    }
  }, [macroTick, microTick, millisecond]); // 开始

  var _start = useCallback(function () {
    if (_ref.current.counting) {
      return;
    }

    _ref.current.counting = true;
    _ref.current.endTime = Date.now() + _ref.current.remain;
    tick();
  }, [tick]); // 重置


  var _reset = useCallback(function () {
    _pause();

    _ref.current.remain = time;
    setRemain(_ref.current.remain);

    if (autoStart) {
      _start();
    }
  }, [autoStart, _pause, setRemain, _start, time]);

  useImperativeHandle(ref, function () {
    return {
      start: function start() {
        _start();
      },
      pause: function pause() {
        _pause();
      },
      reset: function reset() {
        _reset();
      }
    };
  });
  useEffect(function () {
    _reset();
  }, // eslint-disable-next-line react-hooks/exhaustive-deps
  [time]);
  var tid = _ref.current.tid;
  useEffect(function () {
    return function () {
      tid && clearTimeout(tid);
    }; // eslint-disable-next-line react-hooks/exhaustive-deps
  }, []);
  return /*#__PURE__*/_jsx(View, _objectSpread(_objectSpread({
    className: "van-count-down ".concat(className),
    style: style
  }, others), {}, {
    children: children ? children : /*#__PURE__*/_jsx(_Fragment, {
      children: formattedTime
    })
  }));
}

var CountDown = /*#__PURE__*/forwardRef(Index);
export { CountDown };
export default CountDown;