@antmjs/vantui/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 { get } from '../default-props';
import { isSameSecond, parseFormat, parseTimeData } from './util';
import { Fragment as _Fragment } from "react/jsx-runtime";
import { jsx as _jsx } from "react/jsx-runtime";
var d = get().CountDown;
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 _d$props = _objectSpread(_objectSpread({}, d), props),
    time = _d$props.time,
    _d$props$format = _d$props.format,
    format = _d$props$format === void 0 ? 'HH:mm:ss' : _d$props$format,
    _d$props$autoStart = _d$props.autoStart,
    autoStart = _d$props$autoStart === void 0 ? true : _d$props$autoStart,
    millisecond = _d$props.millisecond,
    onChange = _d$props.onChange,
    onFinish = _d$props.onFinish,
    children = _d$props.children,
    style = _d$props.style,
    className = _d$props.className,
    others = _objectWithoutProperties(_d$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]);
  useEffect(function () {
    var _refCurrent = _ref.current;
    return function () {
      _refCurrent.tid && clearTimeout(_refCurrent.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;