acud/es/carousel/indicator.js

acg react 组件库

import React, { useMemo, useRef } from 'react';
import classNames from 'classnames';
;
var CarouselIndicator = function CarouselIndicator(_ref) {
  var prefixCls = _ref.prefixCls,
    _ref$dotPosition = _ref.dotPosition,
    dotPosition = _ref$dotPosition === void 0 ? 'bottom' : _ref$dotPosition,
    _ref$autoplay = _ref.autoplay,
    autoplay = _ref$autoplay === void 0 ? true : _ref$autoplay,
    length = _ref.length,
    setKey = _ref.setKey,
    currentKey = _ref.currentKey,
    playInterval = _ref.playInterval,
    _ref$dotType = _ref.dotType,
    dotType = _ref$dotType === void 0 ? 'dot' : _ref$dotType,
    multi = _ref.multi,
    _ref$showNumber = _ref.showNumber,
    showNumber = _ref$showNumber === void 0 ? 1 : _ref$showNumber,
    style = _ref.style;
  var timer = useRef();
  var extraCount = useMemo(function () {
    return multi ? showNumber : 1;
  }, [multi, showNumber]);
  var key = useMemo(function () {
    if (currentKey >= length + extraCount) {
      return currentKey - length - extraCount;
    }
    if (currentKey < extraCount) {
      return length - extraCount + currentKey;
    }
    return currentKey - extraCount;
  }, [currentKey, extraCount, length]);
  var handleClick = function handleClick(idx) {
    if (currentKey === 0) {
      setKey({
        lastKey: 0,
        currentKey: length
      });
      clearTimeout(timer.current);
      timer.current = setTimeout(function () {
        setKey({
          lastKey: length + 1,
          currentKey: idx + extraCount
        });
      });
      return;
    }
    if (currentKey === length + extraCount) {
      setKey({
        lastKey: currentKey,
        currentKey: extraCount
      });
      clearTimeout(timer.current);
      timer.current = setTimeout(function () {
        setKey({
          lastKey: extraCount,
          currentKey: idx + extraCount
        });
      });
      return;
    }
    setKey({
      lastKey: currentKey,
      currentKey: idx + extraCount
    });
  };
  return /*#__PURE__*/React.createElement("div", {
    style: style,
    className: classNames("".concat(prefixCls, "-indicator"), "".concat(prefixCls, "-indicator-").concat(dotType), "".concat(prefixCls, "-indicator-").concat(dotPosition))
  }, dotType === 'dot' ? /*#__PURE__*/React.createElement("ul", null, Array.from({
    length: length
  }, function (_v, k) {
    return /*#__PURE__*/React.createElement("li", {
      onClick: function onClick() {
        return handleClick(k);
      },
      key: k,
      className: k === key ? 'active' : ''
    }, /*#__PURE__*/React.createElement("div", {
      className: "fill",
      style: {
        transitionDuration: "".concat(k === key && autoplay ? playInterval : 0, "ms")
      }
    }));
  })) : /*#__PURE__*/React.createElement("div", null, key + 1, "/", /*#__PURE__*/React.createElement("span", {
    className: "total"
  }, length)));
};
export default CarouselIndicator;