@jannie-shao/components-antd4/es/tab-more/index.js

基于 Antd 4 的组件封装

import React, { useState, useEffect, useRef, useCallback } from 'react';
import classnames from 'classnames';
import { rootPrefix } from "../style/config";
import { checkShow } from "./util";
var prefix = rootPrefix + "-tab-more";
var TabMore = function TabMore(_ref) {
  var _ref$className = _ref.className,
    className = _ref$className === void 0 ? '' : _ref$className,
    children = _ref.children,
    _ref$lineClamp = _ref.lineClamp,
    lineClamp = _ref$lineClamp === void 0 ? 1 : _ref$lineClamp,
    _ref$iconToShow = _ref.iconToShow,
    iconToShow = _ref$iconToShow === void 0 ? '+ Show More' : _ref$iconToShow,
    _ref$iconToHide = _ref.iconToHide,
    iconToHide = _ref$iconToHide === void 0 ? '- Hide More' : _ref$iconToHide;
  var compDropContent = useRef();
  var _useState = useState(false),
    show = _useState[0],
    setShow = _useState[1];
  var _useState2 = useState(false),
    drop = _useState2[0],
    setDrop = _useState2[1];
  var resetShow = useCallback(function (entry) {
    var showNow = checkShow(entry.target, lineClamp);
    setShow(showNow);
    !showNow && setDrop(false);
  }, [lineClamp]);
  useEffect(function () {
    if (compDropContent !== null && compDropContent !== void 0 && compDropContent.current) {
      var obser = new ResizeObserver(function (entries) {
        entries.forEach(function (entry) {
          resetShow(entry);
        });
      });
      obser.observe(compDropContent === null || compDropContent === void 0 ? void 0 : compDropContent.current);
      return function cleanUp() {
        obser.disconnect();
      };
    }
    return null;
  }, [children]);
  return /*#__PURE__*/React.createElement("div", {
    className: classnames(prefix, className)
  }, /*#__PURE__*/React.createElement("div", {
    ref: compDropContent,
    className: prefix + "-content " + (drop ? '' : 'hidden'),
    style: {
      WebkitLineClamp: lineClamp
    }
  }, children), show && !drop && /*#__PURE__*/React.createElement("div", {
    className: prefix + "-btn",
    onClick: function onClick() {
      return setDrop(true);
    }
  }, iconToShow), drop && /*#__PURE__*/React.createElement("div", {
    className: prefix + "-btn",
    onClick: function onClick() {
      return setDrop(false);
    }
  }, iconToHide));
};
export default TabMore;