@aliretail/react-materials-components/es/AffixNav/AffixNav.js

B 端物料组件库

import _Affix from "@alifd/next/es/affix";
import _extends from "@babel/runtime/helpers/extends";
import _objectWithoutPropertiesLoose from "@babel/runtime/helpers/objectWithoutPropertiesLoose";
var _excluded = ["children", "className", "defaultHash", "container"];
import * as React from 'react';
import classnames from 'classnames';

var FixedNav = function FixedNav(props) {
  var children = props.children,
      className = props.className,
      defaultHash = props.defaultHash,
      container = props.container,
      restProps = _objectWithoutPropertiesLoose(props, _excluded);

  var _React$useState = React.useState(function () {
    return decodeURIComponent(window.location.hash) || defaultHash;
  }),
      hash = _React$useState[0],
      setHash = _React$useState[1];

  var divRef = React.useRef(null);
  React.useEffect(function () {
    var handleHashChange = function handleHashChange(e) {
      var target = e.target;
      setHash(decodeURIComponent(target.location.hash));
    };

    window.addEventListener('hashchange', handleHashChange);
    return function () {
      window.removeEventListener('hashchange', handleHashChange);
    };
  }, []); // fusion 的container返回值React.ReactElement有问题 as 成any避免报错

  var fusionAffixContainer = container ? function () {
    return container === null || container === void 0 ? void 0 : container(divRef.current);
  } : undefined;
  return /*#__PURE__*/React.createElement("div", {
    ref: divRef,
    className: "aliretail-fixed-nav-container"
  }, /*#__PURE__*/React.createElement(_Affix, _extends({
    className: classnames('aliretail-fixed-nav', className),
    container: fusionAffixContainer
  }, restProps), React.Children.map(children, function (child) {
    return /*#__PURE__*/React.cloneElement(child, {
      hashName: hash
    });
  })));
};

export default FixedNav;