@dnb/eufemia/components/skip-content/SkipContent.js

DNB Eufemia Design System UI Library

import React, { useCallback } from 'react';
import clsx from 'clsx';
import Button from "../button/Button.js";
import HeightAnimation from "../height-animation/HeightAnimation.js";
import { applyPageFocus } from "../../shared/helpers.js";
import withComponentMarkers from "../../shared/helpers/withComponentMarkers.js";
import { jsx as _jsx, Fragment as _Fragment, jsxs as _jsxs } from "react/jsx-runtime";
const SkipContent = localProps => {
  const {
    selector,
    text,
    children,
    className,
    focusDelay = 400,
    ...props
  } = localProps;
  React.useEffect(() => () => {
    clearTimeout(timeout.current);
  }, []);
  const [visible, setVisible] = React.useState(false);
  const [keepReturnActive, setKeepReturnActive] = React.useState(false);
  const ref = React.useRef(undefined);
  const timeout = React.useRef(undefined);
  const classes = clsx('dnb-skip-content', className, visible && 'dnb-skip-content--visible', keepReturnActive && 'dnb-skip-content__return--active');
  const returnSelector = selector.replace(/^(\.|#)/, '');
  const returnId = `${returnSelector}--alias`;
  const handleBlur = useCallback(() => {
    setVisible(false);
  }, []);
  const handleClick = useCallback(() => {
    var _element$scrollIntoVi;
    setVisible(false);
    const element = document.querySelector(selector);
    element === null || element === void 0 || (_element$scrollIntoVi = element.scrollIntoView) === null || _element$scrollIntoVi === void 0 || _element$scrollIntoVi.call(element, {
      behavior: 'smooth'
    });
    element === null || element === void 0 || element.classList.add('dnb-skip-content__focus');
    timeout.current = setTimeout(() => {
      var _document$querySelect;
      applyPageFocus(selector);
      (_document$querySelect = document.querySelector(`#${returnSelector}--alias--alias`)) === null || _document$querySelect === void 0 || _document$querySelect.classList.add('dnb-skip-content__return--active');
    }, focusDelay);
  }, [selector, focusDelay]);
  const setFocus = useCallback(() => {
    var _ref$current2;
    setVisible(true);
    window.requestAnimationFrame(() => {
      var _ref$current;
      const element = (_ref$current = ref.current) === null || _ref$current === void 0 ? void 0 : _ref$current.querySelector('.dnb-button');
      element === null || element === void 0 || element.focus();
    });
    if ((_ref$current2 = ref.current) !== null && _ref$current2 !== void 0 && _ref$current2.getAttribute('class').includes('__return--active')) {
      setKeepReturnActive(true);
    }
  }, []);
  const handleFocus = useCallback(e => {
    if (e.target.tagName === 'SPAN') {
      setFocus();
    }
  }, [setFocus]);
  const handleKeyUp = useCallback(e => {
    if (e.key === 'Tab') {
      setFocus();
    }
  }, [setFocus]);
  return _jsx("span", {
    className: classes,
    ref: ref,
    onFocus: handleFocus,
    id: returnId,
    children: _jsxs(_Fragment, {
      children: [!visible && _jsx("button", {
        className: "dnb-sr-only",
        onKeyUp: handleKeyUp,
        children: text || children
      }), _jsx(HeightAnimation, {
        open: visible,
        "aria-live": "polite",
        children: _jsx(Button, {
          wrap: true,
          variant: "secondary",
          onClick: handleClick,
          onBlur: handleBlur,
          ...props,
          children: text || children
        })
      })]
    })
  });
};
const SkipContentReturn = localProps => {
  const {
    selector,
    className,
    ...props
  } = localProps;
  const classes = clsx('dnb-skip-content__return', className);
  return _jsx(SkipContent, {
    selector: `${selector}--alias`,
    className: classes,
    ...props
  });
};
SkipContent.Return = SkipContentReturn;
withComponentMarkers(SkipContent, {
  _supportsSpacingProps: true
});
export default SkipContent;
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