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

DNB Eufemia Design System UI Library

import _extends from "@babel/runtime-corejs3/helpers/esm/extends";
import React, { useCallback } from 'react';
import classnames from 'classnames';
import Button from "../button/Button.js";
import HeightAnimation from "../height-animation/HeightAnimation.js";
import { applyPageFocus } from "../../shared/helpers.js";
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();
  const timeout = React.useRef();
  const classes = classnames('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 React.createElement("span", {
    className: classes,
    ref: ref,
    onFocus: handleFocus,
    id: returnId
  }, React.createElement(React.Fragment, null, !visible && React.createElement("button", {
    className: "dnb-sr-only",
    onKeyUp: handleKeyUp
  }, text || children), React.createElement(HeightAnimation, {
    open: visible,
    "aria-live": "polite"
  }, React.createElement(Button, _extends({
    wrap: true,
    variant: "secondary",
    onClick: handleClick,
    onBlur: handleBlur
  }, props), text || children))));
};
const SkipContentReturn = localProps => {
  const {
    selector,
    className,
    ...props
  } = localProps;
  const classes = classnames('dnb-skip-content__return', className);
  return React.createElement(SkipContent, _extends({
    selector: `${selector}--alias`,
    className: classes
  }, props));
};
SkipContent.Return = SkipContentReturn;
SkipContent._supportsSpacingProps = true;
export default SkipContent;
//# sourceMappingURL=SkipContent.js.map