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fix(v2): make more accessible skip link #4162

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merged 1 commit into from
Feb 3, 2021
Merged

fix(v2): make more accessible skip link #4162

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42 changes: 25 additions & 17 deletions packages/docusaurus-theme-classic/src/theme/SkipToContent/index.tsx
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Original file line number Diff line number Diff line change
Expand Up @@ -5,35 +5,43 @@
* LICENSE file in the root directory of this source tree.
*/

import React from 'react';
import React, {useRef, useEffect} from 'react';
import {useLocation} from '@docusaurus/router';

import styles from './styles.module.css';

function programmaticFocus(el) {
el.setAttribute('tabindex', '-1');
el.focus();
setTimeout(() => el.removeAttribute('tabindex'), 1000);
}
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didn't know this was possible, nice trick
is it safe in all cases to use? (seems to work for Chrome + Safari at least)

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I think yes, it's safe.


function SkipToContent(): JSX.Element {
const handleSkip = (e: React.KeyboardEvent<HTMLButtonElement>) => {
if (e.keyCode !== 13) {
return;
}
const containerRef = useRef(null);
const location = useLocation();

(document.activeElement as HTMLElement).blur();
const handleSkip = (e: React.MouseEvent<HTMLAnchorElement>) => {
e.preventDefault();

const firstMainElement = document.querySelector('main:first-of-type');
const targetElement =
document.querySelector('main:first-of-type') ||
document.querySelector('.main-wrapper');

if (firstMainElement) {
firstMainElement.scrollIntoView();
if (targetElement) {
programmaticFocus(targetElement);
}
};

useEffect(() => {
programmaticFocus(containerRef.current);
}, [location.pathname]);

return (
<nav aria-label="Skip navigation links">
<button
type="button"
tabIndex={0}
className={styles.skipToContent}
onKeyDown={handleSkip}>
<div ref={containerRef}>
<a href="#main" className={styles.skipToContent} onClick={handleSkip}>
Skip to main content
</button>
</nav>
</a>
</div>
);
}

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