@dnb/eufemia
Version:
DNB Eufemia Design System UI Library
70 lines (69 loc) • 1.94 kB
JavaScript
"use client";
import { useEffect, useRef, useState } from 'react';
import classnames from 'classnames';
import { extendPropsWithContext } from "../../shared/component-helper.js";
const variantConfig = {
text: {
delay: 1000,
atomic: true,
showAnnouncement: false
},
content: {
delay: -1,
atomic: false,
showAnnouncement: true
}
};
const priorityConfig = {
low: {
politeness: 'polite'
},
high: {
politeness: 'assertive'
}
};
export default function useAriaLive(props) {
const [announcement, setAnnouncement] = useState('');
const timeoutRef = useRef(null);
const {
disabled = false,
delay,
atomic,
politeness,
relevant,
className,
children,
showAnnouncement,
variant,
priority,
...rest
} = extendPropsWithContext(props, variantConfig[props.variant || 'text'], priorityConfig[props.priority || 'low']);
const showTextAnnouncement = delay > -1;
useEffect(() => {
if (showTextAnnouncement) {
var _ref;
setAnnouncement('');
const isTest = process.env.NODE_ENV === 'test';
const timer = setTimeout(() => {
if (!disabled) {
setAnnouncement(children);
}
clearTimeout(timeoutRef.current);
timeoutRef.current = setTimeout(() => setAnnouncement(''), isTest ? 100 : delay + 1000);
}, (_ref = isTest ? 0 : delay) !== null && _ref !== void 0 ? _ref : 1000);
return () => {
clearTimeout(timer);
clearTimeout(timeoutRef.current);
};
}
}, [delay, children, disabled, showTextAnnouncement]);
return {
'aria-live': disabled && !showTextAnnouncement ? 'off' : politeness,
'aria-atomic': atomic,
'aria-relevant': relevant,
className: classnames('dnb-aria-live', className, !showAnnouncement && 'dnb-sr-only'),
children: showTextAnnouncement ? announcement : children,
...rest
};
}
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