@dnb/eufemia/es/components/aria-live/useAriaLive.js

DNB Eufemia Design System UI Library

"use client";

import _defineProperty from "@babel/runtime/helpers/esm/defineProperty";
import _objectWithoutProperties from "@babel/runtime/helpers/esm/objectWithoutProperties";
const _excluded = ["disabled", "delay", "atomic", "politeness", "relevant", "className", "children", "showAnnouncement", "variant", "priority"];
function ownKeys(e, r) { var t = Object.keys(e); if (Object.getOwnPropertySymbols) { var o = Object.getOwnPropertySymbols(e); r && (o = o.filter(function (r) { return Object.getOwnPropertyDescriptor(e, r).enumerable; })), t.push.apply(t, o); } return t; }
function _objectSpread(e) { for (var r = 1; r < arguments.length; r++) { var t = null != arguments[r] ? arguments[r] : {}; r % 2 ? ownKeys(Object(t), !0).forEach(function (r) { _defineProperty(e, r, t[r]); }) : Object.getOwnPropertyDescriptors ? Object.defineProperties(e, Object.getOwnPropertyDescriptors(t)) : ownKeys(Object(t)).forEach(function (r) { Object.defineProperty(e, r, Object.getOwnPropertyDescriptor(t, r)); }); } return e; }
import { useEffect, useRef, useState } from 'react';
import classnames from 'classnames';
import { extendPropsWithContext } from '../../shared/component-helper';
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 _extendPropsWithConte = extendPropsWithContext(props, variantConfig[props.variant || 'text'], priorityConfig[props.priority || 'low']),
    {
      disabled = false,
      delay,
      atomic,
      politeness,
      relevant,
      className,
      children,
      showAnnouncement,
      variant,
      priority
    } = _extendPropsWithConte,
    rest = _objectWithoutProperties(_extendPropsWithConte, _excluded);
  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 _objectSpread({
    '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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