41 lines
1.1 KiB
JavaScript
41 lines
1.1 KiB
JavaScript
import { useEffect, useState } from 'react';
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/**
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* Takes a ref to the scrolling element in ParticipantBar.
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* Observes DOM changes and returns true, if a TileActions menu is opened.
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* @returns boolean
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*/
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export const useBlockScrolling = (scrollRef) => {
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const [blockScrolling, setBlockScrolling] = useState(false);
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useEffect(() => {
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const scrollEl = scrollRef.current;
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if (!scrollEl || typeof MutationObserver === 'undefined') return false;
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const observer = new MutationObserver((mutations) => {
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if (!scrollEl) return;
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mutations.forEach((m) => {
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const { target } = m;
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if (
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m.attributeName === 'class' &&
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target.classList.contains('tile-actions') &&
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scrollEl.scrollHeight > scrollEl.clientHeight
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) {
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setBlockScrolling(target.classList.contains('showMenu'));
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}
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});
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});
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observer.observe(scrollEl, {
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attributes: true,
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subtree: true,
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});
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return () => observer.disconnect();
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}, [scrollRef]);
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return blockScrolling;
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};
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export default useBlockScrolling;
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