a6f5c3e842
* add mutation observer hok * add hook to read speaking member by observing iframe content * display speaking member name in call status bar and improve layout * fix shrining
37 lines
1 KiB
TypeScript
37 lines
1 KiB
TypeScript
import { useEffect, useMemo } from 'react';
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export type OnMutationCallback = (mutations: MutationRecord[]) => void;
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export const getMutationRecord = (
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target: Node,
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mutations: MutationRecord[]
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): MutationRecord | undefined => mutations.find((mutation) => mutation.target === target);
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export const useMutationObserver = (
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onMutationCallback: OnMutationCallback,
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observeElement?: Node | null | (() => Node | null),
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options?: MutationObserverInit
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): MutationObserver => {
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const mutationObserver = useMemo(
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() => new MutationObserver(onMutationCallback),
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[onMutationCallback]
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);
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useEffect(() => () => mutationObserver?.disconnect(), [mutationObserver]);
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useEffect(() => {
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const element = typeof observeElement === 'function' ? observeElement() : observeElement;
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if (element) {
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mutationObserver.observe(element, options);
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}
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return () => {
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if (element) {
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mutationObserver.disconnect();
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}
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};
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}, [mutationObserver, observeElement, options]);
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return mutationObserver;
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};
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