Macbook
36 lines
1.0 KiB
TypeScript
36 lines
1.0 KiB
TypeScript
import { useEffect, useRef, useState } from 'react';
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/** 실시간 차트 ws-dot receiving 과 동일 — 데이터 수신 시 짧은 형광 플래시 */
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export function useLiveReceiveFlash(
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signal: number | string | null | undefined,
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enabled: boolean,
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durationMs = 600,
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): boolean {
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const [flashing, setFlashing] = useState(false);
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const prevRef = useRef<number | string | null>(null);
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const timerRef = useRef<ReturnType<typeof setTimeout> | null>(null);
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useEffect(() => {
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if (!enabled || signal == null) {
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prevRef.current = null;
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return;
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}
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const prev = prevRef.current;
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prevRef.current = signal;
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if (prev == null || prev === signal) return;
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setFlashing(true);
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if (timerRef.current) clearTimeout(timerRef.current);
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timerRef.current = setTimeout(() => {
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setFlashing(false);
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timerRef.current = null;
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}, durationMs);
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}, [signal, enabled, durationMs]);
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useEffect(() => () => {
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if (timerRef.current) clearTimeout(timerRef.current);
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}, []);
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return flashing;
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}
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