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2444 slow middle box resizing (#2471)
* hook for callbackDebounce and resize observer * use hook everywhere, remove external resize observer lib * back to previous statement list debounce handling but with custom observer hook * debounced resize for statement list except annotator, remove disableUserSelect from redux and css by js instead
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -1,5 +1,19 @@ | ||
| import { useContainerDimensions } from "./useContainerDimensions"; | ||
| import useDebounce from "./useDebounce"; | ||
| import useDebouncedCallback from "./useDebouncedCallback"; | ||
| import useKeyLift from "./useKeyLift"; | ||
| import useKeyPress from "./useKeyPress"; | ||
| import { useResizeObserver } from "./useResizeObserver"; | ||
| import { useSearchParams } from "./useSearchParamsContext"; | ||
| import { useWindowSize } from "./useWindowSize"; | ||
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|
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| export { useDebounce, useKeyPress, useSearchParams }; | ||
| export { | ||
| useDebounce, | ||
| useKeyPress, | ||
| useKeyLift, | ||
| useContainerDimensions, | ||
| useSearchParams, | ||
| useDebouncedCallback, | ||
| useResizeObserver, | ||
| useWindowSize, | ||
| }; |
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,33 @@ | ||
| import { useCallback, useRef } from "react"; | ||
|
|
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| const useDebouncedCallback = <T extends (...args: any[]) => void>( | ||
| callback: T, | ||
| delay: number | ||
| ): T => { | ||
| const timeoutRef = useRef<number | undefined>(); | ||
|
|
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| const debouncedCallback = useCallback( | ||
| (...args: Parameters<T>) => { | ||
| if (timeoutRef.current) { | ||
| clearTimeout(timeoutRef.current); | ||
| } | ||
|
|
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| timeoutRef.current = window.setTimeout(() => { | ||
| callback(...args); | ||
| }, delay); | ||
| }, | ||
| [callback, delay] | ||
| ); | ||
|
|
||
| const cleanup = useCallback(() => { | ||
| if (timeoutRef.current) { | ||
| clearTimeout(timeoutRef.current); | ||
| } | ||
| }, []); | ||
|
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| useCallback(() => cleanup, [cleanup]); | ||
|
|
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| return debouncedCallback as T; | ||
| }; | ||
|
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| export default useDebouncedCallback; |
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,60 @@ | ||
| import { useDebouncedCallback } from "hooks"; | ||
| import { useLayoutEffect, useState, useRef } from "react"; | ||
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| interface UseResizeObserverOptions { | ||
| debounceDelay?: number; | ||
| } | ||
|
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| interface Size { | ||
| width: number | undefined; | ||
| height: number | undefined; | ||
| } | ||
|
|
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| export const useResizeObserver = <T extends HTMLElement>({ | ||
| debounceDelay = 0, | ||
| }: UseResizeObserverOptions = {}) => { | ||
| const ref = useRef<T | null>(null); | ||
| const animationFrameRef = useRef<number | null>(null); | ||
| const [size, setSize] = useState<Size>({ | ||
| width: undefined, | ||
| height: undefined, | ||
| }); | ||
|
|
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| const debouncedCallback = useDebouncedCallback((value: Size) => { | ||
| setSize(value); | ||
| }, debounceDelay); | ||
|
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| useLayoutEffect(() => { | ||
| const element = ref.current; | ||
| if (!element || typeof ResizeObserver === "undefined") { | ||
| return; | ||
| } | ||
|
|
||
| const resizeObserver = new ResizeObserver((entries) => { | ||
| animationFrameRef.current = window.requestAnimationFrame(() => { | ||
| if (!Array.isArray(entries) || entries.length === 0) { | ||
| return; | ||
| } | ||
|
|
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| const entry = entries[0]; | ||
| const { width, height } = entry.contentRect; | ||
|
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| debouncedCallback({ | ||
| width: Math.round(width), | ||
| height: Math.round(height), | ||
| }); | ||
| }); | ||
| }); | ||
|
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| resizeObserver.observe(element); | ||
|
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| return () => { | ||
| if (animationFrameRef.current !== null) { | ||
| window.cancelAnimationFrame(animationFrameRef.current); | ||
| } | ||
| resizeObserver.disconnect(); | ||
| }; | ||
| }, [debouncedCallback]); | ||
|
|
||
| return { ref, ...size }; | ||
| }; |
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