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feat: resizable bottom panel (#1385)
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,59 @@ | ||
| import { useEffect, useMemo, useRef, useState } from 'react'; | ||
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| import { clamp, debounce } from 'lodash'; | ||
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| import { timeUnits } from '@/constants/time'; | ||
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| export function useResizablePanel( | ||
| startSize: number, | ||
| syncHeight: (h: number) => void, | ||
| bounds: { min: number; max: number } | ||
| ) { | ||
| const [panelHeight, setPanelHeight] = useState(startSize); | ||
| const [isDragging, setIsDragging] = useState(false); | ||
| const startPosRef = useRef(0); | ||
| const startHeightRef = useRef(0); | ||
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| const debouncedSync = useMemo(() => debounce(syncHeight, timeUnits.second / 2), [syncHeight]); | ||
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| const handleMove = (clientY: number) => { | ||
| const dy = startPosRef.current - clientY; | ||
| const newHeight = clamp(startHeightRef.current + dy, bounds.min, bounds.max); | ||
| setPanelHeight(newHeight); | ||
| debouncedSync(newHeight); | ||
| }; | ||
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| const handleMouseDown = (e: React.MouseEvent<HTMLElement>) => { | ||
| setIsDragging(true); | ||
| startPosRef.current = e.clientY; | ||
| startHeightRef.current = panelHeight; | ||
| e.preventDefault(); | ||
| }; | ||
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| const handleMouseMove = (e: MouseEvent) => { | ||
| if (isDragging) { | ||
| handleMove(e.clientY); | ||
| } | ||
| }; | ||
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| const handleMouseUp = (e: MouseEvent) => { | ||
| setIsDragging(false); | ||
| handleMove(e.clientY); | ||
| }; | ||
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| // Add event listeners to window to handle mouse moves outside the component | ||
| useEffect(() => { | ||
| if (isDragging) { | ||
| window.addEventListener('mousemove', handleMouseMove); | ||
| window.addEventListener('mouseup', handleMouseUp); | ||
| return () => { | ||
| window.removeEventListener('mousemove', handleMouseMove); | ||
| window.removeEventListener('mouseup', handleMouseUp); | ||
| }; | ||
| } | ||
| return undefined; | ||
| // eslint-disable-next-line react-hooks/exhaustive-deps | ||
| }, [isDragging]); | ||
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| return { handleMouseDown, panelHeight, isDragging }; | ||
| } |
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