Add resizable inline right panels #2512
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,156 @@ | ||
| import { Schema } from "effect"; | ||
| import { | ||
| type PointerEvent as ReactPointerEvent, | ||
| type ReactNode, | ||
| useCallback, | ||
| useEffect, | ||
| useRef, | ||
| useState, | ||
| } from "react"; | ||
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| import { getLocalStorageItem, setLocalStorageItem } from "~/hooks/useLocalStorage"; | ||
| import { cn } from "~/lib/utils"; | ||
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| const DEFAULT_RATIO = 0.4; | ||
| const MIN_RATIO = 0.3; | ||
| const MAX_RATIO = 0.8; | ||
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| const clampRatio = (ratio: number) => Math.max(MIN_RATIO, Math.min(ratio, MAX_RATIO)); | ||
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| function readStoredRatio(storageKey: string | undefined) { | ||
| if (!storageKey) return DEFAULT_RATIO; | ||
| const storedRatio = getLocalStorageItem(storageKey, Schema.Finite); | ||
| return storedRatio === null ? DEFAULT_RATIO : clampRatio(storedRatio); | ||
| } | ||
|
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| export function ResizableRightPanel({ | ||
| children, | ||
| className, | ||
| storageKey, | ||
| }: { | ||
| children: ReactNode; | ||
| className?: string; | ||
| storageKey?: string; | ||
| }) { | ||
| const [widthRatio, setWidthRatio] = useState(() => readStoredRatio(storageKey)); | ||
| const panelRef = useRef<HTMLDivElement | null>(null); | ||
| const widthRatioRef = useRef(widthRatio); | ||
| const resizeStateRef = useRef<{ | ||
| frameId: number | null; | ||
| handle: HTMLDivElement; | ||
| panel: HTMLDivElement; | ||
| pointerId: number; | ||
| startWidth: number; | ||
| startX: number; | ||
| } | null>(null); | ||
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| const commitWidthRatio = useCallback((ratio: number) => { | ||
| widthRatioRef.current = ratio; | ||
| setWidthRatio(ratio); | ||
| }, []); | ||
|
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| const stopResize = useCallback( | ||
| (pointerId: number) => { | ||
| const resizeState = resizeStateRef.current; | ||
| if (!resizeState) return; | ||
| if (resizeState.frameId !== null) { | ||
| window.cancelAnimationFrame(resizeState.frameId); | ||
| } | ||
| if (resizeState.handle.hasPointerCapture(pointerId)) { | ||
| resizeState.handle.releasePointerCapture(pointerId); | ||
| } | ||
| document.body.style.removeProperty("cursor"); | ||
| document.body.style.removeProperty("user-select"); | ||
| resizeStateRef.current = null; | ||
| if (storageKey) { | ||
| setLocalStorageItem(storageKey, widthRatioRef.current, Schema.Finite); | ||
| } | ||
| }, | ||
| [storageKey], | ||
| ); | ||
|
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| const handlePointerDown = useCallback((event: ReactPointerEvent<HTMLDivElement>) => { | ||
| if (event.button !== 0) return; | ||
| const panel = panelRef.current; | ||
| if (!panel) return; | ||
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| event.preventDefault(); | ||
| event.stopPropagation(); | ||
| resizeStateRef.current = { | ||
| frameId: null, | ||
| handle: event.currentTarget, | ||
| panel, | ||
| pointerId: event.pointerId, | ||
| startWidth: panel.getBoundingClientRect().width, | ||
| startX: event.clientX, | ||
| }; | ||
| event.currentTarget.setPointerCapture(event.pointerId); | ||
| document.body.style.cursor = "col-resize"; | ||
| document.body.style.userSelect = "none"; | ||
| }, []); | ||
|
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| const handlePointerMove = useCallback( | ||
| (event: ReactPointerEvent<HTMLDivElement>) => { | ||
| const resizeState = resizeStateRef.current; | ||
| if (!resizeState || resizeState.pointerId !== event.pointerId) return; | ||
|
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| event.preventDefault(); | ||
| if (resizeState.frameId !== null) return; | ||
|
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| const clientX = event.clientX; | ||
| resizeState.frameId = window.requestAnimationFrame(() => { | ||
| const activeResizeState = resizeStateRef.current; | ||
| if (!activeResizeState) return; | ||
|
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| activeResizeState.frameId = null; | ||
| const containerWidth = activeResizeState.panel.parentElement?.clientWidth ?? 0; | ||
| if (containerWidth <= 0) return; | ||
|
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| const nextWidth = activeResizeState.startWidth + activeResizeState.startX - clientX; | ||
| commitWidthRatio(clampRatio(nextWidth / containerWidth)); | ||
| }); | ||
| }, | ||
| [commitWidthRatio], | ||
| ); | ||
|
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| const handlePointerUp = useCallback( | ||
| (event: ReactPointerEvent<HTMLDivElement>) => { | ||
| const resizeState = resizeStateRef.current; | ||
| if (!resizeState || resizeState.pointerId !== event.pointerId) return; | ||
| stopResize(event.pointerId); | ||
| }, | ||
| [stopResize], | ||
| ); | ||
|
macroscopeapp[bot] marked this conversation as resolved.
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| useEffect(() => { | ||
| return () => { | ||
| const resizeState = resizeStateRef.current; | ||
| if (resizeState?.frameId !== null && resizeState?.frameId !== undefined) { | ||
| window.cancelAnimationFrame(resizeState.frameId); | ||
| } | ||
| document.body.style.removeProperty("cursor"); | ||
| document.body.style.removeProperty("user-select"); | ||
| }; | ||
| }, []); | ||
|
cursor[bot] marked this conversation as resolved.
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| return ( | ||
| <div | ||
| className={cn("relative min-h-0 shrink-0", className)} | ||
| ref={panelRef} | ||
| style={{ width: `${widthRatio * 100}%` }} | ||
| > | ||
| <div | ||
| aria-label="Resize right panel" | ||
| className="absolute inset-y-0 left-0 z-20 w-4 -translate-x-1/2 cursor-col-resize touch-none after:absolute after:inset-y-0 after:left-1/2 after:w-px hover:after:bg-border" | ||
| onPointerCancel={handlePointerUp} | ||
| onPointerDown={handlePointerDown} | ||
| onPointerMove={handlePointerMove} | ||
| onPointerUp={handlePointerUp} | ||
| role="separator" | ||
| tabIndex={-1} | ||
| title="Drag to resize right panel" | ||
| /> | ||
| {children} | ||
| </div> | ||
| ); | ||
| } | ||
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