{"slug":"preview-rail","name":"Preview Rail","description":"Codex app-inspired navigation rail with compact ticks that form a hover pyramid and reveal a floating destination preview.","category":"motion","source_url":"https://beui.dev/r/preview-rail/raw","detail_url":"https://beui.dev/r/preview-rail","raw_url":"https://beui.dev/r/preview-rail/raw","page_url":"https://beui.dev/components/motion/preview-rail","markdown_url":"https://beui.dev/components/motion/preview-rail.md","published_at":"2026-07-11","updated_at":"2026-09-14","dependencies":["clsx","motion","react","tailwind-merge"],"internal":["@/components/motion/preview-rail","@/lib/ease","@/lib/hooks/use-dismiss","@/lib/hooks/use-hover-gesture","@/lib/hooks/use-tap-gesture","@/lib/touch","@/lib/utils"],"files":[{"path":"components/motion/preview-rail.tsx","type":"component","content":"\"use client\";\n// beui.dev/components/motion/preview-rail\n\nimport { AnimatePresence, motion, useReducedMotion } from \"motion/react\";\nimport {\n type MouseEvent,\n type PointerEvent,\n type ReactNode,\n useCallback,\n useId,\n useRef,\n useState,\n} from \"react\";\nimport { EASE_OUT, SPRING_LAYOUT } from \"@/lib/ease\";\nimport { useDismiss } from \"@/lib/hooks/use-dismiss\";\nimport { useHoverGesture } from \"@/lib/hooks/use-hover-gesture\";\nimport { useTapGesture } from \"@/lib/hooks/use-tap-gesture\";\nimport { cn } from \"@/lib/utils\";\n\nexport interface PreviewRailItem {\n id: string;\n label: string;\n ariaLabel?: string;\n description?: ReactNode;\n href?: string;\n target?: \"_blank\" | \"_self\" | \"_parent\" | \"_top\";\n rel?: string;\n}\n\nexport interface PreviewRailProps {\n items: PreviewRailItem[];\n label?: string;\n orientation?: \"vertical\" | \"horizontal\";\n activeId?: string;\n defaultActiveId?: string;\n onActiveChange?: (id: string) => void;\n onItemSelect?: (item: PreviewRailItem) => void;\n renderPreview?: (item: PreviewRailItem) => ReactNode;\n showPreview?: boolean;\n previewSide?: \"before\" | \"after\";\n highlightActive?: boolean;\n itemSize?: number;\n children?: ReactNode;\n className?: string;\n railClassName?: string;\n previewContainerClassName?: string;\n previewClassName?: string;\n}\n\nfunction DefaultPreview({ item }: { item: PreviewRailItem }) {\n return (\n \n \n {item.label}\n

\n {item.description ? (\n \n {item.description}\n \n ) : null}\n \n );\n}\n\nexport function PreviewRail({\n items,\n label = \"Section navigation\",\n orientation = \"vertical\",\n activeId,\n defaultActiveId,\n onActiveChange,\n onItemSelect,\n renderPreview,\n showPreview = true,\n previewSide = \"after\",\n highlightActive = false,\n itemSize = 24,\n children,\n className,\n railClassName,\n previewContainerClassName,\n previewClassName,\n}: PreviewRailProps) {\n const uid = useId();\n const reduce = useReducedMotion();\n const rootRef = useRef(null);\n const [internalActiveId, setInternalActiveId] = useState(\n defaultActiveId ?? items[0]?.id ?? \"\",\n );\n const [hoveredId, setHoveredId] = useState(null);\n // A finger cannot hover, so a tap lights the tick instead. Kept apart from\n // the hovered one: they end in different ways, and a stray mouse move must\n // not clear a tick the keyboard or a tap chose.\n const [pinnedId, setPinnedId] = useState(null);\n const [focusedId, setFocusedId] = useState(null);\n // A click carries no pointerType, so the pointerdown before it is what says\n // whether the activation was a tap. Keyboard activation has none at all.\n const tap = useTapGesture();\n const hover = useHoverGesture();\n\n const clearPinned = useCallback(() => setPinnedId(null), []);\n\n // The next tap outside the rail stands in for the pointer leaving it. The\n // card is a preview, so that tap passes through to whatever it landed on.\n useDismiss(pinnedId !== null, clearPinned, rootRef);\n\n const requestedActiveId = activeId ?? internalActiveId;\n const selectedId = items.some((item) => item.id === requestedActiveId)\n ? requestedActiveId\n : (items[0]?.id ?? \"\");\n const displayedId = hoveredId ?? pinnedId ?? focusedId ?? \"\";\n const highlightedId = displayedId || (highlightActive ? selectedId : \"\");\n const displayedIndex = items.findIndex((item) => item.id === highlightedId);\n const rowTemplate = items.length\n ? `repeat(${items.length}, ${itemSize}px)`\n : undefined;\n const isHorizontal = orientation === \"horizontal\";\n\n const selectItem = (id: string) => {\n if (activeId === undefined) setInternalActiveId(id);\n onActiveChange?.(id);\n };\n\n return (\n {\n // Both tick sources leave with the focus: a tap does not always land\n // focus, but when it does, tabbing away must not strand the card.\n if (!event.currentTarget.contains(event.relatedTarget)) {\n setFocusedId(null);\n setPinnedId(null);\n }\n }}\n className={cn(\n \"isolate relative flex w-full overflow-visible\",\n isHorizontal\n ? \"min-h-64 flex-col items-center justify-center\"\n : \"min-h-80\",\n className,\n )}\n >\n {\n // A touch pointer leaves on lift, which would clear the tick the tap\n // just chose — that one is cleared by the outside tap instead.\n if (hover.leave(event)) setHoveredId(null);\n }}\n style={\n isHorizontal\n ? { gridTemplateColumns: rowTemplate }\n : { gridTemplateRows: rowTemplate }\n }\n className={cn(\n \"relative z-10 grid shrink-0\",\n isHorizontal\n ? \"h-12 w-fit max-w-full self-center justify-center\"\n : \"w-12 content-center\",\n railClassName,\n )}\n >\n {items.map((item, index) => {\n const selected = item.id === selectedId;\n const highlighted = item.id === highlightedId;\n const distance =\n displayedIndex < 0 ? Number.POSITIVE_INFINITY : Math.abs(index - displayedIndex);\n const scale = highlighted\n ? 1\n : distance === 1\n ? 0.68\n : distance === 2\n ? 0.44\n : 0.25;\n\n const itemContent = (\n <>\n \n \n );\n\n const sharedClassName = cn(\n \"relative flex text-muted-foreground focus-visible:outline-none focus-visible:ring-2 focus-visible:ring-ring focus-visible:ring-offset-2 focus-visible:ring-offset-background\",\n isHorizontal\n ? \"h-12 w-6 items-end justify-center\"\n : \"h-6 w-12 items-center\",\n );\n const sharedStyle = isHorizontal\n ? { width: itemSize }\n : { height: itemSize };\n const handlePointerEnter = (event: PointerEvent) => {\n if (hover.enter(event)) setHoveredId(item.id);\n };\n const handlePointerDown = (event: PointerEvent) => {\n tap.start(event, pinnedId === item.id);\n setFocusedId(null);\n };\n // A gesture the platform takes away sends no click, and a key press\n // starts an activation that never had a pointer behind it: either\n // one leaves a record the next click would read as a tap of its own.\n const dropGesture = () => tap.drop();\n const handleFocus = (currentTarget: HTMLElement) => {\n if (currentTarget.matches(\":focus-visible\")) {\n setFocusedId(item.id);\n }\n };\n const handleSelect = (event: MouseEvent) => {\n const gesture = tap.take();\n const tapped =\n gesture !== null && gesture.pointerType !== \"mouse\";\n\n if (tapped) {\n // A link would otherwise show its preview and leave the page in\n // the same tap, so the card is never read: the first tap lights\n // the tick, the second follows the link.\n if (item.href && !gesture.state) {\n event.preventDefault();\n setPinnedId(item.id);\n return;\n }\n setPinnedId(item.id);\n }\n\n selectItem(item.id);\n onItemSelect?.(item);\n };\n\n return item.href ? (\n handleFocus(event.currentTarget)}\n onClick={handleSelect}\n style={sharedStyle}\n className={sharedClassName}\n >\n {itemContent}\n \n ) : (\n handleFocus(event.currentTarget)}\n onClick={handleSelect}\n style={sharedStyle}\n className={sharedClassName}\n >\n {itemContent}\n \n );\n })}\n \n\n {showPreview ? (\n \n {items.map((item) => (\n \n {item.id === displayedId ? (\n \n \n \n \n {renderPreview ? (\n renderPreview(item)\n ) : (\n \n )}\n \n \n \n \n ) : null}\n \n ))}\n \n ) : null}\n\n {children ? (\n
{children}
\n ) : null}\n \n );\n}\n"},{"path":"lib/ease.ts","type":"util","content":"// Shared motion tokens. Easing curves mirror the CSS custom properties in\n// globals.css; springs are the canonical physics used across components.\n// Strong custom variants — defaults like `ease-in`/`ease-out` feel weak.\n\nexport const EASE_OUT = [0.16, 1, 0.3, 1] as const;\nexport const EASE_IN_OUT = [0.77, 0, 0.175, 1] as const;\nexport const EASE_DRAWER = [0.32, 0.72, 0, 1] as const;\n\n/** CSS string form of EASE_OUT for inline style transitions. */\nexport const EASE_OUT_CSS = \"cubic-bezier(0.16, 1, 0.3, 1)\";\n\n/** Press feedback on buttons and other tappable surfaces. */\nexport const SPRING_PRESS = {\n type: \"spring\",\n stiffness: 500,\n damping: 30,\n mass: 0.6,\n} as const;\n\n/** Content swaps — label/icon slots trading places inside a control. */\nexport const SPRING_SWAP = {\n type: \"spring\",\n stiffness: 460,\n damping: 30,\n mass: 0.55,\n} as const;\n\n/** Overlay panel entrances — modals and sheets summoned by pointer. */\nexport const SPRING_PANEL = {\n type: \"spring\",\n stiffness: 420,\n damping: 40,\n mass: 0.5,\n} as const;\n\n/** Shared-layout glides — pills, indicators and panels morphing between positions. */\nexport const SPRING_LAYOUT = {\n type: \"spring\",\n stiffness: 360,\n damping: 32,\n mass: 0.6,\n} as const;\n\n/** Cursor-follow physics for decorative mouse tracking (magnetic, tilt, dock). */\nexport const SPRING_MOUSE = {\n stiffness: 200,\n damping: 15,\n mass: 0.3,\n} as const;\n\n/** Dragged handles and fills (sliders) — critically damped `useSpring` config,\n * so the value follows the pointer butterily and never rebounds off an end. */\nexport const SPRING_GLIDE = {\n stiffness: 700,\n damping: 50,\n mass: 0.5,\n} as const;\n"},{"path":"lib/hooks/use-dismiss.ts","type":"util","content":"\"use client\";\n\nimport { type RefObject, useEffect } from \"react\";\n\n/**\n * What the dismissing gesture does to the control it landed on.\n *\n * `\"pass-through\"` is the platform norm (native popover light-dismiss): the\n * tap closes the overlay *and* activates whatever was under it. Use\n * `\"consume\"` where the open overlay sits over or beside controls that would\n * be costly to trigger by accident — the dismissal then swallows the\n * activation too, so the gesture only closes.\n */\nexport type DismissBehavior = \"pass-through\" | \"consume\";\n\nexport interface DismissOptions {\n /** Default `\"pass-through\"`. */\n behavior?: DismissBehavior;\n /** Dismiss on Escape as well. Default true. */\n escape?: boolean;\n /** Return true for an outside target that should *not* dismiss. Must be stable. */\n ignore?: (target: Element) => boolean;\n}\n\n/**\n * What every currently open dismiss scope counts as inside itself. A consumed\n * dismissal reads this to tell a stray gesture from one that belongs to an\n * overlay in front of it: overlays have no shared z-order to consult, but the\n * one the gesture landed in has said as much by registering it.\n */\nconst openScopes = new Set<(target: Element) => boolean>();\n\nfunction claimedByAnotherScope(\n self: (target: Element) => boolean,\n target: Element,\n) {\n for (const scope of openScopes) {\n if (scope !== self && scope(target)) return true;\n }\n return false;\n}\n\n// preventDefault on pointerdown does not suppress the click that follows, so\n// consuming a gesture means swallowing that click itself. The swallower\n// deliberately outlives the effect that installed it — the dismissal it\n// belongs to has already unmounted or re-rendered by the time the click lands.\n// It releases on that click, or on the next gesture if the pointer is dragged\n// away and no click ever arrives, so it can never eat a later one. A keydown\n// releases it too: a gesture that ends with neither a click nor a cancel would\n// otherwise leave it armed, and the click Enter synthesizes on some focused\n// control is not the one this dismissal was owed.\nfunction consumeActivation(source: Event) {\n const swallow = (event: MouseEvent) => {\n event.preventDefault();\n event.stopPropagation();\n release();\n };\n const restart = (event: Event) => {\n if (event !== source) release();\n };\n const release = () => {\n window.removeEventListener(\"click\", swallow, true);\n window.removeEventListener(\"pointerdown\", restart, true);\n window.removeEventListener(\"pointercancel\", restart, true);\n window.removeEventListener(\"keydown\", release, true);\n };\n window.addEventListener(\"click\", swallow, true);\n window.addEventListener(\"pointerdown\", restart, true);\n window.addEventListener(\"pointercancel\", restart, true);\n window.addEventListener(\"keydown\", release, true);\n}\n\n/**\n * Close an open overlay on Escape or a pointerdown outside `ref`. Pass `null`\n * for `ref` when what counts as inside isn't one element, and say so with\n * `ignore` instead.\n *\n * The pointerdown listener is capture-phase: a bubble-phase one is blinded by\n * any handler in between that stops propagation, and an overlay cannot know\n * what it is layered over. `onDismiss` and `ignore` must be stable (wrap in\n * useCallback) so the listeners aren't re-bound every render while open.\n */\nexport function useDismiss(\n open: boolean,\n onDismiss: () => void,\n ref: RefObject | null,\n {\n behavior = \"pass-through\",\n escape: dismissOnEscape = true,\n ignore,\n }: DismissOptions = {},\n) {\n useEffect(() => {\n if (!open) return;\n const inside = (target: Element) =>\n Boolean(ref?.current?.contains(target)) || Boolean(ignore?.(target));\n const onKey = (event: KeyboardEvent) => {\n if (dismissOnEscape && event.key === \"Escape\") onDismiss();\n };\n const onPointer = (event: PointerEvent) => {\n const target = event.target as Element | null;\n if (!target || inside(target)) return;\n // Outside this overlay, but inside one that is also open: the gesture is\n // that overlay's to answer, and swallowing its click from behind would\n // cost the user the control they actually aimed at.\n if (behavior === \"consume\" && !claimedByAnotherScope(inside, target)) {\n consumeActivation(event);\n }\n onDismiss();\n };\n openScopes.add(inside);\n window.addEventListener(\"keydown\", onKey);\n window.addEventListener(\"pointerdown\", onPointer, true);\n return () => {\n openScopes.delete(inside);\n window.removeEventListener(\"keydown\", onKey);\n window.removeEventListener(\"pointerdown\", onPointer, true);\n };\n }, [open, onDismiss, ref, behavior, dismissOnEscape, ignore]);\n}\n"},{"path":"lib/hooks/use-hover-gesture.ts","type":"util","content":"\"use client\";\n\nimport { useMemo, useRef } from \"react\";\nimport { isHoveringPointer } from \"@/lib/touch\";\n\ninterface BoundaryEvent {\n pointerId: number;\n pointerType: string;\n buttons: number;\n}\n\nexport interface HoverGesture {\n /** True when this enter starts a hover: the pointer arrived resting, not pressing. */\n enter: (event: BoundaryEvent) => boolean;\n /** True when this leave ends a hover that entered as one. */\n leave: (event: BoundaryEvent) => boolean;\n}\n\n/**\n * Pairs a surface's enter with its leave, per pointer.\n *\n * `isHoveringPointer` answers the question the *enter* asks — is this pointer\n * resting on the surface or pressing it — and both boundary cases go wrong if\n * the leave is asked the same question again:\n *\n * - A pen with no hover never rests. It arrives in contact, taps, and the spec\n * then requires its boundary events after `pointerup`, so the leave carries\n * `buttons: 0` and reads as a mouse gliding off. Hover teardown then undid\n * the tap — the panel the pen had just opened closed under it.\n * - A mouse pressed on the surface and dragged off leaves with `buttons: 1`.\n * Skipping teardown there strands the surface open: the release happens\n * outside, and no second leave ever comes.\n *\n * So the state a hover holds is released by the pointer that took it, whatever\n * the buttons say at the boundary, and a pointer that arrived in contact never\n * took it in the first place. Contact is the exception tracked here, not\n * hover: a leave from a pointer this surface never saw enter — mounted under\n * the cursor, say — still counts, since the alternative is state with no way\n * out.\n */\nexport function useHoverGesture(): HoverGesture {\n const contact = useRef(new Set());\n\n return useMemo(\n () => ({\n enter: (event) => {\n if (isHoveringPointer(event)) {\n contact.current.delete(event.pointerId);\n return true;\n }\n contact.current.add(event.pointerId);\n return false;\n },\n leave: (event) => {\n const arrivedInContact = contact.current.delete(event.pointerId);\n return !arrivedInContact && event.pointerType !== \"touch\";\n },\n }),\n [],\n );\n}\n"},{"path":"lib/hooks/use-tap-gesture.ts","type":"util","content":"\"use client\";\n\nimport { useMemo, useRef } from \"react\";\n\n/** What a pointerdown recorded, read back by the click that ends its gesture. */\nexport interface TapRecord {\n /** Which input started the gesture. */\n pointerType: string;\n /** What the surface was showing when it started. */\n state: S;\n}\n\nexport interface TapGesture {\n /** Record the gesture a pointerdown starts, with the state it starts in. */\n start: (event: { pointerType: string }, state: S) => void;\n /** Read the record and clear it. `null` when no pointer is behind this click. */\n take: () => TapRecord | null;\n /** Drop the record: this gesture will never spend it on a click. */\n drop: () => void;\n}\n\n/**\n * The pointer gesture behind a click, recorded where the click cannot report\n * it. A `click` carries no `pointerType` in the engines that matter, so the\n * `pointerdown` before it is the only thing that says which input activated\n * the control — and whether one did at all, since keyboard activation\n * synthesizes a click with no pointer behind it.\n *\n * State goes in with the record because a click reports that no better: a\n * browser that focuses a control on contact can open the very panel the tap\n * was meant to open, and reading \"is it open\" at click time then undoes it.\n * What the gesture started against is what it acts on.\n *\n * The record is spent by one click and dropped by everything else, because a\n * record that outlives its gesture is worse than none:\n *\n * - A scroll or an OS gesture takes the touch away — `pointercancel`, no click\n * ever — and the finger would sit in the record until some later click.\n * - That later click is often `Enter` on a keyboard, which arrives with no\n * pointerdown of its own and would inherit the abandoned finger. A keydown\n * is the start of a keyboard activation and never part of a tap, so it drops\n * the record too.\n *\n * Both ends have to be wired by the surface: `drop` on `onPointerCancel` and\n * on `onKeyDown`.\n */\nexport function useTapGesture(): TapGesture {\n const record = useRef | null>(null);\n\n return useMemo(\n () => ({\n start: (event, state) => {\n record.current = { pointerType: event.pointerType, state };\n },\n take: () => {\n const spent = record.current;\n record.current = null;\n return spent;\n },\n drop: () => {\n record.current = null;\n },\n }),\n [],\n );\n}\n"},{"path":"lib/utils.ts","type":"util","content":"import { clsx, type ClassValue } from \"clsx\"\nimport { twMerge } from \"tailwind-merge\"\n\nexport function cn(...inputs: ClassValue[]) {\n return twMerge(clsx(inputs))\n}\n"},{"path":"lib/touch.ts","type":"util","content":"// Shared touch primitives. iOS and iPadOS run their own gestures on top of the\n// page — the long-press selection callout and the selection it drags in with\n// it — and they win: once the platform claims a touch it cancels ours\n// mid-gesture, so a press-and-hold or a drag simply dies. Surfaces that own\n// their gesture have to opt out.\n//\n// What the two classes below cover, precisely:\n// - `-webkit-touch-callout: none` stops iOS's long-press callout. WebKit-only:\n// it is not a property other engines have, so it is inert everywhere else.\n// - `user-select: none` stops the long-press selection on every engine,\n// Android included, and stops a drag from painting a selection under the\n// cursor. It is inherited, so it reaches every descendant — which is why the\n// two classes differ only in whether they apply it unconditionally.\n// What neither covers:\n// - Chrome for Android's long-press menu on a link or an image. No CSS\n// suppresses it; a gesture surface that wraps one needs its own\n// `onContextMenu` with `preventDefault()`.\n// - The native drag of an `` or `` descendant. `-webkit-user-drag` is\n// not inherited and plain divs and buttons are not drag sources, so setting\n// it on the surface does nothing — the child itself needs `draggable={false}`.\n\n/**\n * Classes for a surface that *is* the control: a thumb, a drum, a stage, a\n * handle, a hold button. Selection is suppressed on every input, because a\n * drag that highlights the control's own label is wrong on a mouse too.\n * Compose with `touch-none` when the surface also owns the scroll axis — leave\n * it off when the page must still scroll from there.\n */\nexport const TOUCH_GESTURE_CLASS = \"select-none [-webkit-touch-callout:none]\";\n\n/**\n * The same opt-out for a gesture surface that wraps content the consumer owns:\n * a scroller, a context-menu trigger, a sheet header, a list row. Selection is\n * suppressed only where the platform runs its own press gestures — a coarse\n * pointer — so a mouse user can still select and copy that content. If the\n * gesture itself would paint a selection under the cursor, add `select-none`\n * for the duration of the gesture rather than reaching for\n * `TOUCH_GESTURE_CLASS`.\n *\n * `pointer: coarse` describes the *primary* pointer and nothing else, so a\n * hybrid machine reads it wrong in both directions: a tablet with a mouse\n * plugged in keeps touch as primary and loses mouse selection, and a laptop\n * with a touchscreen keeps the mouse as primary and leaves selection live\n * under a finger. No media query can answer per interaction — the query is\n * about the device, and the question is about the gesture in progress. The\n * default stays here because it is right on the machines that are one thing or\n * the other, and losing a selection is a nuisance; where the miss costs a\n * *gesture* instead, the surface pairs it with `holdSelection` on the press.\n */\nexport const TOUCH_GESTURE_CONTENT_CLASS =\n \"[-webkit-touch-callout:none] pointer-coarse:select-none\";\n\n/**\n * Suppress selection on `element` for as long as a gesture is running on it,\n * whatever the primary pointer of the machine happens to be. Returns the\n * release. Inline, so it wins over the class above and is gone again the\n * moment the gesture ends.\n *\n * For the press gestures a native selection would otherwise steal — a\n * long-press that opens a menu. Elsewhere prefer the classes: a surface that\n * takes selection away for the whole session is a surface whose text nobody\n * can copy.\n */\nexport function holdSelection(element: HTMLElement) {\n element.style.setProperty(\"user-select\", \"none\");\n element.style.setProperty(\"-webkit-user-select\", \"none\");\n return () => {\n element.style.removeProperty(\"user-select\");\n element.style.removeProperty(\"-webkit-user-select\");\n };\n}\n\n/**\n * Pointer capture, best effort. WebKit throws `NotFoundError` when the pointer\n * is already gone by the time the handler runs — routine on iOS, where the\n * system can claim the touch first — and an uncaught throw takes the rest of\n * the handler, the gesture included, down with it. Touch pointers carry\n * implicit capture anyway, so losing it is never fatal.\n */\nexport function capturePointer(element: Element, pointerId: number) {\n try {\n element.setPointerCapture(pointerId);\n } catch {\n // Pointer is no longer active — implicit capture still applies on touch.\n }\n}\n\n/** Release a capture taken with `capturePointer`, ignoring a stale pointer. */\nexport function releasePointer(element: Element, pointerId: number) {\n try {\n if (element.hasPointerCapture(pointerId)) {\n element.releasePointerCapture(pointerId);\n }\n } catch {\n // Capture was already dropped by the browser.\n }\n}\n\n/**\n * Whether this event came from a pointer that is *hovering*: not a touch, and\n * not currently pressed. Which input the user is holding right now is not\n * something a device capability can answer — a touchscreen laptop hovers and\n * taps, and iPadOS reports a fine hovering pointer for a finger — so both\n * paths stay live and each handler branches on the event it was given.\n *\n * A pen resting on the glass is making contact, not hovering: `buttons` is the\n * tell, and it sends a pen tap down the same route a finger takes.\n *\n * This answers what an *enter* asks. A leave is the other half of a pair and\n * has to be read against the enter that started it — `useHoverGesture` in\n * `lib/hooks/use-hover-gesture` does that, and hover surfaces should use it\n * rather than asking this question twice.\n */\nexport const isHoveringPointer = (event: {\n pointerType: string;\n buttons: number;\n}) => event.pointerType !== \"touch\" && event.buttons === 0;\n"},{"path":"components/previews/motion/preview-rail.preview.tsx","type":"preview","content":"\"use client\";\n\nimport { PreviewRail } from \"@/components/motion/preview-rail\";\n\nexport const previewRailItems = [\n {\n id: \"dashboard\",\n label: \"Dashboard\",\n description: \"Return to your workspace overview and recent activity.\",\n href: \"#dashboard\",\n },\n {\n id: \"components\",\n label: \"Components\",\n description: \"Browse motion primitives for React and Next.js.\",\n href: \"#components\",\n },\n {\n id: \"blocks\",\n label: \"Blocks\",\n description: \"Explore composed, product-ready interface blocks.\",\n href: \"#blocks\",\n },\n {\n id: \"playground\",\n label: \"Playground\",\n description: \"Tune motion values and preview behavior live.\",\n href: \"#playground\",\n },\n {\n id: \"docs\",\n label: \"Documentation\",\n description: \"Read installation, usage, and API reference notes.\",\n href: \"#docs\",\n },\n {\n id: \"changelog\",\n label: \"Changelog\",\n description: \"Review newly launched components and improvements.\",\n href: \"#changelog\",\n },\n {\n id: \"sponsors\",\n label: \"Sponsors\",\n description: \"Support continued development of the open-source library.\",\n href: \"#sponsors\",\n },\n {\n id: \"pro\",\n label: \"beUI Pro\",\n description: \"Get premium components and lifetime access.\",\n href: \"#pro\",\n },\n {\n id: \"examples\",\n label: \"Examples\",\n description: \"See components composed in practical interface patterns.\",\n href: \"#examples\",\n },\n {\n id: \"templates\",\n label: \"Templates\",\n description: \"Start from polished layouts built with beUI components.\",\n href: \"#templates\",\n },\n {\n id: \"guides\",\n label: \"Guides\",\n description: \"Learn how to combine motion primitives effectively.\",\n href: \"#guides\",\n },\n {\n id: \"community\",\n label: \"Community\",\n description: \"Discover what other builders are creating with beUI.\",\n href: \"#community\",\n },\n {\n id: \"github\",\n label: \"GitHub\",\n description: \"View the source, report issues, and contribute improvements.\",\n href: \"#github\",\n },\n {\n id: \"about\",\n label: \"About\",\n description: \"Learn more about the ideas and people behind beUI.\",\n href: \"#about\",\n },\n];\n\nexport function PreviewRailPreview() {\n return (\n
\n \n \n
\n );\n}\n"}]}