"use client"; import { useEffect, useId, useMemo, useState } from "react"; import { AnimatePresence, motion, useReducedMotion } from "framer-motion"; import { ChevronLeft, ChevronRight, Layers, MoreHorizontal } from "lucide-react"; import { cn } from "@/lib/utils"; /* ------------------------------------------------------------------ */ /* Range logic */ /* ------------------------------------------------------------------ */ type PageItem = number | "left-ellipsis" | "right-ellipsis"; function span(start: number, end: number): number[] { const out: number[] = []; for (let i = start; i <= end; i += 1) out.push(i); return out; } /** * Compute the visible page items with first/last anchors and collapsed * ellipses. Mirrors the well-worn MUI/usePagination behaviour. */ function usePageItems(total: number, page: number, siblingCount: number): PageItem[] { return useMemo(() => { const pages = Math.max(1, total); // first + last + current + 2 ellipses + siblings on both sides const slots = siblingCount * 2 + 5; if (pages <= slots) return span(1, pages); const left = Math.max(page - siblingCount, 1); const right = Math.min(page + siblingCount, pages); const showLeft = left > 2; const showRight = right < pages - 1; const edge = 3 + siblingCount * 2; if (!showLeft && showRight) { return [...span(1, edge), "right-ellipsis", pages]; } if (showLeft && !showRight) { return [1, "left-ellipsis", ...span(pages - edge + 1, pages)]; } return [1, "left-ellipsis", ...span(left, right), "right-ellipsis", pages]; }, [total, page, siblingCount]); } /* ------------------------------------------------------------------ */ /* Pagination */ /* ------------------------------------------------------------------ */ const PILL_SPRING = { type: "spring", stiffness: 460, damping: 38, mass: 0.9 } as const; export interface PaginationProps { total: number; page?: number; defaultPage?: number; onChange?: (page: number) => void; siblingCount?: number; layoutId?: string; ariaLabel?: string; className?: string; } /** * Animated pagination control with a sliding active pill (shared layout * animation), prev/next chevrons that disable at the ends, and collapsed * ellipses for long ranges. Controlled via `page`/`onChange` or * uncontrolled via `defaultPage`. */ export function Pagination({ total, page, defaultPage = 1, onChange, siblingCount = 1, layoutId, ariaLabel = "Pagination", className, }: PaginationProps) { const reactId = useId(); const pillId = layoutId ?? `pagination-pill-${reactId}`; const [internal, setInternal] = useState(defaultPage); const current = Math.min(Math.max(page ?? internal, 1), Math.max(1, total)); const items = usePageItems(total, current, siblingCount); function go(next: number) { const clamped = Math.min(Math.max(next, 1), Math.max(1, total)); if (clamped === current) return; if (page === undefined) setInternal(clamped); onChange?.(clamped); } const atStart = current <= 1; const atEnd = current >= total; return (

go(current - 1)} />

go(item)} whileTap={{ scale: 0.92 }} transition={{ type: "spring", stiffness: 600, damping: 30 }} className={cn( "relative flex h-9 min-w-9 items-center justify-center rounded-xl px-2 text-[13px] font-medium tabular-nums", "outline-none transition-colors duration-200 focus-visible:ring-2 focus-visible:ring-brand/50", isActive ? "text-white" : "text-zinc-400 hover:text-zinc-200" )} > {isActive && ( )} {item}

go(current + 1)} />

); } function Arrow({ direction, disabled, onClick, }: { direction: "prev" | "next"; disabled: boolean; onClick: () => void; }) { const Icon = direction === "prev" ? ChevronLeft : ChevronRight; return ( ); } /* ------------------------------------------------------------------ */ /* Demo */ /* ------------------------------------------------------------------ */ interface Slide { tag: string; name: string; blurb: string; from: string; to: string; } const SLIDES: Slide[] = [ { tag: "Dashboard", name: "Nebula Analytics", blurb: "Realtime product metrics with cohort retention baked in.", from: "#7c6cff", to: "#5b8cff", }, { tag: "Email", name: "Signal Inbox", blurb: "A keyboard-first client that triages itself while you sleep.", from: "#5b8cff", to: "#56d0c9", }, { tag: "Knowledge", name: "Orbit Docs", blurb: "Living documentation that stays in sync with your codebase.", from: "#6f8dff", to: "#7c6cff", }, { tag: "Payments", name: "Vault Billing", blurb: "Usage metering, invoices, and dunning without the spreadsheets.", from: "#9a7bff", to: "#7c6cff", }, { tag: "Monitoring", name: "Pulse Status", blurb: "Incident timelines and uptime history your customers can trust.", from: "#4fd1c5", to: "#5b8cff", }, { tag: "Sales", name: "Atlas CRM", blurb: "Pipeline that updates from the conversations you already have.", from: "#8b7bff", to: "#b58bff", }, ]; const ADVANCE_MS = 2900; export default function Demo() { const [page, setPage] = useState(1); const [locked, setLocked] = useState(false); const reduce = useReducedMotion(); const slide = SLIDES[page - 1] ?? SLIDES[0]; // Idle cinema: quietly walk the pages until the visitor takes over. useEffect(() => { if (locked || reduce) return; const t = setInterval(() => { setPage((prev) => (prev % SLIDES.length) + 1); }, ADVANCE_MS); return () => clearInterval(t); }, [locked, reduce]); function handleChange(next: number) { setLocked(true); setPage(next); } return (

{/* ambient top glow */}

Featured collection

Page {page} of {SLIDES.length}

{/* preview */}

{page < 10 ? `0${page}` : page}

{slide.tag}

{slide.name}

{slide.blurb}

{/* control */}

); }