{"slug":"tabs","name":"Tabs","description":"Pill, segment or underline tabs with a spring layoutId indicator.","category":"motion","source_url":"https://beui.saura3h.xyz/r/tabs/raw","detail_url":"https://beui.saura3h.xyz/r/tabs","raw_url":"https://beui.saura3h.xyz/r/tabs/raw","page_url":"https://beui.saura3h.xyz/components/motion/tabs","dependencies":["motion","react"],"internal":["@/components/motion/tabs","@/lib/utils"],"files":[{"path":"components/motion/tabs.tsx","type":"component","content":"\"use client\";\n\nimport { motion, MotionConfig, type Transition } from \"motion/react\";\nimport { createContext, useContext, useId, useState, type ReactNode } from \"react\";\nimport { cn } from \"@/lib/utils\";\n\ntype Variant = \"pill\" | \"underline\" | \"segment\";\n\ntype Ctx = {\n  value: string;\n  setValue: (v: string) => void;\n  layoutId: string;\n  variant: Variant;\n};\n\nconst TabsCtx = createContext<Ctx | null>(null);\n\nfunction useTabs() {\n  const ctx = useContext(TabsCtx);\n  if (!ctx) throw new Error(\"Tabs.* must be used inside <Tabs>\");\n  return ctx;\n}\n\n// Weighty spring — borrowed from dimi.me/lab/animated-tabs.\nconst transition: Transition = {\n  type: \"spring\",\n  stiffness: 170,\n  damping: 24,\n  mass: 1.2,\n};\n\nexport function Tabs({\n  defaultValue,\n  value,\n  onValueChange,\n  variant = \"pill\",\n  children,\n  className,\n}: {\n  defaultValue?: string;\n  value?: string;\n  onValueChange?: (v: string) => void;\n  variant?: Variant;\n  children: ReactNode;\n  className?: string;\n}) {\n  const [internal, setInternal] = useState(defaultValue ?? \"\");\n  const layoutId = useId();\n  const controlled = value !== undefined;\n  const current = controlled ? value : internal;\n  const setValue = (v: string) => {\n    if (!controlled) setInternal(v);\n    onValueChange?.(v);\n  };\n  return (\n    <MotionConfig transition={transition}>\n      <TabsCtx.Provider value={{ value: current, setValue, layoutId, variant }}>\n        <div className={className}>{children}</div>\n      </TabsCtx.Provider>\n    </MotionConfig>\n  );\n}\n\nconst listClasses: Record<Variant, string> = {\n  pill: \"inline-flex items-center gap-1 rounded-full bg-(--color-bg-elev) p-1\",\n  underline: \"inline-flex items-center gap-1 border-b border-(--color-border)\",\n  segment: \"inline-flex items-center gap-0 rounded-lg bg-(--color-bg-elev) p-0.5\",\n};\n\nexport function TabsList({ children, className }: { children: ReactNode; className?: string }) {\n  const { variant } = useTabs();\n  return (\n    <div role=\"tablist\" className={cn(listClasses[variant], className)}>\n      {children}\n    </div>\n  );\n}\n\nexport function TabsTrigger({ value, children, className }: { value: string; children: ReactNode; className?: string }) {\n  const { value: current, setValue, layoutId, variant } = useTabs();\n  const active = current === value;\n\n  if (variant === \"underline\") {\n    return (\n      <button\n        type=\"button\"\n        role=\"tab\"\n        aria-selected={active}\n        onClick={() => setValue(value)}\n        className={cn(\n          \"relative isolate px-3 pb-2.5 pt-1 -mb-px text-sm font-medium transition-colors\",\n          active ? \"text-(--color-fg)\" : \"text-(--color-fg-muted) hover:text-(--color-fg)\",\n          className,\n        )}\n      >\n        {children}\n        {active ? (\n          <motion.span\n            layoutId={layoutId}\n            className=\"absolute -bottom-px left-0 right-0 h-px bg-(--color-fg)\"\n          />\n        ) : null}\n      </button>\n    );\n  }\n\n  // Pill + Segment use the same trick: a max-contrast pill slides via layoutId,\n  // text uses `mix-blend-exclusion` so it inverts dynamically against the moving bg.\n  const radius = variant === \"pill\" ? \"rounded-full\" : \"rounded-md\";\n\n  return (\n    <div className=\"relative\">\n      {active ? (\n        <motion.span\n          layoutId={layoutId}\n          style={{ borderRadius: variant === \"pill\" ? 9999 : 8 }}\n          className={cn(\n            \"absolute inset-0 bg-(--color-fg) shadow-[0_1px_6px_rgb(0_0_0/0.06)]\",\n            radius,\n          )}\n        />\n      ) : null}\n      <button\n        type=\"button\"\n        role=\"tab\"\n        aria-selected={active}\n        onClick={() => setValue(value)}\n        className={cn(\n          \"relative z-10 inline-flex items-center justify-center whitespace-nowrap bg-transparent px-3.5 py-1.5 text-sm font-medium text-white mix-blend-exclusion transition-opacity outline-none\",\n          active ? \"\" : \"opacity-70 hover:opacity-100\",\n          radius,\n          className,\n        )}\n      >\n        {children}\n      </button>\n    </div>\n  );\n}\n\nexport function TabsContent({ value, children, className }: { value: string; children: ReactNode; className?: string }) {\n  const { value: current } = useTabs();\n  if (current !== value) return null;\n  return (\n    <motion.div\n      key={value}\n      initial={{ opacity: 0, y: 4 }}\n      animate={{ opacity: 1, y: 0 }}\n      transition={{ duration: 0.18, ease: [0.16, 1, 0.3, 1] }}\n      className={cn(\"mt-4\", className)}\n    >\n      {children}\n    </motion.div>\n  );\n}\n"},{"path":"components/previews/motion/tabs.preview.tsx","type":"preview","content":"\"use client\";\n\nimport { Tabs, TabsContent, TabsList, TabsTrigger } from \"@/components/motion/tabs\";\n\nexport function TabsPreview() {\n  return (\n    <div className=\"flex w-full max-w-md flex-col gap-8\">\n      <Section title=\"Pill\">\n        <Tabs defaultValue=\"overview\" variant=\"pill\">\n          <TabsList>\n            <TabsTrigger value=\"overview\">Overview</TabsTrigger>\n            <TabsTrigger value=\"activity\">Activity</TabsTrigger>\n            <TabsTrigger value=\"settings\">Settings</TabsTrigger>\n          </TabsList>\n          <TabsContent value=\"overview\" className=\"text-sm text-(--color-fg-muted)\">High-level summary.</TabsContent>\n          <TabsContent value=\"activity\" className=\"text-sm text-(--color-fg-muted)\">Recent events.</TabsContent>\n          <TabsContent value=\"settings\" className=\"text-sm text-(--color-fg-muted)\">Preferences.</TabsContent>\n        </Tabs>\n      </Section>\n      <Section title=\"Segment\">\n        <Tabs defaultValue=\"day\" variant=\"segment\">\n          <TabsList>\n            <TabsTrigger value=\"day\">Day</TabsTrigger>\n            <TabsTrigger value=\"week\">Week</TabsTrigger>\n            <TabsTrigger value=\"month\">Month</TabsTrigger>\n          </TabsList>\n        </Tabs>\n      </Section>\n      <Section title=\"Underline\">\n        <Tabs defaultValue=\"all\" variant=\"underline\">\n          <TabsList>\n            <TabsTrigger value=\"all\">All</TabsTrigger>\n            <TabsTrigger value=\"open\">Open</TabsTrigger>\n            <TabsTrigger value=\"closed\">Closed</TabsTrigger>\n          </TabsList>\n        </Tabs>\n      </Section>\n    </div>\n  );\n}\n\nfunction Section({ title, children }: { title: string; children: React.ReactNode }) {\n  return (\n    <div className=\"flex flex-col gap-2\">\n      <span className=\"text-[10px] font-semibold uppercase tracking-wider text-(--color-fg-muted)\">{title}</span>\n      {children}\n    </div>\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"}]}