Are the ai2 Motion menubars free?

Yes. The whole styled layer is free and MIT licensed, like the component core.

Can I change the size?

Yes. Every variation takes a size prop of sm, md, lg or xl, aligned to the base Button height scale.

Motion menubars

Five menubars that keep one bar look and vary only how the menu enters and leaves: a slide, a plain fade, a pop, a spring and a vertical morph. Each is self-contained (no radix), sized, token-driven, switches menus on hover once one is open, and closes on outside click or Escape.

MenubarMotion

Installation

The styled layer is free and installs like any other ai2 component.

Run the following command

npx shadcn@latest add @ai2/menubar-motion

Dependencies, the @ai2/tokens theme and the component file are installed together.

Install dependencies

npm install motion

Copy the source

components/ui/menubar-motion.tsx

"use client"

import * as React from "react"
import { AnimatePresence, motion, useReducedMotion } from "motion/react"

import { cn } from "@/lib/utils"

/* Motion menubar family: 5 decorative, SELF-SUFFICIENT menubars. NO radix or
   portal. The bar looks the same in every variant - the whole difference is in the
   menu's OPEN/CLOSE motion: slide, fade, pop, spring and morph. Classic menubar
   behavior: while one menu is open, hovering a sibling trigger switches to that
   menu. It closes on an outside click, on Escape (focus returns to the trigger) and
   on an item selection. Left/Right arrows move between the top-level menus and
   Up/Down moves inside the open one. No transform under reduced motion (only a
   fade). Color comes ONLY from tokens, via alpha color-mix. */

export type StyledSize = "sm" | "md" | "lg" | "xl"

type MenuItem = { label: React.ReactNode; onSelect?: () => void }
type Menu = { label: React.ReactNode; items: MenuItem[] }

interface MenubarProps {
  className?: string
  size?: StyledSize
  menus?: Menu[]
}

const defaultMenus: Menu[] = [
  {
    label: "File",
    items: [
      { label: "New File" },
      { label: "Open..." },
      { label: "Save" },
      { label: "Save As..." },
    ],
  },
  {
    label: "Edit",
    items: [
      { label: "Undo" },
      { label: "Redo" },
      { label: "Cut" },
      { label: "Copy" },
      { label: "Paste" },
    ],
  },
  {
    label: "View",
    items: [{ label: "Zoom In" }, { label: "Zoom Out" }, { label: "Full Screen" }],
  },
]

const barSize: Record<StyledSize, string> = {
  sm: "h-8 gap-0.5 px-1 text-xs",
  md: "h-9 gap-1 px-1 text-sm",
  lg: "h-10 gap-1 px-1.5 text-sm",
  xl: "h-11 gap-1.5 px-2 text-base",
}

const triggerSize: Record<StyledSize, string> = {
  sm: "h-6 px-2",
  md: "h-7 px-2.5",
  lg: "h-8 px-3",
  xl: "h-9 px-3.5",
}

const panelSize: Record<StyledSize, string> = {
  sm: "min-w-40 text-xs",
  md: "min-w-44 text-sm",
  lg: "min-w-48 text-sm",
  xl: "min-w-52 text-base",
}

const itemSize: Record<StyledSize, string> = {
  sm: "px-2 py-1.5",
  md: "px-2.5 py-1.5",
  lg: "px-3 py-2",
  xl: "px-3.5 py-2",
}

const softHover =
  "hover:bg-[color-mix(in_oklab,var(--color-foreground)_6%,transparent)]"

const triggerBase =
  "inline-flex select-none items-center gap-1.5 whitespace-nowrap rounded-md font-medium outline-none transition-colors focus-visible:ring-[3px] focus-visible:ring-ring/50 [&>svg]:size-4 [&>svg]:shrink-0 [&>i]:text-base [&>i]:leading-none"

const itemBase =
  "flex w-full cursor-default select-none items-center gap-2 rounded-md text-left text-popover-foreground outline-none transition-colors focus-visible:ring-[3px] focus-visible:ring-ring/50 [&>svg]:size-4 [&>svg]:shrink-0 [&>i]:text-base [&>i]:leading-none"

const panelBase =
  "absolute left-0 top-full z-50 mt-1.5 rounded-lg border border-border bg-popover p-1 text-popover-foreground shadow-lg outline-none"

type MotionSpec = {
  initial: Record<string, number | string>
  animate: Record<string, number | string>
  exit: Record<string, number | string>
  transition: Record<string, unknown>
  origin?: string
}

const fadeOnly: MotionSpec = {
  initial: { opacity: 0 },
  animate: { opacity: 1 },
  exit: { opacity: 0 },
  transition: { duration: 0.12 },
}

/* The shared menubar core. The panel is always absolutely positioned inside the
   relative wrapper of its own trigger, so many examples on a single page never
   collide. */
function MenubarCore({ props, spec }: { props: MenubarProps; spec: MotionSpec }) {
  const { className, size = "md", menus = defaultMenus } = props
  const reduce = useReducedMotion()
  const uid = React.useId()
  const [openIndex, setOpenIndex] = React.useState<number | null>(null)
  const [autoFocusItem, setAutoFocusItem] = React.useState(false)
  const rootRef = React.useRef<HTMLDivElement>(null)
  const triggerRefs = React.useRef<Array<HTMLButtonElement | null>>([])
  const itemRefs = React.useRef<Array<HTMLButtonElement | null>>([])

  React.useEffect(() => {
    if (openIndex === null) return
    const onKey = (e: KeyboardEvent) => {
      if (e.key !== "Escape") return
      triggerRefs.current[openIndex]?.focus()
      setOpenIndex(null)
    }
    const onPointer = (e: PointerEvent) => {
      const node = rootRef.current
      if (node && e.target instanceof Node && !node.contains(e.target)) {
        setOpenIndex(null)
      }
    }
    window.addEventListener("keydown", onKey)
    window.addEventListener("pointerdown", onPointer)
    return () => {
      window.removeEventListener("keydown", onKey)
      window.removeEventListener("pointerdown", onPointer)
    }
  }, [openIndex])

  React.useEffect(() => {
    if (openIndex === null || !autoFocusItem) return
    const id = window.requestAnimationFrame(() => itemRefs.current[0]?.focus())
    setAutoFocusItem(false)
    return () => window.cancelAnimationFrame(id)
  }, [openIndex, autoFocusItem])

  const moveTrigger = (from: number, dir: 1 | -1) => {
    const next = (from + dir + menus.length) % menus.length
    triggerRefs.current[next]?.focus()
    if (openIndex !== null) setOpenIndex(next)
  }

  const onTriggerKeyDown = (e: React.KeyboardEvent, i: number) => {
    if (e.key === "ArrowRight") {
      e.preventDefault()
      moveTrigger(i, 1)
    } else if (e.key === "ArrowLeft") {
      e.preventDefault()
      moveTrigger(i, -1)
    } else if (e.key === "ArrowDown") {
      e.preventDefault()
      setOpenIndex(i)
      setAutoFocusItem(true)
    }
  }

  const onItemKeyDown = (e: React.KeyboardEvent, j: number, count: number, i: number) => {
    if (e.key === "ArrowDown") {
      e.preventDefault()
      itemRefs.current[(j + 1) % count]?.focus()
    } else if (e.key === "ArrowUp") {
      e.preventDefault()
      itemRefs.current[(j - 1 + count) % count]?.focus()
    } else if (e.key === "ArrowRight" || e.key === "ArrowLeft") {
      e.preventDefault()
      moveTrigger(i, e.key === "ArrowRight" ? 1 : -1)
      setAutoFocusItem(true)
    }
  }

  const active = reduce ? fadeOnly : spec

  return (
    <div
      ref={rootRef}
      data-slot="styled-menubar"
      role="menubar"
      className={cn(
        "inline-flex items-center rounded-lg border border-border bg-card shadow-xs",
        barSize[size],
        className
      )}
    >
      {menus.map((menu, i) => {
        const isOpen = openIndex === i
        const triggerId = `${uid}-trigger-${i}`
        const menuId = `${uid}-menu-${i}`
        return (
          <div key={i} className="relative">
            <button
              type="button"
              id={triggerId}
              ref={(node) => {
                triggerRefs.current[i] = node
              }}
              role="menuitem"
              aria-haspopup="menu"
              aria-expanded={isOpen}
              aria-controls={isOpen ? menuId : undefined}
              onClick={() => setOpenIndex(isOpen ? null : i)}
              onPointerEnter={() => {
                if (openIndex !== null) setOpenIndex(i)
              }}
              onKeyDown={(e) => onTriggerKeyDown(e, i)}
              className={cn(
                triggerBase,
                triggerSize[size],
                isOpen
                  ? "bg-accent text-accent-foreground"
                  : cn("text-foreground", softHover)
              )}
            >
              {menu.label}
            </button>

            <AnimatePresence>
              {isOpen ? (
                <motion.div
                  id={menuId}
                  role="menu"
                  aria-labelledby={triggerId}
                  className={cn(panelBase, panelSize[size], !reduce && spec.origin)}
                  initial={active.initial}
                  animate={active.animate}
                  exit={active.exit}
                  transition={active.transition}
                >
                  {menu.items.map((item, j) => (
                    <button
                      key={j}
                      type="button"
                      role="menuitem"
                      ref={(node) => {
                        if (openIndex === i) itemRefs.current[j] = node
                      }}
                      onClick={() => {
                        item.onSelect?.()
                        triggerRefs.current[i]?.focus()
                        setOpenIndex(null)
                      }}
                      onKeyDown={(e) => onItemKeyDown(e, j, menu.items.length, i)}
                      className={cn(itemBase, itemSize[size], softHover)}
                    >
                      {item.label}
                    </button>
                  ))}
                </motion.div>
              ) : null}
            </AnimatePresence>
          </div>
        )
      })}
    </div>
  )
}

/* Slide: the menu opens by sliding down from above. */
export function SlideMenubar({ className, size = "md", menus }: MenubarProps) {
  return (
    <MenubarCore
      props={{ className, size, menus }}
      spec={{
        initial: { opacity: 0, y: -10 },
        animate: { opacity: 1, y: 0 },
        exit: { opacity: 0, y: -10 },
        transition: { duration: 0.18, ease: "easeOut" },
      }}
    />
  )
}

/* Fade: no transform, only an opacity transition. */
export function FadeMenubar({ className, size = "md", menus }: MenubarProps) {
  return (
    <MenubarCore
      props={{ className, size, menus }}
      spec={{
        initial: { opacity: 0 },
        animate: { opacity: 1 },
        exit: { opacity: 0 },
        transition: { duration: 0.22, ease: "easeOut" },
      }}
    />
  )
}

/* Pop: it opens from the top corner of the trigger by growing from small. */
export function PopMenubar({ className, size = "md", menus }: MenubarProps) {
  return (
    <MenubarCore
      props={{ className, size, menus }}
      spec={{
        initial: { opacity: 0, scale: 0.88 },
        animate: { opacity: 1, scale: 1 },
        exit: { opacity: 0, scale: 0.88 },
        transition: { duration: 0.16, ease: "easeOut" },
        origin: "origin-top-left",
      }}
    />
  )
}

/* Spring: yayli, hafif zipla-yerlese acilis. */
export function SpringMenubar({ className, size = "md", menus }: MenubarProps) {
  return (
    <MenubarCore
      props={{ className, size, menus }}
      spec={{
        initial: { opacity: 0, scale: 0.94, y: -8 },
        animate: { opacity: 1, scale: 1, y: 0 },
        exit: { opacity: 0, scale: 0.94, y: -8 },
        transition: { type: "spring" as const, stiffness: 420, damping: 18 },
        origin: "origin-top",
      }}
    />
  )
}

/* Morph: the panel grows vertically like a banner unrolling downward. */
export function MorphMenubar({ className, size = "md", menus }: MenubarProps) {
  return (
    <MenubarCore
      props={{ className, size, menus }}
      spec={{
        initial: { opacity: 0, scaleY: 0.6, scaleX: 0.96 },
        animate: { opacity: 1, scaleY: 1, scaleX: 1 },
        exit: { opacity: 0, scaleY: 0.6, scaleX: 0.96 },
        transition: { duration: 0.2, ease: "easeOut" },
        origin: "origin-top",
      }}
    />
  )
}

Manual installs skip the @ai2/tokens theme, so add the token CSS from the theming guide or the tone colors will be missing.

Variations

5 takes on the same idea. Each is its own export, and every one accepts a size prop (sm, md, lg, xl) aligned to the base Button scale.

Slide

The menu slides down from under its trigger.

Fade

A pure opacity transition with no transform.

Pop

The menu scales up from the trigger corner.

Spring

A springy open that settles with a small overshoot.

Morph

The panel unrolls vertically from its top edge.

ai2 Motion menubars: 5 styled variations on the token system

The ai2 Motion menubars are a set of 5 decorative button variations from the styled layer of the @ai2 design system, built around application menu bars that vary the menu open and close motion. They are free and MIT licensed, and every color comes from a semantic token, so they theme with the rest of ai2 in light and dark.

Motion runs on framer-motion: framer-motion animates each dropdown enter and exit differently. The styled layer is opt-in, so the dependency only lands if you use it; the base components stay lean. Under reduced motion, the transforms are skipped and the menu fades in place.

What is in the ai2 Motion menubars?

5 exports in one file: Slide, Fade, Pop, Spring and Morph. Each renders a native button and takes a size prop (sm, md, lg, xl) aligned to the base Button. They are separate from the base Button on purpose: the base keeps its clean variant, tone and size axes, while the styled layer carries the effects.

You own the file. Copy the one category file and you have all 5 variations, with no runtime dependency on ai2 itself.

Why use it

On-system by construction: Every color resolves to an ai2 semantic token, so the buttons follow your theme in light and dark with no extra work.
Effect without the sprawl: The decorations live in a dedicated styled file, so the base Button keeps its clean, predictable API.
Accessible and honest: Each renders a real button element, keeps a visible focus ring, and respects prefers-reduced-motion.

Features

Token-driven color: No hardcoded hex or oklch; the look recolors with your theme tokens.
framer-motion: framer-motion animates each dropdown enter and exit differently.
Reduced-motion aware: Under prefers-reduced-motion, the transforms are skipped and the menu fades in place.
Size aligned to the base: Every variation takes sm, md, lg and xl matching the base Button height scale, so styled and base buttons line up in a row.

Production tips

Use it for emphasis, not everywhere: Styled buttons draw the eye. Reserve them for the one action you want people to take on a screen, and use the base Button for the rest.
Keep labels as verbs: The decoration adds weight, so a clear action label keeps the button scannable.
Pick one variation per surface: The variations share a family; using two different ones in the same view competes for attention.

Works with the rest of ai2

The Motion menubars sit alongside the base Button and the rest of the @ai2 registry. They share the same token file, so a styled action next to a base button or a badge stays visually consistent in both modes.