"use client" import * as React from "react" import { AnimatePresence, motion } from "motion/react" import { cn } from "@/lib/utils" /* ============================================================================= * Notch — morphing bottom toolbar for Motoko UI * * The shell itself expands via layout animation. Opening a group swaps the * trigger row for a staggered options list (AnimatePresence popLayout) — * no detached dropdown, nothing clipped by the bar width. * ============================================================================= */ export type NotchOption = { /** Stable identifier passed back in callbacks. */ id: string /** What renders for this option. */ label: React.ReactNode /** Optional leading node (icon, swatch, etc.). */ icon?: React.ReactNode } export type NotchItem = { /** Stable identifier for the group. */ id: string /** Trigger label shown in the bar. */ label: React.ReactNode /** Optional leading icon for the trigger. */ icon?: React.ReactNode /** The choices revealed when the group is opened. */ options: NotchOption[] /** Uncontrolled initial selected option id. */ defaultValue?: string /** Controlled selected option id. */ value?: string /** Show the selected value next to the trigger label. */ showValue?: boolean /** Fires with the selected option whenever it changes. */ onChange?: (optionId: string, option: NotchOption) => void } export interface NotchProps { /** The groups shown inside the notch. */ items: NotchItem[] /** * `bottom` / `top` pin to the viewport. * `inline` keeps the shell in normal flow (docs previews). */ position?: "top" | "bottom" | "inline" /** Horizontal alignment when pinned. */ align?: "start" | "center" | "end" /** Fired for any group change, in addition to the per-item callback. */ onItemChange?: (itemId: string, optionId: string, option: NotchOption) => void /** Close the panel after selecting an option. */ closeOnSelect?: boolean /** Show each group's selected value next to its trigger label. */ showSelectedValue?: boolean /** Render dividers between groups. */ showDividers?: boolean /** Distance from the pinned edge, in pixels. */ offset?: number /** Play the entrance animation on mount. */ reveal?: boolean /** Classes applied to the floating shell. */ className?: string /** Classes applied to every trigger. */ itemClassName?: string /** Classes applied to the options panel. */ panelClassName?: string } const SHELL_SPRING = { type: "spring" as const, stiffness: 380, damping: 34 } const LIST_VARIANTS = { hidden: {}, visible: { transition: { staggerChildren: 0.045, delayChildren: 0.08 } }, } const OPTION_VARIANTS = { hidden: { opacity: 0, y: -10, filter: "blur(4px)" }, visible: { opacity: 1, y: 0, filter: "blur(0px)", transition: { type: "spring" as const, stiffness: 420, damping: 30 }, }, } function NotchDivider() { return ( ) } function Notch({ items, position = "bottom", align = "center", onItemChange, closeOnSelect = true, showSelectedValue = true, showDividers = true, offset = 24, reveal = true, className, itemClassName, panelClassName, }: NotchProps) { const shellRef = React.useRef(null) const shellLayoutId = React.useId() const [openItemId, setOpenItemId] = React.useState(null) const [internalSelected, setInternalSelected] = React.useState< Record >(() => { const map: Record = {} for (const item of items) { if (item.value === undefined) { map[item.id] = item.defaultValue ?? item.options[0]?.id ?? "" } } return map }) React.useEffect(() => { function onKey(e: KeyboardEvent) { if (e.key === "Escape") setOpenItemId(null) } window.addEventListener("keydown", onKey) return () => window.removeEventListener("keydown", onKey) }, []) React.useEffect(() => { if (!openItemId) return function onPointerDown(e: PointerEvent) { if (!shellRef.current?.contains(e.target as Node)) setOpenItemId(null) } document.addEventListener("pointerdown", onPointerDown) return () => document.removeEventListener("pointerdown", onPointerDown) }, [openItemId]) const getSelectedId = (item: NotchItem) => item.value ?? internalSelected[item.id] ?? item.options[0]?.id const getSelectedOption = (item: NotchItem) => item.options.find((o) => o.id === getSelectedId(item)) const handleSelect = (item: NotchItem, option: NotchOption) => { if (item.value === undefined) { setInternalSelected((prev) => ({ ...prev, [item.id]: option.id })) } item.onChange?.(option.id, option) onItemChange?.(item.id, option.id, option) if (closeOnSelect) setOpenItemId(null) } const alignClass = align === "start" ? "justify-start" : align === "end" ? "justify-end" : "justify-center" const edgeOffset = (offset + 20) * (position === "top" ? -1 : 1) const openItem = items.find((i) => i.id === openItemId) ?? null const optionsPanel = openItem ? ( ) : ( {items.map((item, index) => { const selected = getSelectedOption(item) const isLast = index === items.length - 1 return ( {showDividers && !isLast ? : null} ) })} ) const shell = ( ) if (position === "inline") { return shell } return (

{shell}

) } export { Notch, NotchDivider }