Dropdown menu

"use client";import * as React from "react";import { createPortal } from "react-dom";import { enterStyle, themeVars, useDismiss, useFloating, usePresence, type Align, type Side } from "./floating";import { MenuList, type MenuEntry } from "./menu-list";import { useInteractionReducedMotion } from "./ui-interaction-motion";/* ───────────────────────────────────────────────────────── * DROPDOWN MENU: actions behind a button * *   open     the menu rises off the trigger out of a blur, from *            the point on the trigger nearest to it; it flips *            above when there's no room below *   move     one highlight glides between rows *   pick     the menu closes and focus goes back to the trigger; *            checkbox rows draw their tick and stay open * * Opening from the keyboard (Enter, Space, ↓) focuses the first * row; ↑ focuses the last. Escape or a press outside closes it. * ───────────────────────────────────────────────────────── */export type { MenuEntry } from "./menu-list";export interface DropdownMenuProps {  /** The button that opens it. It gets aria-haspopup, aria-expanded and the click. */  trigger: React.ReactElement<React.HTMLAttributes<HTMLElement>>;  items: MenuEntry[];  side?: Side;  align?: Align;  open?: boolean;  onOpenChange?: (open: boolean) => void;  /** Accessible name of the menu. */  label?: string;  /** Minimum width in px; never narrower than the trigger. */  minWidth?: number;}export function DropdownMenu({ trigger, items, side = "bottom", align = "start", open: controlled, onOpenChange, label, minWidth = 200 }: DropdownMenuProps) {  const reduced = useInteractionReducedMotion();  const anchor = React.useRef<HTMLSpanElement>(null);  const surface = React.useRef<HTMLDivElement>(null);  const [own, setOwn] = React.useState(false);  const [focusOn, setFocusOn] = React.useState<"first" | "last" | "none">("none");  const open = controlled ?? own;  const { mounted, shown } = usePresence(open, 180);  const place = useFloating({ open: mounted, anchor, floating: surface, side, align, offset: 6 });  const [vars, setVars] = React.useState<React.CSSProperties>({});  const id = React.useId();  const triggerId = React.useId();  const setOpen = (next: boolean, refocus = false) => {    if (controlled === undefined) setOwn(next);    onOpenChange?.(next);    // By id rather than a ref: this runs from handlers that are created while rendering.    if (!next && refocus) document.getElementById(trigger.props.id ?? triggerId)?.focus();  };  useDismiss(open, (reason) => setOpen(false, reason === "escape"), [anchor, surface]);  const [width, setWidth] = React.useState(minWidth);  React.useLayoutEffect(() => {    if (!mounted) return;    setVars(themeVars(anchor.current));    setWidth(Math.max(minWidth, anchor.current?.offsetWidth ?? 0));  }, [mounted, minWidth]);  return (    <>      <span ref={anchor} className="inline-flex">        {React.cloneElement(trigger, {          id: trigger.props.id ?? triggerId,          "aria-haspopup": "menu",          "aria-expanded": open,          "aria-controls": open ? id : undefined,          onClick: (e: React.MouseEvent<HTMLElement>) => {            trigger.props.onClick?.(e);            setFocusOn(e.detail === 0 ? "first" : "none");            setOpen(!open);          },          onKeyDown: (e: React.KeyboardEvent<HTMLElement>) => {            trigger.props.onKeyDown?.(e);            if (e.key === "ArrowDown" || e.key === "ArrowUp") {              e.preventDefault();              setFocusOn(e.key === "ArrowDown" ? "first" : "last");              setOpen(true);            }          },        })}      </span>      {mounted &&        createPortal(          <div            ref={surface}            id={id}            className="fixed left-0 top-0 z-[55] overflow-hidden rounded-[14px] bg-popover text-popover-foreground shadow-[0_0_0_1px_var(--border)]"            style={{ ...vars, left: place.x, top: place.y, minWidth: width, transformOrigin: place.origin, ...enterStyle(shown, place.side, reduced) }}          >            <MenuList items={items} label={label} autoFocus={focusOn} onClose={() => setOpen(false, true)} />          </div>,          document.body,        )}    </>  );}export default DropdownMenu;

"use client";import * as React from "react";/* ───────────────────────────────────────────────────────── * FLOATING: what every popover, menu and tooltip shares * *   place     beside an anchor on a side, lined up start, centre *             or end; flips to the other side when it doesn't fit *             and shifts to stay `padding` inside the viewport; *             follows scroll and resize *   presence  mounts on open, shows a frame later (so the entry *             transitions run), hides, then unmounts after `exit` *   dismiss   Escape and a press outside both close it *   theme     the portal carries the anchor's theme tokens, so a *             light specimen on a dark page stays light * ───────────────────────────────────────────────────────── */export type Side = "top" | "bottom" | "left" | "right";export type Align = "start" | "center" | "end";const TOKENS = ["--background", "--foreground", "--popover", "--popover-foreground", "--border", "--accent", "--accent-foreground", "--primary", "--primary-foreground", "--muted", "--muted-foreground", "--ring", "--card"];/** The anchor's theme tokens as inline styles for something portalled out of its tree. */export function themeVars(anchor: Element | null): React.CSSProperties {  if (!anchor) return {};  const style = getComputedStyle(anchor);  const vars: Record<string, string> = {};  for (const t of TOKENS) {    const v = style.getPropertyValue(t);    if (v) vars[t] = v;  }  return vars as React.CSSProperties;}const OPPOSITE: Record<Side, Side> = { top: "bottom", bottom: "top", left: "right", right: "left" };export interface Placement {  x: number;  y: number;  side: Side;  /** Where the surface grows from, for transform-origin. */  origin: string;  ready: boolean;}/** Positions `floating` (position: fixed) next to `anchor` while `open`. Pass a point instead of an anchor for context menus. */export function useFloating({  open,  anchor,  point,  floating,  side = "bottom",  align = "center",  offset = 8,  padding = 8,}: {  open: boolean;  anchor?: React.RefObject<Element | null>;  point?: { x: number; y: number } | null;  floating: React.RefObject<HTMLElement | null>;  side?: Side;  align?: Align;  offset?: number;  padding?: number;}): Placement {  const [place, setPlace] = React.useState<Placement>({ x: -9999, y: -9999, side, origin: "center", ready: false });  React.useLayoutEffect(() => {    if (!open) return;    let frame = 0;    const measure = () => {      const el = floating.current;      if (!el) return;      const a = point        ? { left: point.x, right: point.x, top: point.y, bottom: point.y, width: 0, height: 0 }        : anchor?.current?.getBoundingClientRect();      if (!a) return;      const w = el.offsetWidth;      const h = el.offsetHeight;      const vw = window.innerWidth;      const vh = window.innerHeight;      const room: Record<Side, number> = { top: a.top - padding, bottom: vh - a.bottom - padding, left: a.left - padding, right: vw - a.right - padding };      const need = side === "top" || side === "bottom" ? h + offset : w + offset;      const s = room[side] < need && room[OPPOSITE[side]] > room[side] ? OPPOSITE[side] : side;      let x: number;      let y: number;      if (s === "top" || s === "bottom") {        y = s === "bottom" ? a.bottom + offset : a.top - offset - h;        x = align === "start" ? a.left : align === "end" ? a.right - w : a.left + a.width / 2 - w / 2;        if (point) x = a.left;      } else {        x = s === "right" ? a.right + offset : a.left - offset - w;        y = align === "start" ? a.top : align === "end" ? a.bottom - h : a.top + a.height / 2 - h / 2;      }      x = Math.max(padding, Math.min(vw - padding - w, x));      y = Math.max(padding, Math.min(vh - padding - h, y));      // Grow from the point on the anchor's edge nearest the surface.      const ox = s === "left" ? "100%" : s === "right" ? "0%" : `${Math.max(0, Math.min(w, a.left + a.width / 2 - x))}px`;      const oy = s === "top" ? "100%" : s === "bottom" ? "0%" : `${Math.max(0, Math.min(h, a.top + a.height / 2 - y))}px`;      const next = { x: Math.round(x), y: Math.round(y), side: s, origin: `${ox} ${oy}`, ready: true };      setPlace((p) => (p.x === next.x && p.y === next.y && p.side === next.side && p.origin === next.origin && p.ready ? p : next));    };    const schedule = () => {      cancelAnimationFrame(frame);      frame = requestAnimationFrame(measure);    };    measure();    const ro = new ResizeObserver(schedule);    if (floating.current) ro.observe(floating.current);    window.addEventListener("scroll", schedule, { capture: true, passive: true });    window.addEventListener("resize", schedule);    return () => {      cancelAnimationFrame(frame);      ro.disconnect();      window.removeEventListener("scroll", schedule, { capture: true });      window.removeEventListener("resize", schedule);    };  }, [open, anchor, point, floating, side, align, offset, padding]);  return open ? place : { ...place, ready: false };}/** Mount → show next frame → hide → unmount after `exit` ms. */export function usePresence(open: boolean, exit = 160) {  const [mounted, setMounted] = React.useState(open);  const [shown, setShown] = React.useState(false);  if (open && !mounted) setMounted(true);  React.useEffect(() => {    if (open) {      let inner = 0;      const outer = requestAnimationFrame(() => {        inner = requestAnimationFrame(() => setShown(true));      });      return () => {        cancelAnimationFrame(outer);        cancelAnimationFrame(inner);      };    }    const timer = window.setTimeout(() => {      setMounted(false);      setShown(false);    }, exit);    return () => window.clearTimeout(timer);  }, [open, exit]);  return { mounted: mounted || open, shown: open && shown };}/** Escape and presses outside `refs` call onDismiss while `open`. */export function useDismiss(open: boolean, onDismiss: (reason: "escape" | "outside") => void, refs: React.RefObject<Element | null>[]) {  const latest = React.useRef({ onDismiss, refs });  React.useEffect(() => {    latest.current = { onDismiss, refs };  });  React.useEffect(() => {    if (!open) return;    const onKey = (e: KeyboardEvent) => {      if (e.key !== "Escape") return;      e.stopPropagation();      latest.current.onDismiss("escape");    };    const onDown = (e: PointerEvent) => {      const target = e.target as Node;      if (latest.current.refs.some((r) => r.current?.contains(target))) return;      latest.current.onDismiss("outside");    };    document.addEventListener("keydown", onKey);    document.addEventListener("pointerdown", onDown, true);    return () => {      document.removeEventListener("keydown", onKey);      document.removeEventListener("pointerdown", onDown, true);    };  }, [open]);}/** The entry pose for a surface on `side`: it comes 6px from the anchor, 0.96 and blurred. */export function enterStyle(shown: boolean, side: Side, reduced: boolean, ease = "cubic-bezier(0.16,1,0.3,1)"): React.CSSProperties {  const d = 6;  const shift = side === "top" ? `0 ${d}px` : side === "bottom" ? `0 -${d}px` : side === "left" ? `${d}px 0` : `-${d}px 0`;  return {    opacity: shown ? 1 : 0,    translate: shown || reduced ? "0 0" : shift,    scale: shown || reduced ? "1" : "0.96",    filter: shown || reduced ? "blur(0px)" : "blur(4px)",    transition: reduced      ? "opacity 120ms ease-out"      : shown        ? `opacity 220ms ${ease}, translate 320ms ${ease}, scale 320ms ${ease}, filter 220ms ${ease}`        : `opacity 140ms ${ease}, translate 180ms ${ease}, scale 180ms ${ease}, filter 140ms ${ease}`,  };}

"use client";import * as React from "react";import { EASE_OUT, useInteractionReducedMotion } from "./ui-interaction-motion";/* ───────────────────────────────────────────────────────── * MENU LIST: the rows inside a dropdown or context menu * *   highlight  one fill glides between rows as the pointer or *              arrow keys move; it never blinks off and on *   keys       arrows (wrapping), Home/End, typing a few letters *              jumps to a row, Enter/Space picks *   check      checkbox rows draw their tick in place and keep *              the menu open * ───────────────────────────────────────────────────────── */export type MenuEntry =  | { type?: "item"; id: string; label: string; icon?: React.ReactNode; shortcut?: string; destructive?: boolean; disabled?: boolean; onSelect?: () => void }  | { type: "checkbox"; id: string; label: string; icon?: React.ReactNode; checked: boolean; onCheckedChange: (checked: boolean) => void; disabled?: boolean }  | { type: "label"; label: string }  | { type: "separator" };type Row = Extract<MenuEntry, { id: string }>;export interface MenuListProps {  items: MenuEntry[];  /** Called after an item (not a checkbox) is picked. */  onClose: () => void;  /** Focus the first row on mount (keyboard open). */  autoFocus?: "first" | "last" | "none";  label?: string;}function Tick({ on, reduced }: { on: boolean; reduced: boolean }) {  return (    <svg viewBox="0 0 16 16" fill="none" className="size-3.5">      <path        d="M3.5 8.5 6.5 11.5 12.5 4.5"        stroke="currentColor"        strokeWidth="1.8"        strokeLinecap="round"        strokeLinejoin="round"        pathLength={1}        strokeDasharray={1}        style={{ strokeDashoffset: on ? 0 : 1, transition: reduced ? "none" : `stroke-dashoffset ${on ? 280 : 140}ms ${EASE_OUT}` }}      />    </svg>  );}export function MenuList({ items, onClose, autoFocus = "none", label }: MenuListProps) {  const reduced = useInteractionReducedMotion();  const listRef = React.useRef<HTMLDivElement>(null);  const rows = items.filter((i): i is Row => "id" in i && !i.disabled);  const [active, setActive] = React.useState<string | null>(() => (autoFocus === "none" ? null : ((autoFocus === "first" ? rows[0] : rows[rows.length - 1])?.id ?? null)));  const [mark, setMark] = React.useState<{ y: number; h: number } | null>(null);  const [ready, setReady] = React.useState(false);  const typed = React.useRef({ text: "", at: 0 });  const focusRow = (id: string | null) => {    setActive(id);    if (id) listRef.current?.querySelector<HTMLElement>(`[data-menu-row="${CSS.escape(id)}"]`)?.focus({ preventScroll: true });  };  // On mount: focus the starting row (keyboard open) or the list itself.  React.useEffect(() => {    const list = listRef.current;    const row = active ? list?.querySelector<HTMLElement>(`[data-menu-row="${CSS.escape(active)}"]`) : null;    (row ?? list)?.focus({ preventScroll: true });    // eslint-disable-next-line react-hooks/exhaustive-deps  }, []);  React.useLayoutEffect(() => {    const list = listRef.current;    if (!list) return;    const measure = () => {      const el = active ? list.querySelector<HTMLElement>(`[data-menu-row="${CSS.escape(active)}"]`) : null;      setMark((p) => (el ? (p && p.y === el.offsetTop && p.h === el.offsetHeight ? p : { y: el.offsetTop, h: el.offsetHeight }) : null));    };    measure();    const ro = new ResizeObserver(measure);    ro.observe(list);    return () => ro.disconnect();  }, [active]);  React.useEffect(() => {    if (!mark || ready) return;    const frame = requestAnimationFrame(() => setReady(true));    return () => cancelAnimationFrame(frame);  }, [mark, ready]);  const pick = (row: Row) => {    if (row.type === "checkbox") return row.onCheckedChange(!row.checked);    onClose();    row.onSelect?.();  };  const onKeyDown = (e: React.KeyboardEvent) => {    const index = rows.findIndex((r) => r.id === active);    let next: Row | undefined;    if (e.key === "ArrowDown") next = rows[(index + 1) % rows.length];    else if (e.key === "ArrowUp") next = rows[(index - 1 + rows.length) % rows.length];    else if (e.key === "Home") next = rows[0];    else if (e.key === "End") next = rows[rows.length - 1];    else if ((e.key === "Enter" || e.key === " ") && index >= 0) {      e.preventDefault();      return pick(rows[index]);    } else if (e.key === "Tab") return onClose();    else if (e.key.length === 1 && /\S/.test(e.key)) {      const now = e.timeStamp;      typed.current = { text: (now - typed.current.at < 600 ? typed.current.text : "") + e.key.toLowerCase(), at: now };      next = rows.find((r) => r.label.toLowerCase().startsWith(typed.current.text));    }    if (!next) return;    e.preventDefault();    focusRow(next.id);  };  return (    <div ref={listRef} role="menu" aria-label={label} tabIndex={-1} onKeyDown={onKeyDown} onPointerLeave={() => setActive(null)} className="relative flex flex-col p-1 outline-none">      <span        aria-hidden="true"        className="pointer-events-none absolute inset-x-1 top-0 rounded-[10px] bg-accent"        style={{          transform: `translateY(${mark?.y ?? 0}px)`,          height: mark?.h ?? 0,          opacity: mark ? 1 : 0,          transition: reduced || !ready ? "opacity 120ms" : `transform 220ms ${EASE_OUT}, height 220ms ${EASE_OUT}, opacity 160ms ${EASE_OUT}`,        }}      />      {items.map((item, i) => {        if (item.type === "separator") return <div key={`s${i}`} role="separator" className="mx-2 my-1 h-px bg-border" />;        if (item.type === "label") return <div key={`l${i}`} className="px-2.5 pb-1 pt-2 text-[11.5px] font-medium text-muted-foreground">{item.label}</div>;        const row = item as Row;        const check = row.type === "checkbox";        const destructive = !check && "destructive" in row && row.destructive;        return (          <div            key={row.id}            data-menu-row={row.id}            role={check ? "menuitemcheckbox" : "menuitem"}            aria-checked={check ? row.checked : undefined}            aria-disabled={row.disabled || undefined}            tabIndex={-1}            onPointerMove={() => !row.disabled && active !== row.id && focusRow(row.id)}            onClick={() => !row.disabled && pick(row)}            className={`relative flex h-8 select-none items-center gap-2.5 rounded-[10px] px-2.5 text-[13px] outline-none ${              row.disabled ? "cursor-default opacity-40" : "cursor-pointer"            } ${destructive ? "text-red-600 dark:text-red-400" : active === row.id ? "text-foreground" : "text-foreground/85"}`}          >            {check ? (              <span className="flex size-4 items-center justify-center text-foreground">                <Tick on={row.checked} reduced={reduced} />              </span>            ) : (              row.icon && <span className={`flex size-4 items-center justify-center [&_svg]:size-3.5 ${destructive ? "" : "text-muted-foreground"}`}>{row.icon}</span>            )}            <span className="flex-1 truncate">{row.label}</span>            {!check && "shortcut" in row && row.shortcut && <kbd className="font-mono text-[11px] text-muted-foreground">{row.shortcut}</kbd>}          </div>        );      })}    </div>  );}export default MenuList;