07Command palette (⌘K)

<main class="stage">
  <div class="cp">
    <button class="cp__trigger" type="button">
      <svg viewBox="0 0 256 256" width="13" height="13"><g fill="currentColor"><path d="M116 40a76 76 0 1 0 76 76a76 76 0 0 0-76-76" opacity=".2"/><path d="m228.24 219.76l-51.38-51.38a92.12 92.12 0 1 0-8.48 8.48l51.38 51.38a6 6 0 0 0 8.48-8.48M36 116a80 80 0 1 1 80 80a80.09 80.09 0 0 1-80-80"/></g></svg>
      Quick jump <kbd class="cp__kbd">Ctrl K</kbd>
    </button>
    <div class="cp__overlay is-demo">
      <div class="cp__backdrop"></div>
      <div class="cp__panel" role="dialog" aria-modal="true" aria-label="Command palette">
        <div class="cp__search-row">
          <svg viewBox="0 0 256 256" width="13" height="13"><g fill="currentColor"><path d="M116 40a76 76 0 1 0 76 76a76 76 0 0 0-76-76" opacity=".2"/><path d="m228.24 219.76l-51.38-51.38a92.12 92.12 0 1 0-8.48 8.48l51.38 51.38a6 6 0 0 0 8.48-8.48M36 116a80 80 0 1 1 80 80a80.09 80.09 0 0 1-80-80"/></g></svg>
          <input class="cp__input" type="text" placeholder="Search commands…" aria-label="Command search">
        </div>
        <ul class="cp__list" role="listbox">
          <li class="cp__item is-active" role="option" tabindex="-1" data-kw="event schedule calendar add">
            <span class="cp__ic"><svg viewBox="0 0 256 256" width="13" height="13"><g fill="currentColor"><path d="M208 32h-24v-8a8 8 0 0 0-16 0v8H88v-8a8 8 0 0 0-16 0v8H48a16 16 0 0 0-16 16v160a16 16 0 0 0 16 16h160a16 16 0 0 0 16-16V48a16 16 0 0 0-16-16m0 176H48V96h160Z"/></g></svg></span>
            Add new event
          </li>
          <li class="cp__item" role="option" tabindex="-1" data-kw="tag label manage">
            <span class="cp__ic"><svg viewBox="0 0 256 256" width="13" height="13"><g fill="currentColor"><path d="M243.31 136L144 36.69A15.86 15.86 0 0 0 132.69 32H40a8 8 0 0 0-8 8v92.69A15.86 15.86 0 0 0 36.69 144L136 243.31a16 16 0 0 0 22.63 0l84.68-84.68a16 16 0 0 0 0-22.63M96 84a12 12 0 1 1 12-12a12 12 0 0 1-12 12"/></g></svg></span>
            Manage tags
          </li>
          <li class="cp__item" role="option" tabindex="-1" data-kw="profile account settings">
            <span class="cp__ic"><svg viewBox="0 0 256 256" width="13" height="13"><g fill="currentColor"><path d="M128 24a104 104 0 1 0 104 104A104.11 104.11 0 0 0 128 24m0 192a87.7 87.7 0 0 1-56.61-20.68a72 72 0 0 1 113.22 0A87.7 87.7 0 0 1 128 216"/></g></svg></span>
            Profile settings
          </li>
          <li class="cp__item" role="option" tabindex="-1" data-kw="export download csv">
            <span class="cp__ic"><svg viewBox="0 0 256 256" width="13" height="13"><g fill="currentColor"><path d="M224 144v64a8 8 0 0 1-8 8H40a8 8 0 0 1-8-8v-64a8 8 0 0 1 16 0v56h160v-56a8 8 0 0 1 16 0M93.66 77.66L120 51.31V144a8 8 0 0 0 16 0V51.31l26.34 26.35a8 8 0 0 0 11.32-11.32l-40-40a8 8 0 0 0-11.32 0l-40 40a8 8 0 0 0 11.32 11.32"/></g></svg></span>
            Export file
          </li>
        </ul>
        <p class="cp__empty" hidden>No matching commands</p>
      </div>
    </div>
  </div>
</main>

@use "../../../../site/static/demo-tokens" as *;

$duration: $dur-quick;
$easing: $ease-pop;
$color: $subject-cream;

@include stage($stage-ink);

.cp { font-family: -apple-system, "Segoe UI", "Noto Sans KR", sans-serif; }
.cp__trigger {
  display: inline-flex; align-items: center; gap: $sp-2;
  box-sizing: border-box;
  border: 1px solid rgba(255, 247, 230, .25);
  background: rgba(255, 247, 230, .06);
  color: $color;
  padding: $sp-2 $sp-3;
  border-radius: $r-control;
  font: inherit; font-size: 12px; font-weight: 600;
  cursor: pointer;
}
.cp__kbd {
  margin-left: $sp-1;
  font: inherit; font-size: 9px; font-weight: 700;
  line-height: 1.6;
  padding: 0 $sp-1;
  border-radius: $r-xs;
  background: rgba(255, 247, 230, .12);
}
.cp__overlay {
  position: fixed; inset: 0;
  display: grid; place-items: center;
  opacity: 0;
  pointer-events: none;
  transition: opacity $duration $easing;
}
.cp__overlay.is-open { opacity: 1; pointer-events: auto; }
.cp__backdrop {
  position: absolute; inset: 0;
  background: rgba(0, 0, 0, .55);
}
.cp__panel {
  position: relative;
  box-sizing: border-box;
  width: min(230px, 82vw);
  background: #232028;
  border-radius: $r-card;
  box-shadow: $shadow-raised;
  padding: $sp-2;
  transform: scale(.92);
  transform-origin: center;
  transition: transform $duration $easing;
}
.cp__overlay.is-open .cp__panel { transform: scale(1); }
.cp__search-row {
  display: flex; align-items: center; gap: $sp-2;
  padding: $sp-1 $sp-2;
  border-bottom: 1px solid rgba(255, 247, 230, .12);
  color: rgba(255, 247, 230, .5);
  margin: 0 0 $sp-1;
}
.cp__input {
  flex: 1 1 auto; min-width: 0;
  border: 0; background: transparent; outline: none;
  color: $color;
  font: inherit; font-size: 12px;
  padding: $sp-1 0;
}
.cp__input::placeholder { color: rgba(255, 247, 230, .4); }
.cp__list { list-style: none; margin: 0; padding: 0; display: flex; flex-direction: column; gap: 0; max-height: 132px; overflow: hidden; }
.cp__item {
  display: flex; align-items: center; gap: $sp-2;
  padding: $sp-2;
  border-radius: $r-xs;
  color: rgba(255, 247, 230, .75);
  font-size: 12px;
  cursor: pointer;
}
.cp__ic { flex: 0 0 auto; color: rgba(255, 247, 230, .5); }
.cp__item.is-active { background: rgba(255, 247, 230, .1); color: $color; }
.cp__item.is-active .cp__ic { color: $color; }
.cp__item[hidden] { display: none; }
.cp__empty { font-size: 11px; color: rgba(255, 247, 230, .5); padding: $sp-2; margin: 0; }

// ── 자동 루프: 팔레트가 열렸다 닫혔다를 반복한다 (실제 상태와 별개) ──────────────
.cp__overlay.is-demo { animation: cp-open 2s $easing infinite; }
.cp__overlay.is-demo .cp__panel { animation: cp-panel 2s $easing infinite; }
@keyframes cp-open {
  0%, 100% { opacity: 0; }
  20%      { opacity: 1; }
  80%      { opacity: 1; }
}
@keyframes cp-panel {
  0%, 100% { transform: scale(.92); }
  20%      { transform: scale(1); }
  80%      { transform: scale(1); }
}

@media (max-width: 340px) {
  .cp__trigger { font-size: 11px; padding: $sp-1 $sp-2; }
  .cp__panel { width: min(210px, 80vw); }
}

@media (prefers-reduced-motion: reduce) {
  .cp__overlay.is-demo, .cp__overlay.is-demo .cp__panel { animation: none !important; }
  .cp__overlay, .cp__panel { transition: none; }
}

html, body {
  margin: 0;
  overflow: hidden;
}

.stage {
  box-sizing: border-box;
  min-height: 100vh;
  display: grid;
  place-items: center;
  margin: 0;
  background: #17141a;
  font-family: -apple-system, "Segoe UI", "Noto Sans KR", sans-serif;
  padding: clamp(8px, 4vw, 24px);
}

.cp {
  font-family: -apple-system, "Segoe UI", "Noto Sans KR", sans-serif;
}

.cp__trigger {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  box-sizing: border-box;
  border: 1px solid rgba(255, 247, 230, 0.25);
  background: rgba(255, 247, 230, 0.06);
  color: #fff7e6;
  padding: 8px 12px;
  border-radius: 12px;
  font: inherit;
  font-size: 12px;
  font-weight: 600;
  cursor: pointer;
}

.cp__kbd {
  margin-left: 4px;
  font: inherit;
  font-size: 9px;
  font-weight: 700;
  line-height: 1.6;
  padding: 0 4px;
  border-radius: 4px;
  background: rgba(255, 247, 230, 0.12);
}

.cp__overlay {
  position: fixed;
  inset: 0;
  display: grid;
  place-items: center;
  opacity: 0;
  pointer-events: none;
  transition: opacity 220ms cubic-bezier(0.2, 1.4, 0.4, 1);
}

.cp__overlay.is-open {
  opacity: 1;
  pointer-events: auto;
}

.cp__backdrop {
  position: absolute;
  inset: 0;
  background: rgba(0, 0, 0, 0.55);
}

.cp__panel {
  position: relative;
  box-sizing: border-box;
  width: min(230px, 82vw);
  background: #232028;
  border-radius: 16px;
  box-shadow: 0 14px 24px rgba(23, 20, 26, 0.32);
  padding: 8px;
  transform: scale(0.92);
  transform-origin: center;
  transition: transform 220ms cubic-bezier(0.2, 1.4, 0.4, 1);
}

.cp__overlay.is-open .cp__panel {
  transform: scale(1);
}

.cp__search-row {
  display: flex;
  align-items: center;
  gap: 8px;
  padding: 4px 8px;
  border-bottom: 1px solid rgba(255, 247, 230, 0.12);
  color: rgba(255, 247, 230, 0.5);
  margin: 0 0 4px;
}

.cp__input {
  flex: 1 1 auto;
  min-width: 0;
  border: 0;
  background: transparent;
  outline: none;
  color: #fff7e6;
  font: inherit;
  font-size: 12px;
  padding: 4px 0;
}

.cp__input::placeholder {
  color: rgba(255, 247, 230, 0.4);
}

.cp__list {
  list-style: none;
  margin: 0;
  padding: 0;
  display: flex;
  flex-direction: column;
  gap: 0;
  max-height: 132px;
  overflow: hidden;
}

.cp__item {
  display: flex;
  align-items: center;
  gap: 8px;
  padding: 8px;
  border-radius: 4px;
  color: rgba(255, 247, 230, 0.75);
  font-size: 12px;
  cursor: pointer;
}

.cp__ic {
  flex: 0 0 auto;
  color: rgba(255, 247, 230, 0.5);
}

.cp__item.is-active {
  background: rgba(255, 247, 230, 0.1);
  color: #fff7e6;
}

.cp__item.is-active .cp__ic {
  color: #fff7e6;
}

.cp__item[hidden] {
  display: none;
}

.cp__empty {
  font-size: 11px;
  color: rgba(255, 247, 230, 0.5);
  padding: 8px;
  margin: 0;
}

.cp__overlay.is-demo {
  animation: cp-open 2s cubic-bezier(0.2, 1.4, 0.4, 1) infinite;
}

.cp__overlay.is-demo .cp__panel {
  animation: cp-panel 2s cubic-bezier(0.2, 1.4, 0.4, 1) infinite;
}

@keyframes cp-open {
  0%, 100% {
    opacity: 0;
  }
  20% {
    opacity: 1;
  }
  80% {
    opacity: 1;
  }
}
@keyframes cp-panel {
  0%, 100% {
    transform: scale(0.92);
  }
  20% {
    transform: scale(1);
  }
  80% {
    transform: scale(1);
  }
}
@media (max-width: 340px) {
  .cp__trigger {
    font-size: 11px;
    padding: 4px 8px;
  }
  .cp__panel {
    width: min(210px, 80vw);
  }
}
@media (prefers-reduced-motion: reduce) {
  .cp__overlay.is-demo, .cp__overlay.is-demo .cp__panel {
    animation: none !important;
  }
  .cp__overlay, .cp__panel {
    transition: none;
  }
}

// 실제 동작: 버튼이나 Ctrl(⌘)+K로 열리고, 입력하면 실제로 그 글자가 든 명령만 남으며, 방향키·Enter로 고른다.
var trigger = document.querySelector('.cp__trigger');
var overlay = document.querySelector('.cp__overlay');
var input = document.querySelector('.cp__input');
var items = document.querySelectorAll('.cp__item');
var empty = document.querySelector('.cp__empty');
var activeIndex = 0;
function visibleItems() { return Array.prototype.filter.call(items, function (it) { return !it.hidden; }); }
function setActive(i, vis) {
  vis = vis || visibleItems();
  items.forEach(function (it) { it.classList.remove('is-active'); });
  if (vis[i]) vis[i].classList.add('is-active');
  activeIndex = i;
}
function filter() {
  var q = input.value.trim().toLowerCase();
  items.forEach(function (it) { it.hidden = q !== '' && it.dataset.kw.toLowerCase().indexOf(q) === -1; });
  var vis = visibleItems();
  empty.hidden = vis.length !== 0;
  setActive(0, vis);
}
function open() {
  overlay.classList.remove('is-demo');
  overlay.classList.add('is-open');
  input.value = '';
  filter();
  input.focus({ preventScroll: true });
}
function close() {
  overlay.classList.remove('is-open');
  trigger.focus({ preventScroll: true });
}
trigger.addEventListener('click', open);
document.addEventListener('keydown', function (e) {
  if ((e.ctrlKey || e.metaKey) && e.key.toLowerCase() === 'k') { e.preventDefault(); open(); }
  else if (e.key === 'Escape' && overlay.classList.contains('is-open')) close();
});
overlay.addEventListener('click', function (e) {
  if (e.target === overlay || e.target.classList.contains('cp__backdrop')) close();
});
input.addEventListener('input', filter);
input.addEventListener('keydown', function (e) {
  var vis = visibleItems();
  if (e.key === 'ArrowDown') { e.preventDefault(); setActive(Math.min(activeIndex + 1, vis.length - 1), vis); }
  else if (e.key === 'ArrowUp') { e.preventDefault(); setActive(Math.max(activeIndex - 1, 0), vis); }
  else if (e.key === 'Enter') { var cur = vis[activeIndex]; if (cur) close(); }
});
items.forEach(function (it) { it.addEventListener('click', close); });

import { useEffect, useRef, useState } from "react";
import type { CSSProperties } from "react";
import styles from "./CommandPalette.module.scss";

export type CommandPaletteProps = {
  duration?: number;
  easing?: string;
  color?: string;
};

type Vars = CSSProperties & { "--duration"?: string; "--easing"?: string; "--color"?: string };

const COMMANDS = [
  { id: "event", label: "Add new event", kw: "event calendar schedule" },
  { id: "tags", label: "Manage tags", kw: "tag label" },
  { id: "profile", label: "Profile settings", kw: "profile account settings" },
  { id: "export", label: "Export file", kw: "export download csv" },
];

export default function CommandPalette({ duration = 220, easing = "cubic-bezier(.2,1.4,.4,1)", color = "#fff7e6" }: CommandPaletteProps) {
  const [open, setOpen] = useState(false);
  const [query, setQuery] = useState("");
  const [active, setActive] = useState(0);
  const inputRef = useRef<HTMLInputElement>(null);
  const triggerRef = useRef<HTMLButtonElement>(null);
  const vars: Vars = { "--duration": `${duration}ms`, "--easing": easing, "--color": color };

  const visible = COMMANDS.filter((c) => !query.trim() || c.kw.includes(query.trim().toLowerCase()));

  function openPalette() {
    setOpen(true); setQuery(""); setActive(0);
    requestAnimationFrame(() => inputRef.current?.focus({ preventScroll: true }));
  }
  function close() {
    setOpen(false);
    triggerRef.current?.focus({ preventScroll: true });
  }

  useEffect(() => {
    function onKey(e: KeyboardEvent) {
      if ((e.ctrlKey || e.metaKey) && e.key.toLowerCase() === "k") { e.preventDefault(); openPalette(); }
      else if (e.key === "Escape" && open) close();
    }
    document.addEventListener("keydown", onKey);
    return () => document.removeEventListener("keydown", onKey);
  });

  return (
    <div className={styles.cp} style={vars}>
      <button ref={triggerRef} type="button" className={styles.trigger} onClick={openPalette}>
        🔍 Quick jump <kbd className={styles.kbd}>Ctrl K</kbd>
      </button>
      {open && (
        <div className={styles.overlay} onClick={(e: any) => { if (e.target === e.currentTarget) close(); }}>
          <div className={styles.panel} role="dialog" aria-modal="true" aria-label="Command palette">
            <div className={styles.searchRow}>
              🔍
              <input
                ref={inputRef}
                className={styles.input}
                type="text"
                placeholder="Search commands…"
                aria-label="Command search"
                value={query}
                onChange={(e: any) => { setQuery(e.target.value); setActive(0); }}
                onKeyDown={(e: any) => {
                  if (e.key === "ArrowDown") { e.preventDefault(); setActive((i) => Math.min(i + 1, visible.length - 1)); }
                  else if (e.key === "ArrowUp") { e.preventDefault(); setActive((i) => Math.max(i - 1, 0)); }
                  else if (e.key === "Enter" && visible[active]) close();
                }}
              />
            </div>
            <ul className={styles.list} role="listbox">
              {visible.map((c, i) => (
                <li key={c.id} className={`${styles.item} ${i === active ? styles.active : ""}`} role="option" onClick={close}>
                  {c.label}
                </li>
              ))}
            </ul>
            {visible.length === 0 && <p className={styles.empty}>No matching commands</p>}
          </div>
        </div>
      )}
    </div>
  );
}