07Empty state that still suggests

<main class="stage">
  <div class="pal is-demo" role="dialog" aria-modal="true" aria-label="Command palette">
    <div class="pal__bar">
      <span class="pal__mag" aria-hidden="true"><svg viewBox="0 0 256 256" width="13" height="13"><g fill="currentColor"><path d="M192 112a80 80 0 1 1-80-80a80 80 0 0 1 80 80" opacity=".2"/><path d="m229.66 218.34l-50.06-50.06a88.21 88.21 0 1 0-11.32 11.31l50.06 50.07a8 8 0 0 0 11.32-11.32M40 112a72 72 0 1 1 72 72a72.08 72.08 0 0 1-72-72"/></g></svg></span>
      <input class="pal__input" id="q" type="text" role="combobox" aria-expanded="true" aria-controls="list" aria-label="Search commands" placeholder="Search commands" autocomplete="off">
      <span class="pal__ghost" aria-hidden="true">Monthly report</span>
    </div>
    <div class="pal__box">
      <div class="pal__list" id="list" role="listbox" aria-label="Command palette">
        <div class="pal__opt pal__opt--out" id="o1" role="option" aria-selected="false" tabindex="-1">Create document</div>
        <div class="pal__opt pal__opt--out" id="o2" role="option" aria-selected="false" tabindex="-1">Invite member</div>
        <div class="pal__opt pal__opt--out" id="o3" role="option" aria-selected="false" tabindex="-1">Open settings</div>
        <div class="pal__empty" id="empty" hidden>
          <p class="pal__note">No results</p>
          <div class="pal__opt pal__opt--sug" id="s1" role="option" aria-selected="false" tabindex="-1">
            <span class="pal__ic" aria-hidden="true"><svg viewBox="0 0 256 256" width="13" height="13"><g fill="currentColor"><path d="M224 128a96 96 0 1 1-96-96a96 96 0 0 1 96 96" opacity=".2"/><path d="M128 24a104 104 0 1 0 104 104A104.11 104.11 0 0 0 128 24m0 192a88 88 0 1 1 88-88a88.1 88.1 0 0 1-88 88m48-88a8 8 0 0 1-8 8h-32v32a8 8 0 0 1-16 0v-32H88a8 8 0 0 1 0-16h32V88a8 8 0 0 1 16 0v32h32a8 8 0 0 1 8 8"/></g></svg></span>
            <span class="pal__act">Create new</span><span class="pal__q">Monthly report</span>
          </div>
          <div class="pal__opt pal__opt--sug" id="s2" role="option" aria-selected="false" tabindex="-1">
            <span class="pal__ic" aria-hidden="true"><svg viewBox="0 0 256 256" width="13" height="13"><g fill="currentColor"><path d="M192 112a80 80 0 1 1-80-80a80 80 0 0 1 80 80" opacity=".2"/><path d="m229.66 218.34l-50.06-50.06a88.21 88.21 0 1 0-11.32 11.31l50.06 50.07a8 8 0 0 0 11.32-11.32M40 112a72 72 0 1 1 72 72a72.08 72.08 0 0 1-72-72"/></g></svg></span>
            <span class="pal__act">Search all</span><span class="pal__q">Monthly report</span>
          </div>
        </div>
      </div>
    </div>
  </div>
</main>

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

$duration: $dur-quick;
$easing: $ease-spring;
$color: $subject-blue;

@include stage($stage-orange);

.pal {
  box-sizing: border-box;
  width: min(264px, 88vw);
  padding: $sp-2;
  background: #fff;
  border-radius: $r-card;
  box-shadow: $shadow-raised;
  font-family: -apple-system, "Segoe UI", "Noto Sans KR", sans-serif;
  color: $subject-ink;
}

.pal__bar {
  position: relative;
  box-sizing: border-box;
  height: 30px;
  display: flex; align-items: center; gap: $sp-2;
  padding: 0 $sp-2;
  border-radius: $r-sm;
  background: rgba(23, 20, 26, .05);
}
.pal__mag { display: inline-flex; color: rgba(23, 20, 26, .42); }
.pal__input {
  flex: 1 1 auto;
  min-width: 0;
  border: 0; background: transparent;
  font-family: inherit;
  font-size: 12px; font-weight: 600;
  color: $subject-ink;
}
.pal__input:focus-visible { outline: 2px solid $color; outline-offset: 2px; border-radius: $r-xs; }
// 자동 루프는 친 글자를 고스트로 겹쳐 보여주므로, 루프 동안에는 placeholder 를 비운다 (두 글자가 겹쳐 읽혔다)
.pal.is-demo .pal__input::placeholder { color: transparent; }
.pal__ghost {
  position: absolute;
  left: 32px; top: 50%;
  transform: translateY(-50%);
  font-size: 12px; font-weight: 700;
  color: $subject-ink;
  opacity: 0;
  pointer-events: none;
}

.pal__box {
  box-sizing: border-box;
  height: 96px;
  margin: $sp-2 0 0;
  overflow: hidden;
}
.pal__list { position: relative; }
.pal__opt {
  box-sizing: border-box;
  height: 24px;
  display: flex; align-items: center; gap: $sp-2;
  padding: 0 $sp-2;
  border-radius: $r-sm;
  font-size: 12px; font-weight: 600;
  color: rgba(23, 20, 26, .82);
  white-space: nowrap;
  cursor: pointer;
}
.pal__opt.is-at { background: rgba(47, 109, 246, .12); }
.pal__ic { display: inline-flex; color: $color; }
.pal__name { overflow: hidden; text-overflow: ellipsis; }
.pal__act { flex: 0 0 auto; }
.pal__q {
  overflow: hidden;
  font-weight: 800;
  color: $color;
  text-overflow: ellipsis;
}
.pal__empty { position: absolute; left: 0; top: 0; width: 100%; }
.pal.is-demo .pal__empty[hidden] { display: block; }
.pal__note {
  margin: 0 0 $sp-1;
  padding: 0 $sp-2;
  height: 20px;
  display: flex; align-items: center;
  font-size: 10px; font-weight: 700;
  color: rgba(23, 20, 26, .4);
}

// ── 자동 루프: 맞는 줄이 없어지는 순간 안내 한 줄과 제안 두 줄이 같은 자리로 올라온다 ──
// 사라지는 줄과 올라오는 줄이 겹치지 않도록 사라짐·나타남은 steps(1) 로 끊고, 제안만 미끄러져 올라온다
.pal.is-demo .pal__ghost { animation: cut-in $dur-loop steps(1, end) infinite; }
.pal.is-demo .pal__opt--out { animation: cut-out $dur-loop steps(1, end) infinite; }
.pal.is-demo .pal__empty { animation: cut-in $dur-loop steps(1, end) infinite; }
.pal.is-demo .pal__opt--sug { animation: rise $dur-loop $easing infinite; }
.pal.is-demo #s2 { animation-delay: 70ms; }
@keyframes cut-in {
  0%, 17%   { opacity: 0; }
  18%, 82%  { opacity: 1; }
  83%, 100% { opacity: 0; }
}
@keyframes cut-out {
  0%, 17%   { opacity: 1; }
  18%, 82%  { opacity: 0; }
  83%, 100% { opacity: 1; }
}
@keyframes rise {
  0%, 18%   { transform: translateY(20px); }
  40%, 62%  { transform: translateY(0); }
  83%, 100% { transform: translateY(20px); }
}

@media (prefers-reduced-motion: reduce) {
  .pal.is-demo .pal__ghost,
  .pal.is-demo .pal__opt--out,
  .pal.is-demo .pal__empty,
  .pal.is-demo .pal__opt--sug { animation: none !important; }
  .pal.is-demo .pal__empty[hidden] { display: none; }
  .pal__ghost { opacity: 0; }
}

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

.stage {
  box-sizing: border-box;
  min-height: 100vh;
  display: grid;
  place-items: center;
  margin: 0;
  background: #ff4d1f;
  font-family: -apple-system, "Segoe UI", "Noto Sans KR", sans-serif;
  padding: clamp(8px, 4vw, 24px);
}

.pal {
  box-sizing: border-box;
  width: min(264px, 88vw);
  padding: 8px;
  background: #fff;
  border-radius: 16px;
  box-shadow: 0 14px 24px rgba(23, 20, 26, 0.32);
  font-family: -apple-system, "Segoe UI", "Noto Sans KR", sans-serif;
  color: #17141a;
}

.pal__bar {
  position: relative;
  box-sizing: border-box;
  height: 30px;
  display: flex;
  align-items: center;
  gap: 8px;
  padding: 0 8px;
  border-radius: 8px;
  background: rgba(23, 20, 26, 0.05);
}

.pal__mag {
  display: inline-flex;
  color: rgba(23, 20, 26, 0.42);
}

.pal__input {
  flex: 1 1 auto;
  min-width: 0;
  border: 0;
  background: transparent;
  font-family: inherit;
  font-size: 12px;
  font-weight: 600;
  color: #17141a;
}

.pal__input:focus-visible {
  outline: 2px solid #2f6df6;
  outline-offset: 2px;
  border-radius: 4px;
}

.pal.is-demo .pal__input::placeholder {
  color: transparent;
}

.pal__ghost {
  position: absolute;
  left: 32px;
  top: 50%;
  transform: translateY(-50%);
  font-size: 12px;
  font-weight: 700;
  color: #17141a;
  opacity: 0;
  pointer-events: none;
}

.pal__box {
  box-sizing: border-box;
  height: 96px;
  margin: 8px 0 0;
  overflow: hidden;
}

.pal__list {
  position: relative;
}

.pal__opt {
  box-sizing: border-box;
  height: 24px;
  display: flex;
  align-items: center;
  gap: 8px;
  padding: 0 8px;
  border-radius: 8px;
  font-size: 12px;
  font-weight: 600;
  color: rgba(23, 20, 26, 0.82);
  white-space: nowrap;
  cursor: pointer;
}

.pal__opt.is-at {
  background: rgba(47, 109, 246, 0.12);
}

.pal__ic {
  display: inline-flex;
  color: #2f6df6;
}

.pal__name {
  overflow: hidden;
  text-overflow: ellipsis;
}

.pal__act {
  flex: 0 0 auto;
}

.pal__q {
  overflow: hidden;
  font-weight: 800;
  color: #2f6df6;
  text-overflow: ellipsis;
}

.pal__empty {
  position: absolute;
  left: 0;
  top: 0;
  width: 100%;
}

.pal.is-demo .pal__empty[hidden] {
  display: block;
}

.pal__note {
  margin: 0 0 4px;
  padding: 0 8px;
  height: 20px;
  display: flex;
  align-items: center;
  font-size: 10px;
  font-weight: 700;
  color: rgba(23, 20, 26, 0.4);
}

.pal.is-demo .pal__ghost {
  animation: cut-in 2s steps(1, end) infinite;
}

.pal.is-demo .pal__opt--out {
  animation: cut-out 2s steps(1, end) infinite;
}

.pal.is-demo .pal__empty {
  animation: cut-in 2s steps(1, end) infinite;
}

.pal.is-demo .pal__opt--sug {
  animation: rise 2s cubic-bezier(0.2, 0.8, 0.2, 1) infinite;
}

.pal.is-demo #s2 {
  animation-delay: 70ms;
}

@keyframes cut-in {
  0%, 17% {
    opacity: 0;
  }
  18%, 82% {
    opacity: 1;
  }
  83%, 100% {
    opacity: 0;
  }
}
@keyframes cut-out {
  0%, 17% {
    opacity: 1;
  }
  18%, 82% {
    opacity: 0;
  }
  83%, 100% {
    opacity: 1;
  }
}
@keyframes rise {
  0%, 18% {
    transform: translateY(20px);
  }
  40%, 62% {
    transform: translateY(0);
  }
  83%, 100% {
    transform: translateY(20px);
  }
}
@media (prefers-reduced-motion: reduce) {
  .pal.is-demo .pal__ghost,
  .pal.is-demo .pal__opt--out,
  .pal.is-demo .pal__empty,
  .pal.is-demo .pal__opt--sug {
    animation: none !important;
  }
  .pal.is-demo .pal__empty[hidden] {
    display: none;
  }
  .pal__ghost {
    opacity: 0;
  }
}

// 실제 동작: 맞는 줄이 하나도 없으면 안내만 남기지 않고, 친 글자를 그대로 담은 실행 가능한 줄 두 개를 대신 올린다.
var pal = document.querySelector('.pal');
var input = document.getElementById('q');
var empty = document.getElementById('empty');
var rows = [].slice.call(document.querySelectorAll('.pal__opt--out'));
var sugs = [].slice.call(document.querySelectorAll('.pal__opt--sug'));
var names = rows.map(function (o) { return o.textContent.trim(); });
var at = -1;

function render(q) {
  pal.classList.remove('is-demo');
  var shown = 0;
  rows.forEach(function (o, i) {
    var hit = !q || names[i].indexOf(q) >= 0;
    o.hidden = !hit;
    if (hit) shown++;
  });
  empty.hidden = !(q && shown === 0);
  // 제안 줄에 방금 친 글자를 그대로 넣는다 — "그 이름으로" 가 이 상태의 값이다
  document.querySelectorAll('.pal__q').forEach(function (s) { s.textContent = q; });
  at = -1;
}
function live() { return sugs.filter(function (o) { return !empty.hidden; }).concat(rows.filter(function (o) { return !o.hidden; })); }
input.addEventListener('input', function () { render(input.value.trim()); });
document.addEventListener('keydown', function (e) {
  var vis = live();
  if (e.key === 'ArrowDown' || e.key === 'ArrowUp') {
    pal.classList.remove('is-demo');
    at = Math.max(0, Math.min(at + (e.key === 'ArrowDown' ? 1 : -1), vis.length - 1));
    vis.forEach(function (o, i) { o.classList.toggle('is-at', i === at); });
    if (vis[at]) input.setAttribute('aria-activedescendant', vis[at].id);
    e.preventDefault();
  } else if (e.key === 'Enter' && vis[at]) {
    vis.forEach(function (o) { o.setAttribute('aria-selected', String(o === vis[at])); });
    e.preventDefault();
  } else if (e.key === 'Escape') {
    input.value = ''; render(''); input.focus({ preventScroll: true });
  }
});

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

export type EmptySuggestPaletteProps = {
  placeholder?: string;
  options?: string[];
  emptyText?: string;
  suggestions?: string[];
  duration?: number;
  easing?: string;
  color?: string;
};

type Vars = CSSProperties & { "--duration"?: string; "--easing"?: string; "--color"?: string };
type KeyEvt = { key: string; preventDefault: () => void };
type ChangeEvt = { target: { value: string } };

export default function EmptySuggestPalette({
  placeholder = "Search commands",
  options = ["Create document", "Invite member", "Open settings"],
  emptyText = "No results",
  suggestions = ["Create new", "Search all"],
  duration = 220,
  easing = "cubic-bezier(.2,.8,.2,1)",
  color = "#2f6df6",
}: EmptySuggestPaletteProps) {
  const [query, setQuery] = useState("");
  const [at, setAt] = useState(-1);
  const [picked, setPicked] = useState<string | null>(null);
  const inputRef = useRef<HTMLInputElement>(null);
  const vars: Vars = { "--duration": `${duration}ms`, "--easing": easing, "--color": color };

  const q = query.trim();
  const hits = options.filter((o) => !q || o.toLowerCase().includes(q.toLowerCase()));
  // 빗나간 검색은 안내 한 줄로 끝내지 않는다 — 친 글자를 그대로 담은 실행 가능한 줄을 대신 세운다
  const empty = q.length > 0 && hits.length === 0;
  const rows = empty ? suggestions : hits;

  return (
    <div className={styles.pal} style={vars} role="dialog" aria-modal="true" aria-label="Command palette">
      <div className={styles.bar}>
        <span className={styles.mag} aria-hidden="true">
          <svg viewBox="0 0 256 256" width="13" height="13">
            <g fill="currentColor">
              <path d="M192 112a80 80 0 1 1-80-80a80 80 0 0 1 80 80" opacity=".2" />
              <path d="m229.66 218.34l-50.06-50.06a88.21 88.21 0 1 0-11.32 11.31l50.06 50.07a8 8 0 0 0 11.32-11.32M40 112a72 72 0 1 1 72 72a72.08 72.08 0 0 1-72-72" />
            </g>
          </svg>
        </span>
        <input
          ref={inputRef}
          className={styles.input}
          type="text"
          role="combobox"
          aria-expanded="true"
          aria-controls="es-list"
          aria-activedescendant={at >= 0 ? `es-o${at}` : undefined}
          aria-label={placeholder}
          placeholder={placeholder}
          autoComplete="off"
          value={query}
          onChange={(e: ChangeEvt) => { setQuery(e.target.value); setAt(-1); }}
          onKeyDown={(e: KeyEvt) => {
            if (e.key === "ArrowDown" || e.key === "ArrowUp") {
              e.preventDefault();
              setAt((a) => Math.max(0, Math.min(a + (e.key === "ArrowDown" ? 1 : -1), rows.length - 1)));
            } else if (e.key === "Enter" && at >= 0) {
              e.preventDefault();
              setPicked(rows[at]);
            } else if (e.key === "Escape") {
              setQuery(""); setAt(-1);
              inputRef.current?.focus({ preventScroll: true });
            }
          }}
        />
      </div>
      <div className={styles.box}>
        {empty ? <p className={styles.note}>{emptyText}</p> : null}
        <div className={styles.list} id="es-list" role="listbox" aria-label="Command palette">
          {rows.map((label, i) => (
            <div
              key={label}
              id={`es-o${i}`}
              className={`${styles.opt} ${empty ? styles.isSug : ""} ${i === at ? styles.isAt : ""}`}
              role="option"
              aria-selected={label === picked}
              tabIndex={-1}
              onMouseMove={() => setAt(i)}
              onClick={() => setPicked(label)}
            >
              {empty ? (
                <>
                  <span className={styles.ic} aria-hidden="true">
                    <svg viewBox="0 0 256 256" width="13" height="13">
                      <g fill="currentColor">
                        <path d="M224 128a96 96 0 1 1-96-96a96 96 0 0 1 96 96" opacity=".2" />
                        <path d="M128 24a104 104 0 1 0 104 104A104.11 104.11 0 0 0 128 24m0 192a88 88 0 1 1 88-88a88.1 88.1 0 0 1-88 88m48-88a8 8 0 0 1-8 8h-32v32a8 8 0 0 1-16 0v-32H88a8 8 0 0 1 0-16h32V88a8 8 0 0 1 16 0v32h32a8 8 0 0 1 8 8" />
                      </g>
                    </svg>
                  </span>
                  <span className={styles.act}>{label}</span>
                  <span className={styles.q}>{q}</span>
                </>
              ) : label}
            </div>
          ))}
        </div>
      </div>
    </div>
  );
}