05Click-to-sort header

<main class="stage">
  <table class="sort-table is-demo">
    <caption class="sort-table__caption">Participant scores</caption>
    <thead>
      <tr>
        <th><button class="sort-table__th" type="button" data-key="name" aria-sort="none">Name<span class="sort-table__arrow" aria-hidden="true">▾</span></button></th>
        <th><button class="sort-table__th" type="button" data-key="score" aria-sort="descending">Score<span class="sort-table__arrow" aria-hidden="true">▾</span></button></th>
      </tr>
    </thead>
    <tbody>
      <tr><td>Do-yoon</td><td data-score="92">92</td></tr>
      <tr><td>Seo-yeon</td><td data-score="88">88</td></tr>
      <tr><td>Min-jun</td><td data-score="76">76</td></tr>
    </tbody>
  </table>
</main>

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

$duration: $dur-quick;                                 // 화살표가 뒤집히는 시간
$easing: $ease-out;
$color: $subject-blue;                                 // 정렬 중인 열 강조 색

@include stage($stage-ink);

.sort-table {
  position: relative;
  width: min(240px, 78vw);
  border-collapse: separate;
  border-spacing: 0;
  border-radius: $r-card;
  overflow: hidden;
  background: $stage-paper;
  font-size: 13px;
}
.sort-table__caption {
  position: absolute;
  width: 1px; height: 1px;
  overflow: hidden;
  clip-path: inset(50%);
}

.sort-table th, .sort-table td {
  padding: $sp-2 $sp-3;
  text-align: left;
}
.sort-table thead th { background: rgba($subject-blue, .1); }
// tbody 행에도 불투명 배경을 줘야 한다 — 안 주면 정렬 데모 루프에서 두 행이 translateY 로 겹칠 때
// 배경이 없는 행 뒤로 다른 행 글자가 그대로 비쳐 보인다 (실측으로 확인)
.sort-table tbody td { background: $stage-paper; }
.sort-table tbody tr:not(:last-child) td { border-bottom: 1px solid rgba(23, 20, 26, .08); }

.sort-table__th {
  display: flex;
  align-items: center;
  gap: $sp-1;
  width: 100%;
  border: 0;
  background: none;
  padding: 0;
  font-family: inherit;
  font-size: inherit;
  font-weight: 700;
  color: $stage-ink;
  cursor: pointer;
}
.sort-table__th:focus-visible { outline: 2px solid $color; outline-offset: 2px; }
.sort-table__th[aria-sort="none"] .sort-table__arrow { opacity: .35; transform: rotate(0deg); }
.sort-table__th[aria-sort="descending"] .sort-table__arrow { opacity: 1; transform: rotate(0deg); color: $subject-blue-deep; }   // 연파랑 헤더 위 파랑 3.96:1 → deep 5.29:1
.sort-table__th[aria-sort="ascending"] .sort-table__arrow { opacity: 1; transform: rotate(180deg); color: $subject-blue-deep; }
.sort-table__arrow { display: inline-block; font-size: 10px; transition: transform $duration $easing, opacity $duration $easing; }

.sort-table.is-demo tbody tr:nth-child(1) { animation: sort-row-a $dur-loop $easing infinite; }
.sort-table.is-demo tbody tr:nth-child(2) { animation: sort-row-b $dur-loop $easing infinite; }
.sort-table.is-demo [data-key="score"] .sort-table__arrow { animation: sort-arrow-loop $dur-loop $easing infinite; }

@keyframes sort-row-a {
  0%, 10%   { transform: translateY(0); }
  45%, 65%  { transform: translateY(37px); }
  95%, 100% { transform: translateY(0); }
}
@keyframes sort-row-b {
  0%, 10%   { transform: translateY(0); }
  45%, 65%  { transform: translateY(-37px); }
  95%, 100% { transform: translateY(0); }
}
@keyframes sort-arrow-loop {
  0%, 10%   { transform: rotate(0deg); }
  50%, 60%  { transform: rotate(180deg); }
  95%, 100% { transform: rotate(0deg); }
}

@media (prefers-reduced-motion: reduce) {
  .sort-table__arrow { transition: none; }
  .sort-table.is-demo tbody tr:nth-child(1),
  .sort-table.is-demo tbody tr:nth-child(2),
  .sort-table.is-demo [data-key="score"] .sort-table__arrow { animation: 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);
}

.sort-table {
  position: relative;
  width: min(240px, 78vw);
  border-collapse: separate;
  border-spacing: 0;
  border-radius: 16px;
  overflow: hidden;
  background: #ffffff;
  font-size: 13px;
}

.sort-table__caption {
  position: absolute;
  width: 1px;
  height: 1px;
  overflow: hidden;
  clip-path: inset(50%);
}

.sort-table th, .sort-table td {
  padding: 8px 12px;
  text-align: left;
}

.sort-table thead th {
  background: rgba(47, 109, 246, 0.1);
}

.sort-table tbody td {
  background: #ffffff;
}

.sort-table tbody tr:not(:last-child) td {
  border-bottom: 1px solid rgba(23, 20, 26, 0.08);
}

.sort-table__th {
  display: flex;
  align-items: center;
  gap: 4px;
  width: 100%;
  border: 0;
  background: none;
  padding: 0;
  font-family: inherit;
  font-size: inherit;
  font-weight: 700;
  color: #17141a;
  cursor: pointer;
}

.sort-table__th:focus-visible {
  outline: 2px solid #2f6df6;
  outline-offset: 2px;
}

.sort-table__th[aria-sort=none] .sort-table__arrow {
  opacity: 0.35;
  transform: rotate(0deg);
}

.sort-table__th[aria-sort=descending] .sort-table__arrow {
  opacity: 1;
  transform: rotate(0deg);
  color: #0a4fe8;
}

.sort-table__th[aria-sort=ascending] .sort-table__arrow {
  opacity: 1;
  transform: rotate(180deg);
  color: #0a4fe8;
}

.sort-table__arrow {
  display: inline-block;
  font-size: 10px;
  transition: transform 220ms ease-out, opacity 220ms ease-out;
}

.sort-table.is-demo tbody tr:nth-child(1) {
  animation: sort-row-a 2s ease-out infinite;
}

.sort-table.is-demo tbody tr:nth-child(2) {
  animation: sort-row-b 2s ease-out infinite;
}

.sort-table.is-demo [data-key=score] .sort-table__arrow {
  animation: sort-arrow-loop 2s ease-out infinite;
}

@keyframes sort-row-a {
  0%, 10% {
    transform: translateY(0);
  }
  45%, 65% {
    transform: translateY(37px);
  }
  95%, 100% {
    transform: translateY(0);
  }
}
@keyframes sort-row-b {
  0%, 10% {
    transform: translateY(0);
  }
  45%, 65% {
    transform: translateY(-37px);
  }
  95%, 100% {
    transform: translateY(0);
  }
}
@keyframes sort-arrow-loop {
  0%, 10% {
    transform: rotate(0deg);
  }
  50%, 60% {
    transform: rotate(180deg);
  }
  95%, 100% {
    transform: rotate(0deg);
  }
}
@media (prefers-reduced-motion: reduce) {
  .sort-table__arrow {
    transition: none;
  }
  .sort-table.is-demo tbody tr:nth-child(1),
  .sort-table.is-demo tbody tr:nth-child(2),
  .sort-table.is-demo [data-key=score] .sort-table__arrow {
    animation: none;
  }
}

(function () {
  var table = document.querySelector('.sort-table');
  var tbody = table.querySelector('tbody');
  var ths = table.querySelectorAll('.sort-table__th');
  ths.forEach(function (btn) {
    btn.addEventListener('click', function () {
      table.classList.remove('is-demo');
      var key = btn.dataset.key;
      var dir = btn.getAttribute('aria-sort') === 'ascending' ? 'descending' : 'ascending';
      ths.forEach(function (b) { b.setAttribute('aria-sort', 'none'); });
      btn.setAttribute('aria-sort', dir);
      var rows = Array.prototype.slice.call(tbody.rows);
      rows.sort(function (a, b) {
        var av = key === 'score' ? Number(a.cells[1].dataset.score) : a.cells[0].textContent;
        var bv = key === 'score' ? Number(b.cells[1].dataset.score) : b.cells[0].textContent;
        var cmp = av > bv ? 1 : av < bv ? -1 : 0;
        return dir === 'ascending' ? cmp : -cmp;
      });
      rows.forEach(function (r) { tbody.appendChild(r); });
    });
  });
})();

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

export type Row = { name: string; score: number };

export type SortableHeaderClickProps = {
  rows: Row[];
  /** 화살표가 뒤집히는 시간 (기본 220ms) */
  duration?: number;
  easing?: string;
  /** 정렬 중인 열 강조 색 */
  color?: string;
};

type Vars = CSSProperties & { "--duration"?: string; "--easing"?: string; "--color"?: string };
type Key = "name" | "score";
type Dir = "none" | "ascending" | "descending";

export default function SortableHeaderClick({
  rows,
  duration = 220,
  easing = "ease-out",
  color = "#2f6df6",
}: SortableHeaderClickProps) {
  const [key, setKey] = useState<Key>("score");
  const [dir, setDir] = useState<Dir>("descending");
  const vars: Vars = { "--duration": `${duration}ms`, "--easing": easing, "--color": color };

  const sorted = rows.slice().sort((a, b) => {
    const cmp = a[key] > b[key] ? 1 : a[key] < b[key] ? -1 : 0;
    return dir === "ascending" ? cmp : -cmp;
  });
  const click = (k: Key) => {
    setDir(k === key && dir === "ascending" ? "descending" : "ascending");
    setKey(k);
  };
  const sortOf = (k: Key): Dir => (k === key ? dir : "none");

  return (
    <table className={styles.table} style={vars}>
      <caption className={styles.caption}>참가자 점수</caption>
      <thead>
        <tr>
          <th>
            <button className={styles.th} type="button" aria-sort={sortOf("name")} onClick={() => click("name")}>
              이름<span className={styles.arrow} aria-hidden="true">▾</span>
            </button>
          </th>
          <th>
            <button className={styles.th} type="button" aria-sort={sortOf("score")} onClick={() => click("score")}>
              점수<span className={styles.arrow} aria-hidden="true">▾</span>
            </button>
          </th>
        </tr>
      </thead>
      <tbody>
        {sorted.map((r) => (
          <tr key={r.name}>
            <td>{r.name}</td>
            <td>{r.score}</td>
          </tr>
        ))}
      </tbody>
    </table>
  );
}