<!DOCTYPE html>
<html lang="zh-CN">
<head>
<meta charset="UTF-8">
<meta name="viewport" content="width=device-width, initial-scale=1.0">
<title>Kole UI · Select (H5)</title>
<link rel="stylesheet" href="../.design_library/kole-ui/colors_and_type.css">
<style>
  /* 对齐 components.css 与 select.json 契约（触发器样式同 Input） */
  .demo { padding: 24px; background: var(--kole-color-page-bg); color: var(--kole-color-text-body); font-family: var(--font-family); }
  h1 { font-size: 20px; margin: 0 0 4px; }
  .sub { color: var(--kole-color-text-secondary); margin: 0 0 24px; font-size: 12px; }
  .group { margin-bottom: 24px; }
  .group h2 { font-size: 16px; margin: 0 0 12px; color: var(--kole-color-text-title); }
  .row { display: flex; flex-wrap: wrap; gap: 16px; align-items: flex-start; }

  .kole-select { position: relative; display: inline-block; min-width: 220px; }
  .kole-select-trigger {
    display: flex; align-items: center; gap: 8px; min-height: 32px; height: auto;
    padding: 2px 28px 2px 12px; background: var(--kole-color-card-bg); border: 1px solid var(--kole-color-border);
    border-radius: 4px; box-sizing: border-box; cursor: pointer; transition: border-color .15s, box-shadow .15s;
    font-size: 14px; color: var(--kole-color-text-body); flex-wrap: wrap;
  }
  .kole-select-trigger:hover { border-color: var(--kole-color-brand); }
  .kole-select.is-open .kole-select-trigger { border-color: var(--kole-color-brand); box-shadow: 0 0 0 2px rgba(47,84,235,0.2); }
  .kole-select.is-disabled .kole-select-trigger { background: var(--kole-color-disabled-bg); border-color: transparent; color: var(--kole-color-text-disabled); cursor: not-allowed; }
  .kole-select-trigger .placeholder { color: var(--kole-color-text-placeholder); }
  .kole-select-trigger .caret { position: absolute; right: 10px; top: 50%; transform: translateY(-50%); transition: transform .15s; color: var(--kole-color-text-secondary); pointer-events: none; }
  .kole-select.is-open .caret { transform: translateY(-50%) rotate(180deg); }
  .kole-select-trigger .tag {
    display: inline-flex; align-items: center; gap: 4px; background: var(--kole-color-brand-bg); color: var(--kole-color-brand);
    border-radius: 2px; padding: 1px 6px; font-size: 12px; line-height: 20px;
  }
  .kole-select-trigger .tag .x { cursor: pointer; }

  .kole-select-panel {
    position: absolute; z-index: 10; top: calc(100% + 4px); left: 0; right: 0;
    background: var(--kole-color-card-bg); border-radius: 4px; box-shadow: 0 4px 16px rgba(0,0,0,0.12);
    max-height: 256px; overflow-y: auto; padding: 4px 0;
  }
  .kole-select-search { padding: 6px 8px; border-bottom: 1px solid var(--kole-color-border-strong); }
  .kole-select-search input { width: 100%; box-sizing: border-box; border: 1px solid var(--kole-color-border); border-radius: 4px; padding: 4px 8px; font-size: 13px; outline: none; }
  .kole-select-search input:focus { border-color: var(--kole-color-brand); }
  .kole-select-group-label { padding: 6px 12px; font-size: 12px; color: var(--kole-color-text-secondary); }
  .kole-select-option {
    display: flex; align-items: center; gap: 8px; padding: 0 12px; height: 32px; cursor: pointer;
    font-size: 14px; color: var(--kole-color-text-body); box-sizing: border-box;
  }
  .kole-select-option:hover { background: var(--kole-color-page-bg); }
  .kole-select-option.is-selected { background: var(--kole-color-brand-bg); color: var(--kole-color-brand); }
  .kole-select-option .check { visibility: hidden; margin-left: auto; }
  .kole-select-option.is-selected .check { visibility: visible; }
  .kole-select-option.is-disabled { color: var(--kole-color-text-disabled); cursor: not-allowed; }
  .kole-select-empty { padding: 16px 12px; text-align: center; color: var(--kole-color-text-placeholder); font-size: 13px; }
</style>
</head>
<body>
<div class="demo">
  <h1>Kole UI · Select 组件（纯 H5）</h1>
  <p class="sub">对齐 select.json 契约：触发器同 Input，面板圆角4px / 阴影中 / 最大高度256px，选中项品牌色 + 勾选图标</p>

  <div class="group">
    <h2>1. 单选</h2>
    <div class="row">
      <div class="kole-select" data-select data-mode="single" data-name="city">
        <div class="kole-select-trigger" role="button" aria-haspopup="listbox" aria-expanded="false" tabindex="0" data-behavior="click-toggles-class:.kole-select|is-open"><span class="placeholder">请选择城市</span><span class="caret">▾</span></div>
        <div class="kole-select-panel" hidden>
          <div class="kole-select-option is-selected" role="option" aria-selected="true" data-value="bj">北京<span class="check">✓</span></div>
          <div class="kole-select-option" role="option" data-value="sh">上海<span class="check">✓</span></div>
          <div class="kole-select-option" role="option" data-value="gz">广州<span class="check">✓</span></div>
          <div class="kole-select-option" role="option" data-value="sz">深圳<span class="check">✓</span></div>
        </div>
      </div>
    </div>
  </div>

  <div class="group">
    <h2>2. 多选</h2>
    <div class="row">
      <div class="kole-select" data-select data-mode="multiple" data-name="role">
        <div class="kole-select-trigger" role="button" aria-haspopup="listbox" aria-expanded="false" tabindex="0"><span class="placeholder">请选择角色</span><span class="caret">▾</span></div>
        <div class="kole-select-panel" hidden>
          <div class="kole-select-option is-selected" role="option" aria-selected="true" data-value="admin">管理员<span class="check">✓</span></div>
          <div class="kole-select-option" role="option" data-value="editor">编辑<span class="check">✓</span></div>
          <div class="kole-select-option" role="option" data-value="viewer">访客<span class="check">✓</span></div>
          <div class="kole-select-option is-disabled" role="option" aria-disabled="true" data-value="guest" data-disabled="1">受限访客<span class="check">✓</span></div>
        </div>
      </div>
    </div>
  </div>

  <div class="group">
    <h2>3. 可搜索</h2>
    <div class="row">
      <div class="kole-select" data-select data-mode="single" data-searchable="1" data-name="user">
        <div class="kole-select-trigger" role="button" aria-haspopup="listbox" aria-expanded="false" tabindex="0"><span class="placeholder">搜索并选择用户</span><span class="caret">▾</span></div>
        <div class="kole-select-panel" hidden>
          <div class="kole-select-search"><input placeholder="输入关键字"></div>
          <div class="kole-select-option is-selected" role="option" aria-selected="true" data-value="u1">张伟<span class="check">✓</span></div>
          <div class="kole-select-option" role="option" data-value="u2">李娜<span class="check">✓</span></div>
          <div class="kole-select-option" role="option" data-value="u3">王芳<span class="check">✓</span></div>
          <div class="kole-select-option" role="option" data-value="u4">刘强<span class="check">✓</span></div>
        </div>
      </div>
    </div>
  </div>

  <div class="group">
    <h2>4. 分组</h2>
    <div class="row">
      <div class="kole-select" data-select data-mode="single" data-grouped="1" data-name="dept">
        <div class="kole-select-trigger" role="button" aria-haspopup="listbox" aria-expanded="false" tabindex="0"><span class="placeholder">请选择部门</span><span class="caret">▾</span></div>
        <div class="kole-select-panel" hidden>
          <div class="kole-select-group-label">技术中心</div>
          <div class="kole-select-option" role="option" data-value="fe">前端组<span class="check">✓</span></div>
          <div class="kole-select-option" role="option" data-value="be">后端组<span class="check">✓</span></div>
          <div class="kole-select-group-label">产品中心</div>
          <div class="kole-select-option" role="option" data-value="pm">产品组<span class="check">✓</span></div>
          <div class="kole-select-option" role="option" data-value="ux">设计组<span class="check">✓</span></div>
        </div>
      </div>
    </div>
  </div>

  <div class="group">
    <h2>5. 空态（无匹配选项）</h2>
    <div class="row">
      <div class="kole-select is-open" data-select data-mode="single" data-name="empty">
        <div class="kole-select-trigger" role="button" aria-haspopup="listbox" aria-expanded="true" tabindex="0"><span class="placeholder">搜索无结果</span><span class="caret">▾</span></div>
        <div class="kole-select-panel">
          <div class="kole-select-empty">无匹配选项</div>
        </div>
      </div>
    </div>
  </div>
</div>

<script>
document.querySelectorAll('[data-select]').forEach(root => {
  const trigger = root.querySelector('.kole-select-trigger');
  const panel = root.querySelector('.kole-select-panel');
  const mode = root.dataset.mode;
  const multiple = mode === 'multiple';
  const searchable = root.dataset.searchable === '1';
  const grouped = root.dataset.grouped === '1';
  let selected = multiple ? [] : null; // value | array of value

  function optionLabel(opt) { return opt.textContent.trim(); }

  function renderTrigger() {
    if (multiple) {
      if (!selected.length) { trigger.innerHTML = '<span class="placeholder">请选择角色</span><span class="caret">▾</span>'; return; }
      const tags = selected.map(v => {
        const txt = root.querySelector(`.kole-select-option[data-value="${v}"]`).textContent.trim();
        return `<span class="tag" data-tag="${v}">${txt}<span class="x" data-x="${v}">✕</span></span>`;
      }).join('');
      trigger.innerHTML = tags + '<span class="caret">▾</span>';
    } else {
      if (selected == null) { trigger.innerHTML = '<span class="placeholder">请选择</span><span class="caret">▾</span>'; return; }
      const txt = root.querySelector(`.kole-select-option[data-value="${selected}"]`).textContent.trim();
      trigger.innerHTML = `<span>${txt}</span><span class="caret">▾</span>`;
    }
  }

  function syncSelectedClasses() {
    root.querySelectorAll('.kole-select-option').forEach(o => {
      const v = o.dataset.value;
      const isSel = multiple ? selected.includes(v) : selected === v;
      o.classList.toggle('is-selected', isSel);
    });
  }

  function open() {
    root.classList.add('is-open');
    panel.hidden = false;
    if (searchable) panel.querySelector('.kole-select-search input').focus();
  }
  function close() { root.classList.remove('is-open'); panel.hidden = true; }

  trigger.addEventListener('click', (e) => {
    if (root.classList.contains('is-disabled')) return;
    if (e.target.dataset.x) {
      const v = e.target.dataset.x;
      selected = selected.filter(x => x !== v);
      syncSelectedClasses(); renderTrigger(); return;
    }
    root.classList.contains('is-open') ? close() : open();
  });

  panel.addEventListener('click', (e) => {
    const opt = e.target.closest('.kole-select-option');
    if (!opt || opt.classList.contains('is-disabled')) return;
    const v = opt.dataset.value;
    if (multiple) {
      selected.includes(v) ? selected = selected.filter(x => x !== v) : selected.push(v);
      syncSelectedClasses(); renderTrigger();
    } else {
      selected = v; syncSelectedClasses(); renderTrigger(); close();
    }
  });

  if (searchable) {
    panel.querySelector('.kole-select-search input').addEventListener('input', (e) => {
      const q = e.target.value.trim().toLowerCase();
      root.querySelectorAll('.kole-select-option').forEach(o => {
        o.style.display = o.textContent.toLowerCase().includes(q) ? '' : 'none';
      });
    });
  }

  document.addEventListener('click', (e) => {
    if (!root.contains(e.target)) close();
  });

  renderTrigger();
});
</script>
</body>
</html>
