<!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 · EnhancedTabNav</title>
  <link rel="stylesheet" href="../.design_library/kole-ui/colors_and_type.css" />
  <link rel="stylesheet" href="./EnhancedTabNav.css" />
</head>
<body>
  <div class="kole-page">
    <h2 class="kole-h2">EnhancedTabNav 增强页签导航</h2>
    <p class="kole-desc">浏览器标签式导航：可拖拽排序、右键菜单（关闭 / 关闭其他 / 关闭全部），未保存状态显示圆点。</p>

    <div class="kole-demo">
      <div class="kole-tabs-enh" id="tabs">
        <div class="kole-tabs-enh-bar" id="bar"></div>
        <div class="kole-tabs-enh-panel" id="panel"></div>
      </div>
      <p class="kole-tabs-enh-hint">拖拽标签可排序；右键标签打开菜单；带 ● 表示未保存。</p>
    </div>
  </div>

  <script>
    var tabs = [
      { id: 'u', title: '用户管理', dirty: false, desc: '用户列表与权限配置。' },
      { id: 'r', title: '角色管理', dirty: true, desc: '角色权限分配（有未保存修改）。' },
      { id: 'm', title: '菜单管理', dirty: false, desc: '导航菜单树形配置。' },
      { id: 'p', title: '参数配置', dirty: true, desc: '系统参数键值对管理。' },
      { id: 'l', title: '日志查询', dirty: false, desc: '操作日志检索与导出。' }
    ];
    var activeId = 'u';
    var bar = document.getElementById('bar');
    var panel = document.getElementById('panel');
    var menu = null;

    function render() {
      bar.innerHTML = tabs.map(function (t) {
        return '<div class="kole-tabs-enh-tab' + (t.id === activeId ? ' is-active' : '') + '" role="tab" tabindex="0" draggable="true" data-id="' + t.id + '" data-idx="' + tabs.indexOf(t) + '">' +
          (t.dirty ? '<span class="kole-dot"></span>' : '') +
          '<span class="kole-tabs-enh-text">' + t.title + '</span>' +
          '<span class="kole-tabs-enh-close" data-close="' + t.id + '">×</span></div>';
      }).join('');
      var cur = tabs.filter(function (t) { return t.id === activeId; })[0];
      panel.textContent = cur ? cur.title + '：' + cur.desc : '请选择页签';
    }

    bar.addEventListener('click', function (e) {
      var close = e.target.closest('[data-close]');
      if (close) { e.stopPropagation(); closeTab(close.dataset.close); return; }
      var tab = e.target.closest('.kole-tabs-enh-tab');
      if (tab) activeId = tab.dataset.id;
      render();
    });
    bar.addEventListener('contextmenu', function (e) {
      var tab = e.target.closest('.kole-tabs-enh-tab');
      if (!tab) return;
      e.preventDefault();
      showMenu(e.clientX, e.clientY, tab.dataset.id);
    });
    function closeTab(id) {
      if (tabs.length <= 1) return;
      var idx = tabs.findIndex(function (t) { return t.id === id; });
      tabs.splice(idx, 1);
      if (activeId === id) activeId = tabs[Math.max(0, idx - 1)].id;
      render();
    }
    function showMenu(x, y, id) {
      hideMenu();
      menu = document.createElement('div');
      menu.className = 'kole-tabs-enh-menu';
      menu.innerHTML = '<div data-act="close">关闭</div><div data-act="other">关闭其他</div><div data-act="all">关闭全部</div>';
      menu.style.left = x + 'px'; menu.style.top = y + 'px';
      menu.addEventListener('click', function (e) {
        var act = e.target.dataset.act;
        if (act === 'close') closeTab(id);
        else if (act === 'other') tabs = tabs.filter(function (t) { return t.id === id; });
        else if (act === 'all') tabs = [];
        activeId = tabs.length ? id : '';
        render(); hideMenu();
      });
      document.body.appendChild(menu);
    }
    function hideMenu() { if (menu) { menu.remove(); menu = null; } }
    document.addEventListener('click', function (e) { if (menu && !menu.contains(e.target)) hideMenu(); });

    // 拖拽排序
    var dragId = null;
    bar.addEventListener('dragstart', function (e) {
      var tab = e.target.closest('.kole-tabs-enh-tab');
      if (tab) dragId = tab.dataset.id;
    });
    bar.addEventListener('dragover', function (e) { e.preventDefault(); });
    bar.addEventListener('drop', function (e) {
      e.preventDefault();
      var tab = e.target.closest('.kole-tabs-enh-tab');
      if (!tab || !dragId) return;
      var from = tabs.findIndex(function (t) { return t.id === dragId; });
      var to = tabs.findIndex(function (t) { return t.id === tab.dataset.id; });
      if (from < 0 || to < 0 || from === to) return;
      var moved = tabs.splice(from, 1)[0];
      tabs.splice(to, 0, moved);
      render();
    });

    render();
  </script>
</body>
</html>
