MediaWiki:Common.js: Unterschied zwischen den Versionen

/* Das folgende JavaScript wird für alle Benutzer geladen. */
/* ==== Sidebar: klickbare Kopfzeile + Gruppen mit Auf/Zu (Vector-2022, auch im Drawer) ==== */
(function () {
  if (mw.config.get('skin') !== 'vector-2022') return;

  // ---------- helpers ----------
  function extractDirective(a) {
    if (!a) return null;
    var href = a.getAttribute('href') || '';
    try { href = new URL(href, location.href).hash || ''; } catch (e) {}
    var s = (href || '').trim().toLowerCase();
    if (s.indexOf('#group:') >= 0) return { kind: 'group', value: decodeURIComponent(s.split('#group:').pop()) };
    if (s.indexOf('#link:')  >= 0) return { kind: 'link',  value: decodeURIComponent(s.split('#link:').pop())  };
    return null;
  }
  function stripDirectiveHash(a){
    if (!a) return;
    var href = a.getAttribute('href') || '';
    a.setAttribute('href', href.replace(/#(?:link|group):[^#]*$/i,''));
  }
  function hasRealHref(a){
    if (!a) return false;
    var h = a.getAttribute('href') || '';
    // reiner Hash => kein echter Link
    if (/^#/.test(h)) return false;
    return true;
  }

  function makeHead(li, keepLink) {
    var a = li.querySelector(':scope > a');
    var head = document.createElement('div');
    head.className = 'kr-head';
    var btn = document.createElement('button');
    btn.type = 'button';
    btn.className = 'kr-arrow';
    btn.setAttribute('aria-expanded', 'false');         // default: zu
    head.appendChild(btn);

    if (keepLink && a) { stripDirectiveHash(a); head.appendChild(a); }
    else {
      var span = document.createElement('span');
      span.className = 'kr-title';
      span.textContent = (a && a.textContent) || '';
      head.appendChild(span);
      if (a) a.remove();
    }

    li.insertBefore(head, li.firstChild);
    li.classList.add('is-collapsed');                   // default: zu
    return head;
  }

  function attachToggle(containerUL){
    if (containerUL.dataset.krToggleAttached) return;
    containerUL.dataset.krToggleAttached = '1';
    containerUL.addEventListener('click', function (e) {
      if (!e.target.classList.contains('kr-arrow')) return;
      var li = e.target.closest('li.kr-group, li.kr-top');
      if (!li) return;
      var collapsed = li.classList.toggle('is-collapsed');
      e.target.setAttribute('aria-expanded', collapsed ? 'false' : 'true');
    });
  }

  function buildGroups(ul) {
    var lis = Array.from(ul.querySelectorAll(':scope > li.mw-list-item'));
    var current = null;

    lis.forEach(function (li) {
      var a = li.querySelector(':scope > a');
      var d = extractDirective(a);

      if (d && d.kind === 'group') {
        // Gruppe: mit oder ohne Link
        var clickable = hasRealHref(a);
        li.classList.add('kr-group');
        makeHead(li, clickable);
        if (clickable) stripDirectiveHash(a);
        else if (a) a.remove();

        var sub = document.createElement('ul');
        sub.className = 'kr-sub';
        li.appendChild(sub);
        current = sub;
        return;
      }

      // Normale Elemente wandern in die aktuelle Gruppe (falls vorhanden)
      if (current && !(d && (d.kind === 'group' || d.kind === 'link'))) {
        current.appendChild(li);
      }
    });

    attachToggle(ul);
  }

  function buildPortlets(root) {
    var lists = root.querySelectorAll('.vector-menu .vector-menu-content-list');
    lists.forEach(function (ul) {
      if (ul.dataset.krSbDone) return;
      ul.dataset.krSbDone = '1';

      var items = Array.from(ul.querySelectorAll(':scope > li.mw-list-item'));
      var topIdx = items.findIndex(function (li) {
        var a = li.querySelector(':scope > a');
        var d = extractDirective(a);
        return d && d.kind === 'link';
      });

      if (topIdx >= 0) {
        var top = items[topIdx];
        top.classList.add('kr-top');
        makeHead(top, true);                 // klickbarer Titel
        stripDirectiveHash(top.querySelector(':scope > a'));

        var sub = document.createElement('ul');
        sub.className = 'kr-sub';
        top.appendChild(sub);

        for (var i = topIdx + 1; i < items.length; i++) sub.appendChild(items[i]);

        buildGroups(sub);                    // Gruppen in der Unterliste
        attachToggle(ul);                    // Toggle auch für kr-top (Pfeil am Kopf)
      } else {
        buildGroups(ul);
      }

      // Rest säubern
      ul.querySelectorAll('a[href*="#link:"], a[href*="#group:"]').forEach(stripDirectiveHash);
      var portlet = ul.closest('.vector-menu');
      var heading = portlet && portlet.querySelector(':scope > .vector-menu-heading');
      if (heading) heading.remove();
    });
  }

  function processRoot(root){
    if (!root || root.dataset.krSbRootDone) return;
    root.dataset.krSbRootDone = '1';
    root.classList.add('kr-sb');
    buildPortlets(root);
  }

  function init() {
    document.querySelectorAll('#mw-panel, #vector-main-menu, #vector-main-menu-pinned, .vector-drawer')
      .forEach(processRoot);
  }

  init();
  mw.hook('wikipage.content').add(init);
  var mo = new MutationObserver(function (muts) {
    muts.forEach(function (m) {
      m.addedNodes && m.addedNodes.forEach(function (n) {
        if (!(n instanceof Element)) return;
        if (n.matches('#vector-main-menu, #vector-main-menu-pinned, .vector-drawer, #mw-panel')) processRoot(n);
        n.querySelectorAll && n.querySelectorAll('#vector-main-menu, #vector-main-menu-pinned, .vector-drawer, #mw-panel')
          .forEach(processRoot);
      });
    });
  });
  mo.observe(document.body, { childList: true, subtree: true });
})();