MediaWiki:Timeless.js

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/*
  VortanMU - Timeless sidebar behavior (v3)
  - Hover to open (desktop) + click to toggle (touch/keyboard)
  - Keeps original Timeless structure (portlets)
  - Avoids conflicts with any previously-injected mega-menu nodes

  Install: paste into MediaWiki:Timeless.js (replace your current sidebar script).
*/
(function () {
  'use strict';
  if (window.VM_TIMELESS_SIDEBAR_V3) return;
  window.VM_TIMELESS_SIDEBAR_V3 = true;

  function enhanceSidebar() {
    var nav = document.getElementById('mw-site-navigation');
    if (!nav) return;

    nav.classList.add('vm-nav');

    // Remove any old injected mega-menu nodes (common source of “applies then reverts”)
    Array.prototype.forEach.call(nav.querySelectorAll('ul.submenu'), function (el) {
      el.parentNode && el.parentNode.removeChild(el);
    });

    var portlets = Array.prototype.slice.call(
      nav.querySelectorAll('.mw-portlet[role="navigation"]')
    );

    var hoverCapable = !!(window.matchMedia && window.matchMedia('(hover:hover) and (pointer:fine)').matches);

    function setExpanded(p, expanded) {
      var h = p.querySelector('h3.vm-portlet__header') || p.querySelector('h3');
      if (h) h.setAttribute('aria-expanded', expanded ? 'true' : 'false');
    }

    function closePortlet(p) {
      p.classList.remove('is-open');
      setExpanded(p, false);
    }

    function openPortlet(p) {
      // close others (keeps sidebar clean), but never close Wiki tools
      portlets.forEach(function (other) {
        if (other !== p && other.id !== 'p-tb') closePortlet(other);
      });
      p.classList.add('is-open');
      setExpanded(p, true);
    }

    portlets.forEach(function (p) {
      var h3 = p.querySelector('h3');
      var body = p.querySelector('.mw-portlet-body');
      if (!h3 || !body) return;

      h3.classList.add('vm-portlet__header');
      body.classList.add('vm-portlet__body');

      // If something hid the original <ul> inline, bring it back
      var ul = body.querySelector('ul');
      if (ul && ul.style && ul.style.display === 'none') ul.style.display = '';

      // Wiki tools: always visible
      if (p.id === 'p-tb') {
        p.classList.add('is-open');
        h3.setAttribute('aria-expanded', 'true');
        return;
      }

      // default closed
      closePortlet(p);

      // accessibility + click toggle
      h3.setAttribute('role', 'button');
      h3.setAttribute('tabindex', '0');
      h3.setAttribute('aria-expanded', 'false');

      function toggle() {
        if (p.classList.contains('is-open')) closePortlet(p);
        else openPortlet(p);
      }

      h3.addEventListener('click', function (e) {
        e.preventDefault();
        toggle();
      });

      h3.addEventListener('keydown', function (e) {
        if (e.key === 'Enter' || e.key === ' ') {
          e.preventDefault();
          toggle();
        }
      });

      // Hover open (desktop)
      if (hoverCapable) {
        var t;
        p.addEventListener('mouseenter', function () {
          if (t) clearTimeout(t);
          openPortlet(p);
        });
        p.addEventListener('mouseleave', function () {
          if (t) clearTimeout(t);
          t = setTimeout(function () { closePortlet(p); }, 180);
        });
      }
    });
  }

  // Run on normal loads + after purge/navigation
  if (window.mw && mw.hook) {
    mw.hook('wikipage.content').add(enhanceSidebar);
  } else if (document.readyState === 'loading') {
    document.addEventListener('DOMContentLoaded', enhanceSidebar);
  } else {
    enhanceSidebar();
  }
})();