MediaWiki:Common.js

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/* Any JavaScript here will be loaded for all users on every page load. */
( function () {
  // only run when DOM ready
  function initRaidChecks() {
    // find containers
    var containers = document.querySelectorAll('.raid-checkboxify');
    if (!containers.length) return;

    containers.forEach(function (container, idx) {
      var links = Array.from(container.querySelectorAll('a'));
      links.forEach(function (a, i) {
        // skip if it's already processed
        if (a.classList.contains('raid-processed')) return;

        // create checkbox input
        var cb = document.createElement('input');
        cb.type = 'checkbox';
        cb.className = 'raid-checkbox-input';
        cb.style.marginRight = '8px';
        cb.style.verticalAlign = 'middle';

        // wrap the link & checkbox in a label so clicking text toggles checkbox
        var label = document.createElement('label');
        label.style.display = 'block';
        label.style.cursor = 'pointer';

        // move link inside label
        a.parentNode.insertBefore(label, a);
        label.appendChild(cb);
        label.appendChild(a);

        a.classList.add('raid-processed');

        // restore state from localStorage
        var key = 'raidcheck:' + (document.title || location.pathname) + ':' + a.getAttribute('href');
        try {
          var stored = localStorage.getItem(key);
          if (stored === '1') cb.checked = true;
        } catch (e) {}

        cb.addEventListener('change', function () {
          try {
            if (cb.checked) localStorage.setItem(key, '1');
            else localStorage.removeItem(key);
          } catch (e) {}
        });
      });
    });
  }

  if (document.readyState === 'loading') {
    document.addEventListener('DOMContentLoaded', initRaidChecks);
  } else {
    initRaidChecks();
  }
})();