Function modals

codebase/sources/dhtmlxscheduler.js:12249–12346

(scheduler2)

    scheduler2.$keyboardNavigation.DataArea.prototype.bindAll(scheduler2.$keyboardNavigation.DataArea.prototype.keys);
  }
  function modals(scheduler2) {
    (function() {
      var modalsStack = [];
      function isModal() {
        return !!modalsStack.length;
      }
      function isChildOf(child, parent) {
        while (child && child != parent) {
          child = child.parentNode;
        }
        return !!(child == parent);
      }
      function afterPopup(box) {
        setTimeout(function() {
          if (scheduler2.$destroyed) {
            return true;
          }
          if (!isModal() && !isChildOf(document.activeElement, scheduler2.$container)) {
            scheduler2.focus();
          }
        }, 1);
      }
      function startModal(box) {
        scheduler2.eventRemove(box, "keydown", trapFocus);
        scheduler2.event(box, "keydown", trapFocus);
        modalsStack.push(box);
      }
      function endModal() {
        var box = modalsStack.pop();
        if (box) {
          scheduler2.eventRemove(box, "keydown", trapFocus);
        }
        afterPopup();
      }
      function isTopModal(box) {
        return box == modalsStack[modalsStack.length - 1];
      }
      function trapFocus(event2) {
        var event2 = event2 || window.event;
        var target = event2.currentTarget;
        if (!isTopModal(target))
          return;
        scheduler2.$keyboardNavigation.trapFocus(target, event2);
      }
      function traceLightbox() {
        startModal(scheduler2.getLightbox());
      }
      scheduler2.attachEvent("onLightbox", traceLightbox);
      scheduler2.attachEvent("onAfterLightbox", endModal);
      scheduler2.attachEvent("onAfterQuickInfo", function() {
        afterPopup();
      });
      if (!scheduler2._keyNavMessagePopup) {
        scheduler2._keyNavMessagePopup = true;
        var focusElement = null;
        var backupFocus = null;
        const modalsStack2 = [];
        scheduler2.attachEvent("onMessagePopup", function(box) {