Function collision

codebase/sources/dhtmlxscheduler.js:9912–10032

(scheduler2)

    };
  }
  function collision(scheduler2) {
    let temp_section;
    let before;
    scheduler2.config.collision_limit = 1;
    function _setTempSection(event_id) {
      const checked_mode = scheduler2._get_section_view();
      if (checked_mode && event_id) {
        temp_section = scheduler2.getEvent(event_id)[scheduler2._get_section_property()];
      }
    }
    scheduler2.attachEvent("onBeforeDrag", function(id) {
      _setTempSection(id);
      return true;
    });
    scheduler2.attachEvent("onBeforeLightbox", function(id) {
      const ev = scheduler2.getEvent(id);
      before = [ev.start_date, ev.end_date];
      _setTempSection(id);
      return true;
    });
    scheduler2.attachEvent("onEventChanged", function(id) {
      if (!id || !scheduler2.getEvent(id))
        return true;
      const ev = scheduler2.getEvent(id);
      if (!scheduler2.checkCollision(ev)) {
        if (!before)
          return false;
        ev.start_date = before[0];
        ev.end_date = before[1];
        ev._timed = this.isOneDayEvent(ev);
      }
      return true;
    });
    scheduler2.attachEvent("onBeforeEventChanged", function(ev, e, is_new) {
      return scheduler2.checkCollision(ev);
    });
    scheduler2.attachEvent("onEventAdded", function(id, ev) {
      const result = scheduler2.checkCollision(ev);
      if (!result)
        scheduler2.deleteEvent(id);
    });
    scheduler2.attachEvent("onEventSave", function(id, edited_ev, is_new) {
      edited_ev = scheduler2._lame_clone(edited_ev);
      edited_ev.id = id;
      if (!(edited_ev.start_date && edited_ev.end_date)) {
        const ev = scheduler2.getEvent(id);
        edited_ev.start_date = new Date(ev.start_date);
        edited_ev.end_date = new Date(ev.end_date);
      }
      if (edited_ev.rrule && !edited_ev.recurring_event_id || edited_ev.rec_type) {
        scheduler2._roll_back_dates(edited_ev);
      }
      return scheduler2.checkCollision(edited_ev);
    });
    scheduler2._check_sections_collision = function(first, second) {
      const map_to = scheduler2._get_section_property();
      if (first[map_to] == second[map_to] && first.id != second.id)
        return true;