code: function _getDateFromScrollWheels() {
          var date = new Date(this._date);
          for (var i = 0; i < this.scrollWheels.length; i++) {
              var scrollWheel = this.scrollWheels[i];
              var component = scrollWheel.component;
              var item = scrollWheel.scrollController.getFirstVisibleItem();
              if (item && item.renderNode) {
                  component.setComponent(date, component.getComponent(item.renderNode.date));
              }
          }
          return date;
      }
docs: Gets the selected date from all the scroll-wheels.