docs: function () {
              var outerWidth = this._outerWidth;
              var newValue;
              if (outerWidth < 0) {
                  newValue = -1;
              } else {
                  newValue = outerWidth - this._iconsWidth;
                  if (newValue < 0) {
                      newValue = 0;
                  }
              }
              if (this._frameWidth !== newValue) {
                  this._frameWidth = newValue;
                  return true;
              }
              return false;
          }