docs: private void setRawDirection(SwipyRefreshLayoutDirection direction) {
          if (mDirection == direction) {
              return;
          }
  
          mDirection = direction;
          switch (mDirection) {
              case BOTTOM:
                  mCurrentTargetOffsetTop = mOriginalOffsetTop = getMeasuredHeight();
                  break;
              case TOP:
              default:
                  mCurrentTargetOffsetTop = mOriginalOffsetTop = -mCircleView.getMeasuredHeight();
                  break;
          }
      }