findWrapperAndLocalPosition.java

@NonNull
private WrapperAndLocalPosition findWrapperAndLocalPosition(
  int globalPosition
) {
  WrapperAndLocalPosition result;
  
  if (mReusableHolder.mInUse) {
    result = new WrapperAndLocalPosition();
  } else {
    mReusableHolder.mInUse = true;
    result = mReusableHolder;
  }
  
  int localPosition = globalPosition;
  
  for (NestedAdapterWrapper wrapper : mWrappers) {
    if (wrapper.getCachedItemCount() > localPosition) {
      result.mWrapper = wrapper;
      result.mLocalPosition = localPosition;
      break;
    }
    localPosition -= wrapper.getCachedItemCount();
  }
  
  if (result.mWrapper == null) {
    throw new IllegalArgumentException("Cannot find wrapper for " + globalPosition);
  }
  return result;
}