/** {@inheritDoc} */
 @Override
 public void saveDispositions(List<Disposition> dispositions) {
   Preferences.Layout.setLandscapeDisposition(getActivity(), dispositions);
 }
 /** {@inheritDoc} */
 @Override
 public int getRows() {
   // inverted
   return Preferences.Layout.getCols(getActivity());
 }
 /** {@inheritDoc} */
 @Override
 public List<Disposition> getCurrentDispositions() {
   return Preferences.Layout.getLandscapeDisposition(getActivity());
 }