down method

void down()

Move down in the list of rows.

Implementation

void down() {
  final vp = verticalPosition;
  if (vp == null) {
    if (rows.isNotEmpty) {
      verticalPosition = 0;
    }
  } else {
    verticalPosition = min(rows.length - 1, vp + 1);
  }
  showCurrent();
}