private void showField(int pos) {
    Field field = fields.get(pos);
    fieldScreenView.showField(pos, field, fieldDisplayMap.get(field), pos == currentPosition,
      headerMaxLength, descriptionMaxLength, moveMode);
  }
The presentation logic for the field screen.
hbase-hbtop/src/main/java/org/apache/hadoop/hbase/hbtop/screen/field/FieldScreenPresenter.java