private void onNewHotPointY(boolean briefIntroduction) { final int count = model.getRowCount(); hotPointX = hotPointY < count ? initialHotPointX : 0; cellShift = 0; environment.onAreaNewHotPoint(this); if (hotPointY < count) appearance.introduceRow(model, hotPointY, briefIntroduction ? INTRODUCTION_BRIEF : 0); else environment.hint(Hints.EMPTY_LINE); }