code: @Override
  	protected void sizeChanged () {
  		lastText = null; // Cause calculateOffsets to recalculate the line breaks.
  
  		// The number of lines showed must be updated whenever the height is updated
  		BitmapFont font = style.font;
  		Drawable background = style.background;
  		float availableHeight = getHeight() - (background == null ? 0 : background.getBottomHeight() + background.getTopHeight());
  		linesShowing = (int) Math.floor(availableHeight / font.getLineHeight());
  	}
docs: OVERRIDE from TextField