Spark TextArea: Finding the Number of Lines in a Paragraph

Here's a simple example of something that iterates over the lines to get the size of the paragraph:

private function paragraphHeight(p:ParagraphElement):Number

{

     var height:Number = 0;

     var pos:int = p.getAbsoluteStart();

     var endPos:int = pos + p.textLength;

     while (pos < endPos)

     {

          var line:TextFlowLine = p.getTextFlow().flowComposer.findLineAtPosition(pos);

          height += line.height;

          pos += line.textLength;

     }

     return height;

}