line count of the spark TextArea

I'm not sure how to do this -- you might want to ask this question on the Flex forum. You can get the height of the component in pixels, as you can any other Flex component. But depending on how TextArea uses TLF, I'm guessing that the line count that was used to generate the text may not have been preserved. As a quick and dirty method, you could try counting the TextLine children of the component as a DisplayObjectContainer.

- robin