Spark TextArea or RichText autosize

Question

I have done lots of searching on this subject, but it seems what I am finding is either out of date or just does not seem to work.

With TextFields in the past, you could set the TextField to a certain width, set wordWrap to true and you would end up with a textfield that changed height according to the text you added.

Now I am trying to do this with either the Spark TextArea or RichText.

I tried this HeightInLines = NAN, but that seems to be out of date.

I also tried this routine:

var totalHeight:uint = 10;
this.validateNow();
var noOfLines:int = this.mx_internal::getTextField().numLines;
for (var i:int = 0; i < noOfLines; i++) 
{
     var textLineHeight:int = 
                     this.mx_internal::getTextField().getLineMetrics(i).height;
     totalHeight += textLineHeight;
}
this.height = totalHeight;

But the mx_internal is not in the Spark components.

I am trying to do this with AS3, not MXML. If anyone has any suggestions or links that could help me figure this out using AS3, I'd really appreciate it.

Answer 1

Been struggling with this all afternoon. But it looks like the RichEditableText component will autosize if you set its width and leave its height undefined.