Flex - autoscrolable text area

Need TextArea with automatic scrolling to bottom?
This is not trivial, but simple:

---

emc\components\AutoScrollableTextArea.as

package emc.components {
import mx.controls.TextArea;

public class AutoScrollableTextArea extends TextArea {
    override protected function updateDisplayList(unscaledWidth:Number, unscaledHeight:Number):void
    {
        super.updateDisplayList(unscaledWidth, unscaledHeight);
        verticalScrollPosition = textField.numLines;
    }
}
}

For example, it is useful for outputting log information.