There is a global "Focus" method - Selection.getFocus(). I
don't understand exactly why that would cause problems for you -
that's a good thing isn't it? you don't need to bother with focus
listeners like you were considering. Using the Key Class(Key is a
class, not a MovieClip) to determine when the Enter key is pressed,
you could check which textfield has focus with
Selection.getFocus().
Alternatively, you could put an onChanged event handler on
the textfield and check if (Key.getCode() == Key.ENTER). this will
only work if your text box is multiline as the Enter key won't
trigger an onChanged otherwise.
There is a global "Focus" method - Selection.getFocus(). I don't understand exactly why that would cause problems for you - that's a good thing isn't it? you don't need to bother with focus listeners like you were considering. Using the Key Class(Key is a class, not a MovieClip) to determine when the Enter key is pressed, you could check which textfield has focus with Selection.getFocus().