[twill] Setting ListControls by Value

[sureshvv]

I needed to be able to set a list control by value.
So I added three lines to the set_form_control_value method in utils.py
as shown:

----------------------------------------------------------

def set_form_control_value(control, val):
     """
     Helper function to deal with setting form values on lists etc.
     """
     if isinstance(control, ClientForm.ListControl):
 >        if val[0:2] == '__':
 >            control.set(1, val[2:], by_label=True )
 >        else:
             control.set(1, val)
     else:
         control.value = val

----------------------------------------------------------

Basically you need to prefix the value with __ (two underscores).

It works for me. The syntax may be somewhat and could be improved ;)


Suresh