[Urwid] radio button magic

[Ian Ward]

Eric S. Johansson wrote:
> For what it's worth, the only time I change the radio buttons is when I 
> change the configuration return to me in a different part of the user 
> interface.  Which reminds me, what's the best way of implementing a 
> selection box?  I'm currently using an edit box where the user edits the 
> number to select a different configuration. 

The closest I've seen is Rebecca's example program that creates 
drop-down menus:
http://excess.org/urwid/rbreu_menus.py

I'm planning to make some changes to Canvas that will let you "pop up" 
windows to do selection boxes etc, but it's not very easy to do right now.

> failing a simple solution, 
> how about what is the best way to get just what the user has typed and 
> not the entire contents of the edit box?  again, I just need a simple 
> single character integer 0-7.

You could make a widget that has a keypress() function, eg:

class SelectionThing(urwid.WidgetWrap):
	def __init__(self):
		urwid.WidgetWrap.__init__(self, urwid.Text("Press 0-7"))
	def keypress(self, size, key):
		if key in list("01234567"):
			# do something
			return None
		return key

Ian