[Tcllib-devel] SNIT enhancement

[Damon C. <da...@tc...>]

All,

    Would anyone be opposed to me adding a -validtype argument to 
options in SNIT?  The purpose is to add a feature that nearly every 
megawidget system needs but most write their own for.  Goes like this:

option add -state -default normal -validtype {enum {disabled normal}}
option add -background -default white -validtype color
option add -autoscroll -default 1 -validtype boolean
option add -index -default 0 -validtype int
etc..

    All it really does is override the -validatemethod for the given 
option with a proc called snit::validateOption that does the very basic 
validation of an option based on type.  The types I've defined are:

boolean
color
enum
int
nullboolean (can be boolean or null)
padding (can be a single number or a pair of numbers)

    There are more you can add, but that is all that BWidget uses, and 
it pretty much covers the basics.  I already have the code done if 
everyone can agree that it's a worthwhile change.  I'd really hate to 
see every single megawidget system built on top of SNIT have to define 
all this themselves.  It's a fundamental piece.  Even Tk has a standard 
routine for checking options (at the C level, mind you).

Damon