Stepper widget

[scholtzan]

I did some further experimenting and implemented a stepper widget:

I tried to hook it up to a textbox but for it to work textbox would need some kind of on_change callback to update the stepper value.

[cmyr]

For this to work we need some sort of 'validating textbox' that validates its inputs, and can then have it's Data be a numerical type; when an edit happens we check that the new content of the textbox is valid data; if it is we mutate the data and if it isn't we discard the edit.

[cmyr]

Or rather: that's the mechanism I think this should be built on. We will need data-validation for text entry at some point anyway, so it makes sense to reuse that for this widget.

[Ralith]

Currently exploring such a mechanism in #346.

[cmyr]

@scholtzan sorry to let this sit around for so long, it does look like a solid patch. Maybe it's worth seeing if the basic input validation stuff in #346 helps you at all?

[scholtzan]

Thanks! No worries, I've been quite busy the past couple of weeks anyway. Probably will pick it up again after Christmas.

[scholtzan]

Alright, I updated the stepper widget example and got it work with textboxes thanks to Parse.

[cmyr]

Okay cool, sorry for dragging my feet on this! I have a few little observations, but nothing major; we should be able to get this merged shortly.

[scholtzan]

Ready for another look

[cmyr]

okay a few more little nits but basically good to go!

[scholtzan]

Thanks for the comments. Should be ready for another look.

[cmyr]

Looks good, one tiny little thing but then this should be good to go. :)