Develop example of spinbutton design pattern

[mcking65]

The spinbutton design pattern is at:
http://w3c.github.io/aria-practices/#spinbutton

Link to Work in Progress

View the example spinbutton in the feature branch

[mcking65]

@gerardkcohen is working on this issue.

[eknowles]

@mcking65 is this not describing an input[type=number] ? https://developer.mozilla.org/en-US/docs/Web/HTML/Element/input/number apart from the page up/down large step function?

[mcking65]

@eknowles, yes, HTML input type number is mapped as a spin button. So, if the native html element meets your needs, do not make a custom ARIA spin button.

[jongund]

Matt,

My student and I are working on a spin button example. If that is ok with you.

Jon

[mcking65]

@jongund, Gerard has already submitted #724.

[mcking65]

@gerardkcohen, do you have time this week to wrap up js and css for this example? I could help out with the documentation. Wondering if we can get it done soon. I would consider delaying release 2 a few days if so. We need time on calendar for working group review.

[mcking65]

When focus is in the spin button, it is capturing all key events. Can not tab out, cannot use modified keys like alt+d to go to addressbar, etc.