Re: aria-valuestep or equivalent needed to make range widgets operable by AT

Hi James, 

UIA has a RangeValue pattern: https://msdn.microsoft.com/en-us/library/ms743348%28v=vs.110%29.aspx <https://msdn.microsoft.com/en-us/library/ms743348(v=vs.110).aspx>

It shows a small and large increment value. So, in this scenario we have actually 2 value increments and not one. My guess is that Narrator speaks the increment because they are Microsoft. That said, none of the UIA mappings (currently) in our Core mapping spec. mention implementing RangeValue for a Slider, Scrollbar, or a ProgressBar. 

So, if we were to do this then we need to consider what happens on platforms that have 2 different increments. 

I am not saying it is something that can’t be done or should not be done. I am saying that it takes longer than the time we have for 1.1.

Rich

> On May 17, 2016, at 11:02 AM, James Nurthen <james.nurthen@oracle.com> wrote:
> 
> Windows phones (Win10/Edge) seem to deal fine with ARIA sliders when running with Narrator.
> Can we look to see what they are doing in order to enable this without aria-valuestep?
> 
> 
> On 5/16/2016 8:37 PM, James Craig wrote:
>> ARIA group,
>> 
>> A long-standing problem with ARIA sliders is that they can only be made partially accessible, and only on keyboard-based interfaces. There have been some recent brainstorms and discussions about what it would require to make custom ARIA sliders directly operable by AT (for example, on touch screen devices). 
>> 
>> One of the missing links is an a direct equivalent to the @step attribute on <input type="range">. 
>> 
>> Please consider adding @aria-valuestep (or an equivalent attr) for range widgets such as sliders. Ideally this would be an addition to ARIA 1.1 to match HTML and allow for future AT support.
>> 
>> Thanks,
>> James Craig
>> 
>> 
> 
> -- 
> Regards, James
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