HTML-AAM: <datalist> used with non-textbox inputs shouldn't map to aria listbox role

[cyns]

This example from the HTML5 spec has the datalist providing values for the range control, but having no UI of its own. In this case, it would not be mapped to the aria listbox role. I think it would not be mapped at all, only providing value data to the range which is then mapped as a slider. Are there other examples of where datalist is not a listbox?

<input type="range" min="-100" max="100" value="0" step="10" name="power" list="powers">
<datalist id="powers">
<option value="0">
<option value="-30">
<option value="30">
<option value="++50">
</datalist>

https://www.w3.org/TR/html51/semantics.html#range-state-(type=range)

[klown]

@cyns

This example from the HTML5 spec has the datalist providing values for the range control, but having no UI of its own ...

FWIW: If I load that markup into FF, Safari, or Chrome, it's a slider. Also, FF and Safari expose it as a slider in the a11y tree.

The html-aam maps <input type="range" ...> to the ARIA slider role:
http://rawgit.com/w3c/aria/master/html-aam/html-aam.html#el-input-range

The datalist/option is used by Chrome to create tick marks for the 0, -30, and 30 values, which are three of the option/values called out in the datalist. However, I don't see anything corresponding to these ticks in AAPIs,. I don't think any AAPI provides specific support for them.

[cyns]

@klown
How about text change to the mapping to aria to something like
When datalist is the target of a for attribute on an input of type text, email, [rest of the list], maps to the aria role listbox. When datalist is the target of the for attribute on an input of type range, not mapped. [other cases if there are any]

[klown]

@cyns
That sounds okay.

But, other than exploring a datalist for a input type="range", I personally don't know all the combinations of input and datalist, and the resulting GUI. Others who know more, need to vet this.

[cyns]

@stevefaulkner are there other use cases for datalist besides an edit/combobox and a slider?

[jasonkiss]

This issue was moved to w3c/html-aam#26