So we do have two use cases.
#1 Example of spanned cells in a table having missed column
<div role="table" aria-colcount="4">
<div role="row">
<div role="cell" aria-colindex="1" aria-colspan="2">cell 1</div>
<div role="cell" aria-colindex="4">cell 4</div>
</div>
<div role="row">
<div role="cell" aria-colindex="1" aria-colspan="2">cell 1</div>
<div role="cell" aria-colindex="2">cell 2</div>
<div role="cell" aria-colindex="4">cell 4</div>
</div>
</div>
#2 Example of spanned cells
<div role="table">
<div role="row">
<div role="cell" aria-colspan="2">cell 1</div>
</div>
<div role="row">
<div role="cell">cell 1</div>
<div role="cell">cell 2</div>
</div>
</div>
Do I understand correct that the table interface should take into account
of aria-colspan in case #2, and it should ignore it in case #3?
On Sun, Jun 28, 2015 at 9:13 PM, James Teh <[email protected]> wrote:
> I think it should. However, this shows up an edge case. What if the author
> provides non-contiguous rows or columns, as aria-row/colindex allows? For
> example, suppose only columns 1 and 4 were in the DOM (using
> aria-colindex), but column 1 had a span of 2 (using aria-colspan). Column 4
> in the DOM would be mapped to column 2 in the table interface (since the
> table interface is always contiguous). In this case, the table interface
> should not expose column extent for column 1, since that would suggest that
> column 2 in the table interface was spanned (which is column 4 in the DOM).
> So now we need a secondary way of exposing aria-colspan, perhaps an object
> attribute. This is really quite hideous. FWIW, I don't know of any API that
> can handle this; UIA can't either.
>
> Jamie
>
>
> On 27/06/2015 8:15 AM, Alexander Surkov wrote:
>
>> Hey. ARIA introduced aria-rowspan and aria-colspan attributes [1] and
>> [2]. Should be they exposed as part of IAccessibleTable interface, i.e.
>> as col/row extents?
>>
>> [1] https://rawgit.com/w3c/aria/master/aria/aria.html#aria-rowspan
>> [2] https://rawgit.com/w3c/aria/master/aria/aria.html#aria-colspan
>>
>>
>>
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>>
> --
> James Teh
> Executive Director, NV Access Limited
> Ph +61 7 3149 3306
> www.nvaccess.org
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