Sorry for answering in parts.
On Tue, Jan 13, 2015 at 1:06 PM, Joseph Scheuhammer <clown@alum.mit.edu>
wrote:
> On 2015-01-13 12:35 PM, Alexander Surkov wrote:
>
>> Otherwise aria-setsize on list item is a rather weird thing imo.
>>
>
> The rationale is to handle large data sets where only some of the items
> are loaded into the DOM, at a time. For example, the DOM may have only,
> say, 20 items from somewhere from an actual set of, say 10, 000. Something
> has to indicate which items (aria-posinset) are loaded, and how big the set
> really is (aria-setsize):
>
> " If all items in a set are present in the document structure, it is not
> necessary to set this attribute<http://w3c.github.
> io/aria/aria/aria.html#dfn-attribute>, as the user agent can
> automatically calculate the set size and position for each item. However,
> if only a portion of the set is present in the document structure at a
> given moment, this property<http://w3c.github.io/aria/aria/aria.html#dfn-
> property> is needed to provide an explicit indication of an element's
> position."
> (http://w3c.github.io/aria/aria/aria.html#aria-posinset)
>
> There is a similar rationale for large grids -- the need to declare which
> row (aria-rowindex) and which column (aria-colindex) a gridcell belongs to
> when only part of the grid is loaded into the DOM.
>
My question was whether we really need rowindex/colindex on gridcells and
shouldn't be they defined on rows instead?
>
> --
> ;;;;joseph.
>
> 'Array(16).join("wat" - 1) + " Batman!"'
> - G. Bernhardt -
>
>
Received on Tuesday, 13 January 2015 18:14:37 UTC