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Re: ARIA setsize attribute

From: Alexander Surkov <surkov.alexander@gmail.com>
Date: Sat, 12 Dec 2009 14:36:41 +0800
Message-ID: <faf3cb2b0912112236t6ea321d1na1e0733966c817ea@mail.gmail.com>
To: James Craig <jcraig@apple.com>
Cc: Hans Hillen <hhillen@paciellogroup.com>, wai-xtech@w3.org, David Bolter <dbolter@mozilla.com>, Richard Schwerdtfeger <schwer@us.ibm.com>
Ok. I think this example makes sense, however I'm not sure if it's a
real use case to load tree items from the end. Any way it could be.

Does it make sense to enable this feature for single-level trees,
grids and lists?


On Sat, Dec 12, 2009 at 11:19 AM, James Craig <jcraig@apple.com> wrote:
> On Dec 11, 2009, at 7:08 PM, Alexander Surkov wrote:
>> I think aria-setsize can be calculated easy enough from aria-level
>> attribute for the flat trees like
>> <div role="tree">
>>  <div role="treeitem" aria-level="1">item1</div>
>>  <div role="treeitem" aria-level="2">item1.1</div>
>>  <div role="treeitem" aria-level="2">item1.2</div>
>> <div role="treeitem" aria-level="1">item2</div>
>> </div>
> That's because you've completed the set of two. If all the tree items are in the DOM, you're right. It's not a problem, but the same heuristics would not be applicable to subgroups in XHR-loaded or otherwise DOM-loaded trees like this:
> <!-- tree's set size ~10,000 -->
> <div role="tree">
>        <!-- this particular subgroup's set size ~300 -->
>        <!-- currently display only a few items out of the middle of a subset -->
>        <div role="treeitem" aria-level="3" aria-posinset="153"> bop </div>
>        <div role="treeitem" aria-level="3" aria-posinset="154"> bar </div>
>        <div role="treeitem" aria-level="3" aria-posinset="155"> baz </div>
>        <div role="treeitem" aria-level="3" aria-posinset="156"> bop </div>
> </div>
Received on Saturday, 12 December 2009 06:37:20 UTC

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