- From: Hans Hillen <hhillen@paciellogroup.com>
- Date: Sat, 12 Dec 2009 16:11:54 +1300
- To: Alexander Surkov <surkov.alexander@gmail.com>
- Cc: wai-xtech@w3.org, David Bolter <dbolter@mozilla.com>, Richard Schwerdtfeger <schwer@us.ibm.com>
Hi Alex > I thought it works. We must have a bug. If you don't mind then please file it. Ok, will file a bug. It would be great if this works because it's currently quite a hassle for me to calculate the setsize value, whereas the level is already known. > > I think it shouldn't be a table element because I meant logical parent like > > <table role="treegrid"> > <tr role="row" aria-level="1" aria-setsize="4"> > <td role="gridcell" aria-posinset="1">item1</td> > </tr> > <tr role="row" aria-level="2"> > <td role="gridcell">item1.1</td> > </tr> > <tr role="row" aria-level="1"> > <td role="gridcell">item2</td> > </tr> > </table> > This should explain my use case better: <table role="tree"> <tr role="presentation"><td role="treeitem" aria-expanded="true" aria-level="1" aria-posinset="1" aria-setsize="3">vegetables</td></tr> <tr role="presentation"><td role="treeitem" aria-level="2" aria-posinset="1" aria-setsize="2">cucumber</td></tr> <tr role="presentation"><td role="treeitem" aria-level="2" aria-posinset="2" aria-setsize="2">carrot</td></tr> <tr role="presentation"><td role="treeitem" aria-expanded="false" aria-level="1" aria-posinset="2" aria-setsize="3">cars</td></tr> <tr role="presentation"><td role="treeitem" aria-level="2" aria-posinset="1" aria-setsize="3">mercedes</td></tr> <tr role="presentation"><td role="treeitem" aria-level="2" aria-posinset="2" aria-setsize="3">BMW</td></tr> <tr role="presentation"><td role="treeitem" aria-level="2" aria-posinset="1" aria-setsize="3">Audi</td></tr> <tr role="presentation"><td role="treeitem" aria-level="1" aria-posinset="3" aria-setsize="3">people</td></tr> </table> Hans > > On Sat, Dec 12, 2009 at 10:47 AM, Hans Hillen <hhillen@paciellogroup.com> wrote: >> Hi Alex, >> >>> >>> I think it is intended to fix DOM structure if some amount of items >>> are not yet loaded. >> OK >>> >>> In your tree example the author shouldn't be forced to use >>> aria-setsize and aria-posinset because they can be calculated easy >>> from aria-level attribute. >> I see, I don't think this is this something Firefox does at the moment? I've just removed the aria-posinset and aria-setsize from my code in the Firebug UI (which is what that example was based on), and it stopped correctly exposing the tree structure. >> >>> Any way aria-setsize could be defined on >>> the treeitem parent in this case. >> >> But in this example the treeitem's parent would be the table element itself, which represents the entire tree rather than a particular tree branch. >> >> Regards, >> Hans >> >>> Alex. >>> >>> >>> On Sat, Dec 12, 2009 at 10:13 AM, Hans Hillen <hhillen@paciellogroup.com> wrote: >>>> From what I understand, aria-setsize is intended to fix dom structures where >>>> the set size can't be determined automatically from the DOM, e.g. a tree >>>> widget that is marked up as a flat html table and every row has a role of >>>> treeitem. In this case case the treeitems are not grouped by branch in the >>>> DOM structure, so you would need to apply aria-setsize aria-posinset to and >>>> aria-level to every treeitem to fix this lack of structure. >>>> Wouldn't setting aria-setsize on a container be a bit pointless, because: >>>> >>>> If the container truly represents the set, then you wouldn't need the >>>> aria-setsize attribute anymore because the setsize can be determined from >>>> the DOM structure. If it can't be (for example because certain child roles >>>> are not DOM children of the container) then aria-owns should be used and the >>>> user agent should add it to the automatically calculated set size. >>>> If the container does not reflect the actual set (as in my tree example >>>> above), then aria-setsize wouldn't be applicable on this node. >>>> >>>> Unless I'm missing something? >>>> Regards, >>>> >>>> Hans Hillen >>>> TPG Europe >>>> >>>> >>>> >>>> >>>> >>>> On Dec 12, 2009, at 2:29 PM, Alexander Surkov wrote: >>>> >>>> Hi. >>>> >>>> The ARIA specification says "This property is marked on the members of >>>> a set, not the container element that collects the members of the set. >>>> " (see http://www.w3.org/WAI/PF/aria/states_and_properties#aria-setsize). >>>> However the same time it provides an example where the aria-setsize is >>>> used on the container element: >>>> >>>> <ul role="listbox" aria-setsize="16" aria-labelledby="label_fruit"> >>>> <li role="option" aria-posinset="1"> apples </li> >>>> >>>> I find the idea to define aria-setsize on the container element >>>> reasonable and useful and I would happy if the user agents would take >>>> into account the aria-setsize on the container only. But I'm fine with >>>> either way because currently aria-setsize is supposed to be used on >>>> the item. >>>> >>>> Can the spec be fixed? >>>> >>>> Thank you. >>>> Alex. >>>> >>>> >>>> >>> >> >> >
Received on Saturday, 12 December 2009 03:12:45 UTC