Re: addition of HTML role requirement mappings

I want to reiterate James points. Additionally, we have gaps in HTML5
intrinsic host language semantics which we are defining now for both HTML5
and SVG2.

Note: With HTML5.1 and ARIA 1.1 you will not need to put role="table" on a
table element or role="row" on a <tr>. This will continue to reduce
footprints.

Rich


Rich Schwerdtfeger



From:	James Craig <jcraig@apple.com>
To:	Alexander Surkov <surkov.alexander@gmail.com>
Cc:	Steve Faulkner <faulkner.steve@gmail.com>, W3C WAI Protocols &
            Formats <public-pfwg@w3.org>, HTMLWG WG <public-html@w3.org>,
            Richard Schwerdtfeger/Austin/IBM@IBMUS
Date:	02/21/2014 02:08 PM
Subject:	Re: addition of HTML role requirement mappings



Ah. There are several reasons and use cases:

1. ARIA is used for more than just HTML, (e.g. SVG <g role="table">)
2. Some people need to retrofit tablular data on existing sites that do not
use <table> (e.g. <div role="table">)
3. The 1:1 role mapping to HTML is also required for presentation
inheritance. (e.g. <table role="presentation">)
4. The 1:1 role mapping will be useful once we add the Element.computedRole
interface. PFWG-ISSUE-427

HTH,
James


On Feb 21, 2014, at 10:33 AM, Alexander Surkov <surkov.alexander@gmail.com>
wrote:

      No. As I understood there's a suggestion to introduce ARIA table and
      table cell roles duping HTML tables semantics. That was looking the
      bloat for me since I don't see any use case for that.


      On Fri, Feb 21, 2014 at 1:24 PM, James Craig <jcraig@apple.com>
      wrote:
        Are you saying grids are the bloat, or the 1:1 mappings against
        html:table is the bloat?

        On Feb 21, 2014, at 9:38 AM, Alexander Surkov <
        surkov.alexander@gmail.com> wrote:

              If table and table cell ARIA roles are supposed to be a part
              of browser implementation then it looks like spec
              overbloating with no usecase.



              On Fri, Feb 21, 2014 at 12:22 PM, James Craig <
              jcraig@apple.com> wrote:
               Yeah, I think this illustrates that we need to get table and
               cell roles in soon for ARIA 1.1. cell and gridcell can
               probably just be aliases, but table and grid are
               semantically different.



               On Feb 21, 2014, at 5:17 AM, Steve Faulkner <
               faulkner.steve@gmail.com> wrote:

                     Hi all,

                     hixie has added some role requirements and
                     restrictions in the whatwg spec that will  soon come
                     up for cherry picking [1] to the HTML 5.1 spec.
                     previously we determined that some of the following
                     were not appropriate, so am asking for ARIA folk to
                     review:

                     note: implementers MUST map to these roles and authors
                     are restricted to applying the roles listed for each
                     element (authors can also apply role=presentation).

                     strong semantics:

                     table element     grid role
                     tbody element     rowgroup role
                     td element     gridcell role
                     tfoot element     rowgroup role
                     thead element     rowgroup role
                     tr element     row role
                                                                                                             
                                                                                                             
                                                                                                             
 implicit semantics:                                                                                         
                                                                                                             
 th element     gridcell role     Role must be either columnheader, rowheader, or gridcell                   
                                                                                                             
                                                                                                             
                                                                                                             
 [1] https://github.com/w3c/html/commit/5b5ad72b8e7bb36ab863effc942829eef82fe3c4#commitcomment-5449710       
                                                                                                             
                                                                                                             
                                                                                                             
                                                                                                             
                                                                                                             
                                                                                                             
                                                                                                             
                                                                                                             
                                                                                                             
                                                                                                             
                                                                                                             
                                                                                                             
                                                                                                             
                                                                                                             
                                                                                                             

                     --

                     Regards

                     SteveF
                     HTML 5.1