Re: [Bug 12590] New: @role=presentation for IMG should also require that @title is empty

Do any members of the task force support this request? If so, please reply
with comments either here or in bugzilla.

I've not found any record of this request being discussed on this list nor
in the meeting minutes for the TF or any subteams.

Does PFWG support this request?

  --Mike

bugzilla@jessica.w3.org, 2011-05-03 17:35 +0000:

> http://www.w3.org/Bugs/Public/show_bug.cgi?id=12590
> 
>            Summary: @role=presentation for IMG should also require that
>                     @title is empty
>            Product: HTML WG
>            Version: unspecified
>           Platform: PC
>                URL: http://dev.w3.org/html5/spec/content-models.html#table
>                     -aria-strong
>         OS/Version: All
>             Status: NEW
>           Keywords: a11y, aria
>           Severity: normal
>           Priority: P3
>          Component: HTML a11y APIs (editor: Steve Faulkner, Cynthia
>                     Shelley)
>         AssignedTo: faulkner.steve@gmail.com
>         ReportedBy: xn--mlform-iua@xn--mlform-iua.no
>          QAContact: public-html-bugzilla@w3.org
>                 CC: mike@w3.org, laura.lee.carlson@gmail.com,
>                     public-html-wg-issue-tracking@w3.org,
>                     public-html@w3.org, xn--mlform-iua@xn--mlform-iua.no,
>                     bhawkeslewis@googlemail.com, public-html-a11y@w3.org
> 
> 
> The #table-aria-strong table currently says that
> 
> ]]
>        img element whose alt attribute's value is empty
>    = presentation role    [[
> 
> There seems to be agreement (see message from Richard [1]) that, in addition to
> @alt being empty, the @title attribute must also be absent or empty.  We also
> have a disputed Decision which says that a non-empty @title should be counted
> as equal to a non-empty @alt: Even if the Decision is disputed, the Decision
> anyhow supports the view that a non-empty @title makes the IMG
> non-presentational. AT behaviour also supports this view - see JUSTIFICATION
> sectoin below.
> 
> Thus, please update the  #table-aria-strong table to say something like the
> following:
> 
> ]]
>        img element whose alt attribute's value is empty
>        and whose @title attribute is empty or omitted
>    = presentation role    [[
> 
> JUSTIFICATION:
> 
> It is too simplistic to draw a direct link beween empty @alt and
> role=presentation. As explained in bug 12587, the effect of applying <img
> title="Lorem ipsum" role=presentation> is - in praxis - different from using an
> empty <img title="Lorem ipsum" alt="">: In the former case the IMG is
> completely hidden. In the latter case, the @title might be presented to the AT
> user.
> 
> For example VoiceOver treats <img title="Lorem ipsum" alt=""> as
> non-presentational, due to the presence of @title, which it reads to the user.
> Also, inside links, the IMG's title is used by VoicOver (and probably also
> several other AT, see Steve's research from 2005 [2] ) if there is no @alt. The
> same goes for @alt in <area> elmements, where it seems VoiceOver actually
> prefers @title over @alt.
> 
> Bug 12587 points to an example in the wild [3] which examplifies the issue: 
> 
> <a href="[link]">
>   <img src="http://images.apple.com/support/iknow/images/i_call_adv.png"
>    alt=""  title="Apple Support Express Lane">
> </a>
> 
> [1] http://lists.w3.org/Archives/Public/public-html-a11y/2011May/0042
> [2] http://www.paciellogroup.com/resources/articles/WE05/forms.html
> [3] http://support.apple.com/kb/HT3669
> 
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-- 
Michael[tm] Smith
http://people.w3.org/mike/+

Received on Monday, 21 November 2011 22:39:28 UTC