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Re: resolution supporting navsubstree change proposal

From: Steven Faulkner <faulkner.steve@gmail.com>
Date: Tue, 16 Mar 2010 09:17:21 +0000
Message-ID: <55687cf81003160217i6be384ecwf771e916f4b0744f@mail.gmail.com>
To: Maciej Stachowiak <mjs@apple.com>
Cc: Richard Schwerdtfeger <schwer@us.ibm.com>, Michael Smith <mike@w3.org>, public-html-a11y@w3.org
Hi maciej,

>To reframe my earlier line of questioning - is it conforming to specify
navsubtree=false?

yes, for example if there is a canvas based chart along with a html table of
the chart data:

<canvas navsubtree="false"> your browser does not support the graphical
rendering of the data, browser x or y is required</canvas>

<table>
chart data
</table>
as in the current spec, the accessible alternative does not have to be
provided within the canvas. in the example above the accessible alternative
is provided outside of the canvas, the canvas content is fallback.

regards
steve
On 16 March 2010 09:05, Maciej Stachowiak <mjs@apple.com> wrote:

>
>  On Mar 16, 2010, at 1:57 AM, Steven Faulkner wrote:
>
>  hi maciej,
>
> my understanding is that in the navsubtree proposal the default state is
> for the canvas content to be navigable, as it is in the spec currently.
>
>
> I see. That does make a difference. To reframe my earlier line of
> questioning - is it conforming to specify navsubtree=false? If so, does that
> mean it would now be conforming to have inaccessible canvas content, or are
> authors required to provide some alternate means of accessibility if they
> specify that value? If the latter, what are some examples of how they would
> do that?
>
>  >I also do not know where to find a link to the Change Proposal. The only
> link I can find is this, which is not a proper Change Proposal (among other
> things it >lacks rationale): <
> http://lists.w3.org/Archives/Public/public-html-a11y/2010Mar/att-0014/canvaselement-issue74-feedback1.html>.
> Is there a version available >that includes rationale? Perhaps that would
> answer my question.
>
> I have been tasked with writing the proposal based on the link you site
> above which is the modifications to the current, I will have it done this
> week.
>
>
> Looking forward to it...
>
> Regards,
> Maciej
>
>


-- 
with regards

Steve Faulkner
Technical Director - TPG Europe
Director - Web Accessibility Tools Consortium

www.paciellogroup.com | www.wat-c.org
Web Accessibility Toolbar -
http://www.paciellogroup.com/resources/wat-ie-about.html
Received on Tuesday, 16 March 2010 09:18:18 GMT

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