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Re: Clarification of WCAG intent and meaning of techniques [Re: WCAG considering amending F65 to NOT fail missing ALT text if title or aria-label is present]

From: Steve Faulkner <faulkner.steve@gmail.com>
Date: Thu, 28 Nov 2013 12:51:05 +0000
Message-ID: <CA+ri+V=OQ+Hdb0+T_OfEGaSSogU+jJ5FLQQDDh_AdLgJ8v1nsw@mail.gmail.com>
To: "Schnabel, Stefan" <stefan.schnabel@sap.com>
Cc: Leif Halvard Silli <xn--mlform-iua@xn--mlform-iua.no>, Michael Cooper <cooper@w3.org>, David MacDonald <david100@sympatico.ca>, Janina Sajka <janina@rednote.net>, HTML Accessibility Task Force <public-html-a11y@w3.org>, WCAG WG <w3c-wai-gl@w3.org>, "public-comments-wcag20@w3.org" <public-comments-wcag20@w3.org>, Gregg Vanderheiden <gv@trace.wisc.edu>, "kirsten@can-adapt.com" <kirsten@can-adapt.com>
Hi stefan, issue with this is

SR output: graphic Giraffe grazing on tree branches ... Giraffe grazing on
tree branches

--

Regards

SteveF
HTML 5.1 <http://www.w3.org/html/wg/drafts/html/master/>


On 28 November 2013 12:48, Schnabel, Stefan <stefan.schnabel@sap.com> wrote:

> >> So, to replace @alt with an @aria-* attribute, would be to do the
> opposite of what the WCAG Robustness principle requires
>
> No.
>
> <img src="../images/giraffe.jpg" aria-labelledby="123"/>
> <p id="123">Giraffe grazing on tree branches</p>
>
> is equivalent since even if the image is missing the text describing the
> image is still there.
>
> - Stefan
>
>
> -----Original Message-----
> From: Leif Halvard Silli [mailto:xn--mlform-iua@målform.no]
> Sent: Donnerstag, 28. November 2013 13:31
> To: Steve Faulkner
> Cc: Schnabel, Stefan; Michael Cooper; David MacDonald; Janina Sajka; HTML
> Accessibility Task Force; WCAG WG; public-comments-wcag20@w3.org; Gregg
> Vanderheiden; kirsten@can-adapt.com
> Subject: Re: Clarification of WCAG intent and meaning of techniques [Re:
> WCAG considering amending F65 to NOT fail missing ALT text if title or
> aria-label is present]
>
> Steve Faulkner, Thu, 28 Nov 2013 10:24:29 +0000:
> > Hi Stefan, this only works for criteria that are solely contingent upon
> > accessibility APIs exposing information to AT.
> >
> > For the case of alt it has not been agreed that this is the case.
> >
> > Ramon, for example brought up the case of a low vision user who turns off
> > images in the browser because the information in the images is difficult
> to
> > perceive, but the alt text exposed as text by the browser is not. This
> > involves no AT.
> >
> > In this case what is required for all of the suggested alternatives
> > aria-label etc is that they are displayed in place of an image when an
> > image is not displayed. This is currently not the case. If we can
> interest
> > browser implementers exposing aria-label as text in this case then we
> have
> > a practical alternative to alt.
>
> So, to replace @alt with an @aria-* attribute, would be to do the
> opposite of what the WCAG Robustness principle requires:
> http://www.w3.org/TR/WCAG20/#robust
>
> Leif H Silli
>
>
Received on Thursday, 28 November 2013 12:52:18 UTC

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