Re: Longdesc testing in Linux

Hi Janina,

It does not appear that Firefox is exposing the longdesc value to AT-SPI.
 If it is, I cannot find the value anywhere.  However, I cannot explain how
Accerciser knows what the value is. I would think it must know somehow
since it can open the URL when you click the “Perform action” button.
Unless it is passing that request back to Firefox, who is actually handling
the action.  Perhaps someone with more Linux/AT-SPI experience should be
consulted.  I have CC’d joanmarie on this one.

Mark


On Wed, Aug 20, 2014 at 2:15 PM, Janina Sajka <janina@rednote.net> wrote:

> Thanks, Mark. This is very helpful as we continue to develop the
> Implementation Report.
>
> One key question ...
>
> Do you see (via Accerciser) longdesc reported to AT-SPI, the Linux A11y
> API?
>
> This would be our:
>
>
> Sec. 3.0.3 User Agents
>
>     ...
>
>               If the longdesc value is valid, User agents must expose
>               the link to relevant APIs, especially
>               accessibility-oriented APIs.
>
> This is one detail I would particularly like to know for the
> Implementation Report. Thanks for anything you can do on this.
>
> Janina
>
> Mark Sadecki writes:
> > I was excited to hear that support for longdesc was added to Orca [1].  I
> > performed some tests and have the following to report:
> >
> > * Orca will announce “has description” after it reads the alt attribute
> > value for an image with a longdesc attribute.  As joanie notes [1], the
> > user can then invoke the context sensitive menu and choose “View
> > description” to visit the URL referenced in the longdesc attribute.
> > * When inspecting Firefox, Accerciser reports that an Action
> “showlongdesc"
> > is available.  Clicking the “Perform action” button in Accerciser will
> open
> > the URL referenced in the longdesc attribute in another browser tab.
> >
> > A screenshot that illustrates the above is available here:
> >
> https://dl.dropboxusercontent.com/1/view/nsjj327vb8yq4gq/Captured/KpESR.png
> >
> > Steps to reproduce:
> >
> > * downloaded, configured and installed the latest version of Orca [2]
> > 3.13.91pre from the master branch
> > * visited a test page from the longdesc-tests repo [3]
> > * navigate to image with Orca turned on
> > * inspect with Accerciser
> >
> > Special thanks to Joanmarie Diggs for her work maintaining Orca and for
> > adding support for longdesc.
> >
> >  [1] https://mail.gnome.org/archives/orca-list/2014-August/msg00327.html
> > [2] https://git.gnome.org/browse/orca
> > https://git.gnome.org/browse/orca
> > [3]
> >
> https://rawgit.com/chaals/longdesc-tests/master/external-image-external-description-girt-by-spaces.html
> >
> > Mark
>
> --
>
> Janina Sajka,   Phone:  +1.443.300.2200
>                         sip:janina@asterisk.rednote.net
>                 Email:  janina@rednote.net
>
> Linux Foundation Fellow
> Executive Chair, Accessibility Workgroup:       http://a11y.org
>
> The World Wide Web Consortium (W3C), Web Accessibility Initiative (WAI)
> Chair,  Protocols & Formats     http://www.w3.org/wai/pf
>         Indie UI                        http://www.w3.org/WAI/IndieUI/
>
>