[Accessibility-ia2] next changes to IAccessible2

Pete Brunet pete at a11ysoft.com
Wed Jun 22 10:39:20 PDT 2011



On 6/22/2011 12:10 PM, Richard Schwerdtfeger wrote:
>
>
>
> Rich Schwerdtfeger
> CTO Accessibility Software Group
>
> accessibility-ia2-bounces at lists.linuxfoundation.org wrote on
> 06/22/2011 11:16:41 AM:
>
> > From: Pete Brunet <pete at a11ysoft.com>
> > To: IA2 List <Accessibility-ia2 at lists.linux-foundation.org>
> > Date: 06/22/2011 11:19 AM
> > Subject: Re: [Accessibility-ia2] next changes to IAccessible2
> > Sent by: accessibility-ia2-bounces at lists.linuxfoundation.org
> >
> >
> > On 6/22/2011 8:27 AM, Richard Schwerdtfeger wrote:
> > Pete,
> >
> > I am looking at accessibleDocument. Should we not do more than that
> > for a document interface? Should we also have features to collect
> > and access specific objects with a specific element type - filtering
> > mechanisms?
> > Hi Rich, It's been a long time since I looked at accessibleDocument.
> > (It's not part of IA2.) I couldn't find a link in my archives.
> > Please send it. Would that discussion be better held on the parent
> > LF a11y list at accessibility at lists.linux-foundation.org ? That
> > will also be of interest to the Linux a11y architects.
> >
> I have no idea. I just found it odd that we would add only one method
> for a document.
>
You said you were looking at accessibleDocument.  Please send me a link
to what you are looking at.  accessibleDocument is not part of IA2.  For
Symphony documents access is provided via IAccessibleText,
IAccessibleHyperText, and IAccessibleHyperlink.
>
>
> > Note: I am in favor of not unnecessarily growing the API. API
> > changes cause a lot of churn. However, with the FCC adopting
> > creating new laws based on the 21st Century Communication and Video
> > act there is a need for infrastructure to better support the HTML 5
> > changes Silvia is working on to support video and audio.
> >
> > I am looking at the notification mechanism for media
> > MEDIA_TEXT_QUEUE_CHANGE. Would it be better to have a callback
> > registry for ATs similar to what we did in Java? I am concerned
> > about potential OS scheduling issues caused by posting events to the
> > message queue.
> > We've talked about adding something to get around the limitations of
> > WinEvent, primarily the lack of an event payload so out of process
> > AT don't have to use (and possibly get stale data) on a following
> > call fetching event data. It's not become enough of an issue that
> > the group has pushed that change through though.
> >
> > For in process AT the callback happens on the same thread that fires
> > the event. Jamie might be able to comment on what problems there
> > might be for out of process AT when handing a cue change event.
> >
>
> I think the difference here is we are trying to keep the video and
> audio descriptions in synch. That adds an additional level of concern
> for me. I will look to see what Jamie says. Descriptions could be
> quite long.
> >
> >
> >
> > Rich Schwerdtfeger
> > CTO Accessibility Software Group
> >
> > [image removed] Pete Brunet ---06/06/2011 11:12:32 PM---Hi all,
> > Please take a look at this and provide your feedback: https://
> > wiki.mozilla.org/Accessibility
> >
> > From: Pete Brunet <pete at a11ysoft.com>
> > To: IA2 List <Accessibility-ia2 at lists.freestandards.org>
> > Date: 06/06/2011 11:12 PM
> > Subject: Re: [Accessibility-ia2] next changes to IAccessible2
> > Sent by: accessibility-ia2-bounces at lists.linuxfoundation.org
> >
> >
> >
> > Hi all, Please take a look at this and provide your feedback:
> >
> > https://wiki.mozilla.org/Accessibility/IA2_1.3
> >
> > Thanks, Pete
> > --
> > Pete Brunet
> >
> > a11ysoft - Accessibility Architecture and Development
> > (512) 238-6967 (work), (512) 689-4155 (cell)
> > Skype: pete.brunet
> > IM: ptbrunet (AOL, Google), ptbrunet at live.com (MSN)
> > http://www.a11ysoft.com/about/
> > Ionosphere: WS4G
> >
> > On 3/11/2011 11:10 PM, Alexander Surkov wrote:
> > Hi, Jamie. I missed Mick suggestion on the list. It's sounds
> > reasonable and I agree we should try it before getting new API for
> > this since the issue is mostly about events.
> >
> > Thank you.
> > Alex.
> >
> >
> > On Sat, Mar 12, 2011 at 11:43 AM, James Teh <jamie at nvaccess.org> wrote:
> > Hi.
> >
> > Nice work; good to get the discussion going. :)
> >
> > I still don't see a need for this registry API. Why not just use
> > IsWinEventHookInstalled(), as Mick suggested on the IA2 list?
> >
> > Thanks.
> >
> > Jamie
> >
> >
> > On 12/03/2011 3:48 AM, Alexander Surkov wrote:
> > Hi.
> >
> > I gathered ideas into one doc -
> > https://wiki.mozilla.org/Accessibility/IA2_1.3. Please give feedback
> > here and feel free to edit the wiki.
> >
> > Thank you.
> > Alex.
> >
> > --
> > James Teh
> > Vice President, Developer
> > NV Access Inc, ABN 61773362390
> > Email: jamie at nvaccess.org
> > Web site: http://www.nvaccess.org/
> > _______________________________________________
> > Accessibility-ia2 mailing list
> > Accessibility-ia2 at lists.linuxfoundation.org
> > https://lists.linux-foundation.org/mailman/listinfo/accessibility-ia2
> > _______________________________________________
> > Accessibility-ia2 mailing list
> > Accessibility-ia2 at lists.linuxfoundation.org
> > https://lists.linux-foundation.org/mailman/listinfo/accessibility-ia2
>

-- 
*Pete Brunet*
                                                                
a11ysoft - Accessibility Architecture and Development
(512) 689-4155 (cell)
Skype: pete.brunet
IM: ptbrunet (AOL, Google), ptbrunet at live.com (MSN)
http://www.a11ysoft.com/about/
Ionosphere: WS4G
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