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Re: Examples for Implementing Accessible Hide/Show Panels

for

From: Thad C
Date: Apr 27, 2015 6:02PM


Thanks Bryan,

I have read your advise on past threads and you always have well thought
out and well educated comments. Just to simplify the conversation, is it
safe to say that if you have to use an accordion implementation for example
it already exists and you need to make it accessible then you would advise
the following:

- Use aria-expanded on the button that controls the display/hide of the
panel
- Do not explicitly set focus on any one item in the open panel
- Use aria-controls to associate the button with the panel. I don't believe
you mentioned this in the thread but I do see it in the example in your
second response.

Thanks for your great advise.



On Sun, Apr 26, 2015 at 6:58 PM, Bryan Garaventa <
<EMAIL REMOVED> > wrote:

> Another example is available at
>
> http://whatsock.com/tsg/Coding%20Arena/ARIA%20and%20Non-ARIA%20Accordions/ARIA%20Accordion%20(Internal%20Content)/demo2.htm
>
> One thing to keep in mind, it's a flawed paradigm to have only one tab
> stop for an accordion control, because the content is rendered inline with
> the triggering element. This causes major accessibility issues for keyboard
> only users when expanded accordion panels include many active elements,
> since it is then impossible to maintain a contiguous tab order that matches
> the reading order of the page.
>
> Also, accordions are simple control types, and should not need to enforce
> a particular mode of navigation for users such as Applications Mode, which
> is confusing when all you want to do is just expand something and read the
> content. This is what happens when you use ARIA Tab markup on an accordion
> for example, which I don't agree with doing for this reason.
>
> -----Original Message-----
> From: WebAIM-Forum [mailto: <EMAIL REMOVED> ] On
> Behalf Of Birkir R. Gunnarsson
> Sent: Sunday, April 26, 2015 2:18 PM
> To: WebAIM Discussion List
> Subject: Re: [WebAIM] Examples for Implementing Accessible Hide/Show Panels
>
> The OAA examples work quite ok actually, though I do not necessarily agree
> 100% with the markup.
> aria-expanded should be on the buttons that control the display/hide of
> their associated panels rather than on the panels themselves.
> (keep in mind, if we do this, the name of the button .. in this case its
> value property, should not change, it should just be "topic 1" and
> aria-expanded should be updated to indicate visibility of the associated
> panel).
> Also I do not think the focus should move from the button to the panel it
> controls, especially not when the content is inline to the button (comes
> right after the button, in content order).
> You seem to be looking for an accessible accordion pattern (or a variant
> thereof).
> Simplest example can be found here:
> http://www.3needs.org/en/testing/code/aria-expanded.html
> An accordion example can be found e.g. at:
>
> https://dequeuniversity.com/library/aria/tabpanels-accordions/sf-tabless-multiselect-accordion
> Cheers
>
>
>
> On 4/26/15, Howard Kramer < <EMAIL REMOVED> > wrote:
> > Hi Thad,
> >
> > What answer did you come up with? I didn't see it in your post. I've
> > been looking for an accessible accordion also.
> >
> > Thanks,
> > Howard
> >
> > On Sun, Apr 26, 2015 at 8:11 AM, Thad C < <EMAIL REMOVED> >
> wrote:
> >
> >> Question answered. Thanks!
> >>
> >> On Sat, Apr 25, 2015 at 9:10 PM, Thad C < <EMAIL REMOVED> >
> >> wrote:
> >>
> >> > Greetings Group,
> >> >
> >> > I am looking for examples of accessible hide/show panels. The
> >> > following Open Ajax Alliance examples seem to illustrate the
> >> > functionality I am looking for:
> >> >
> >> > http://www.oaa-accessibility.org/examplep/hideshow1/
> >> >
> >> > In this example a user activates the "Hide Topic 1" button, the
> >> associated
> >> > panel is shown, focus goes to the associated panel however the
> >> > content inside *is not* read by assistive technology
> >> >
> >> > However if a user activates the "Hide Topic 2" button, the
> >> > associated panel is shown, focus goes to the associated panel and
> >> > the content
> >> inside*
> >> > is* read by assistive technology. This is the behavior I would like
> >> > to emulate. Can anyone give me a technical explanation of why the
> >> > "Hide
> >> Topic
> >> > 2" scenario reads the content inside the panel and the "Hide Topic 1"
> >> does
> >> > not?
> >> >
> >> > If anyone has other example of this functionality it would be
> >> > greatly appreciated as well
> >> >
> >> > Thanks for your help
> >> >
> >> > >> > >> archives at http://webaim.org/discussion/archives
> >> > >>
> >
> >
> >
> > --
> > Howard Kramer
> > Conference Coordinator
> > Accessing Higher Ground
> > 303-492-8672
> > cell: 720-351-8668
> >
> > AHEAD Association of Higher Education and Disability
> > > > > > archives at http://webaim.org/discussion/archives
> > > >
>
>
> --
> Work hard. Have fun. Make history.
> > > at http://webaim.org/discussion/archives
> >
> > > > >