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Re: CFC: Change of Content SC

From: David MacDonald <david100@sympatico.ca>
Date: Tue, 30 May 2017 17:21:54 -0400
Message-ID: <CAAdDpDb2XfhyErBw=1SMTJ_DrX_qgdCmTZR+EBJhf-j3UayHFw@mail.gmail.com>
To: Detlev Fischer <detlev.fischer@testkreis.de>
Cc: Andrew Kirkpatrick <akirkpat@adobe.com>, WCAG <w3c-wai-gl@w3.org>
> What this new content is missing is a corresponding role and is covered
by SC 4.1.2 even now.

4.1.2 covers interactive components. This is wider, covering all content,
and simpler at the same time. Requiring a summary message like the examples
in the Understanding. The Understanding can also explain those things above
the current requirements of 4.1.2

> Exception #1 to proposed SC  suggests the new content could be associated
with the trigger element. This SC would be triggered even when an error
message is placed next to a failed field and is associated say via
aria-describedby and focus is placed on the field when the form is
presented with errors...
because the error message is not associated with the submit button.

That is a programmatic association and is sufficient

> I am assuming this form has no global  message above the form like 3 errors
present / form submission failed.

The primary technique would be for an announcement that there are "x errors
on the page"

> A global message needs role=alert or aria-live=assertive.

Yes that would be a technique, however I would not recommend "assertive"
unless a house is burning down. better to use polite as per the aria spec

> Change in count of cart or  remaining characters in a text area is updated
in an element that needs role=status with aria-live=polite.

Yes

Cheers,
David MacDonald



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On Tue, May 30, 2017 at 5:10 PM, David MacDonald <david100@sympatico.ca>
wrote:

> >  ?? Do we have techniques for doing this?
>
> Yes, in all major technologies.
>
> >> For example in a game or simulation - there will continual changes of
> content.   There is no exception for this  — so is there a technique that
> should be used in these situations  to indicate that there are continuously
> changing content?
>
> We can place a note on the Draft: "The working group is seeking input to
> account for situations where there is frequent, or constant updating."
>
> >> Or is this ONLY supposed to apply to content that changes in response
> to a user action.
>
> It applies to all changes to the content currently. It could be narrowed
> for user initiated changes but the general feeling is that it should
> include all changes to content that are part of the primary purpose of the
> page.
>
> >> If you DON’T mean changes due to user action — then for dynamic content
> (constantly changing) content is a simple notice someplace that says that
> the page has continually changing content sufficient?  or would the page
> need to stream a constant flow of notifications through some mechanism that
> is supported by AT?
>
> We could provide something like that. However, I would like to hear what
> the public has to say. There was an exception for over 5 notifications a
> minute, but it was dropped. Your language might be better. We want to
> ensure however there is not an exemption for things like chat widgets,
> where a ping that a comment was posted is key to having a fluent
> conversation. This is the usual behavipur anyway of chat programs.
>
>
> Cheers,
> David MacDonald
>
>
>
> *Can**Adapt* *Solutions Inc.*
>
> Tel:  613.235.4902 <(613)%20235-4902>
>
> LinkedIn
> <http://www.linkedin.com/in/davidmacdonald100>
>
> twitter.com/davidmacd
>
> GitHub <https://github.com/DavidMacDonald>
>
> www.Can-Adapt.com <http://www.can-adapt.com/>
>
>
>
> *  Adapting the web to all users*
> *            Including those with disabilities*
>
> If you are not the intended recipient, please review our privacy policy
> <http://www.davidmacd.com/disclaimer.html>
>
> On Tue, May 30, 2017 at 4:39 PM, Detlev Fischer <
> detlev.fischer@testkreis.de> wrote:
>
>> +1
>>
>>
>
Received on Tuesday, 30 May 2017 21:22:30 UTC

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