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RE: Keyboard trap clarification for ATAG2

From: Sueann Nichols <ssnichol@us.ibm.com>
Date: Tue, 4 Oct 2011 15:24:19 -0400
To: "Richards, Jan" <jrichards@ocad.ca>
Cc: "w3c-wai-au@w3.org" <w3c-wai-au@w3.org>, w3c-wai-au-request@w3.org
Message-ID: <OFF6A6D899.64D8338F-ON8525791F.0069D9BE-8525791F.006A990F@us.ibm.com>
Jan,

Are you suggesting the keyboard key that is used is documented or that the
keyboard focus be moved to a specific or known place?    If it's the
latter, there are two separate requirements.  The first is to have key
definition  that will always respond , the second the have a documented
'known' place the focus will move to.

In WCAG 2.0 the definition seems to cover the first requirement, but ATAG
seems to be imposing a second behavior that goes beyond WCAG 2.0, for no
apparent reason.   Regardless of being in an authoring tool or any other
Web application, if there is a universal need to ensure the keyboard
doesn't get trapped.  But there does not seem to be a requirement,
especially a single A level to also add the requirement there be a
documented 'place' the keyboard focus will go to.

Can you clarify?

Sueann Nichols

Phone: (720) 396-6739 (t/l) 938-6739
ssnichol@us.ibm.com
IBM Human Ability & Accessibility Center
http://www.ibm.com/able



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  |"Richards, Jan" <jrichards@ocad.ca>                                                                                                               |
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  |"w3c-wai-au@w3.org" <w3c-wai-au@w3.org>                                                                                                           |
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  |10/04/2011 02:51 PM                                                                                                                               |
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  |RE: Keyboard trap clarification for ATAG2                                                                                                         |
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  |w3c-wai-au-request@w3.org                                                                                                                         |
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Hi Sueann,

The WCAG 2.0 text always begged the question: “how is the user, who may
think they are in a keyboard trap after trying the standard exit keys,
advised that a non-standard exit method must be employed?” I assume the
answer is that because the content author knows what their content is
doing, so they could include a tooltip explaining the situation.

In the case of an authoring tool, that works fine for the authoring tool
UI...

but it’s harder to see how the authoring tool can inject exit method advice
into content it is rendering when it can’t determine whether a keyboard
trap will be present. All it can reasonably be expected to do is provide a
universal exit method that will always work, no matter what the rendered
content being edited tries to do.

That’s why I’ve proposed in the past wording such as a “known” or
“documented” place.

Cheers,
Jan

(MR) JAN RICHARDS
PROJECT MANAGER
INCLUSIVE DESIGN RESEARCH CENTRE (IDRC)

T 416 977 6000 x3957
F 416 977 9844
E jrichards@ocad.ca

Twitter @OCAD
Facebook www.facebook.com/OCADUniversity

OCAD UNIVERSITY
100 McCaul Street, Toronto, Canada  M5T 1W1
www.ocadu.ca

From: Sueann Nichols [mailto:ssnichol@us.ibm.com]
Sent: October 4, 2011 1:42 PM
To: Treviranus, Jutta (Academic); Alex Li; Richards, Jan
Cc: w3c-wai-au@w3.org; w3c-wai-au-request@w3.org
Subject: Re: Keyboard trap clarification for ATAG2



Seems cleaner to use the WCAG wording as Alex suggested.   I would not add
the additional text Jutta is suggesting as I believe it is  redundant to
the point of the topic.   But, I do think Jan's  suggestion is also a bit
more clear.   The problem is, it does address the documentation
requirement, but that should be covered through the requirement to document
all accessibility features and keyboard definitions.

Sueann Nichols

Phone: (720) 396-6739 (t/l) 938-6739
ssnichol@us.ibm.com
IBM Human Ability & Accessibility Center
http://www.ibm.com/able


Inactive hide details for "Treviranus, Jutta (Academic)" ---10/04/2011
12:43:52 PM---Perhaps we can remove "of the page" and in"Treviranus, Jutta
(Academic)" ---10/04/2011 12:43:52 PM---Perhaps we can remove "of the page"
and insert the words after components, "including editing views


                                                                           
                                                                           
       From:   "Treviranus, Jutta (Academic)"                              
               <jtreviranus@faculty.ocad.ca>                               
                                                                           
                                                                           
       To:     Alex Li <alli@microsoft.com>                                
                                                                           
                                                                           
       Cc:     "Richards, Jan" <jrichards@ocad.ca>, "w3c-wai-au@w3.org"    
               <w3c-wai-au@w3.org>                                         
                                                                           
                                                                           
       Date:   10/04/2011 12:43 PM                                         
                                                                           
                                                                           
       Subject Re: Keyboard trap clarification for ATAG2                   
       :                                                                   
                                                                           
                                                                           
       Sent    w3c-wai-au-request@w3.org                                   
       by:                                                                 
                                                                           






Perhaps we can remove "of the page" and insert the words after components,
"including editing views that render content that may have keyboard traps"
and then use this text.

Jutta

On 2011-10-04, at 12:26 PM, Alex Li wrote:

> I don’t get why we are trying to reinvent the wheel here.  What is it
about WCAG 2.0 2.1.2 that does not cover what we need here?
> 2.1.2 No Keyboard Trap: If keyboard focus can be moved to a component of
the page using a keyboard interface, then focus can be moved away from that
component using only a keyboard interface, and, if it requires more than
unmodified arrow or tab keys or other standard exit methods, the user is
advised of the method for moving focus away. (Level A)
>
> All we need to do is to remove the term “of the page”.
>
> From: w3c-wai-au-request@w3.org [mailto:w3c-wai-au-request@w3.org] On
Behalf Of Richards, Jan
> Sent: Tuesday, October 04, 2011 9:00 AM
> To: w3c-wai-au@w3.org
> Subject: Keyboard trap clarification for ATAG2
>
> On yesterday’s call I said that I would take a shot at simplifying the
keyboard trap requirement. It still says “documented”, but it is more clear
that it only applies narrowly to editing views that render content to the
point where keyboard traps become possible:
>
> A.3.1.2 No Keyboard Traps: *Keyboard traps* are prevented as follows:
(Level A)
>     (a) In the Authoring Tool User Interface: No keyboard traps are
present; and
>     (b) In Editing-Views that Render Content: If an editing-view renders
the content being edited such that a keyboard trap might exist in the
content, then the authoring tool provides a documented keyboard method for
moving the focus away from such content.
>
> keyboard trap (UNCHANGED)
> A user interface situation in which a keyboard interface may be used to
move focus to, but not from, a user interface component or group of
components.
>
> Cheers,
> Jan
>
>
> (MR) JAN RICHARDS
> PROJECT MANAGER
> INCLUSIVE DESIGN RESEARCH CENTRE (IDRC)
>
> T 416 977 6000 x3957
> F 416 977 9844
> E jrichards@ocad.ca
>
> Twitter @OCAD
> Facebook www.facebook.com/OCADUniversity
>
> OCAD UNIVERSITY
> 100 McCaul Street, Toronto, Canada  M5T 1W1
> www.ocadu.ca






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Received on Tuesday, 4 October 2011 19:43:02 GMT

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