Re: Question about "Implicit value for Role"

The original question:
> If there is data in the value for this field for a given role (e.g., 
"select") and another role references that role as a superclass, should 
the new "child" role inherit those implicit values automatically?
Example provided by James Craig:
> role=alert has an implicit value of “assertive” so the author just 
> needs to write:
>     role="alert"
> Not:
>     role="alert" aria-live="assertive"

I still do not understand the original question given the example. I 
didn't even realize that there was a concept of value associated with ARIA 
roles., e.g., Alert has a value of assertive? Isn't it the live property 
that has the value, not the assertive role?

The original question is asking about the value of a field.

Matt King
IBM Senior Technical Staff Member
I/T Chief Accessibility Strategist
IBM BT/CIO - Global Workforce and Web Process Enablement 
Phone: (503) 578-2329, Tie line: 731-7398
mattking@us.ibm.com



From:   James Craig <jcraig@apple.com>
To:     Shane McCarron <shane@aptest.com>, W3C WAI Protocols & Formats 
<public-pfwg@w3.org>, 
Date:   03/23/2015 10:26 PM
Subject:        Re: Question about "Implicit value for Role"



It’s about authoring convenience. For example, role=alert has an implicit 
value of “assertive” so the author just needs to write:

    role="alert"

Not:

    role="alert" aria-live="assertive"

We document the "implicit values for roles," otherwise the default value 
would be the default for the attribute, which is "off" for aria-live.



On Mar 23, 2015, at 4:40 PM, Shane McCarron <shane@aptest.com> wrote:

Actually, no.  I don't even know what "Implicit value for Role" means 
really.  I can guess, but I would have assumed it was only relevant in a 
host language context.

On Mon, Mar 23, 2015 at 3:47 PM, Matthew King <mattking@us.ibm.com> wrote:
Can you provide an example?

Matt King
IBM Senior Technical Staff Member
I/T Chief Accessibility Strategist
IBM BT/CIO - Global Workforce and Web Process Enablement 
Phone: (503) 578-2329, Tie line: 731-7398 
mattking@us.ibm.com



From:        Shane McCarron <shane@aptest.com>
To:        "W3C WAI Protocols & Formats" <public-pfwg@w3.org>, 
Date:        03/22/2015 05:24 PM
Subject:        Question about "Implicit value for Role"
Sent by:        ahby@aptest.com




If there is data in the value for this field for a given role (e.g., 
"select") and another role references that role as a superclass, should 
the new "child" role inherit those implicit values automatically?

-- 
Shane McCarron
Managing Director, Applied Testing and Technology, Inc.




-- 
Shane McCarron
Managing Director, Applied Testing and Technology, Inc.