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Re: [Accessibility-ia2] Mapping of aria-errormessage for ATK/AT-SPI2 and IA2

From: Richard Schwerdtfeger <richschwer@gmail.com>
Date: Wed, 24 Feb 2016 17:33:08 -0600
Cc: James Teh <jamie@nvaccess.org>, IA2 List <Accessibility-ia2@lists.linux-foundation.org>, ARIA Working Group <public-aria@w3.org>
Message-Id: <D8C93E4D-5159-4DA5-B1E4-160B4484ECBF@gmail.com>
To: Joanmarie Diggs <jdiggs@igalia.com>
Error messages may have additional content in there that needs greater semantic structure. For example, what if the error message had a link to a online help area about the topic. Converting it to a string would not work.

Rich
> On Feb 23, 2016, at 5:20 PM, Joanmarie Diggs <jdiggs@igalia.com> wrote:
> 
> Hey Jamie.
> 
> Yeah, we have a description property which is a string. Right now, I
> don't have a strong feeling either way about whether aria-errormessage's
> text belongs as part of that value. So if you think it should be there
> in addition to exposed via the relationship pair, I don't mind.
> 
> --joanie
> 
> On 02/23/2016 06:03 PM, James Teh wrote:
>> Sounds great. I'm happy with this mapping.
>> 
>> Would this message be included in the concatenated description string
>> for an object? I'm not sure if ATK has this, but in MSAA (and thus IA2),
>> you can call the accDescription property and it provides the description
>> as a string. Right now, that would include the text of anything listed
>> in aria-describedby. I think it *should* include the error message myself.
>> 
>> Jamie
>> 
>> On 24/02/2016 5:42 AM, Joanmarie Diggs wrote:
>>> Hey all.
>>> 
>>> We need to map aria-errormessage on the various platforms, including
>>> ATK/AT-SPI2 and IA2. Given the ongoing desire for cross-platform
>>> homogeneity, I'll toss out what I was thinking for my platform for
>>> consideration by IA2 folks.
>>> 
>>> Proposal: Connect the message to the element with the error via the
>>> RELATION_DESCRIBED_BY/RELATION_DESCRIPTION_FOR relation pair and expose
>>> "errormessage" as an object attribute.
>>> 
>>> Rationale:
>>> 
>>> 1. An error message provides descriptive information about an object.
>>> 
>>> 2. Exposure via a relation eliminates the need to tree dive to find
>>>    the error.
>>> 
>>> 3. Accessible relations can have multiple targets, so this exposure
>>>    does not stomp on a non-error description while at the same time
>>>    eliminating the need for each platform to create a new relation
>>>    type(s).
>>> 
>>> 4. The object attribute is needed to identify which target (if any)
>>>    is an error message.
>>> 
>>> Thoughts?
>>> --joanie
>>> _______________________________________________
>>> Accessibility-ia2 mailing list
>>> Accessibility-ia2@lists.linuxfoundation.org
>>> https://lists.linuxfoundation.org/mailman/listinfo/accessibility-ia2
>> 
> 
> 
Received on Wednesday, 24 February 2016 23:33:38 UTC

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