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

Joanmarie Diggs jdiggs at igalia.com
Tue Feb 23 19:42:02 UTC 2016


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


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