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5.5.1. State and Property Mapping Table (http://www.w3.org/WAI/PF/aria-implementation/#mapping_state-property_table): aria-checked="false" (state) Expose object attribute checkable:true aria-checked is undefined (state) Not mapped 6.2. Author Errors http://www.w3.org/WAI/PF/aria-implementation/#document-handling_author-errors: If a WAI-ARIA property contains an unknown or disallowed value, the user agent SHOULD expose to platform accessibility APIs as follows: 1) When exposing as an object attribute, expose the unknown value — do not vet it against possible values. 2) When exposing as a platform API Boolean state, treat "", "undefined" or no attribute present as false. Treat any other value as true. 3) Otherwise, ignore the value and treat the property as not present Technically aria-checked is exposed as "checkable" object attribute on IA2 and ATK what requires UA to expose unknown value per 1) (bw, it's not clear what is unknown value because a property can contain "unknown or disallowed value"). Role mapping requires the role="checkbox" to be exposed with "checkable:true" attribute (per 5.4.1. Role Mapping Table) so we run into collision if aria-checked="wrongvalue" is specified. It sounds that "checkable:true" should be treated as API Boolean state. So true value is "checkable:true", false value is no "checkable" attribute. I think the wording should be changed to make it clear. Thanks. Alex.
Andi, what does "aria-checked is undefined (state)" mean? Can you give an example in markup?
Emailing Alexander (who is on vacation ATM).
From May 24th, 2012, UAI TF Meeting: DB: what does aria-checked is undefined mean? AS: it means it's a role such as checkbox or radiobutton but aria-checked is not specified DB: FF would default to "false" if it's not specified ... for aria-checked undefined, we have "not mapped" all the way across ... FF & IE would map as if aria-checked="false" but wouldn't expose object attribute ... would clear the states but not expose object attributes AS: leaves it as "not mapped" for UIA CS: think it is "not mapped" for UIA assign bug to Cynthia
(In reply to comment #3) > From May 24th, 2012, UAI TF Meeting: > > DB: what does aria-checked is undefined mean? > > AS: it means it's a role such as checkbox or radiobutton but aria-checked is > not specified > > DB: FF would default to "false" if it's not specified > ... for aria-checked undefined, we have "not mapped" all the way across > ... FF & IE would map as if aria-checked="false" but wouldn't expose object > attribute > ... would clear the states but not expose object attributes > > AS: leaves it as "not mapped" for UIA > > CS: think it is "not mapped" for UIA > > assign bug to Cynthia Implement the Toggle pattern and set Toggle.ToggleState to Off(0) So, yes it is mapped