Hi all,
One problem here is that the term "active" is somewhat ambiguous,
especially given aria-activedescendant.
Joanie, for a container which uses aria-activedescendant, do you expect
that ATK_STATE_ACTIVE would be exposed on the element which is currently
the active descendant? That also fits the definition: "the active
subelement within a container or table". I believe this is how
IA2_STATE_ACTIVE is currently being used.
If you do expect this would be the case, we have a problem because there
are apparently cases where aria-current and aria-activedescendant can
apply to different descendants:
https://lists.w3.org/Archives/Public/public-pfwg/2014Nov/0287.html
On the other hand, I can totally see how this definition also fits
aria-current. That ambiguity is concerning.
aria-current seems a lot like "selected" to me. However, I understand
there are cases where selected and current conflict; e.g. the tree
example in the spec.
Alex, do we know if existing ATs are using IA2_STATE_ACTIVE? NVDA isn't
at this stage.
Jamie
On 1/09/2015 6:29 AM, Joanmarie Diggs wrote:
Hi Alex.
Up through ATK 2.14 [1], the definition of ATK_STATE_ACTIVE was:
Indicates a window is currently the active window, or is an active
subelement within a container or table
That struck us as odd. Can a window be "an active subelement within a
container or table"? We figured that the part after the comma referred
to objects which were not windows.
In order to clarify that, and also distinguish it from FOCUSED and
SELECTED, we updated the docs in ATK 2.16 [2]:
Indicates a window is currently the active window, or an object is
the active subelement within a container or table. ATK_STATE_ACTIVE
should not be used for objects which have ATK_STATE_FOCUSABLE or
ATK_STATE_SELECTABLE: Those objects should use ATK_STATE_FOCUSED
and ATK_STATE_SELECTED respectively. ATK_STATE_ACTIVE is a means to
indicate that an object which is not focusable and not selectable
is the currently-active item within its parent container.
Being the active subelement within a container or table does sound like
aria-current (doesn't it?).
Lastly, note that we do NOT expect you to do any validation, and there
may be cases where an author has a current object which happens to be
focusable. That's OK. :) We were more concerned about desktop toolkits
getting the states wrong.
--joanie
[1] https://developer.gnome.org/atk/2.14/atk-AtkState.html#AtkStateType
[2] https://developer.gnome.org/atk/2.16/atk-AtkState.html#AtkStateType
On 08/31/2015 03:54 PM, Alexander Surkov wrote:
Hi, Joseph. I agree on 'current' object attribute, not sure ACTIVE_STATE
is a proper mapping for both IA2 and ATK (ATK defines it as "Indicates a
window is currently the active window"). Why do you think it's worth to
set up the state?
Thanks.
Alex.
On Mon, Aug 31, 2015 at 3:45 PM, Joseph Scheuhammer <[email protected]
<mailto:[email protected]>> wrote:
Hi Alex,
I have finalized the ATK/AT-SPI mappings of aria-current [1], and
based on that, have a proposal for the MSAA+IA2 mappings.
However, I've been following the related mozilla bug [2], and
likely, you will have thoughts. Has there been any progress with
respect to FF/IA2/aria-current?
For what it's worth, it appears that AXAPI will be adding an
AXCurrent property whose value is that given by aria-current, that
is, one of page, step, location, date, time, true, or false [3].
Thanks.
[1] http://rawgit.com/w3c/aria/master/core-aam/core-aam.html#ariaCurrent
[2] https://bugzilla.mozilla.org/show_bug.cgi?id=1104947
[3] https://bugs.webkit.org/attachment.cgi?id=260300&action=diff
--
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