713010 - Element marked with ARIA role='button' and aria-pressed attribute not exposed as a toggle button

Status: RESOLVED WORKSFORME

(Core :: Disability Access APIs, defect)

Description

[Joseph Scheuhammer (:clown)]

User Agent: Mozilla/5.0 (Macintosh; U; Intel Mac OS X 10.7; en; rv:1.9.2.24) Gecko/20111113 Camino/2.1 (like Firefox/3.6.24)
Build ID: 20111113195207

Steps to reproduce:

Viewed the a11y tree for sample widgets (see link below) to see what was exposed for a <label role="button" aria-pressed="false" ..>.  Run on Fedora-16, with FF 8.0 and used Accerciser 3.3.1 to inspect the tree.

The full markup is here -- look for the "Shuffle" toggle button:
http://access.aol.com/aegis/#goto_button


Actual results:

The element was exposed as a push button (AT-SPI ROLE_PUSH_BUTTON).


Expected results:

The element should be exposed as a toggle button (AT-SPI ROLE_TOGGLE_BUTTON).

See:
- ARIA spec: http://www.w3.org/WAI/PF/aria/states_and_properties#aria-pressed
- ARIA implementation guide: http://www.w3.org/WAI/PF/aria-implementation/#mapping_state-property, specifically the row for aria-pressed.

Comment 1

[alexander :surkov (:asurkov)]

"Shuffle" is exposed as a push button in your example because there's no aria-pressed attribute on it. If you click it then it's exposed as toggle button, second click (uncheck it) keeps it as toggle button. Do you have different observations?

Comment 2

[Joseph Scheuhammer (:clown)]

(In reply to alexander :surkov from comment #1)
> ...
> Do you have different observations?

Well, now that I take a closer look, yes and no, but mostly yes.

I can confirm that the aria markup changes as one interacts with the button.  As you noted, the aria-pressed attribute is added when the button is clicked.  I have also checked keyboard interaction and when the 'Shuffle' button is activated with the space bar, aria-pressed is added in that case too.

The "no" part:  I'm using Accerciser, and the info it displays in its "Interface Viewer" does not change -- it still says "push button" after the aria-pressed is added.  It should say "toggle button".  Now, the fault might lie with accerciser or with FF.  I can't tell since I can't look directly at the AT-SPI layer.

To sort-of double check, I looked at the page on WinXP, using accprobe.  There, the the IA2 role definitely changes from push to toggle button upon interaction.

So:  either this is a bug in FF/Linux/GNOME, or a bug in Accerciser.

Comment 3

[Joseph Scheuhammer (:clown)]

Followup:  tbsaund suggested looking at the a11y tree as displayed by the DOM Inspector add-on.  I did so on FF/Linux/GNOME, and it shows the switch from push button to toggle.

Also, if accerciser is quit and restart after the aria-pressed is added, it shows a toggle button for that element.

This looks like an accerciser issue; I'll follow up with its developers.

Comment 4

[David Bolter [:davidb] (NeedInfo me for attention)]

Thanks for following this through Joseph!

Closing as WORKSFORME as per comment 3.

Comment 5

[alexander :surkov (:asurkov)]

(In reply to Joseph Scheuhammer from comment #3)
> Followup:  tbsaund suggested looking at the a11y tree as displayed by the
> DOM Inspector add-on.  I did so on FF/Linux/GNOME, and it shows the switch
> from push button to toggle.
> 
> Also, if accerciser is quit and restart after the aria-pressed is added, it
> shows a toggle button for that element.
> 
> This looks like an accerciser issue; I'll follow up with its developers.

afaik accerciser doesn't update the accessible tree until you click refresh button, what's happen here is we destroy old accessible and create new one.