Bug 30842 – Support ARIA "tab" roles

• Status: RESOLVED
• Resolution: FIXED
• Component: Accessibility

[chris fleizach]

tab, tabpanel and tablist

[chris fleizach]

tab needs to support AXValue (whether its selected... which can be either if an item in its associated tab panel has focus, or it has aria-selected)

a tab can also be selected if KB focus is in one of its aria-controls elements

tablist needs to support AXValue = selected tab, AXContents (children that are not tabs) and AXTabs (children that are tabs)

tabpanel needs to be an AXGroup with a subrole, like the other aria landmarks

make sure this works
http://codetalks.org/source/widgets/tabpanel/tabpanel1.html

[chris fleizach]

Created attachment 42300 [details]
patch

Beth, I've made these tab roles like we talked about
tab = AXRadioButton
tablist = AXTabGroup
tabpanel = AXGroup:AXTabPanel

I also mirrored the other Mac accessibility things relating to tabs, and tried to follow ARIA spec.

I re-organized some code so that it would be easy to get all Elements from a specific attribute. 

As a note, when i ran update-webkit-strings, it removed two accessibility strings. i guess those are no longer used...

[chris fleizach]

Beth, can you review this one. One of the ARIA things we talked about

[Beth Dakin]

Comment on attachment 42300 [details]
patch

Nice! r=me

[chris fleizach]

http://trac.webkit.org/changeset/50409