Reported by jteh on 2011-05-10 22:31 aria-sort "indicates if items in a table or grid are sorted in ascending or descending order" and is specified on table/grid headers. NVDA needs to support this concept in NVDAObjects and then report this via speech and braille.
This also needs to be supported for virtual buffers, but this will be done separately.
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Comment 2 by mdcurran on 2011-05-16 04:57
Announcement of aria-sort for MSHTML and Gecko virtualBuffers and NVDAObjects has been implemented in 5d31a28. However, this is only announcement on query/focus/caret/review etc, it does not announce when it changes. We need Gecko to fire iaatributeChange when sort changes, and for MSHTML, we probably need to register a propchange event at least for the focus, though what to actually call I'm not sure, probably just event_stateChange.