Report position and set size for gridcells in treegrids #16504
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Link to issue number:
Fixes #15818
Summary of the issue:
When navigating an ARIA treegrid's cells (as opposed to its rows), the position in set and set size are not supported.
Description of user facing changes
Position information are now reported.
Description of development approach
Modified
Ia2Web._get_positionInfo
to return the closest ancestor treeitem's position information if the current focus is a gridcell.Testing strategy:
Manually tested with the APG Treegrid Email Inbox Example.
Known issues with pull request:
Level information is reported at the end of speech output when navigating by cell, unlike when navigating by row, where it is reported first if the level has changed.
Code Review Checklist: