Context menus of new Address Book are not keyboard accessible in any way, which in turn makes a number of actions like Export and Default startup directory on address books or Write and Print on contacts inaccessible.

STR (seen on 98.0a1 (2022-02-02) (64-bit))

1. In new Address Book, select Personal Address Book
2. Press the menu key or Shift+F10 (Windows/Linux); the Mac equivalent might be the Cmd key

Actual

• nothing
• Many contextual actions are completely inaccessible for keyboard users

Expected (see classic AB in TB91)

• open the AB's context menu to provide keyboard access to contextual functions
• ensure all actions are keyboard accessible

Implementation

This should be due to a wrong design which doesn't use contextmenu event to cover both mouse and keyboard access.

This was already at the top of bug 1717632, but I think it is ok to move it here since it was a bit of an outlier, so I just added a note to the first comment.

It does use the contextmenu event, but bails out early because the event target is the list, not the row.

Pushed by alessandro@thunderbird.net:
https://hg.mozilla.org/comm-central/rev/a910d3d30ad7
Make Address Book context menus keyboard accessible. r=aleca