refs #6012 #6013 in _onKey only need to find focusable items when tab key is received since we only care about trapping navigation by tab and shift-tab
refs #6012 #6013 in _onKey only need to find focusable items when tab key is received since we only care about trapping navigation by tab and shift-tab

git-svn-id: 674a2d6b1e32e53f607eb824547723f32280967e@12766 560b804f-0ae3-0310-86f3-f6aa0a117693

redaktor/deliteful