D9750: ExpandingWidgetModel: find the right-most column based on location

[Milian Wolff]

mwolff added a comment.


  I'll push it then

REPOSITORY
  R39 KTextEditor

REVISION DETAIL
  https://phabricator.kde.org/D9750

To: mwolff, #kate
Cc: cullmann, kfunk, #frameworks, michaelh, kevinapavew, ngraham, demsking, 
sars, dhaumann