D27876: KRearrangeColumnsProxyModel: reset in setSourceColumns()

[David Faure]

dfaure created this revision.
dfaure added reviewers: kossebau, vkrause, davidedmundson, ahiemstra.
Herald added a project: Frameworks.
Herald added a subscriber: kde-frameworks-devel.
dfaure requested review of this revision.

REVISION SUMMARY
  Otherwise the view won't update, when doing this dynamically.
  With a test program.

TEST PLAN
  See test program

REPOSITORY
  R275 KItemModels

BRANCH
  master

REVISION DETAIL
  https://phabricator.kde.org/D27876

AFFECTED FILES
  src/core/krearrangecolumnsproxymodel.cpp
  tests/CMakeLists.txt
  tests/rearrangecolumns.cpp

To: dfaure, kossebau, vkrause, davidedmundson, ahiemstra
Cc: kde-frameworks-devel, LeGast00n, cblack, GB_2, michaelh, ngraham, bruns
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