D9931: Remember expanded status of tree view in statistics main window

[Hartmut Riesenbeck]

hriesenbeck created this revision.
hriesenbeck added a reviewer: KDE Edu.
Restricted Application added a project: KDE Edu.
hriesenbeck requested review of this revision.

REVISION SUMMARY
  The collapsed tree view items of LessonStatisticsView were safed in
  parleys config file. With this stored lesson names the expanded status
  of the tree items will be restored when StatisticsMainWindow is
  displayed next time.

REPOSITORY
  R340 Parley

BRANCH
  remember_expanded_status_for_review

REVISION DETAIL
  https://phabricator.kde.org/D9931

AFFECTED FILES
  src/settings/documentsettings.kcfg
  src/statistics/lessonstatisticsview.cpp
  src/statistics/lessonstatisticsview.h
  src/statistics/statisticsmainwindow.cpp
  src/statistics/statisticsmodel.cpp
  src/statistics/statisticsmodel.h

To: hriesenbeck, #kde_edu
Cc: narvaez, apol
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