[Differential] [Request, 10 lines] D1799: Add missing hasChildren() implementation.

[hein (Eike Hein)]

hein created this revision.
hein added a reviewer: Plasma.
hein added a subscriber: plasma-devel.
Restricted Application added a project: Plasma.

REVISION SUMMARY
  QAbstractProxyModel forwards hasChildren() to the source model, which
  will return a wrong value for our tree-restructuring model. Current
  views/proxies don't call hasChildren(), which is how this oversight
  happened, but implementing it improves model hygiene - could blow up
  in the future otherwise.

REPOSITORY
  rPLASMAWORKSPACE Plasma Workspace

BRANCH
  master

REVISION DETAIL
  https://phabricator.kde.org/D1799

AFFECTED FILES
  libtaskmanager/taskgroupingproxymodel.cpp
  libtaskmanager/taskgroupingproxymodel.h

EMAIL PREFERENCES
  https://phabricator.kde.org/settings/panel/emailpreferences/

To: hein, #plasma
Cc: plasma-devel, sebas
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