D17542: Reset parentItem when mainItem changes

[Marco Martin]

mart accepted this revision.
mart added a comment.
This revision is now accepted and ready to land.


  sometimes in the past i had problems about setting parentitem of an item to nullptr, due to all the scenegraph nodes of the item being destroyed and recreated...
  somewhere else to do something like that i did have a dummy qquickitem invisible and reparented stuff to that instead of nullptr
  
  this looks cleaner, so i would say go for it and if will cause problems, then go for the above workaround

REPOSITORY
  R242 Plasma Framework (Library)

REVISION DETAIL
  https://phabricator.kde.org/D17542

To: broulik, #plasma, mart
Cc: davidedmundson, kde-frameworks-devel, michaelh, ngraham, bruns
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