D9784: [ConfigModule] Re-use QML context and engine if any

[Kai Uwe Broulik]

broulik created this revision.
broulik added a reviewer: Plasma.
Restricted Application added projects: Plasma, Frameworks.
Restricted Application added subscribers: Frameworks, plasma-devel.
broulik requested review of this revision.

REVISION SUMMARY
  In case the ConfigModule is created within a QML context, re-use it and its engine instead of creating a shared QML object that might use a different engine.
  
  CCBUG: 388766

TEST PLAN
  Needs a followup patch in Plasma to set the context

REPOSITORY
  R296 KDeclarative

REVISION DETAIL
  https://phabricator.kde.org/D9784

AFFECTED FILES
  src/quickaddons/configmodule.cpp

To: broulik, #plasma
Cc: plasma-devel, #frameworks, ZrenBot, progwolff, lesliezhai, ali-mohamed, jensreuterberg, abetts, sebas, apol, mart
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