Review Request 120025: Have KStandardAction::create(...) call KActionCollection::setDefaultShortcuts()

[Friedrich W. H. Kossebau]

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Review request for KDE Frameworks.


Repository: kconfigwidgets


Description
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As e.g. reported in https://bugs.kde.org/show_bug.cgi?id=338222 ("False positive critical warnings for KStandardActions") currently KXMLGUIFactoryPrivate::saveDefaultActionProperties complains about lots of actions that have been created properly via KStandardActions with a KActionCollection as parent. Just grep the log of your favourite XMLGUI-based KF5-ported program to see yourself.

I have not yet completely grasped the concept of the default shortcuts and why they are set only explicitely via KActionCollection::setDefaultShortcuts. But to me it makes some sense to have this automatically called for all standardactions which are created directly with a KActionCollection as parent.
I decided not to change KActionCollection::addAction because I had even less idea what all might be affected by that.

So this is what this patch does:
* add a call to KActionCollection::setDefaultShortcuts if there is a standard shortcut (via QMetaObject::invokeMethod, like done for KActionCollection::addAction)
* also move code which only should be done in case of a created action into one, same branch

Needs https://git.reviewboard.kde.org/r/120024/ to make KActionCollection::setDefaultShortcuts() invokable.


Diffs
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  src/kstandardaction.cpp a18527b 

Diff: https://git.reviewboard.kde.org/r/120025/diff/


Testing
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Thanks,

Friedrich W. H. Kossebau

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