Review Request 124637: ContextMenuMutator - fix - remove (manually created) submenu when parent menu is hid

[Maciej Poleski]

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Review request for KDevelop.


Repository: kdev-clang


Description
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ContextMenuMutator - remove manually created submenu when parent menu is hid

It looks like context menu is long living. But every new opening populates with (potentially) new "Refactorings" submenu.
This fix introduces event filter watching for hide events on context menu (but only if submenu was created). hide event -> `submenu->deleteLater()`


Diffs
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  refactoring/contextmenumutator.h PRE-CREATION 
  refactoring/contextmenumutator.cpp PRE-CREATION 

Diff: https://git.reviewboard.kde.org/r/124637/diff/


Testing
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Manual testing.


Thanks,

Maciej Poleski

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