Review Request 118137: Do not overwrite event mask in WindowThumbnailItem

[Martin Gräßlin]

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https://git.reviewboard.kde.org/r/118137/
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Review request for Plasma.


Bugs: 331956
    http://bugs.kde.org/show_bug.cgi?id=331956


Repository: plasma-framework


Description
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Do not overwrite event mask in WindowThumbnailItem

The WindowThumbnail needs XCB_EVENT_MASK_STRUCTURE_NOTIFY on the window.
For this it needs to change the window attributes. But it needs to keep
the existing event mask to not break other code. Also it cannot remove
the event mask again, as there is no chance to know whether another
component requires STRUCTURE_NOTIFY.

This fixes the not updating items in the tasks applet as the event mask
needed for KWindowSystem got overwritten.

BUG: 331956


Diffs
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  src/declarativeimports/core/windowthumbnail.cpp c91d1896553f6eecc6828497724d6b119900e40e 

Diff: https://git.reviewboard.kde.org/r/118137/diff/


Testing
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Thanks,

Martin Gräßlin

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