Review Request 118649: Work around null return value of QApplication::clipboard()->mimeData() on Wayland

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This review has been submitted with commit cde87d91c2c9865268004e2d77deebad9d9c833e by Frank Reininghaus to branch master.

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On June 11, 2014, 8:21 a.m., Frank Reininghaus wrote:
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> https://git.reviewboard.kde.org/r/118649/
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> (Updated June 11, 2014, 8:21 a.m.)
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> Review request for Dolphin.
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> Bugs: 335053
>     http://bugs.kde.org/show_bug.cgi?id=335053
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> Repository: kde-baseapps
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> Description
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> This is a follow-up to https://git.reviewboard.kde.org/r/118450/
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> It seems that Qt's clipboard support is broken on Wayland - according to the bug report, the return value of QApplication::clipboard()->mimeData() on Wayland.
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> This patch adds safety checks to work around this problem and ensure that Dolphin does not crash on startup.
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> Even though only frameworks is affected AFAIK, I still think that it makes sense to have this in master as well because it simplifies the code a bit and makes "Paste into folder" work for non-file data.
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> Diffs
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>   dolphin/src/dolphincontextmenu.cpp f295de7 
>   dolphin/src/kitemviews/private/kfileitemclipboard.cpp faace2a 
>   dolphin/src/panels/folders/treeviewcontextmenu.cpp fa8844d 
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> Diff: https://git.reviewboard.kde.org/r/118649/diff/
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> Testing
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> I cannot test if the patch fixes the Wayland crash, but I checked that updating the "cut" state of items in the view still works, and that the "Paste" action is updated and works as expected in the context menus.
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> Thanks,
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> Frank Reininghaus
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