Review Request 121885: Properly check for systray being available

[David Edmundson]

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src/platformtheme/kdeplatformsystemtrayicon.cpp
<https://git.reviewboard.kde.org/r/121885/#comment50966>

    the statusnotifierwatcher is a kded module, which means if another kded module tries to create an SNI (and at least one does) we're going to deadlock I think?


- David Edmundson


On Jan. 6, 2015, 6:16 p.m., Martin Klapetek wrote:
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> https://git.reviewboard.kde.org/r/121885/
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> (Updated Jan. 6, 2015, 6:16 p.m.)
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> 
> Review request for KDE Frameworks.
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> Bugs: 339707
>     https://bugs.kde.org/show_bug.cgi?id=339707
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> Repository: frameworkintegration
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> Description
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> The "org.kde.StatusNotifierWatcher" is just a watcher/helper, not the actual systray object, that's "org.kde.StatusNotifierHost-$PID". Because Plasma appends the PID, we cannot check directly for it being present on the bus, so we check the org.kde.StatusNotifierWatcher.IsStatusNotifierHostRegistered property that's meant to be used for this.
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> Plus QSystemTrayIcon::isSystemTrayAvailable() is actually returning always true, because the Watcher is in kded and is /always/ present.
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> This also fixes many apps with KSNI crashing on plasma exit, bug 339707 (though I believe this is not the direct cause for that bug)
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> Diffs
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>   src/platformtheme/kdeplatformsystemtrayicon.cpp b5e207c 
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> Diff: https://git.reviewboard.kde.org/r/121885/diff/
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> Testing
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> Things do not crash anymore and the ::isSystemTrayAvailable() now returns correct value.
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> Thanks,
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> Martin Klapetek
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>

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