Review Request 120179: return correct screen() even when we are still starting up

[Marco Martin]

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https://git.reviewboard.kde.org/r/120179/
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Review request for Plasma.


Repository: plasma-workspace


Description
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If screenForContainment() depends on the existence of the view instance, while the corona is starting up, screen() will return -1 for a while, changing the behavior depending where is called.

this patch makes screen() return a stable final value, even before any view has been created.
this is (also) needed for correctly keeping track of what containments are still loading, what finished.


Diffs
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  shell/shellcorona.cpp 081a1ad 

Diff: https://git.reviewboard.kde.org/r/120179/diff/


Testing
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Thanks,

Marco Martin

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