Review Request: Activities Dataengine: avoid calling KActivities::Controller::listActivities() unnecessarily

[Commit Hook]

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This review has been submitted with commit 480db607b4ec63108e18738eb2dfa51169dcd865 by Luiz Romário Santana Rios to branch master.

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On Dec. 16, 2011, 12:25 a.m., Romário Rios wrote:
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> (Updated Dec. 16, 2011, 12:25 a.m.)
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> Review request for Plasma.
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> Description
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> Avoid calling listActivities to get the list of running activities everytime by getting it once, storing it in a private member and modifying this member as activities come and go.
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> Diffs
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>   plasma/generic/dataengines/activities/activityengine.h cbbf94c 
>   plasma/generic/dataengines/activities/activityengine.cpp 9436c34 
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> Diff: http://git.reviewboard.kde.org/r/103358/diff/diff
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> Testing
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> Tested it now, removed some activities, added some more, stopped another bunch, and it seems to work just fine as long as I tested.
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> Thanks,
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> Romário Rios
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