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systray: Clean up leaking systrays

Marco Martin requested to merge work/mart/cleanupSystray into master
  • Systray: Clean up leaking systrays

Since removing a systray container didn't use to remove the internal systray containment and all its applets, after a while especially if default panels are added and removed often, the applet config file becomes full of orphaned systray containments that just take up resources and cause misbehaviors

This destroys on startup all org.kde.plasma.private.systray that are not associated with a particular org.kde.plasma.systray

here went from an appletsrc config file of almost 7000 lines to under 1000

  • systray: destroy the inner systray when the container is destroyed

When SystemTrayContainer is destroyed and removed form the config, the inner (actual) systray was left lingering there, ending up polluting the configuration file and instroducing slowdowns and misbehaviors as all the systray applets got instantiated and are "working"

this gets rid of the inner systray on delete CCBUG:472937 CCBUG:404641

Edited by Marco Martin

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