On Monday 20 October 2008, Guillaume Pothier wrote: > 2008/10/20 Aaron J. Seigo <[EMAIL PROTECTED]>: > > On Monday 20 October 2008, Guillaume Pothier wrote: > >> Plasma::Corona::self()->viewportGeometry(id), > >> we're done (we need that singleton as popupPosition can't have a ref > >> to the corona, at least at first sight). > > > > a singleton isn't really possible without some nasty trickery (e.g. > > create an object of the subclass, register it with a static method in > > Corona ... ugh). > > Kephal does something like that, if I understand correctly, in the > abstract Screens class. The constructor of Screen initializes the > static field, and as a single instance of the concrete subclass is > ever created, there is no problem. Or do I miss something?
no, it just means that you have to be sure to create the subclass first in your application which makes it not-really-a-singleton ... it is doable. just rather see if there's a cleaner way to do it (btw, we used to do exactly that in very early versions of plasma =) -- Aaron J. Seigo humru othro a kohnu se GPG Fingerprint: 8B8B 2209 0C6F 7C47 B1EA EE75 D6B7 2EB1 A7F1 DB43 KDE core developer sponsored by Qt Software
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