Review Request: Add external loader support to Plasma::Applet, Plasma::DataEngine, Plasma::Service

[Ryan Rix]

> On 2010-07-10 08:00:51, Aaron Seigo wrote:
> > trunk/KDE/kdelibs/plasma/pluginloader.h, lines 31-41
> > <http://reviewboard.kde.org/r/4554/diff/1/?file=30585#file30585line31>
> >
> >     a few issues here: the name of the file and the name of the class don't match. it's also missing the PLASMA_EXPORT macro which is why you can't see it outside of liblasma. but i don't think we need PluginLoaderManager in any case.
> >     
> >     setPluginLoader and pluginLoader could just as easily be static methods in ExternalPluginLoader with just one static pointer in ExternalPluginLoader::Private.
> >     
> >     the only advantage i can think of for having a full-blown manager is to offer an easy way eventually to layer multiple loaders. i'm not sure that's even a feature we want, and if we do end up wanting it we can add that fairly easily without a manager as well (or add a manager then and change the implements of ExternalPluginLoader::setPluginLoader() to use that internally)

Seems reasonable... I assume that I have to use K_GLOBAL_STATIC on the ExternalPluginLoader class then, to make the static members available? The build is currently failing:

[ 84%] Building CXX object plasma/CMakeFiles/plasma.dir/externalpluginloader.o
/home/rrix/dev/trunk/kdelibs/plasma/externalpluginloader.cpp:34: error: ‘externalPluginLoaderSingleton’ has not been declared                                
/home/rrix/dev/trunk/kdelibs/plasma/externalpluginloader.cpp:35: error: expected constructor, destructor, or type conversion before ‘}’ token
make[2]: *** [plasma/CMakeFiles/plasma.dir/externalpluginloader.o] Error 1
make[1]: *** [plasma/CMakeFiles/plasma.dir/all] Error 2
make: *** [all] Error 2

I'll upload the current diff.


- Ryan


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On 2010-07-09 10:11:58, Ryan Rix wrote:
> 
> -----------------------------------------------------------
> This is an automatically generated e-mail. To reply, visit:
> http://reviewboard.kde.org/r/4554/
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> 
> (Updated 2010-07-09 10:11:58)
> 
> 
> Review request for Plasma, Aaron Seigo and Shaun Reich.
> 
> 
> Summary
> -------
> 
> Adds ability for applications which embed plasma to specify a class which plasma will query for Applet, DataEngine, and Service creation, giving them the chance to create these objects internally.
> 
> The foremost use of this is to give Plasma the chance to ask applications when restoring layouts from disk, for applets which were based on QWidgets, such as the case in various Plasma dashboards which may embed QWidgets as plasma::applets ....
> 
> 
> Diffs
> -----
> 
>   trunk/KDE/kdelibs/plasma/CMakeLists.txt 1146180 
>   trunk/KDE/kdelibs/plasma/applet.cpp 1146180 
>   trunk/KDE/kdelibs/plasma/dataenginemanager.cpp 1146180 
>   trunk/KDE/kdelibs/plasma/externalpluginloader.h PRE-CREATION 
>   trunk/KDE/kdelibs/plasma/pluginloader.h PRE-CREATION 
>   trunk/KDE/kdelibs/plasma/pluginloader.cpp PRE-CREATION 
>   trunk/KDE/kdelibs/plasma/service.cpp 1146180 
> 
> Diff: http://reviewboard.kde.org/r/4554/diff
> 
> 
> Testing
> -------
> 
> Well, this thing is about 90% there right now, everything works, etc, afaict, but I can't get the instance of the PluginManager outside of the Plasma namespace, if someone could help that would be great. :) I can commit some support into trunk/playground/base/shells/kpart 
> 
> 
> Thanks,
> 
> Ryan
> 
>

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