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List:       kde-core-devel
Subject:    Re: Review Request: Pluggable KFileDialog/KAbstractFileModule
From:       "David Faure" <faure () kde ! org>
Date:       2009-08-30 22:26:53
Message-ID: 20090830222653.14746.65208 () localhost
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Ship it!


Heh. This is funny side effect of the kde-4.0 change were we made kfile dlopened. The idea was \
not at all to allow other implementations of it (rather it was just to delay the loading of \
that code). But ok, why not :)

About using the trader: indeed, not much point when the library name is already known (from the \
config). Using the trader would make sense if you wanted the user to be able to configure the \
preferred "KIO/FileModule" without knowing the name of the library (but simply by selecting in \
the list of available ones), or if you wanted the mere installation of the alternate module to \
mean it should be used (InitialPreference field). But indeed we don't want that in the case of \
the file dialog.

The fallback to loadFileModule("kfilemodule") could be done only if moduleName != \
"kfilemodule", btw, to avoid trying the same thing twice.

Anyway. No real objections to the patch, but I wonder if the integration of nepomuk features in \
the filedialog shouldn't be done with an additional "mode" in the existing filedialog rather \
than a hard all-or-nothing config item. A user might want to sometimes "query nepomuk" and \
sometimes "use the old-fashioned way"...

- David


On 2009-08-28 13:16:59, Sebastian Trueg wrote:
> 
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> This is an automatically generated e-mail. To reply, visit:
> http://reviewboard.kde.org/r/1407/
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> 
> (Updated 2009-08-28 13:16:59)
> 
> 
> Review request for kdelibs.
> 
> 
> Summary
> -------
> 
> KIO already loads the widget used in the KFileDialog dynamically from libkfilemodule. The \
> base class is KAbstractFileModule. However, the loaded lib/plugin is fixed. This small patch \
> changes the situation making it really pluggable by using the standard KService procedure of \
> loading plugins. It allows to easily change the file dialog implementation by creating a \
> plugin of type "KIO/FileModule" and adding its name to the "kfilemodulerc" config file. The \
> reason for this is that in the GSoC Alessandro Sivieri developed a replacement for the file \
> dialog based on Nepomuk. He tried to patch it into kdelibs but it was a mess due to all the \
> dependencies. With this approach implementations can easily be switched. 
> Open issues:
> * the patch uses KService::serviceByDesktopName but also contains commented code using \
>                 KServiceTypeTrader. I am not sure which is preferable.
> * I left in the legacy code of loading the filemodule from libkfilemodule. I suppose this \
> should be removed. 
> 
> Diffs
> -----
> 
> trunk/KDE/kdelibs/kfile/CMakeLists.txt 1013393 
> trunk/KDE/kdelibs/kfile/kfilemodule.desktop PRE-CREATION 
> trunk/KDE/kdelibs/kfile/kfilemodule.h 1013393 
> trunk/KDE/kdelibs/kfile/kfilemodule.cpp 1013393 
> trunk/KDE/kdelibs/kio/CMakeLists.txt 1013393 
> trunk/KDE/kdelibs/kio/kfile/kfiledialog.cpp 1013393 
> trunk/KDE/kdelibs/kio/kfile/kiofilemodule.desktop PRE-CREATION 
> 
> Diff: http://reviewboard.kde.org/r/1407/diff
> 
> 
> Testing
> -------
> 
> 
> Thanks,
> 
> Sebastian
> 
> 


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