You can not select more than 25 topics
Topics must start with a letter or number, can include dashes ('-') and can be up to 35 characters long.
303 lines
10 KiB
303 lines
10 KiB
/*
|
|
Copyright (c) 1999 Matthias Hoelzer-Kluepfel <hoelzer@kde.org>
|
|
Copyright (c) 2000 Matthias Elter <elter@kde.org>
|
|
Copyright (c) 2003,2004 Matthias Kretz <kretz@kde.org>
|
|
Copyright (c) 2004 Frans Englich <frans.englich@telia.com>
|
|
|
|
This file is part of the KDE project
|
|
|
|
This library is free software; you can redistribute it and/or
|
|
modify it under the terms of the GNU Library General Public
|
|
License version 2, as published by the Free Software Foundation.
|
|
|
|
This library is distributed in the hope that it will be useful,
|
|
but WITHOUT ANY WARRANTY; without even the implied warranty of
|
|
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
|
|
Library General Public License for more details.
|
|
|
|
You should have received a copy of the GNU Library General Public License
|
|
along with this library; see the file COPYING.LIB. If not, write to
|
|
the Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor,
|
|
Boston, MA 02110-1301, USA.
|
|
*/
|
|
|
|
#include <qfile.h>
|
|
#include <qlabel.h>
|
|
#include <qlayout.h>
|
|
|
|
#include <kapplication.h>
|
|
#include <kdebug.h>
|
|
#include <klocale.h>
|
|
#include <kmessagebox.h>
|
|
#include <kparts/componentfactory.h>
|
|
|
|
#include "kcmoduleloader.h"
|
|
|
|
|
|
/***************************************************************/
|
|
/**
|
|
* When something goes wrong in loading the module, this one
|
|
* jumps in as a "dummy" module.
|
|
*/
|
|
class KCMError : public KCModule
|
|
{
|
|
public:
|
|
KCMError( const QString& msg, const QString& details, QWidget* parent )
|
|
: KCModule( parent, "KCMError" )
|
|
{
|
|
QVBoxLayout* topLayout = new QVBoxLayout( this );
|
|
topLayout->addWidget( new QLabel( msg, this ) );
|
|
topLayout->addWidget( new QLabel( details, this ) );
|
|
}
|
|
};
|
|
/***************************************************************/
|
|
|
|
|
|
|
|
|
|
KCModule* KCModuleLoader::load(const KCModuleInfo &mod, const QString &libname,
|
|
KLibLoader *loader, ErrorReporting report, QWidget * parent,
|
|
const char * name, const QStringList & args )
|
|
{
|
|
// attempt to load modules with ComponentFactory, only if the symbol init_<lib> exists
|
|
// (this is because some modules, e.g. kcmkio with multiple modules in the library,
|
|
// cannot be ported to KGenericFactory)
|
|
KLibrary *lib = loader->library(QFile::encodeName(libname.arg(mod.library())));
|
|
if (lib) {
|
|
QString initSym("init_");
|
|
initSym += libname.arg(mod.library());
|
|
|
|
if ( lib->hasSymbol(QFile::encodeName(initSym)) )
|
|
{
|
|
KLibFactory *factory = lib->factory();
|
|
if ( factory )
|
|
{
|
|
KCModule *module = KParts::ComponentFactory::createInstanceFromFactory<KCModule>( factory, parent, name ? name : mod.handle().latin1(), args );
|
|
if (module)
|
|
return module;
|
|
}
|
|
// else do a fallback
|
|
kdDebug(1208) << "Unable to load module using ComponentFactory. Falling back to old loader." << endl;
|
|
}
|
|
|
|
// get the create_ function
|
|
QString factory("create_%1");
|
|
void *create = lib->symbol(QFile::encodeName(factory.arg(mod.handle())));
|
|
|
|
if (create)
|
|
{
|
|
// create the module
|
|
KCModule* (*func)(QWidget *, const char *);
|
|
func = (KCModule* (*)(QWidget *, const char *)) create;
|
|
return func( parent, name ? name : mod.handle().latin1() );
|
|
}
|
|
else
|
|
{
|
|
QString libFileName = lib->fileName();
|
|
lib->unload();
|
|
return reportError( report, i18n("<qt>There was an error when loading the module '%1'.<br><br>"
|
|
"The desktop file (%2) as well as the library (%3) was found but "
|
|
"yet the module could not be loaded properly. Most likely "
|
|
"the factory declaration was wrong, or the "
|
|
"create_* function was missing.</qt>")
|
|
.arg( mod.moduleName() )
|
|
.arg( mod.fileName() )
|
|
.arg( libFileName ),
|
|
QString::null, parent );
|
|
}
|
|
|
|
lib->unload();
|
|
}
|
|
return reportError( report, i18n("The specified library %1 could not be found.")
|
|
.arg( mod.library() ), QString::null, parent );
|
|
return 0;
|
|
}
|
|
|
|
KCModule* KCModuleLoader::loadModule(const KCModuleInfo &mod, bool withfallback, QWidget * parent, const char * name, const QStringList & args )
|
|
{
|
|
return loadModule( mod, None, withfallback, parent, name, args );
|
|
}
|
|
|
|
KCModule* KCModuleLoader::loadModule(const KCModuleInfo &mod, ErrorReporting report, bool withfallback, QWidget * parent, const char * name, const QStringList & args )
|
|
{
|
|
/*
|
|
* Simple libraries as modules are the easiest case:
|
|
* We just have to load the library and get the module
|
|
* from the factory.
|
|
*/
|
|
|
|
if ( !mod.service() )
|
|
{
|
|
if ( mod.moduleName() == "kcmlisa" || mod.moduleName() == "kcmkiolan" )
|
|
{
|
|
return reportError( report,
|
|
i18n("The module %1 could not be found.")
|
|
.arg( mod.moduleName() ),
|
|
i18n("<qt><p>The Lisa and lan:/ ioslave modules "
|
|
"are not installed by default in Kubuntu, because they are obsolete "
|
|
"and replaced by zeroconf.<br> If you still wish to use them, you "
|
|
"should install the lisa package from the Universe repository.</p></qt>"),
|
|
parent );
|
|
} else {
|
|
return reportError( report,
|
|
i18n("The module %1 could not be found.")
|
|
.arg( mod.moduleName() ),
|
|
i18n("<qt><p>The diagnostics is:<br>The desktop file %1 could not be found.</p></qt>").arg(mod.fileName()),
|
|
parent );
|
|
}
|
|
}
|
|
|
|
if (!mod.library().isEmpty())
|
|
{
|
|
// get the library loader instance
|
|
|
|
KLibLoader *loader = KLibLoader::self();
|
|
|
|
KCModule *module = load(mod, "kcm_%1", loader, report, parent, name, args );
|
|
/*
|
|
* Only try to load libkcm_* if it exists, otherwise KLibLoader::lastErrorMessage would say
|
|
* "libkcm_foo not found" instead of the real problem with loading kcm_foo.
|
|
*/
|
|
if (!KLibLoader::findLibrary( QCString( "libkcm_" ) + QFile::encodeName( mod.library() ) ).isEmpty() )
|
|
module = load(mod, "libkcm_%1", loader, report, parent, name, args );
|
|
if (module)
|
|
return module;
|
|
return reportError( report,
|
|
i18n("The module %1 could not be loaded.")
|
|
.arg( mod.moduleName() ), QString::null, parent );
|
|
}
|
|
|
|
/*
|
|
* Ok, we could not load the library.
|
|
* Try to run it as an executable.
|
|
* This must not be done when calling from kcmshell, or you'll
|
|
* have infinite recursion
|
|
* (startService calls kcmshell which calls modloader which calls startService...)
|
|
*
|
|
*/
|
|
if(withfallback)
|
|
{
|
|
KApplication::startServiceByDesktopPath(mod.fileName(), QString::null);
|
|
}
|
|
else
|
|
{
|
|
return reportError( report,
|
|
i18n("The module %1 is not a valid configuration module.")
|
|
.arg( mod.moduleName() ), i18n("<qt><p>The diagnostics is:<br>The desktop file %1 does not specify a library.</qt>").arg(mod.fileName()), parent );
|
|
}
|
|
|
|
return 0;
|
|
}
|
|
|
|
KCModule* KCModuleLoader::loadModule(const QString &module, QWidget *parent,
|
|
const char *name, const QStringList & args)
|
|
{
|
|
return loadModule(KCModuleInfo(module), None, false, parent, name, args);
|
|
}
|
|
|
|
KCModule* KCModuleLoader::loadModule(const QString &module, ErrorReporting
|
|
report, QWidget *parent, const char *name, const QStringList & args)
|
|
{
|
|
return loadModule(KCModuleInfo(module), report, false, parent, name, args);
|
|
}
|
|
|
|
void KCModuleLoader::unloadModule(const KCModuleInfo &mod)
|
|
{
|
|
// get the library loader instance
|
|
KLibLoader *loader = KLibLoader::self();
|
|
|
|
// try to unload the library
|
|
QString libname("libkcm_%1");
|
|
loader->unloadLibrary(QFile::encodeName(libname.arg(mod.library())));
|
|
|
|
libname = "kcm_%1";
|
|
loader->unloadLibrary(QFile::encodeName(libname.arg(mod.library())));
|
|
}
|
|
|
|
void KCModuleLoader::showLastLoaderError(QWidget *parent)
|
|
{
|
|
KMessageBox::detailedError(parent,
|
|
i18n("There was an error loading the module."),i18n("<qt><p>The diagnostics is:<br>%1"
|
|
"<p>Possible reasons:</p><ul><li>An error occurred during your last "
|
|
"KDE upgrade leaving an orphaned control module<li>You have old third party "
|
|
"modules lying around.</ul><p>Check these points carefully and try to remove "
|
|
"the module mentioned in the error message. If this fails, consider contacting "
|
|
"your distributor or packager.</p></qt>")
|
|
.arg(KLibLoader::self()->lastErrorMessage()));
|
|
|
|
}
|
|
|
|
bool KCModuleLoader::testModule( const QString& module )
|
|
{
|
|
return testModule( KCModuleInfo( module ) );
|
|
}
|
|
|
|
bool KCModuleLoader::testModule( const KCModuleInfo& module )
|
|
{
|
|
if (!module.service())
|
|
{
|
|
kdDebug(1208) << "Module '" << module.fileName() << "' not found." << endl;
|
|
return true;
|
|
}
|
|
|
|
bool doLoad = module.service()->property( "X-KDE-Test-Module", QVariant::Bool ).toBool();
|
|
if( !doLoad )
|
|
{
|
|
return true;
|
|
}
|
|
else
|
|
{
|
|
/**
|
|
* If something fails we return true - we can't risk functionality becoming
|
|
* unavailable because of a buggy test. Furthermore, the error needs to
|
|
* show so it is discovered. KCModuleProxy will detect the error and load
|
|
* a corresponding KCMError.
|
|
* */
|
|
KLibLoader* loader = KLibLoader::self();
|
|
KLibrary* library = loader->library( QFile::encodeName((QString("kcm_%1").arg(module.library()))) );
|
|
if( library )
|
|
{
|
|
void *test_func = library->symbol( QString("test_%1").arg(module.factoryName()).utf8() );
|
|
if( test_func )
|
|
{
|
|
bool (*func)() = (bool(*)())test_func;
|
|
if( func() )
|
|
{
|
|
return true;
|
|
}
|
|
else
|
|
{
|
|
return false;
|
|
}
|
|
}
|
|
else
|
|
{
|
|
kdDebug(1208) << "The test function for module '" << module.fileName() << "' could not be found." << endl;
|
|
return true;
|
|
}
|
|
}
|
|
kdDebug(1208) << "The library '" << module.library() << "' could not be found." << endl;
|
|
return true;
|
|
}
|
|
}
|
|
|
|
KCModule* KCModuleLoader::reportError( ErrorReporting report, const QString & text,
|
|
QString details, QWidget * parent )
|
|
{
|
|
if( details.isNull() )
|
|
details = i18n("<qt><p>The diagnostics is:<br>%1"
|
|
"<p>Possible reasons:</p><ul><li>An error occurred during your last "
|
|
"KDE upgrade leaving an orphaned control module<li>You have old third party "
|
|
"modules lying around.</ul><p>Check these points carefully and try to remove "
|
|
"the module mentioned in the error message. If this fails, consider contacting "
|
|
"your distributor or packager.</p></qt>").arg(KLibLoader::self()->lastErrorMessage());
|
|
if( report & Dialog )
|
|
KMessageBox::detailedError( parent, text, details );
|
|
if( report & Inline )
|
|
return new KCMError( text, details, parent );
|
|
return 0;
|
|
}
|
|
|
|
// vim: ts=2 sw=2 et
|
|
|