KLibFactory* KLibLoader::factory( const char* name )
{
KLibrary* lib = library( name );
if ( !lib )
return 0;
return lib->factory();
}
const TDEInstance *Factory::partInstanceFromLibrary( const TQCString &libraryName )
{
KLibrary *library = KLibLoader::self()->library( libraryName );
if ( !library )
return 0;
KLibFactory *factory = library->factory();
if ( !factory )
return 0;
KParts::Factory *pfactory = tqt_dynamic_cast<KParts::Factory *>( factory );
if ( !pfactory )
return 0;
return pfactory->partInstance();
}
Plugin *
PluginLoader::loadPlugin(const QString &name)
{
KLibrary *lib = NULL;
KLibFactory *factory = NULL;
Plugin *plugin = NULL;
PluginMap::iterator it;
bool success = true;
// if the plugin has already been loaded, increment
// its reference and return.
if((it = _plugins.find(name)) != _plugins.end()) {
plugin = it.data();
plugin->ref();
return plugin;
}
// use KLibLoader to get a reference to the library
lib = KLibLoader::self()->library(name.latin1());
if(!lib) {
kdError() << "failed loading plugin library " << name << endl;
success = false;
}
// get the factory from the library
if(success) {
factory = lib->factory();
if(!factory) {
kdError() << "failed to find factory for " << name << endl;
success = false;
}
}
// use the factory to create the plugin
if(success) {
plugin = dynamic_cast<Plugin *>(factory->create((QObject*)0, name.latin1()));
if(!plugin) {
kdError() << "failed to create a plugin object for " << name << endl;
success = false;
}
else {
// we have to register the plugin here, otherwise, we can get
// recursive loads
_plugins[name] = plugin;
_categories[plugin->category()].append(plugin);
}
}
// initialize the plugin
if(success && plugin) {
success = plugin->init();
if(!success) {
// on failure, delete the plugin. this should cause the
// library to unload.
kdError() << "failure initializing " << name << endl;
_categories[plugin->category()].remove(plugin);
_plugins.remove(name);
delete plugin;
}
}
// finally, finally connect to the destroyed signal and keep a
// reference to it
if(success) {
plugin->ref();
connect(plugin, SIGNAL(destroyed(QObject *)), SLOT(slotDestroyed(QObject *)));
}
return plugin;
}