plasma-framework/plasma/dataengineconsumer.cpp
2013-01-30 13:43:33 +01:00

162 lines
4.6 KiB
C++

/*
* Copyright 2005 by Aaron Seigo <aseigo@kde.org>
* Copyright 2007 by Riccardo Iaconelli <riccardo@kde.org>
* Copyright 2008 by Ménard Alexis <darktears31@gmail.com>
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU Library General Public License as
* published by the Free Software Foundation; either version 2, or
* (at your option) any later version.
*
* This program 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 General Public License for more details
*
* You should have received a copy of the GNU Library General Public
* License along with this program; if not, write to the
* Free Software Foundation, Inc.,
* 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
*/
#include "dataengineconsumer.h"
#include "private/dataengineconsumer_p.h"
#include <QSet>
#include <qurlpathinfo.h>
#include <kdebug.h>
#include "private/dataenginemanager_p.h"
#include "private/remotedataengine_p.h"
#include "servicejob.h"
namespace Plasma
{
void DataEngineConsumerPrivate::slotJobFinished(Plasma::ServiceJob *job)
{
#ifndef NDEBUG
kDebug() << "engine ready!";
#endif
QString engineName = job->parameters()["EngineName"].toString();
QString location = job->destination();
QPair<QString, QString> pair(location, engineName);
#ifndef NDEBUG
kDebug() << "pair = " << pair;
#endif
if (!remoteEngines.contains(pair)) {
#ifndef NDEBUG
kDebug() << "engine does not exist yet!";
#endif
} else {
QUrlPathInfo engineLocation = QUrlPathInfo(QUrl(location));
engineLocation.setFileName(job->result().toString());
#ifndef NDEBUG
kDebug() << "setting location : " << engineLocation.url();
#endif
remoteEngines[pair]->setLocation(engineLocation.url());
}
}
void DataEngineConsumerPrivate::slotServiceReady(Plasma::Service *plasmoidService)
{
#ifndef NDEBUG
kDebug() << "service ready!";
#endif
if (!engineNameForService.contains(plasmoidService)) {
#ifndef NDEBUG
kDebug() << "no engine name for service!";
#endif
#ifndef NDEBUG
kDebug() << "amount of services in map: " << engineNameForService.count();
#endif
} else {
#ifndef NDEBUG
kDebug() << "value = " << engineNameForService.value(plasmoidService);
#endif
}
#ifndef NDEBUG
kDebug() << "requesting dataengine!";
#endif
KConfigGroup op = plasmoidService->operationDescription("DataEngine");
op.writeEntry("EngineName", engineNameForService.value(plasmoidService));
plasmoidService->startOperationCall(op);
connect(plasmoidService, SIGNAL(finished(Plasma::ServiceJob*)),
this, SLOT(slotJobFinished(Plasma::ServiceJob*)));
}
DataEngine *DataEngineConsumerPrivate::remoteDataEngine(const QString &name, const QUrl &location)
{
QPair<QString, QString> pair(location.toString(), name);
#ifndef NDEBUG
kDebug() << "pair = " << pair;
#endif
if (remoteEngines.contains(pair)) {
#ifndef NDEBUG
kDebug() << "existing remote dataengine at " << location;
#endif
return remoteEngines[pair];
}
#ifndef NDEBUG
kDebug() << "new remote dataengine at " << location;
#endif
RemoteDataEngine *engine = new RemoteDataEngine(QUrl());
remoteEngines[pair] = engine;
Service *plasmoidService = Service::access(location);
plasmoidService->setDestination(location.toString());
engineNameForService[plasmoidService] = name;
#ifndef NDEBUG
kDebug() << "name = " << name;
#endif
connect(plasmoidService, SIGNAL(serviceReady(Plasma::Service*)),
this, SLOT(slotServiceReady(Plasma::Service*)));
return engine;
}
DataEngineConsumer::DataEngineConsumer()
: d(new DataEngineConsumerPrivate)
{
}
DataEngineConsumer::~DataEngineConsumer()
{
foreach (const QString &engine, d->loadedEngines) {
DataEngineManager::self()->unloadEngine(engine);
}
delete d;
}
DataEngine *DataEngineConsumer::dataEngine(const QString &name, const QUrl &location)
{
if (!location.isEmpty()) {
return d->remoteDataEngine(name, location);
}
if (d->loadedEngines.contains(name)) {
DataEngine *engine = DataEngineManager::self()->engine(name);
if (engine->isValid()) {
return engine;
} else {
d->loadedEngines.remove(name);
}
}
DataEngine *engine = DataEngineManager::self()->loadEngine(name);
if (engine->isValid()) {
d->loadedEngines.insert(name);
}
return engine;
}
} // namespace Plasma
#include "private/moc_dataengineconsumer_p.cpp"