plasma-framework/remote/accessappletjob.cpp

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/*
* Copyright 2009 Rob Scheepmaker <r.scheepmaker@student.utwente.nl>
*
* 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 "accessappletjob.h"
#include "service.h"
#include "servicejob.h"
#include "applet.h"
#include "config-plasma.h"
#include <kzip.h>
#include <kdebug.h>
#include <ktempdir.h>
#include <kdesktopfile.h>
#include "package.h"
#include <qtimer.h>
#include "private/applet_p.h"
namespace Plasma
{
class AccessAppletJobPrivate
{
public:
AccessAppletJobPrivate(const KUrl &location, AccessAppletJob *owner)
: q(owner),
location(location)
{
}
void slotStart()
{
q->start();
}
void slotServiceReady(Plasma::Service *service)
{
KConfigGroup op = service->operationDescription("GetPackage");
service->startOperationCall(op);
q->connect(service, SIGNAL(finished(Plasma::ServiceJob*)),
q, SLOT(slotPackageDownloaded(Plasma::ServiceJob*)));
}
void slotPackageDownloaded(Plasma::ServiceJob *job)
{
if (job->error()) {
kDebug() << "Plasmoid Access Job triggers an error.";
q->setError(job->error());
q->setErrorText(job->errorText());
}
//TODO: there's some duplication with installPackage, but we don't want to actually install
//the fetched package. Just extract the archive somewhere in a temp directory.
if (job->result().type() == QVariant::String) {
QString pluginName = job->result().toString();
kDebug() << "Server responded with a pluginname, trying to load: " << pluginName;
applet = Applet::load(pluginName);
if (applet) {
applet->d->remoteLocation = location.prettyUrl();
} else {
q->setError(-1);
q->setErrorText(i18n("The \"%1\" widget is not installed.", pluginName));
}
q->emitResult();
} else {
kDebug() << "Server responded with a plasmoid package";
//read, and extract the plasmoid package to a temporary directory
QByteArray package = job->result().toByteArray();
QDataStream stream(&package, QIODevice::ReadOnly);
KZip archive(stream.device());
if (!archive.open(QIODevice::ReadOnly)) {
kWarning() << "Could not open package file";
q->setError(-1);
q->setErrorText(i18n("Server sent an invalid plasmoid package."));
q->emitResult();
return;
}
const KArchiveDirectory *source = archive.directory();
KTempDir tempDir;
tempDir.setAutoRemove(false);
QString path = tempDir.name();
source->copyTo(path);
/**
QString metadataFilename = path + "/metadata.desktop";
KDesktopFile cfg(metadataFilename);
KConfigGroup config = cfg.desktopGroup();
config.writeEntry("EngineLocation", location.prettyUrl());
config.sync();
*/
applet = Applet::loadPlasmoid(path);
applet->d->remoteLocation = location.prettyUrl();
q->emitResult();
}
}
void slotTimeout()
{
kWarning() << "Plasmoid access job timed out";
q->setError(-1);
q->setErrorText(i18n("Timeout"));
q->emitResult();
}
AccessAppletJob *q;
KUrl location;
Applet *applet;
};
AccessAppletJob::AccessAppletJob(const KUrl &location, QObject *parent)
: KJob(parent),
d(new AccessAppletJobPrivate(location, this))
{
QTimer::singleShot(30000, this, SLOT(slotTimeout()));
}
AccessAppletJob::~AccessAppletJob()
{
delete d;
}
Applet *AccessAppletJob::applet() const
{
return d->applet;
}
void AccessAppletJob::start()
{
#ifdef ENABLE_REMOTE_WIDGETS
kDebug() << "fetching a plasmoid from location = " << d->location.prettyUrl();
Service *service = Service::access(d->location);
connect(service, SIGNAL(serviceReady(Plasma::Service*)),
this, SLOT(slotServiceReady(Plasma::Service*)));
#else
kWarning() << "libplasma was compiled without support for remote services. Accessing remote applet failed because of that.";
setError(-1);
setErrorText(i18n("Your system does not provide support for the 'remote widgets' feature. Access Failed."));
emitResult();
#endif
}
} // namespace Plasma
#include "accessappletjob.moc"