/*

* Copyright (c) 2009 Nokia Corporation and/or its subsidiary(-ies).

* All rights reserved.

* This component and the accompanying materials are made available

* under the terms of "Eclipse Public License v1.0"

* which accompanies this distribution, and is available

* at the URL "http://www.eclipse.org/legal/epl-v10.html".

*

* Initial Contributors:

* Nokia Corporation - initial contribution.

*

* Contributors:

*

* Description:

*

*/

#include "tstaskswitcher.h"

#include <QStateMachine>

#include <QEventLoop>

#include <qservicemanager.h>

QTM_USE_NAMESPACE

TsTaskSwitcher::TsTaskSwitcher(QObject* aParent) : QObject(aParent)

{

    // FIXME: we're leaking service manager to prevent crash caused by QServiceManager deletion

    QServiceManager *serviceManager = new QServiceManager;

    // FIXME: temporary workaround for bug in QtSF database - this process have to add services

    QList<QServiceInterfaceDescriptor> tsServiceInterfaces = serviceManager->findInterfaces("TaskSwitcher");

    QStringList requiredInterfaces;

    requiredInterfaces << "com.nokia.taskswitcher.itemprovider";

    requiredInterfaces << "com.nokia.taskswitcher.activation";

    requiredInterfaces << "com.nokia.taskswitcher.deactivation";

    requiredInterfaces << "com.nokia.taskswitcher.presentation";

    requiredInterfaces << "com.nokia.taskswitcher.runtime.defaultruntime";

    foreach (const QServiceInterfaceDescriptor &interface, tsServiceInterfaces) {

        QString interfaceName = interface.interfaceName();

        if (requiredInterfaces.contains(interfaceName)) {

            requiredInterfaces.removeAll(interfaceName);

        }

    }

    if (!requiredInterfaces.isEmpty()) {

        // clean old entries

        serviceManager->removeService("TaskSwitcher");

        bool servicesAdded = serviceManager->addService(":/tsserviceplugin.xml");

        Q_ASSERT_X(servicesAdded, "Adding Ts Services", qPrintable(QString("addService returned false, error %1").arg(serviceManager->error())));

        bool runtimeAdded = serviceManager->addService(":/tsdefaultruntimeplugin.xml");

        Q_ASSERT_X(runtimeAdded, "Adding Ts Runtime", qPrintable(QString("addService returned false, error %1").arg(serviceManager->error())));

    }

    // FIXME

    mRuntime = serviceManager->loadLocalTypedInterface<QStateMachine>("com.nokia.taskswitcher.runtime.defaultruntime");

    if (mRuntime) {

        mRuntime->setParent(this);

        connect(mRuntime, SIGNAL(stopped()), this, SIGNAL(exit()));

    } else {

        qCritical("Failed to create runtime");

    }

}

void TsTaskSwitcher::start()

{

    if (mRuntime) {

        mRuntime->start();

    } else {

        emit exit();

    }

}

void TsTaskSwitcher::stop()

{

    if (mRuntime) {

        if (mRuntime->isRunning()) {

            QEventLoop eventLoop;

            connect(mRuntime, SIGNAL(finished()), &eventLoop, SLOT(quit()));

            QMetaObject::invokeMethod(mRuntime, "event_exit", Qt::QueuedConnection);

            eventLoop.exec(); 

        }        

    }

}