/*

* Copyright (c) 2010 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: Example of home screen content publishing client

*

*/

#include <qservicefilter.h>

#include <qserviceinterfacedescriptor.h>

#include <QMetaObject>

#include <QMetaMethod>

#include "contentpublishclient.h"

/*!

    \ingroup group_content_publish_client

    \class ContentPublishClient

    \brief Example implementation for home screen client api usage.

    ContentPublishClient is derived from QObject and implements 

    needed functions for the home screen content publish client. 

*/

/*!

    Constructor.

*/

ContentPublishClient::ContentPublishClient(QServiceManager &manager, QObject *parent)

    : QObject(parent),

      mManager(&manager)

{

}

/*!

    Destructor

*/

ContentPublishClient::~ContentPublishClient()

{

}

/*!

    Loads service interface

*/

bool ContentPublishClient::load()

{    

    QServiceFilter filter("com.nokia.symbian.IHomeScreenClient");

    filter.setServiceName("hshomescreenclientplugin");

    QList<QServiceInterfaceDescriptor> interfaces = mManager->findInterfaces(filter);

    if(interfaces.isEmpty()) {

        QServiceManager::Error error = mManager->error();

        return false;

    }

    qDebug() << interfaces.first().interfaceName()

             << interfaces.first().serviceName()

             << interfaces.first().isValid();

    mService = mManager->loadInterface(interfaces.first());

    return (mService);

}

/*!

    Adds hello world widget 

*/

void ContentPublishClient::addHelloworldWidget()

{

    if ( addWidget("helloworldwidgetplugin")) {

        qDebug() << "HelloWorld added"; 

    } else {

        qDebug() << "adding HelloWorld failed"; 

    }

}

/*!

    Adds clock world widget 

*/

void ContentPublishClient::addClockWidget()

{

    if ( addWidget("hsclockwidgetplugin")) {

        qDebug() << "Clock widget added"; 

    } else {

        qDebug() << "adding Clock widget failed"; 

    }

}

/*!

    Adds widget \a widgetUri utilizing service interface and invokeMethod call

*/

// Start of snippet 1

bool ContentPublishClient::addWidget(QString widgetUri)

{   

    // find interface IHomeScreenClient from service hshomescreenclientplugin 

    QServiceManager manager;

    QServiceFilter filter("com.nokia.symbian.IHomeScreenClient");

    filter.setServiceName("hshomescreenclientplugin");

    QList<QServiceInterfaceDescriptor> interfaces = manager.findInterfaces(filter);

    if(interfaces.isEmpty()) {

        QServiceManager::Error error = manager.error();

        return false;

    }

    QObject* service = manager.loadInterface(interfaces.first());

    // access service's addWidget function

    bool retVal = false;

    bool ret = QMetaObject::invokeMethod( 

        service, 

        "addWidget",

        Qt::DirectConnection,

        Q_RETURN_ARG(bool, retVal),

        Q_ARG(QString,widgetUri),

        Q_ARG(QVariantHash,QVariantHash()));

    if(!ret){

        // invokeMethod returned error

        return false;

    }

    if(!retVal){

        // addWidget returned error

        return false;

    }

    return true;

}

// End of snippet 1

/*!

    Sets home screen wallpaper as testwallpaper.png 

*/

void ContentPublishClient::setWallpaper1()

{

    QString wallpaper = "c:/data/images/testwallpaper.jpg";

    setWallpaper(wallpaper);

}

/*!

    Sets home screen wallpaper as testwallpaper2.png 

*/

void ContentPublishClient::setWallpaper2()

{

    QString wallpaper = "c:/data/images/testwallpaper2.jpg";

    setWallpaper(wallpaper);

}

/*!

    Changes home screen wallpaper to \a wallpaper image.

    Note. load function needs to be called before this, it creates mService object.

*/

// Start of snippet 2

bool ContentPublishClient::setWallpaper(QString wallpaper)

{   

    QByteArray signature = QMetaObject::normalizedSignature("setWallpaper(QString)");

    int methodIndex = mService->metaObject()->indexOfMethod(signature);   

    if (methodIndex<0) {

        return false;

    }

    QMetaMethod method = mService->metaObject()->method(methodIndex);

    bool retVal(false);

    bool ret = method.invoke( mService,

                              Qt::DirectConnection,

                              Q_RETURN_ARG(bool, retVal),

                              Q_ARG(QString,wallpaper));

    if(!ret){

        // invokeMethod returned error

        return false;

    }

    if(!retVal){

        // setWallpaper returned error

        return false;

    }

    return true;

}

// End of snippet 2