/*

* Copyright (c) 2007-2010 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:   This file contains the header file of the RIAUpdateClient class 

*

*/

#ifndef IA_UPDATE_CLIENT_H

#define IA_UPDATE_CLIENT_H

#include <e32std.h>

#include <e32cmn.h>

#include <iaupdateobserver.h>

#include <QObject>

class CIAUpdateParameters;

class MIAUpdateObserver;

class XQServiceRequest;

class IAUpdateClient : public QObject

//NONSHARABLE_CLASS( IAUpdateClient ) : public QObject

    {

    Q_OBJECT

public:

    enum RequestType

        {

        /**

        * No operation is going on.

        */ 

        NoOperation,       

        /**

        * Update check has been requested.

        */

        CheckUpdates,

        /**

        * Show Update operation has been requested.

        */

        ShowUpdates,     

        /**

        * Update query has been requested.

        */

        UpdateQuery,

        /**

        * Bring to foreground has been requested.

        */

        BroughtToForeground

        };

    IAUpdateClient(MIAUpdateObserver& aObserver);

    ~IAUpdateClient();

    int initRequest(const CIAUpdateParameters* updateParameters, const QString& message, bool toBackground);

    void checkUpdates(const CIAUpdateParameters& updateParameters);

    void showUpdates(const CIAUpdateParameters& updateParameters);

    void updateQuery();

    void update();

    void broughtToForeground();

protected slots:

    void requestCompleted(const QVariant& value);

    void requestError(int err);     

private:

    QString qStringFromTDesC16( const TDesC16& aDes16 ); 

    QString qStringFromTDesC8( const TDesC8& aDes8 );

    QString qStringFromTDesC( const TDesC& aDes );

private: //data

    XQServiceRequest* mServiceRequest;

    // Informs what kind of operation is going on.

    RequestType mCurrentRequestType;

    // Observer who will be informed about the completion of the operations. 

    MIAUpdateObserver& mObserver; 

    };

#endif // IA_UPDATE_CLIENT_H