/**

   This file is part of CWRT package **

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

   This program is free software: you can redistribute it and/or modify

   it under the terms of the GNU (Lesser) General Public License as 

   published by the Free Software Foundation, version 2.1 of the License. 

   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 

   (Lesser) General Public License for more details. You should have 

   received a copy of the GNU (Lesser) General Public License along 

   with this program. If not, see <http://www.gnu.org/licenses/>.

*/

#ifndef WMDRMDOWNLOADBACKEND_H

#define WMDRMDOWNLOADBACKEND_H

#include <bldvariant.hrh>

#if defined(RD_WMDRM_DLA_ENABLERS)

#include "dmcommon.h"

#include "dmcommoninternal.h"

#include "downloadbackend.h"

#include <e32base.h>

// forward declarations

class DownloadCore;

class ClientDownload;

class CCameseUtility;

// class declaration

// concrete download implementation for WM DRM downloads

class WMDRMDownloadBackend : public DownloadBackend, public CActive

{

    Q_OBJECT

public:

    WMDRMDownloadBackend(DownloadCore *dlCore, ClientDownload *dl);

    ~WMDRMDownloadBackend();

    // fetches the wmdrm download attributes

    QVariant getAttribute(DownloadAttribute attr);

    // sets the wmdrm download specific attributes

    int setAttribute(DownloadAttribute attr, const QVariant& value);

    // overloaded function for pausing the download

    int pause();

    // overloaded function for resuming paused download

    int resume();

    // overloaded function for cancelling the download

    int cancel();

    // stores the data in storage

    void store(QByteArray data, bool lastChunk=false);

    // deletes the storage

    void deleteStore();

    // returns the size of stored data

    qint64 storedDataSize();

    // from base class CActive

    void RunL();

    void DoCancel();

private slots:

    void bytesRecieved(qint64 bytesRecieved, qint64 bytesTotal);

    void handleFinished();    

private:

    // event handler

    bool event(QEvent *event);

    // mark download failed

    void markDownloadFailed(const QString& error);

private:

    DownloadCore *m_downloadCore;

    ClientDownload *m_download;

    ClientDownload *m_contentDownload; // not owned

    CCameseUtility* m_utility;

    HBufC8* m_contentUrl;

    // Error status for the synchronous request

    TInt m_requestResult;

    //Waiter for the synchronous request  

    CActiveSchedulerWait m_wait;   

};

#endif

#endif