/**

   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 BACKGROUNDDOWNLOAD_H

#define BACKGROUNDDOWNLOAD_H

#include "download.h"

#include "dmcommon.h"

#include "dmpimpl.h"

#include <QObject>

class DownloadManager;

class BackgroundDownloadManager;

class BackgroundDownloadPrivate;

typedef QList<QObject*> EventReceiverList;

// class declaration

class BackgroundDownload : public Download

{

    Q_OBJECT

    DM_DECLARE_PRIVATE(BackgroundDownload);

public:

    BackgroundDownload(DownloadManager* mgr, const QString& url, int dlId);

    virtual ~BackgroundDownload();

    // starts the download

    int start();

    // id of the download

    int id();

    // sets the attributes for the download

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

    // fetches the attributes of download

    QVariant getAttribute(DownloadAttribute attr);

    // pauses the download

    int pause();

    // resumes the download

    int resume();

    // cancels the download

    int cancel();

    // registers the event listener

    void registerEventReceiver(QObject *receiver);

    // unregisters the event listener

    void unregisterEventReceiver(QObject *receiver);

    // returns the download manager

    DownloadManager* downloadManager();

    // returns the list of child downloads

    void getChildren(QList<Download*>& list);

    // posts the event to recievers event loop

    void postEvent(DEventType type, DlEventAttributeMap* attrMap);

    // remove info of this download

    void removeDownloadInfo();

private: // copy constructor and assaignment operator

    BackgroundDownload(const BackgroundDownload &);

    BackgroundDownload &operator=(const BackgroundDownload &);

    // returns the event listeners

    EventReceiverList& eventReceivers();

};

#endif