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/*
* Copyright (c) 2010,2011 - RZ Uni Freiburg
* Copyright (c) 2010,2011 - OpenSLX Project
*
* This program/file is free software distributed under the GPL version 2.
* See http://openslx.org/COPYING
*
* If you have any feedback please consult http://openslx.org/feedback and
* send your feedback to feedback@openslx.org
*
* General information about OpenSLX can be found under http://openslx.org
*
*
* Class managing download requests:
* - provides queueing functionality
* - static info: filename, filesize
* - dynamic info: download progress, current speed
*
*/
#ifndef DOWNLOADMANAGER_H
#define DOWNLOADMANAGER_H
#include "fbgui.h"
extern bool debug;
extern QUrl baseURL;
extern QString binPath;
extern QString downloadPath;
extern int updateInterval;
class DownloadManager: public QObject {
Q_OBJECT
public:
DownloadManager();
~DownloadManager();
QTime time;
private:
// checks for valid download directory, ran once in constructor
void checkDownloadDirectory();
// private control function for queueing mechanism.
void processDownloadRequest(const QUrl& url);
// base objects for downloading
QNetworkAccessManager* _qnam;
QQueue<QUrl> _downloadQueue;
QNetworkReply* _currentDownload;
QFile _outfile;
QDir _downloadDir;
// download progress variables
int _currentProgress, _lastProgress;
// download in progress flag
bool _dip;
// static counter
static int _downloaded;
signals:
// notify sends a message to the javascript interface to be evaluated there
void notify(const QString& msg);
// downloadInfo sends static information (name, size) to the interface.
void downloadInfo(const QString& filename, const double& filesize);
// updateProgress sends download progress information to the interface.
void updateProgress(const int& percent, const double& speed, const QString& unit);
// signal emitted when download queue is empty.
void downloadQueueEmpty();
public slots:
// public slots to receive download requests.
void downloadFile(const QUrl& fileUrl);
// convenience function
void downloadFile(const QString& fileUrl);
private slots:
// private slots to manage the downloading process
void startNextDownload();
void processMetaInfo();
void downloadReady();
void downloadProgress(qint64 bytesIn, qint64 bytesTotal);
void downloadFinished();
};
#endif // DOWNLOADMANAGER_H
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