1 files changed, 84 insertions, 0 deletions
diff --git a/src/fbgui/downloadmanager.h b/src/fbgui/downloadmanager.h
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+++ b/src/fbgui/downloadmanager.h
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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