qgsfiledownloader.h

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/***************************************************************************
  qgsfiledownloader.h
  --------------------------------------
  Date                 : November 2016
  Copyright            : (C) 2016 by Alessandro Pasotti
  Email                : apasotti at boundlessgeo dot com
 ***************************************************************************
 *                                                                         *
 *   This program is free software; you can redistribute it and/or modify  *
 *   it under the terms of the GNU General Public License as published by  *
 *   the Free Software Foundation; either version 2 of the License, or     *
 *   (at your option) any later version.                                   *
 *                                                                         *
 ***************************************************************************/
 
#ifndef QGSFILEDOWNLOADER_H
#define QGSFILEDOWNLOADER_H
 
#include "qgis.h"
#include "qgis_core.h"
 
#include <QFile>
#include <QNetworkReply>
#include <QObject>
#include <QUrl>
 
#ifndef QT_NO_SSL
#include <QSslError>
#endif

class CORE_EXPORT QgsFileDownloader : public QObject
{
    Q_OBJECT
  public:

    QgsFileDownloader( const QUrl &url, const QString &outputFileName, const QString &authcfg = QString(), bool delayStart = false, Qgis::HttpMethod httpMethod = Qgis::HttpMethod::Get, const QByteArray &data = QByteArray() );
 
  signals:
    void downloadCompleted( const QUrl &url );
    void downloadExited();

    void downloadCanceled();

    void downloadError( QStringList errorMessages );
    void downloadProgress( qint64 bytesReceived, qint64 bytesTotal );
 
  public slots:

    void cancelDownload();

    void startDownload();
 
  private slots:
    void onReadyRead();
    void onFinished();
    void onDownloadProgress( qint64 bytesReceived, qint64 bytesTotal );
    void onRequestTimedOut( QNetworkReply *reply );
 
#ifndef QT_NO_SSL

    void onSslErrors( QNetworkReply *reply, const QList<QSslError> &errors );
#endif
 
  protected:
    ~QgsFileDownloader() override;
 
  private:

    void error( const QStringList &errorMessages );
    void error( const QString &errorMessage );
    QUrl mUrl;
    QNetworkReply *mReply = nullptr;
    QFile mFile;
    bool mDownloadCanceled = false;
    Qgis::HttpMethod mHttpMethod = Qgis::HttpMethod::Get;
    QByteArray mData;
    QStringList mErrors;
    QString mAuthCfg;
};
 
#endif // QGSFILEDOWNLOADER_H