qgsosmdownload.h

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/***************************************************************************
  qgsosmdownload.h
  --------------------------------------
  Date                 : January 2013
  Copyright            : (C) 2013 by Martin Dobias
  Email                : wonder dot sk at gmail 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 OSMDOWNLOAD_H
#define OSMDOWNLOAD_H


#include <QObject>
#include <QFile>
#include <QNetworkReply>

class QgsRectangle;

class ANALYSIS_EXPORT QgsOSMDownload : public QObject
{
    Q_OBJECT
  public:

    static QString defaultServiceUrl();

    static QString queryFromRect( const QgsRectangle& rect );

    QgsOSMDownload();
    ~QgsOSMDownload();

    void setServiceUrl( const QString& serviceUrl ) { mServiceUrl = serviceUrl; }
    QString serviceUrl() const { return mServiceUrl; }

    void setQuery( const QString& query ) { mQuery = query; }
    QString query() const { return mQuery; }

    void setOutputFileName( const QString& outputFileName ) { mFile.setFileName( outputFileName ); }
    QString outputFileName() const { return mFile.fileName(); }

    bool hasError() const { return !mError.isNull(); }
    QString errorString() const { return mError; }

    bool start();

    bool abort();

    bool isFinished() const;

  signals:
    void finished(); 
    void downloadProgress( qint64, qint64 ); 

  private slots:
    void onReadyRead();
    void onFinished();
    void onError( QNetworkReply::NetworkError err );

  private:
    QString mServiceUrl;
    QString mQuery;
    QString mError;

    QNetworkReply* mReply;
    QFile mFile;
};

#endif // OSMDOWNLOAD_H