common/include/QtNetwork/5.5.0/QtNetwork/private/qnetworkaccessftpbackend_p.h

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#ifndef QNETWORKACCESSFTPBACKEND_P_H
#define QNETWORKACCESSFTPBACKEND_P_H

//
//  W A R N I N G
//  -------------
//
// This file is not part of the Qt API.  It exists for the convenience
// of the Network Access API.  This header file may change from
// version to version without notice, or even be removed.
//
// We mean it.
//

#include "qnetworkaccessbackend_p.h"
#include "qnetworkaccesscache_p.h"
#include "qnetworkrequest.h"
#include "qnetworkreply.h"
#include "private/qftp_p.h"

#include "QtCore/qpointer.h"

#ifndef QT_NO_FTP

QT_BEGIN_NAMESPACE

class QNetworkAccessFtpIODevice;
class QNetworkAccessCachedFtpConnection;

class QNetworkAccessFtpBackend: public QNetworkAccessBackend
{
    Q_OBJECT
public:
    enum State {
        Idle,
        //Connecting,
        LoggingIn,
        CheckingFeatures,
        Statting,
        Transferring,
        Disconnecting
    };

    QNetworkAccessFtpBackend();
    virtual ~QNetworkAccessFtpBackend();

    virtual void open() Q_DECL_OVERRIDE;
    virtual void closeDownstreamChannel() Q_DECL_OVERRIDE;

    virtual void downstreamReadyWrite() Q_DECL_OVERRIDE;

    enum CacheCleanupMode {
        ReleaseCachedConnection,
        RemoveCachedConnection
    };

    void disconnectFromFtp(CacheCleanupMode mode = ReleaseCachedConnection);

public slots:
    void ftpConnectionReady(QNetworkAccessCache::CacheableObject *object);
    void ftpDone();
    void ftpReadyRead();
    void ftpRawCommandReply(int code, const QString &text);

private:
    friend class QNetworkAccessFtpIODevice;
    QPointer<QNetworkAccessCachedFtpConnection> ftp;
    QIODevice *uploadDevice;
    qint64 totalBytes;
    int helpId, sizeId, mdtmId;
    bool supportsSize, supportsMdtm;
    State state;
};

class QNetworkAccessFtpBackendFactory: public QNetworkAccessBackendFactory
{
public:
    virtual QStringList supportedSchemes() const Q_DECL_OVERRIDE;
    virtual QNetworkAccessBackend *create(QNetworkAccessManager::Operation op,
                                          const QNetworkRequest &request) const Q_DECL_OVERRIDE;
};

QT_END_NAMESPACE

#endif // QT_NO_FTP

#endif