/****************************************************************************

**

** All rights reserved.

** Contact: Nokia Corporation (qt-info@nokia.com)

**

** This file is part of the Qt Mobility Components.

**

** $QT_BEGIN_LICENSE:LGPL$

** No Commercial Usage

** This file contains pre-release code and may not be distributed.

** You may use this file in accordance with the terms and conditions

** contained in the Technology Preview License Agreement accompanying

** this package.

**

** GNU Lesser General Public License Usage

** Alternatively, this file may be used under the terms of the GNU Lesser

** General Public License version 2.1 as published by the Free Software

** Foundation and appearing in the file LICENSE.LGPL included in the

** packaging of this file.  Please review the following information to

** ensure the GNU Lesser General Public License version 2.1 requirements

** will be met: http://www.gnu.org/licenses/old-licenses/lgpl-2.1.html.

**

** In addition, as a special exception, Nokia gives you certain additional

** rights.  These rights are described in the Nokia Qt LGPL Exception

** version 1.1, included in the file LGPL_EXCEPTION.txt in this package.

**

** If you have questions regarding the use of this file, please contact

** Nokia at qt-info@nokia.com.

**

**

**

**

**

**

**

**

** $QT_END_LICENSE$

**

****************************************************************************/

#ifndef QNMEAPOSITIONINFOSOURCE_P_H

#define QNMEAPOSITIONINFOSOURCE_P_H

//

//  W A R N I N G

//  -------------

//

// This file is not part of the Qt API.  It exists purely as an

// implementation detail.  This header file may change from version to

// version without notice, or even be removed.

//

// We mean it.

//

#include "qnmeapositioninfosource.h"

#include "qgeopositioninfo.h"

#include <QObject>

#include <QQueue>

#include <QPointer>

QT_BEGIN_NAMESPACE

class QBasicTimer;

class QTimerEvent;

class QTimer;

QT_END_NAMESPACE

QT_BEGIN_HEADER

QTM_BEGIN_NAMESPACE

class QNmeaReader;

struct QPendingGeoPositionInfo {

    QGeoPositionInfo info;

    bool hasFix;

};

class QNmeaPositionInfoSourcePrivate : public QObject

{

    Q_OBJECT

public:

    explicit QNmeaPositionInfoSourcePrivate(QNmeaPositionInfoSource *parent);

    ~QNmeaPositionInfoSourcePrivate();

    void startUpdates();

    void stopUpdates();

    void requestUpdate(int msec);

    bool parsePosInfoFromNmeaData(const char *data,

                                  int size,

                                  QGeoPositionInfo *posInfo,

                                  bool *hasFix);

    void notifyNewUpdate(QGeoPositionInfo *update, bool fixStatus);

    QNmeaPositionInfoSource::UpdateMode m_updateMode;

    QPointer<QIODevice> m_device;

    QGeoPositionInfo m_lastUpdate;

    bool m_invokedStart;

public Q_SLOTS:

    void readyRead();

protected:

    void timerEvent(QTimerEvent *event);

private Q_SLOTS:

    void emitPendingUpdate();

    void sourceDataClosed();

    void updateRequestTimeout();

private:

    bool openSourceDevice();

    bool initialize();

    void prepareSourceDevice();

    void emitUpdated(const QGeoPositionInfo &update);

    QNmeaPositionInfoSource *m_source;

    QNmeaReader *m_nmeaReader;

    QBasicTimer *m_updateTimer;

    QGeoPositionInfo m_pendingUpdate;

    QDate m_currentDate;

    QTimer *m_requestTimer;

    bool m_noUpdateLastInterval;

    bool m_updateTimeoutSent;

    bool m_connectedReadyRead;

};

class QNmeaReader

{

public:

    explicit QNmeaReader(QNmeaPositionInfoSourcePrivate *sourcePrivate)

            : m_proxy(sourcePrivate) {}

    virtual ~QNmeaReader() {}

    virtual void readAvailableData() = 0;

protected:

    QNmeaPositionInfoSourcePrivate *m_proxy;

};

class QNmeaRealTimeReader : public QNmeaReader

{

public:

    explicit QNmeaRealTimeReader(QNmeaPositionInfoSourcePrivate *sourcePrivate);

    virtual void readAvailableData();

};

class QNmeaSimulatedReader : public QObject, public QNmeaReader

{

    Q_OBJECT

public:

    explicit QNmeaSimulatedReader(QNmeaPositionInfoSourcePrivate *sourcePrivate);

    ~QNmeaSimulatedReader();

    virtual void readAvailableData();

protected:

    virtual void timerEvent(QTimerEvent *event);

private Q_SLOTS:

    void simulatePendingUpdate();

private:

    bool setFirstDateTime();

    void processNextSentence();

    QQueue<QPendingGeoPositionInfo> m_pendingUpdates;

    int m_currTimerId;

    bool m_hasValidDateTime;

};

QTM_END_NAMESPACE

QT_END_HEADER

#endif