/****************************************************************************+
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**+
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** Copyright (C) 2010 Nokia Corporation and/or its subsidiary(-ies).+
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** All rights reserved.+
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** Contact: Nokia Corporation (qt-info@nokia.com)+
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**+
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** This file is part of the tools applications of the Qt Toolkit.+
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**+
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** $QT_BEGIN_LICENSE:LGPL$+
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** No Commercial Usage+
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** This file contains pre-release code and may not be distributed.+
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** You may use this file in accordance with the terms and conditions+
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** contained in the Technology Preview License Agreement accompanying+
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** this package.+
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**+
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** GNU Lesser General Public License Usage+
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** Alternatively, this file may be used under the terms of the GNU Lesser+
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** General Public License version 2.1 as published by the Free Software+
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** Foundation and appearing in the file LICENSE.LGPL included in the+
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** packaging of this file.  Please review the following information to+
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** ensure the GNU Lesser General Public License version 2.1 requirements+
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** will be met: http://www.gnu.org/licenses/old-licenses/lgpl-2.1.html.+
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**+
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** In addition, as a special exception, Nokia gives you certain additional+
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** rights.  These rights are described in the Nokia Qt LGPL Exception+
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** version 1.1, included in the file LGPL_EXCEPTION.txt in this package.+
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**+
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** If you have questions regarding the use of this file, please contact+
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** Nokia at qt-info@nokia.com.+
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**+
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**+
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**+
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**+
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**+
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**+
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**+
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**+
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** $QT_END_LICENSE$+
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**+
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****************************************************************************/+
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+
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#ifndef TRKDEVICE_H+
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#define TRKDEVICE_H+
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+
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#include "callback.h"+
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+
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#include <QtCore/QObject>+
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#include <QtCore/QVariant>+
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#include <QtCore/QByteArray>+
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#include <QtCore/QSharedPointer>+
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+
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QT_BEGIN_NAMESPACE+
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class QIODevice;+
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QT_END_NAMESPACE+
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+
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namespace trk {+
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+
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struct TrkResult;+
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struct TrkMessage;+
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struct TrkDevicePrivate;+
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+
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/* TrkDevice: Implements a Windows COM or Linux device for+
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 * Trk communications. Provides synchronous write and asynchronous+
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 * read operation.+
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 * The serialFrames property specifies whether packets are encapsulated in+
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 * "0x90 <length>" frames, which is currently the case for serial ports. +
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 * Contains a write message queue allowing+
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 * for queueing messages with a notification callback. If the message receives+
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 * an ACK, the callback is invoked.+
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 * The special message TRK_WRITE_QUEUE_NOOP_CODE code can be used for synchronisation.+
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 * The respective  message will not be sent, the callback is just invoked. */+
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+
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enum { TRK_WRITE_QUEUE_NOOP_CODE = 0x7f };+
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+
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typedef trk::Callback<const TrkResult &> TrkCallback;+
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+
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class TrkDevice : public QObject+
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{+
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    Q_OBJECT+
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    Q_PROPERTY(bool serialFrame READ serialFrame WRITE setSerialFrame)+
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    Q_PROPERTY(bool verbose READ verbose WRITE setVerbose)+
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public:+
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    explicit TrkDevice(QObject *parent = 0);+
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    virtual ~TrkDevice();+
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+
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    bool open(const QString &port, QString *errorMessage);+
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    bool isOpen() const;+
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+
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    QString errorString() const;+
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+
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    bool serialFrame() const;+
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    void setSerialFrame(bool f);+
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+
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    int verbose() const;+
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    void setVerbose(int b);+
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+
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    // Enqueue a message with a notification callback.+
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    void sendTrkMessage(unsigned char code,+
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                        TrkCallback callBack = TrkCallback(),+
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                        const QByteArray &data = QByteArray(),+
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                        const QVariant &cookie = QVariant());+
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+
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    // Enqeue an initial ping+
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    void sendTrkInitialPing();+
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+
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    // Send an Ack synchronously, bypassing the queue+
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    bool sendTrkAck(unsigned char token);+
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+
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signals:+
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    void messageReceived(const trk::TrkResult &result);+
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    // Emitted with the contents of messages enclosed in 07e, not for log output+
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    void rawDataReceived(const QByteArray &data);+
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    void error(const QString &msg);+
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    void logMessage(const QString &msg);+
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+
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private slots:+
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    void slotMessageReceived(const trk::TrkResult &result, const QByteArray &a);+
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+
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protected slots:+
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    void emitError(const QString &msg);+
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    void emitLogMessage(const QString &msg);+
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+
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public slots:+
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    void close();+
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+
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private:+
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    void readMessages();+
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    TrkDevicePrivate *d;+
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};+
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+
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} // namespace trk+
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+
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#endif // TRKDEVICE_H+
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