examples/Qt/qtbluetoothapp/connector.h

/*
 * Copyright (c) 2010 Nokia Corporation and/or its subsidiary(-ies). All rights reserved.
 *    
 * Redistribution and use in source and binary forms, with or without
 * modification, are permitted provided that the following conditions are met:
 *    
 *  * Redistributions of source code must retain the above copyright notice, this
 *    list of conditions and the following disclaimer.
 *  * Redistributions in binary form must reproduce the above copyright notice,
 *    this list of conditions and the following disclaimer in the documentation
 *    and/or other materials provided with the distribution.
 *  * Neither the name of Nokia Corporation nor the names of its contributors
 *    may be used to endorse or promote products derived from this software
 *    without specific prior written permission.
 *    
 *    THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
 *    AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
 *    IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
 *    DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE
 *    FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
 *    DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
 *    SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
 *    CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
 *    OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
 *    OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
 *    
 *    Description:  
 */

#ifndef CONNECTOR_H
#define CONNECTOR_H

// INCLUDES
#include <e32base.h>

#include <es_sock.h>
#include <btdevice.h>
#include <bt_sock.h>


class MConnectorObserver
{

public:
    virtual void HandleConnectorDataReceivedL(THostName aName, const TDesC& aData)=0;
    virtual void HandleConnectorErrorL(THostName aName, TInt aError)=0;
};


class CConnector : public CActive
{
public:

    static CConnector* NewL(MConnectorObserver& aObserver,
                            RSocketServ& aSocketServ);

    static CConnector* NewLC(MConnectorObserver& aObserver,
                             RSocketServ& aSocketServ);

    ~CConnector();

    TRequestStatus ConnectL(THostName aName, TBTDevAddr aAddr, TInt aPort);

    void Disconnect();

    void SendData(const TDesC8& /*aData*/);

protected:

    void RunL();

    void DoCancel();

    TInt RunError(TInt aError);
    
private:

    CConnector(MConnectorObserver& aObserver, RSocketServ& aSocketServ);

    void ConstructL();

    void HandleConnectorDataReceivedL(THostName aName, const TDesC& aData);

    void WaitAndReceive();

public: // data

    // name of the device connector connects
    THostName iName;
    // address of the device connector connects
    TBTDevAddr iAddr;
    // port of the device connector connects
    TInt iPort;
    // connecting socket
    RSocket iSock;
    // buffer holding received data
    TBuf8<40> iBuffer;
    // length of received data
    TSockXfrLength iLen;
    // reference to observer
    MConnectorObserver& iObserver;
    // socket server handle
    RSocketServ& iSocketServ;
    // the state of the connector
    enum TState
        {
        ENone = 1,
        EConnecting,
        EWaiting,
        ESending
        };

    TState iState;
};

#endif

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