KviIrcLink.h

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#ifndef _KVI_IRCLINK_H_
#define _KVI_IRCLINK_H_
//=============================================================================
//
//   File : KviIrcLink.h
//   Creation date : Mon 03 May 2004 01:45:42 by Szymon Stefanek
//
//   This file is part of the KVIrc IRC client distribution
//   Copyright (C) 2004-2010 Szymon Stefanek <pragma at kvirc dot net>
//
//   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.
//
//   This program is distributed in the HOPE that it will be USEFUL,
//   but WITHOUT ANY WARRANTY; without even the implied warranty of
//   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
//   See the GNU General Public License for more details.
//
//   You should have received a copy of the GNU General Public License
//   along with this program. If not, write to the Free Software Foundation,
//   Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
//
//=============================================================================

#include "kvi_settings.h"
#include "KviQString.h"

#include <QObject>

class KviConsoleWindow;
class KviIrcServer;
class KviProxy;
class KviIrcSocket;
class KviDnsResolver;
class KviIrcConnection;
class KviIrcConnectionTarget;
class KviIrcConnectionTargetResolver;
class KviDataBuffer;
class KviMexLinkFilter;

class KVIRC_API KviIrcLink : public QObject
{
        friend class KviIrcConnection; // upper protocol in the stack
        friend class KviIrcSocket;     // lower protocol in the stack
        Q_OBJECT
public:
        enum State
        {
                Idle,       
                Connecting, 
                Connected   
        };

protected:
        KviIrcLink(KviIrcConnection * pConnection);

        ~KviIrcLink();

private:
        KviIrcConnection * m_pConnection;   // shallow, never null
        KviIrcConnectionTarget * m_pTarget; // shallow, never null
        KviConsoleWindow * m_pConsole;      // shallow, never null
        KviIrcSocket * m_pSocket;           // owned, may be null!
        KviMexLinkFilter * m_pLinkFilter;   // owned, may be null!

        State m_eState;

        char * m_pReadBuffer;
        unsigned int m_uReadBufferLen;
        unsigned int m_uReadPackets;

        KviIrcConnectionTargetResolver * m_pResolver; // owned
public:
        KviIrcSocket * socket() { return m_pSocket; };

        KviIrcConnection * connection() { return m_pConnection; };

        KviConsoleWindow * console() { return m_pConsole; };

        State state() { return m_eState; };
protected:
        virtual bool sendPacket(KviDataBuffer * pData);

        virtual void clearOutputQueue(bool bPrivateMessagesOnly);

        unsigned int outputQueueSize();

        void abort();

protected:
        void start();

protected:
        void processData(char * buffer, int iLength);

        void socketStateChange();
protected slots:
        void linkFilterDestroyed();

private:
        void destroySocket();

        void createSocket(const QString & szLinkFilterName);
signals:
        void connectionFailed();
private slots:
        void resolverTerminated();
};

#endif //_KVI_IRCLINK_H_