kopetemessagehandlerchain.h

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/*
    kopetefilterchain.h - Kopete Message Filter Chain

    Copyright (c) 2004      by Richard Smith         <kde@metafoo.co.uk>
    Kopete    (c) 2002-2004 by the Kopete developers <kopete-devel@kde.org>

    *************************************************************************
    *                                                                       *
    * This library is free software; you can redistribute it and/or         *
    * modify it under the terms of the GNU Lesser General Public            *
    * License as published by the Free Software Foundation; either          *
    * version 2 of the License, or (at your option) any later version.      *
    *                                                                       *
    *************************************************************************
*/

#ifndef KOPETEMESSAGEHANDLERCHAIN_H
#define KOPETEMESSAGEHANDLERCHAIN_H

#include <QtCore/QObject>

#include <kdemacros.h>
#include <ksharedptr.h>
#include "kopetemessage.h"
#include "kopetetask.h"

namespace Kopete
{

class MessageEvent;
class MessageHandler;
class ProcessMessageTask;

class MessageHandlerChain : public QObject, private KShared
{
    Q_OBJECT
public:
    friend class KSharedPtr<MessageHandlerChain>;
    typedef KSharedPtr<MessageHandlerChain> Ptr;
    
    static Ptr create( ChatSession *manager, Message::MessageDirection direction );

    ProcessMessageTask *processMessage( const Message &message );
    int capabilities();
    
private:
    MessageHandlerChain();
    ~MessageHandlerChain();
    
    friend class ProcessMessageTask;
    class Private;
    Private * const d;
};

class ProcessMessageTask : public Task
{
    Q_OBJECT
public:
    MessageEvent *event();
    
public slots:
    void start();
    void slotDone();
    void kill( bool );
    
protected:
    // Avoid compiler warning about QObject::event
    using Task::event;
private:
    ProcessMessageTask(MessageHandlerChain::Ptr, MessageEvent *event);
    ~ProcessMessageTask();
    
    friend class MessageHandlerChain;
    class Private;
    Private * const d;
};

}

#endif // KOPETEMESSAGEHANDLERCHAIN_H

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