/*
    task.h - Kopete Oscar Protocol

    Copyright (c) 2004 Matt Rogers <mattr@kde.org>
    Based on code copyright (c) 2004 SuSE Linux AG <http://www.suse.com>

    Based on Iris, Copyright (C) 2003  Justin Karneges

    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 OSCAR_TASK_H
#define OSCAR_TASK_H

#include <tqobject.h>

#include "oscartypes.h"


class TQString;
class Buffer;
class Connection;
class Transfer;

using namespace Oscar;


class Task : public TQObject
{
	Q_OBJECT
  
public:
	enum { ErrDisc };
	Task(Task *parent);
	Task( Connection*, bool isRoot );
	virtual ~Task();

	Task *parent() const;
	Connection* client() const;
	Transfer *transfer() const;
	
	long id() const;
	void setId();

	bool success() const;
	int statusCode() const;
	const TQString & statusString() const;

	void go( bool autoDelete = false );
	
	/** 
	 * Allows a task to examine an incoming Transfer and decide whether to 'take' it
	 * for further processing.
	 */
	virtual bool take( Transfer* transfer );
	void safeDelete();

	/**
	 * Direct setter for Tasks which don't have any fields
	 */
	void setTransfer( Transfer * transfer );
	
signals:
	void finished();

protected:
	virtual void onGo();
	virtual void onDisconnect();
	void setId( TQ_UINT32 id );
	void send( Transfer * request );
	void setSuccess( int code=0, const TQString &str="" );
	void setError( int code=0, const TQString &str="" );
// 	void debug( const char *, ... );
	void debug( const TQString & );
	
	/**
	 * Used in take() to check if the offered transfer is for this Task
	 * @return true if this Task should take the Transfer.  Default impl always returns false.
	 */
	virtual bool forMe( const Transfer * transfer ) const;
	
	/**
	 * Creates a transfer with the given flap, snac, and buffer
	 */
	Transfer* createTransfer( FLAP f, SNAC s, Buffer* buffer );
	
	/**
	 * Creates a transfer with the given flap and buffer
	 */
	Transfer* createTransfer( FLAP f, Buffer* buffer );
	
	/**
	 * Creates a transfer with the given buffer
	 */
	Transfer* createTransfer( Buffer* buffer );
	
private slots:
	void clientDisconnected();
	void done();

private:
	void init();

	class TaskPrivate;
	TaskPrivate *d;
};

#endif