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/*
This file is part of the KDE project
Copyright (C) 2002 Fred Malabre <fmalabre@yahoo.com>
This library is free software; you can redistribute it and/or
modify it under the terms of the GNU Library General Public
License as published by the Free Software Foundation; either
version 2 of the License, or (at your option) any later version.
This library 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
Library General Public License for more details.
You should have received a copy of the GNU Library General Public License
along with this library; see the file COPYING.LIB. If not, write to
the Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor,
* Boston, MA 02110-1301, USA.
*/
#ifndef KSPREAD_LEADER_H
#define KSPREAD_LEADER_H
#include <KSpreadBaseWorker.h>
#include <KoFilterChain.h>
#include <kdebug.h>
#include <kspread_doc.h>
#include <KoDocumentInfo.h>
#include <kspread_map.h>
namespace KSpread
{
/**
* This class is a leader which will call the callbacks
* to the worker with your own implementation for your export filter.
*
* To write an export filter, just instanciate a leader and
* implement you own worker based on the BaseWorker.
*
* @short A Leader for an KSpread export filter
* @author Fred Malabre
* @see KSpreadBaseWorker
* @see KoFilter
*/
class Leader
{
public:
/**
* Default constructor.
* Call setWorker() before starting to convert the KSpread document.
*
* @param the filter chain of the filter using the lib.
*/
Leader(KoFilterChain *filterChain);
/**
* This constructor set up the Worker at initialization.
* convert can be called right away after instanciation of the Leader.
*
* @param the filter chain of the filter using the lib.
* @param implementation of a class derived from KSpreadWorker.
*/
Leader(KoFilterChain *filterChain, KSpreadBaseWorker *newWorker);
/**
* Default destructor.
* It does nothing.
*/
virtual ~Leader();
private:
KSpreadBaseWorker *m_worker;
KoFilterChain *m_filterChain;
int m_maxCellColumn;
int m_maxCellRow;
void updateMaxCells(KSpreadSheet *spreadSheet);
protected:
KSpreadBaseWorker *getWorker() const;
KoFilter::ConversionStatus doSpreadCell(Cell *spreadCell, int column, int row);
KoFilter::ConversionStatus doSpreadSheet(Sheet *spreadSheet);
KoFilter::ConversionStatus doSpreadBook(Doc *document);
KoFilter::ConversionStatus doInfo(KoDocumentInfo *info);
public:
/**
* Set your own implementation of the Worker.
*
* @param implementation of a class derived from KSpreadWorker.
*/
void setWorker(KSpreadBaseWorker *newWorker);
/**
* Start the conversion process.
* The callbacks of your Worker will be called at this time.
*
* @return status of the conversion.
*/
KoFilter::ConversionStatus convert();
};
} // namespace KSpread
#endif /* KSPREAD_LEADER_H */
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