lib/qeditsession.h

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/****************************************************************************
**
** Copyright (C) 2006-2009 fullmetalcoder <fullmetalcoder@hotmail.fr>
**
** This file is part of the Edyuk project <http://edyuk.org>
** 
** This file may be used under the terms of the GNU General Public License
** version 3 as published by the Free Software Foundation and appearing in the
** file GPL.txt included in the packaging of this file.
**
** This file is provided AS IS with NO WARRANTY OF ANY KIND, INCLUDING THE
** WARRANTY OF DESIGN, MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE.
**
****************************************************************************/

#ifndef _QEDIT_SESSION_H_
#define _QEDIT_SESSION_H_

#include "qce-config.h"

#include <QObject>
#include <QPointer>
#include <QStringList>

class QEditor;

class QDocument;
class QDocumentCommand;

class QDataStream;

class QCE_EXPORT QEditSession : public QObject
{
    Q_OBJECT
    
    public:
        QEditSession(QObject *p = 0);
        virtual ~QEditSession();
        
        int autoUpdateInterval() const;
        
        QString fileName() const;
        
    public slots:
        virtual void addEditor(QEditor *e);
        virtual void removeEditor(QEditor *e);
        
        virtual void updateData();
        
        virtual void setAutoUpdateInterval(int ms);
        
        virtual void setFileName(const QString& filename);
        
        virtual void save(QDataStream& s);
        virtual void restore(const QDataStream& s);
        
    protected:
        virtual void saved(QEditor *e);
        virtual void timerEvent(QTimerEvent *e);
        
        virtual QEditor* createEditor();
        
        struct Cursor
        {
            Cursor()
             : beginLine(-1), beginColumn(-1), endLine(-1), endColumn(-1) {}
            
            Cursor(int line, int column)
             : beginLine(line), beginColumn(column), endLine(-1), endColumn(-1) {}
            
            Cursor(const Cursor& c)
             : beginLine(c.beginLine), beginColumn(c.beginColumn), endLine(c.endLine), endColumn(c.endColumn) {}
            
            Cursor(const QDocumentCursor& c);
            
            int beginLine;
            int beginColumn;
            int endLine;
            int endColumn;
        };
        
        struct Command
        {
            enum Type
            {
                Nop,
                Insert,
                Remove
            };
            
            int type;
            Cursor cursor;
            QVariant data;
        };
        
        struct Document
        {
            QString fileName;
            QDateTime timeStamp;
            
            QList<Cursor> cursors;
            QHash<int, QList<int> > marks;
            
            int commandIndex;
            QStack<Command> commands;
        };
        
        int m_id;
        int m_delay;
        QString m_fileName;
        
        QList< QPointer<QEditor*> > m_editors;
        QList<Document*> m_sessionData;
};

#endif // ! _QEDIT_SESSION_H_

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