stylecontext.h

/*
 For general Scribus (>=1.3.2) copyright and licensing information please refer
 to the COPYING file provided with the program. Following this notice may exist
 a copyright and/or license notice that predates the release of Scribus 1.3.2
 for which a new license (GPL+exception) is in place.
 */
/***************************************************************************
*                                                                         *
*   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.                                   *
*                                                                         *
***************************************************************************/


#ifndef STYLECONTEXT_H
#define STYLECONTEXT_H

#include <cassert>
#include <QString>
#include <QList>
#include "scribusapi.h"
#include "observable.h"

class Style;


class SCRIBUS_API StyleContext : public Observable<StyleContext> {
    
public:
    StyleContext() 
    : m_version(0), m_cnt(0)
    {
//      qDebug() << QString("constr. %1 /%2").arg(reinterpret_cast<uint>(this),16).arg(m_level);
    }

    StyleContext(const StyleContext& o) 
    : m_version(o.m_version), m_cnt(0)
    {
//      qDebug() << QString("constr. cp %1 /%2").arg(reinterpret_cast<uint>(this),16).arg(m_level);
    }


    StyleContext& operator= (const StyleContext& o)
    {
        m_version = o.m_version;
        m_cnt = 0;
        return *this;
    }


    int version() const  { return m_version; }
    
    virtual bool contextContained(const StyleContext* context) const { return context == this; }
    virtual bool checkConsistency() const { return true; }
    virtual const Style* resolve(const QString& name) const = 0;
    virtual ~StyleContext() 
    {
//      qDebug(QString("destr. %1").arg(reinterpret_cast<uint>(this),16));
    }

    void invalidate(); 
    
    bool connect(QObject* receiver, const char *member ) const;
    bool disconnect(QObject* receiver, const char *member=0 ) const;
    
    
protected:
    int m_version;
    mutable int m_cnt;
};

Q_DECLARE_METATYPE(StyleContext*);

#endif