//  Copyright (C) 2007-2010  CEA/DEN, EDF R&D, OPEN CASCADE
//
//  Copyright (C) 2003-2007  OPEN CASCADE, EADS/CCR, LIP6, CEA/DEN,
//  CEDRAT, EDF R&D, LEG, PRINCIPIA R&D, BUREAU VERITAS
//
//  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 2.1 of the License.
//
//  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
//  Lesser General Public License for more details.
//
//  You should have received a copy of the GNU Lesser General Public
//  License along with this library; if not, write to the Free Software
//  Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307 USA
//
//  See http://www.salome-platform.org/ or email : webmaster.salome@opencascade.com
//

#ifndef CAF_STUDY_H
#define CAF_STUDY_H

#include "CAF.h"

#include "SUIT_Study.h"

#include <TDocStd_Document.hxx>

class CAF_Application;
class Handle(TDocStd_Application);

#if defined WIN32
#pragma warning ( disable: 4251 )
#endif

class CAF_EXPORT CAF_Study : public SUIT_Study
{
  Q_OBJECT

public:
  CAF_Study( SUIT_Application* theApp );
  CAF_Study( SUIT_Application* theApp, Handle(TDocStd_Document)& aStdDoc );
  virtual ~CAF_Study();

  virtual bool                createDocument( const QString& );
  virtual void                closeDocument( bool = true );
  virtual bool                openDocument( const QString& );

  virtual bool                saveDocumentAs( const QString& );

  bool                        isSaved() const;
  bool                        isModified() const;
  void                        doModified( bool = true );
  void                        undoModified();
  void                        clearModified();
  
  bool                        undo();
  bool                        redo();
  bool                        canUndo() const;
  bool                        canRedo() const;
  QStringList                 undoNames() const;
  QStringList                 redoNames() const;
  
  Handle(TDocStd_Document)    stdDoc() const;

protected:
  Handle(TDocStd_Application) stdApp() const;
  CAF_Application*            cafApplication() const;

  virtual bool                openTransaction();
  virtual bool                abortTransaction();
  virtual bool                hasTransaction() const;
  virtual bool                commitTransaction( const QString& = QString() );

  virtual void                setStdDoc( Handle(TDocStd_Document)& );

private:
  Handle(TDocStd_Document)    myStdDoc;
  int                         myModifiedCnt;

  friend class CAF_Operation;
};

#if defined WIN32
#pragma warning ( default: 4251 )
#endif

#endif
