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/***************************************************************
* Name: CanvasState.h
* Purpose: Defines container for stored canvas state
* Author: Michal Bližňák (michal.bliznak@tiscali.cz)
* Created: 2007-07-22
* Copyright: Michal Bližňák
* License: wxWidgets license (www.wxwidgets.org)
* Notes:
**************************************************************/
#ifndef _WXSFCANVASSTATE_H
#define _WXSFCANVASSTATE_H
#include <wx/wxprec.h>
#include <wx/wxsf/Defs.h>
#include <wx/wxsf/DiagramManager.h>
class wxSFShapeCanvas;
/*! \brief
* Class which stores one saved state of the shape canvas. The instaces of this
* class are managed by the wxSFCanvasHistory class which performs all related Undo/Redo
* operations.
* \sa wxSFShapeCanvas
*/
class wxSFCanvasState : public wxObject
{
friend class wxSFCanvasHistory;
public:
/*! \brief
* Constructor for 'histUSE_SERIALIZATION' mode.
* \param data Pointer to the stream buffer containig serialized content of the shape canvas
*/
wxSFCanvasState(wxStreamBuffer* data);
/*! \brief
* Constructor for 'histUSE_CLONING' mode.
* \param data Pointer to temporal data manager
*/
wxSFCanvasState(wxSFDiagramManager *data);
/*! \brief Destructor. */
~wxSFCanvasState(void);
protected:
// protected functions
/*! \brief
* Restore stored canvas state.
* \param canvas Pointer to the shape canvas which content will be replaced by the stored one
*/
void Restore(wxSFShapeCanvas* canvas);
// protected data members
/*! \brief Memory buffer used during the serialization/deserialization operations. */
wxMemoryBuffer m_dataBuffer;
/*! \brief Data manager used for storing of temporal canvas state. */
wxSFDiagramManager *m_pDataManager;
};
WX_DECLARE_LIST(wxSFCanvasState, StateList);
#endif //_WXSFCANVASSTATE_H
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