CSOUndoRedoManager.h

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/*************************************************************************************
**
** Copyright 2007, MeVis Medical Solutions AG
**
** The user may use this file in accordance with the license agreement provided with
** the Software or, alternatively, in accordance with the terms contained in a
** written agreement between the user and MeVis Medical Solutions AG.
**
** For further information use the contact form at https://www.mevislab.de/contact
**
**************************************************************************************/
 

 
#pragma once
 
#include "CSOUndoRedoCommands.h"
 
#include <mlUndoContext.h>
 
ML_START_NAMESPACE
 


class MLCSO_EXPORT CSOUndoRedoManager
{
 
public:

  enum UNDO_MODE
  {
    MODE_UNDOING = 0, 
    MODE_REDOING = 1, 
    MODE_NORMAL  = 2  
  };
 

  CSOUndoRedoManager(CSOList* csoList);

  ~CSOUndoRedoManager();

  void addCommand(CSOCommand* command);
  void popUndoCommand();

  void undo();
  void redo();

  void openGroup(const std::string& description = "Contour Operation");
  void closeGroup();
  void closeAllGroups();

  void clearUndo();
  void clearRedo();
  void clearAll();

  int getCurrentUndoGroupDepth() { return _currentGroupDepth; }

  bool canUndo() const;
  bool canRedo() const;

  int maxNumUndos() const;
  void setMaxNumUndos(int newMaxNumUndos);
  void setMaxNumUndos(MLint newMaxNumUndos) { setMaxNumUndos(static_cast<int>(newMaxNumUndos)); }

  int numUndos() const;
  int numRedos() const;

  bool isInUndoMode() const;
  bool isInRedoMode() const;

  void enableUndoRedo();
  void disableUndoRedo();

  inline bool isEnabled() { return _isEnabled; }

  void setUndoContext(ml::UndoContextPtr undoContext);
 
private:
  static void _undoContextCB(void* userData, BaseEvent* event);

  int _currentGroupDepth;

  bool _isEnabled;

  ml::UndoContextPtr _undoContext;

  ml::UndoContextPtr _defaultUndoContext;

  CSOList* _csoList;
};

 
ML_END_NAMESPACE