SOP/SOP_UndoModel.h

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/*
 * PROPRIETARY INFORMATION.  This software is proprietary to
 * Side Effects Software Inc., and is not to be reproduced,
 * transmitted, or disclosed in any way without written permission.
 *
 * Produced by: Leo Chan
 *
 *      Side Effects Software Inc
 *      477 Richmond Street West
 *      Toronto, Ontario
 *      Canada   M5V 3E7
 *      416-504-9876
 *
 * NAME: SOP_UndoModel.h ( SOP Library, C++)
 *
 * COMMENTS:    class to handle undos for hard and soft modelling
 *              changes
 */

#ifndef __SOP_UndoModel_h__
#define __SOP_UndoModel_h__

#include "SOP_API.h"
#include <UT/UT_Undo.h>
#include <UT/UT_String.h>

class SOP_SoftLockData;
class SOP_Node;
class SOP_SoftLockData;
class GU_Detail;

class SOP_API SOP_UndoModel : public UT_Undo
{
public:
             SOP_UndoModel();
    virtual ~SOP_UndoModel();

    void                init(unsigned char prev_lock,
                             unsigned char new_lock,
                             SOP_Node *sop, 
                             SOP_SoftLockData *prev_slockdata = 0, 
                             SOP_SoftLockData *new_slockdata = 0);

    virtual  void       undo();
    virtual  void       redo();

    void                 setName(const char *name) { myName.harden(name); }
    const char          *getName() { return (const char *)myName; }

protected:
    typedef enum 
    { 
        SOPUNDOMODEL_UNDO,
        SOPUNDOMODEL_REDO
    } SOP_UndoModelOperation;

    int                  hasSopUndo() { return myHasSopUndo; }

    void                 doUndo(void *modeler);
    void                 doRedo(void *modeler);

private:
    void                 loadForHardLock(SOP_UndoModelOperation operation,
                                         void *modeler);
    void                 loadForSoftLock(SOP_UndoModelOperation operation,
                                         void *modeler);
    void                       unlockSop(SOP_UndoModelOperation operation,
                                         void *modeler);

    // verb helper method
    void                 createSopSlockData( SOP_SoftLockData &loaded_diff, 
                                             SOP_Node *sop) const;

    int                  myOpId;

    UT_String            myOldHardLockFileName;
    UT_String            myNewHardLockFileName;
    UT_String            mySoftLockFileName;

    unsigned char        myPrevLock;
    unsigned char        myNewLock;

    int                  myHasSopUndo;

    UT_String            myName;
};
#endif

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