CH/CH_UndoTimeGroup.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:
 *      Dale Ducharme   
 *      Side Effects Software Inc
 *      477 Richmond Street West
 *      Toronto, Ontario
 *      Canada   M5V 3E7
 *      416-504-9876
 *
 * NAME:        CH_UndoTimeGroup.h ( OP Library, C++)
 *
 * COMMENTS:    This class handles the undoing of time group 
 *              operations. 
 *              
 *              This class handles the updating of internal data
 *              when a channel group operation is undone/redone.
 */

#ifndef __CH_UndoTimeGroup__
#define __CH_UndoTimeGroup__

#include "CH_API.h"
#include <UT/UT_Undo.h>

class CH_TimeGroup;

enum CH_UndoTimeGroupOperation
{
    CH_UNDO_CREATE,
    CH_UNDO_MODIFY,
    CH_UNDO_DELETE
};

class CH_API CH_UndoTimeGroup : public UT_Undo
{
public:
                 CH_UndoTimeGroup(CH_TimeGroup *, CH_UndoTimeGroupOperation);
    virtual     ~CH_UndoTimeGroup();

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

private:
    void         swap();

    UT_String                    myGroupName;
    float                        myTime;
    CH_UndoTimeGroupOperation    myOperation;
};

#endif

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