/*
 * Copyright 2006-2012 Stephan Aßmus <superstippi@gmx.de>
 * Distributed under the terms of the MIT License.
 */

#ifndef UNDOABLE_EDIT_H
#define UNDOABLE_EDIT_H

#include <Referenceable.h>

class BString;
class EditContext;

class UndoableEdit : public BReferenceable {
public:
                                                                UndoableEdit();
        virtual                                         ~UndoableEdit();

        virtual status_t                        InitCheck();

        virtual status_t                        Perform(EditContext& context);
        virtual status_t                        Undo(EditContext& context);
        virtual status_t                        Redo(EditContext& context);

        virtual void                            GetName(BString& name);

        virtual bool                            UndoesPrevious(const UndoableEdit* previous);
        virtual bool                            CombineWithNext(const UndoableEdit* next);
        virtual bool                            CombineWithPrevious(
                                                                        const UndoableEdit* previous);

        inline  bigtime_t                       TimeStamp() const
                                                                        { return fTimeStamp; }

protected:
                        bigtime_t                       fTimeStamp;
};

typedef BReference<UndoableEdit> UndoableEditRef;

#endif // UNDOABLE_EDIT_H