undomanagerimpl.h

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#pragma once

#include <stack>
#include <vector>

#include "cad/const.h"

#include "cad/document/document.h"
#include "cad/document/undomanager.h"
#include "cad/events/commitprocessevent.h"
#include "cad/operations/undoable.h"

namespace lc {
    class UndoManagerImpl: public UndoManager {
        public:
            UndoManagerImpl(unsigned int maximumUndoLevels);

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

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

            virtual void removeUndoables();

        private:
            std::vector<operation::Undoable_SPtr> _unDoables; 
            std::stack<operation::Undoable_SPtr> _reDoables; 
            const unsigned int _maximumUndoLevels; 
        public:
            void on_CommitProcessEvent(const lc::CommitProcessEvent& event);
    };

    DECLARE_SHORT_SHARED_PTR(UndoManagerImpl)
}