CommandHistory.h

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// -*- c-basic-offset: 4 -*-
#ifndef _COMMANDHISTORY_H
#define _COMMANDHISTORY_H

#include <hugin_shared.h>
#include "Command.h"
#include <vector>

namespace PanoCommand
{
    class WXIMPEX CommandHistory
    {
    public:

        CommandHistory();

        virtual ~CommandHistory();

        void clear();

        void clearRedoQueue();

        void addCommand(PanoCommand *command, bool execute = true);

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

        bool canUndo() const;

        bool canRedo() const;

        std::string getLastCommandName() const;

        const PanoCommand* getLastCommand() const;
    private:
        // our commands
        std::vector<PanoCommand*> commands;
        size_t nextCmd;

    };


    class WXIMPEX GlobalCmdHist : public CommandHistory
    {
    public:
        static GlobalCmdHist & getInstance();
    protected:
        GlobalCmdHist();
    private:
        static GlobalCmdHist * instance;
    };

} // namespace

#endif // _COMMANDHISTORY_H