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hugin1/hugin/CommandHistory.h

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

#ifndef _Hgn1_COMMAND_H
class Command;
#endif

class CommandHistory
{
public:

    CommandHistory();

    virtual ~CommandHistory();

    void clear();

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

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

private:
    // our commands
    std::vector<Command*> commands;
    size_t nextCmd;

};


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

#endif // _COMMANDHISTORY_H

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