clock_timer.h

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// Based on "Design Patterns: Elements of Reusable Object-Oriented Software"
// book by Erich Gamma, John Vlissides, Ralph Johnson, and Richard Helm 
//
// Created by Bartosz Rachwal. The National Institute of Advanced Industrial Science and Technology, Japan.

#ifndef OPERATIONAL_OBSERVER_CLOCK_TIMER_H_
#define OPERATIONAL_OBSERVER_CLOCK_TIMER_H_

#include "clock_tick_observer.h"
#include "clock_tick.h"

namespace operational
{
namespace observer
{
class ClockTimer
{
    public:
    ClockTimer();

    virtual ~ClockTimer();

    virtual int GetHours();
    virtual int GetMinutes();
    virtual int GetSeconds();

    void Tick();

    void Attach(ClockTickObserver* observer_interface) const;
    void Detach(ClockTickObserver* observer_interface) const;

    private:
    int hours_;
    int minutes_;
    int seconds_;

    ClockTick* clock_tick_;
};
}
}

#endif