quackcounter.hpp

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#ifndef	_HFDP_CPP_COMPOUND_COMPOSITE_QUACK_COUNTER_HPP_
#define _HFDP_CPP_COMPOUND_COMPOSITE_QUACK_COUNTER_HPP_

#include "DuckSimulator.hpp"

namespace HeadFirstDesignPatterns {
namespace Compound {
namespace Composite {

class QuackCounter : public Quackable {

	private: std::auto_ptr< Quackable > _duck;
	private: static int _numberOfQuacks;
  
	private: QuackCounter( const QuackCounter& ); // Disable copy constructor
	private: void operator=( const QuackCounter& ); // Disable assignment operator

	public: explicit QuackCounter( Quackable* duck ) :
		_duck( duck ) { assert( duck );
	}
	public: void quack() const {
		_duck->quack();
		_numberOfQuacks++;
	}
	public: static int getQuacks() {
		return _numberOfQuacks;
	}
	public: std::string toString() const {
		return _duck->toString();
	}
};

} // namespace Composite
} // namespace Compound
} // namespace HeadFirstDesignPatterns

#endif