menu.hpp

来自「深入浅出设计模式（书配套c++源代码)。包含20个设计模式的c++实现。」· HPP 代码 · 共 59 行

#ifndef	_HFDP_CPP_VISTOR_MENUS_MENU_HPP_
#define _HFDP_CPP_VISTOR_MENUS_MENU_HPP_

namespace HeadFirstDesignPatterns {
namespace Visitor {
namespace Menus {

class Menu : public MenuComponent {

	private: std::string _name;
	private: std::string _description;
	private: mutable std::vector< MenuComponent* > _menuComponents;
  
	public: explicit Menu( const std::string name, const std::string description ) :
		_name( name ), _description( description ) {
	}
	public: void accept( Visitor* visitor ) { assert( visitor );
		visitor->visit( this );
		std::vector< MenuComponent* >::const_iterator iterator = _menuComponents.begin();
		while( iterator != _menuComponents.end() ) {
			(*iterator)->accept( visitor );
			++iterator;
		}
	}
	public: float getHealthRating() const {
		float result = 0.0f;
		std::vector< MenuComponent* >::const_iterator iterator = _menuComponents.begin();
		while( iterator != _menuComponents.end() ) {
			result += (*iterator)->getHealthRating();
			++iterator;
		}
		return result;
	}
 	public: void add( MenuComponent* menuComponent ) { assert( menuComponent );
		_menuComponents.push_back( menuComponent );
	}
	public: bool isVegetarian() const {
		bool result = true;
		std::vector< MenuComponent* >::const_iterator iterator = _menuComponents.begin();
		while( iterator != _menuComponents.end() && true == result ) {
			result = (*iterator)->isVegetarian();
			++iterator;
		}
		return result;
	}
 	public: std::string toString() const {
		std::string result( _name );
		result.append( "\t" );
		result.append( _description );
		return result;
	}
};

} // namespace Menus
} // namespace Visitor
} // namespace HeadFirstDesignPatterns

#endif