《大话设计模式》的装饰模式的C++实现。

结构图：

Decorator.h:

#ifndef _DECORATOR_H
#define _DECORATOR_H

#include <iostream>
#include <string>
using namespace std;

//ConcreteComponent类
class CPerson
{
public:
	CPerson(){};
	CPerson(string str):m_sName(str){};
	virtual void Show();
protected:
private:
	string m_sName;
};

class CFinery : public CPerson
{
public:
	//CFinery(CPerson *tmp):m_pComponent(tmp){};
	void Decorate(CPerson *component);
	void Show();
protected:
private:
	CPerson *m_pComponent;
};

//ConcreteDecorator
class CTShirts :public CFinery
{
public:
	//CTShirts(CPerson *tmp):m_pComponent(tmp){};
	void Show();
protected:
private:
};

class CBigTrouser : public CFinery
{
public:
	//CBigTrouser(CPerson *tmp):m_pComponent(tmp){};
	void Show();
protected:
private:
};

#endif

#include "Decorator.h"

void CPerson::Show()
{
	cout<<"装饰人："<<m_sName<<endl;
}


void CFinery::Show()
{
	if (m_pComponent != NULL)
	{
		m_pComponent->Show();
	}
}

void CFinery::Decorate( CPerson *component )
{
	m_pComponent = component;
}
void CTShirts::Show()
{
	CFinery::Show();
	cout<<"TShirts"<<endl;
}

void CBigTrouser::Show()
{
	CFinery::Show();
	cout<<"垮裤"<<endl;
}

#include <iostream>
#include "Decorator.h"
using namespace std;


int main()
{	//装饰模式
	CPerson person("lin");
	CBigTrouser bigtrouser;
	CTShirts Tshirts;
	bigtrouser.Decorate(&person);
	Tshirts.Decorate(&bigtrouser);
	Tshirts.Show();

	return 0;
}

大话设计模式-装饰模式（C++)