设计模式-建造者模式

建造者 模式

builderModle.h

#pragma once

#include <iostream>
#include <string>
using namespace std;
class Phone {
public:
	Phone() {}
	~Phone() {}
	void setBattery(string batteryName) { cout << batteryName << endl; this->m_batteryName = batteryName; }
	void setScreen(string screenName) { cout << screenName << endl; this->m_screenName = screenName; }
	void setCamera(string cameraName) { cout << cameraName << endl; this->m_cameraName = cameraName; }
	void displayPhone() {
		cout << "battery:" << this->m_batteryName;
		cout << "screen:" << this->m_screenName;
		cout << "camera:" << this->m_cameraName;
	}
private:
	string m_batteryName;
	string m_screenName;
	string m_cameraName;

};
class Builder {
public:
	Builder() {}
	~Builder() {}
	//Builder(string EngerneerName){ }
	virtual void produceBattery() = 0;
	virtual void produceScreen() = 0;
	virtual void produceCamera() = 0;
	virtual Phone* getPhone() { return phone1; }
protected:
	Phone *phone1 = NULL;
};
class xiaomiBuilder : public Builder
{
public:
	xiaomiBuilder() { phone = new Phone; }
	void produceBattery() { phone->setBattery("xiaomi Battery"); }
	void produceScreen() { phone->setScreen("xiaomi Screen"); }
	void produceCamera() { phone->setCamera("xiaomi Camera"); }
	Phone* getPhone() { return phone; }
private:
	Phone *phone;
};
class Director {
public:
	Director() { }
	Director(Builder *builder) :m_builder(builder) { }
	void create(Builder *builder) {
		Builder * test = builder;
		test->produceBattery();
		test->produceCamera();
		test->produceScreen();
	}
	void create() {
		this->m_builder->produceBattery();
		this->m_builder->produceCamera();
		this->m_builder->produceScreen();
	}
	/*Director(const Director& director){
		builder = director.builder;
	}*/
private:
	Builder *m_builder = NULL;
};

主函数

main.cpp

#pragma once
#include <iostream>
#include "builderModle.h"
using namespace std;

//设计模式
int main() {
	//建造者模式
	Builder *xiaomiEngerneer = new xiaomiBuilder();
	Director *director = new Director(xiaomiEngerneer);
	//director->getbuilder(xiaomiEngerneer);
	director->create(xiaomiEngerneer);
	Phone *m_phone = xiaomiEngerneer->getPhone();
	m_phone->displayPhone();

	cout << "hello" << endl;
	return 0;
}

输出

xiaomi Battery
xiaomi Camera
xiaomi Screen
battery:xiaomi Batteryscreen:xiaomi Screencamera:xiaomi Camerahello

注意

1.注意类的相互包含
2.注意类声明和展开的顺序