proxy_pattern.py

#!/usr/bin/env python
# -*- coding:utf-8 -*-

__author__ = 'Andy'

"""
大话设计模式

设计模式——代理模式
代理模式(Proxy Pattern):为其他对象提供一种代理以控制对这个对象的访问
实现:戴励 替 卓贾易 送礼物给 娇娇

模型:
#公共接口类
class InterFace:
	def request(self):
		pass
#真实类
class RealSubject(InterFace):
	def request(self):
		print 'RealSubject request'

#代理类 调用真实类的内部方法
class ProxySubject(InterFace)
	def request(self):
		self.real = RealSubject()
		self.real.request()
"""


# 送礼物接口
class GiveGift(object):
	# 送洋娃娃
	def GiveDolls(self):
		pass

	# 送花
	def GiveFlowers(self):
		pass

	# 送巧克力
	def GiveChocolate(self):
		pass


# 被追求者类
class SchoolGirl(object):
	def __init__(self, name):
		self.name = name


# 追求者类
class Pursuit(GiveGift):
	def __init__(self, Girl):
		self.Girl = Girl

	def GiveDolls(self):
		print self.Girl.name, '送你洋娃娃'

	def GiveFlowers(self):
		print self.Girl.name, '送你花'

	def GiveChocolate(self):
		print self.Girl.name, '送你巧克力'


# 代理类
class Proxy(GiveGift):
	def __init__(self, Girl):
		self.proxy = Pursuit(Girl)

	# 送洋娃娃
	def GiveDolls(self):
		self.proxy.GiveDolls()

	# 送花
	def GiveFlowers(self):
		self.proxy.GiveFlowers()

	# 送巧克力
	def GiveChocolate(self):
		self.proxy.GiveChocolate()


if __name__ == '__main__':
	jiaojiao = SchoolGirl('jiaojiao')
	daili = Proxy(jiaojiao)
	daili.GiveDolls()
	daili.GiveFlowers()
	daili.GiveChocolate()