Python设计模式之代理模式实例详解

#!/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()