Python: Mediator Pattern

DuMediator.py

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# 中介者模式  Mediator Pattern   import sys   # ParticipantReference: class User(object):     def __init__(self, med, name):         self.mediator = med         self.name = name       def send(self, msg):         pass       def receive(self, msg):         pass     # The Mediator: class ChatMediator(object):     def __init__(self):         self.users = []       def add_user(self, user):         self.users.append(user)       def send_message(self, msg, user):         for u in self.users:             if u != user:                 u.receive(msg)   # Participant class ConcreteUser(User):       def send(self, msg):         print(self.name + ": 发送消息: " + msg)         self.mediator.send_message(msg, self)       def receive(self, msg):         print(self.name + ": 收到的消息: " + msg)     # geovindu: two class ChatRoom(object):     '''Mediator class.'''       def __init__(self):         self.users = []       def add_user(self, user):         self.users.append(user)       def displayMessage(self, user, message):         print("[{} 说]: {}".format(user, message))     class User(object):     '''A class whose instances want to interact with each other.'''       def __init__(self, name):         self.name = name         self.chatRoom = ChatRoom()       def sendMessage(self, message):         self.chatRoom.displayMessage(self, message)       def __str__(self):         return self.name

 

 

main.py 调用

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# 中介者模式  Mediator Pattern mediator = DuMediator.ChatMediator() userDu = DuMediator.ConcreteUser(mediator,"GeovinDu") userDu2 = DuMediator.ConcreteUser(mediator,"geovindu") userDu3 = DuMediator.ConcreteUser(mediator,"涂聚文") userDu4 = DuMediator.ConcreteUser(mediator,"geovin")   mediator.add_user(userDu) mediator.add_user(userDu2) mediator.add_user(userDu3) mediator.add_user(userDu4)   userDu.send("Hello 2024 程序员节节日快乐.") print("\n") GeovinDu = DuMediator.User("GeovinDu") GeovinDu2 = DuMediator.User("geovindu") GeovinDu3 = DuMediator.User("涂聚文") GeovinDu4 = DuMediator.User("geovin") GeovinDu.sendMessage("你好，见到你真高兴.程序员节节日快乐") GeovinDu2.sendMessage("你好，见到你真高兴.程序员节节日快乐") GeovinDu3.sendMessage("你好，见到你真高兴.程序员节节日快乐") GeovinDu4.sendMessage("你好，见到你真高兴.程序员节节日快乐")

 

 

 

输出：

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GeovinDu: 发送消息: Hello 2024 程序员节节日快乐. geovindu: 收到的消息: Hello 2024 程序员节节日快乐. 涂聚文: 收到的消息: Hello 2024 程序员节节日快乐. geovin: 收到的消息: Hello 2024 程序员节节日快乐.     [GeovinDu 说]: 你好，见到你真高兴.程序员节节日快乐 [geovindu 说]: 你好，见到你真高兴.程序员节节日快乐 [涂聚文 说]: 你好，见到你真高兴.程序员节节日快乐 [geovin 说]: 你好，见到你真高兴.程序员节节日快乐