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Python-設計模式-中介者模式

Python
設計模式
中介者模式
class ChatRoom:
      def __init__(self):
         self.UserList = [] 
      def showMessage(self, User, Message): 
         pass 
      def Registor(self, User): 
         self.UserList.append(User)
      def UnRegistor(self, User): 
         self.UserList.remove(User) 

class CreateChatRoom(ChatRoom): 
      def showMessage(self, User, Message): 
         if User in self.UserList: 
             print(User.UserName,Message) 
         else: print('User Not in System') 

class User: 
      def __init__(self): 
         self.UserName = '' 
         self.Mediator = ChatRoom() 
      def SetChatRoom(self, chatRoom): 
         self.Mediator = chatRoom 
      def showMessage(self, user,Message): 
         self.Mediator.showMessage(user,Message) 

class GM(User): 
      def __init__(self): 
          self.UserName = 'GM' 
          self.Mediator = None 

class VIP(User): 
      def __init__(self): 
          self.UserName = 'VIP' 
          self.Mediator = None class 

Guest(User): 
      def __init__(self): 
         self.UserName = 'Guest' 
         self.Mediator = None 

Chat = CreateChatRoom() 
G = GM() G.SetChatRoom(Chat) 
V = VIP() V.SetChatRoom(Chat) 
Guest1 = Guest() 
Guest1.SetChatRoom(Chat) 
Chat.Registor(G) 
Chat.Registor(V) 
Chat.Registor(Guest1) 
G.showMessage(G, 'I am GM') 
V.showMessage(V, 'I am VIP') 
Guest1.showMessage(Guest1, 'I am Guest1') 

程式碼說明

定義中介者Chatroom,實作CreateChatRoom,透過中介者溝通物件,User,實作物件GM、VIP、Guest,以下為執行過程,需要注意的是真正的聊天室,是在不同執行緒以及不同台電腦上執行。

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