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Python-設計模式-命令模式

Python
設計模式
命令模式


class Cook: 
   def cook(self, food): 
      print('cook ' + food) 

 class Invoke: 
   def __init__(self): 
      self.CommandList = [] 
   def AddOrder(self, command): 
      self.CommandList.append(command) 
   def CancelOrder(self, command): 
      self.CommandList.remove(Command) 
   def SendOrder(self): 
      for i in self.CommandList: 
         i.excute() 
         self.CommandList.clear() 

 class Command: 
   def excute(self): 
      pass 

 class CreateCommand1: 
   def __init__(self): 
      self.cook = None 
      self.food = 'pig' 
   def SetCook(self,cook): 
      self.cook = cook 
   def excute(self): 
      self.cook.cook(self.food) 

 class CreateCommand2: 
   def __init__(self): 
      self.cook = None 
      self.food = 'beef' 
   def SetCook(self,cook): 
      self.cook = cook 
   def excute(self): 
      self.cook.cook(self.food) 

 C1 = Cook() 
I = Invoke() 
command1 = CreateCommand1() 
command2 = CreateCommand2() 
command1.SetCook(C1) 
command2.SetCook(C1) 
I.AddOrder(command1) 
I.AddOrder(command2) 
I.SendOrder()

程式碼說明

定義廚師，定義Invoke，定義命令介面，定義命令，建立廚師、Invoke、命令、設定廚師、把命令設定到invoke中，執行命令
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