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python-設計模式-裝飾模式

python
設計模式
裝飾模式


class Hamberger: 
   def __init__(self): 
      self.price = 0 
      self.meat = '' 
   def GetPrice(self): 
      print(self.price) 

class PigHamberger(Hamberger): 
   def __init__(self): 
      self.price = 35 
      self.meat = 'Pig' 

class BeefHamberger(Hamberger): 
    def __init__(self): 
       self.price = 45 
       self.meat = 'Beef' 

class Decorator(Hamberger): 
    def __init__(self, hamberger): 
       self.price = hamberger.price 
       self.meat = hamberger.meat 

class EggDecorator(Decorator):
    def __init__(self,hamberger): 
       super().__init__(hamberger) 
    def GetPrice(self): 
       self.price += 5 
       self.meat = self.meat + ' with Egg' 
       print(self.price) 

class CheeseDecorator(Decorator): 
    def __init__(self, hamberger): 
       super().__init__(hamberger) 
    def GetPrice(self): 
       self.price += 5 
       self.meat = self.meat + ' with Cheese' 
       print(self.price) 

pigHamberger = PigHamberger() 
pigHamberger.GetPrice() 
EGG1 = EggDecorator(pigHamberger) 
EGG1.GetPrice() print(EGG1.meat) 
EGG2 = EggDecorator(EGG1) 
EGG2.GetPrice() 
print(EGG2.meat) 
C = CheeseDecorator(EGG2) 
C.GetPrice() print(C.meat) 
beefHamberger = BeefHamberger() 
beefHamberger.GetPrice() 
EGG1 = EggDecorator(beefHamberger) 
EGG1.GetPrice() 
print(EGG1.meat) 
EGG2 = EggDecorator(EGG1) 
EGG2.GetPrice() 
print(EGG2.meat) 
C = CheeseDecorator(EGG2) 
C.GetPrice() 
print(C.meat) 

程式碼說明

定義漢堡類別,定義豬肉口味漢堡,定義牛肉口味漢堡,定義裝飾模式,定義加蛋,定義加起司
以下為測試

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