memento.py

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from abc import ABC, abstractmethod
 
 
 
class IMemento(ABC):
    
    @property
    @abstractmethod
    def Name(self) -> str:
        pass
 
 
 
 
 
 
class Memento_TextObject:
    #++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++
    # Inner class Memento
 
    
    class Memento(IMemento):
        
        def __init__(self, name : str, text : str) -> None:
            self._name = name
            self._text = text
 
        
 
 
        
        @property
        def Text(self) -> str:
            return self._text
 
        
        @property
        def Name(self) -> str:
            return self._name
 
    # End of Inner class Memento
    #++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++
    #++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++
 
 
    
 
    
    @property
    def Text(self) -> str:
        return self._text
 
 
    
    @Text.setter
    def Text(self, value : str) -> None:
        self._text = value;
 
    
 
    
    def __init__(self, text : str) -> None:
        self._text = text;
 
    
 
    
    def GetMemento(self, operationName : str) -> IMemento:
        return Memento_TextObject.Memento(operationName, self._text)
 
 
    
    def RestoreMemento(self, memento : IMemento) -> None:
        if memento:
            self._text = memento.Text
 
 
    
    def ToString(self) -> str:
        return self._text;