39 lines
823 B
C++
39 lines
823 B
C++
/*
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* @Description:
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* @version:
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* @Author: 莫邪
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* @Date: 2023-11-02 09:26:30
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* @LastEditors: 莫邪
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* @LastEditTime: 2023-11-02 10:00:03
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*/
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#include <memory>
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#include "iostream"
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class TextMemento;
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// 编辑器
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class TextEdit {
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std::string text_;
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public:
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void AddText(const std::string &text);
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const std::string& GetText();
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std::shared_ptr<TextMemento> CreateMemento() ;
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void RestoreMemento(std::shared_ptr<TextMemento> memento) ;
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};
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// 备忘录(快照)
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class TextMemento {
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std::string text_;
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public:
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TextMemento(TextEdit &textEdit);
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std::string GetText() ;
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};
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// 快照管理
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class MementoManager {
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std::vector<std::shared_ptr<TextMemento>> memento_list_;
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public:
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void AddMemento(std::shared_ptr<TextMemento> memento) ;
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std::shared_ptr<TextMemento> GetLastMemento() ;
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void Undo() ;
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}; |