40 lines
855 B
C++
40 lines
855 B
C++
#pragma once
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#include "common.hpp"
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class WaterHeater;
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class Observer // 观察者的抽象基类
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{
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public:
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virtual void Update(WaterHeater* waterHeater) const = 0;
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};
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class WashingMode :public Observer // 观察者类
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{
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public:
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virtual void Update(WaterHeater* waterHeater) const;
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};
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class DrinkingMode :public Observer // 观察者类
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{
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public:
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virtual void Update(WaterHeater* waterHeater) const;
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};
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class WaterHeater // 被观察的类
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{
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public:
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WaterHeater(int temperature = 25) :m_temperature(temperature) {};
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int getTempetature();
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void setTemperature(int temperature);
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virtual void HandleObserver(); // 通知观察者
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bool RegisterObserver(Observer* inObserver); // 添加监听（观察）者
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bool UnRegisterObserver(Observer* inObserver); // 删除监听（观察）者
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protected:
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int m_temperature;
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vector<Observer*> m_Observers;
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};
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