73 lines
1.5 KiB
C++
73 lines
1.5 KiB
C++
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/*
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* WeatherData.hpp
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*
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* Created on: 31 окт. 2021 г.
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* Author: alexander
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*/
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#pragma once
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#include "Subject.hpp"
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#include <list>
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#include <functional>
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#include <iostream>
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class WeatherData: public Subject
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{
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private:
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std::list<std::reference_wrapper<Observer>> observers;
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float temperature;
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float humidity;
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float pressure;
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public:
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void registerObserver(Observer &o) override
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{
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observers.push_back(o);
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}
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void removeObserver(Observer &o) override
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{
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observers.erase(std::find_if(observers.cbegin(), observers.cend(), [&](const std::reference_wrapper<Observer> &item)
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{
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return &item.get() == &o;
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}));
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std::cout << "Осталось в листе: " << observers.size() << " элементов" << std::endl;
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}
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void notifyObservers() override
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{
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for (Observer &observer : observers)
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{
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observer.update(temperature, humidity, pressure);
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}
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}
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void measurementsChanged()
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{
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notifyObservers();
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}
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void setMeasurements(float temperature, float humidity, float pressure)
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{
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this->temperature = temperature;
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this->humidity = humidity;
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this->pressure = pressure;
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measurementsChanged();
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}
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float getTemperature()
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{
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return temperature;
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}
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float getHumidity()
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{
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return humidity;
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}
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float getPressure()
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{
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return pressure;
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}
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};
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