60 lines
1.3 KiB
D
60 lines
1.3 KiB
D
module observer.weatherdata;
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import observer.subject;
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import observer.observer;
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import std.algorithm : remove, countUntil;
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class WeatherData : Subject
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{
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private:
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Observer[] observers;
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float temperature, humidity, pressure;
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public:
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override void registerObserver(Observer o)
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{
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observers ~= o;
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}
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override void removeObserver(Observer o)
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{
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// Вызовет ошибку в случае отсутствия элемента в массиве после его поиска
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// observers = observers.remove(observers.countUntil(o));
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observers = remove!(current => current == o)(observers);
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}
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override void notifyObservers()
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{
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foreach (Observer o; observers)
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{
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o.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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@property float getTemperature()
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{
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return temperature;
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}
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@property float getHumidity()
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{
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return humidity;
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}
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@property float getPressure()
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{
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return pressure;
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}
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}
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