35 lines
675 B
C++
35 lines
675 B
C++
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#pragma once
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#include <chrono>
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#include <cstdint>
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#include <vector>
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namespace platform
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{
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// Note: this class is NOT thread-safe.
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class BatteryLevelTracker
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{
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public:
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class Subscriber
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{
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public:
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virtual void OnBatteryLevelReceived(uint8_t level) = 0;
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protected:
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virtual ~Subscriber() = default;
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};
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void Subscribe(Subscriber * subscriber);
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void Unsubscribe(Subscriber * subscriber);
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void UnsubscribeAll();
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private:
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void RequestBatteryLevel();
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std::vector<Subscriber *> m_subscribers;
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std::chrono::system_clock::time_point m_lastRequestTime;
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uint8_t m_lastReceivedLevel = 0;
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bool m_isTrackingInProgress = false;
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};
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} // namespace platform
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