| // Copyright 2016 The Chromium Authors. All rights reserved. |
| // Use of this source code is governed by a BSD-style license that can be |
| // found in the LICENSE file. |
| |
| #ifndef SensorUpdateNotificationStrategy_h |
| #define SensorUpdateNotificationStrategy_h |
| |
| #include "wtf/Functional.h" |
| |
| namespace blink { |
| |
| // This class encapsulates sensor reading update notification logic: |
| // the callback is invoked after client calls 'onSensorReadingChanged()' |
| // however considering the given sample frequency: |
| // guaranteed not to be called more often than expected. |
| class SensorUpdateNotificationStrategy { |
| public: |
| static std::unique_ptr<SensorUpdateNotificationStrategy> create( |
| double frequency, |
| std::unique_ptr<Function<void()>>); |
| |
| virtual void onSensorReadingChanged() = 0; |
| virtual void cancelPendingNotifications() = 0; |
| virtual ~SensorUpdateNotificationStrategy() {} |
| }; |
| |
| } // namespace blink |
| |
| #endif // SensorUpdateNotificationStrategy_h |