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| 1 // Copyright 2016 The Chromium Authors. All rights reserved. |
| 2 // Use of this source code is governed by a BSD-style license that can be |
| 3 // found in the LICENSE file. |
| 4 |
| 5 #ifndef SensorUpdateNotificationStrategy_h |
| 6 #define SensorUpdateNotificationStrategy_h |
| 7 |
| 8 #include "wtf/Functional.h" |
| 9 |
| 10 namespace blink { |
| 11 |
| 12 // This class encapsulates sensor reading update notification logic: |
| 13 // the callback is invoked after client calls 'onSensorReadingChanged()' |
| 14 // however considering the given sample frequency: |
| 15 // guaranteed not to be called more often than expected. |
| 16 class SensorUpdateNotificationStrategy { |
| 17 public: |
| 18 static std::unique_ptr<SensorUpdateNotificationStrategy> create( |
| 19 double frequency, |
| 20 std::unique_ptr<Function<void()>>); |
| 21 |
| 22 virtual void onSensorReadingChanged() = 0; |
| 23 virtual void cancelPendingNotifications() = 0; |
| 24 virtual ~SensorUpdateNotificationStrategy() {} |
| 25 }; |
| 26 |
| 27 } // namespace blink |
| 28 |
| 29 #endif // SensorUpdateNotificationStrategy_h |
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