OLD | NEW |
1 // Copyright 2016 The Chromium Authors. All rights reserved. | 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 | 2 // Use of this source code is governed by a BSD-style license that can be |
3 // found in the LICENSE file. | 3 // found in the LICENSE file. |
4 | 4 |
5 #ifndef SensorPollingStrategy_h | 5 #ifndef SensorPollingStrategy_h |
6 #define SensorPollingStrategy_h | 6 #define SensorPollingStrategy_h |
7 | 7 |
8 #include "device/generic_sensor/public/interfaces/sensor_provider.mojom-blink.h" | 8 #include "device/generic_sensor/public/interfaces/sensor_provider.mojom-blink.h" |
9 #include "platform/Timer.h" | 9 #include "platform/Timer.h" |
10 #include "platform/heap/Handle.h" | 10 #include "platform/heap/Handle.h" |
11 #include "wtf/Functional.h" | 11 #include "wtf/Functional.h" |
12 | 12 |
13 namespace blink { | 13 namespace blink { |
14 | 14 |
15 // This class provides different polling behaviour depending on | 15 // This class provides different polling behaviour depending on |
16 // the given 'ReportingMode': | 16 // the given 'ReportingMode': |
17 // - for 'CONTINUOUS' mode the polling function is invoked periodically | 17 // - for 'CONTINUOUS' mode the polling function is invoked periodically |
18 // with the given polling period (on timer event). | 18 // with the given polling period (on timer event). |
19 // - for 'ONCHANGE' mode the polling function is invoked only after client | 19 // - for 'ONCHANGE' mode the polling function is invoked only after client |
20 // calls 'onSensorReadingChanged()' however considering the given polling peri
od: | 20 // calls 'onSensorReadingChanged()' however considering the given polling |
21 // guaranteed not to be called more often than expected. | 21 // period: guaranteed not to be called more often than expected. |
22 class SensorPollingStrategy { | 22 class SensorPollingStrategy { |
23 public: | 23 public: |
24 static std::unique_ptr<SensorPollingStrategy> create( | 24 static std::unique_ptr<SensorPollingStrategy> create( |
25 double pollingPeriod, | 25 double pollingPeriod, |
26 std::unique_ptr<Function<void()>> pollFunc, | 26 std::unique_ptr<Function<void()>> pollFunc, |
27 device::mojom::blink::ReportingMode); | 27 device::mojom::blink::ReportingMode); |
28 | 28 |
29 virtual void onSensorReadingChanged() {} | 29 virtual void onSensorReadingChanged() {} |
30 virtual void startPolling() = 0; | 30 virtual void startPolling() = 0; |
31 virtual void stopPolling() = 0; | 31 virtual void stopPolling() = 0; |
32 | 32 |
33 virtual ~SensorPollingStrategy(); | 33 virtual ~SensorPollingStrategy(); |
34 | 34 |
35 protected: | 35 protected: |
36 SensorPollingStrategy(double pollingPeriod, | 36 SensorPollingStrategy(double pollingPeriod, |
37 std::unique_ptr<Function<void()>>); | 37 std::unique_ptr<Function<void()>>); |
38 virtual void pollForData(TimerBase*) = 0; | 38 virtual void pollForData(TimerBase*) = 0; |
39 | 39 |
40 double m_pollingPeriod; | 40 double m_pollingPeriod; |
41 std::unique_ptr<Function<void()>> m_pollFunc; | 41 std::unique_ptr<Function<void()>> m_pollFunc; |
42 Timer<SensorPollingStrategy> m_timer; | 42 Timer<SensorPollingStrategy> m_timer; |
43 }; | 43 }; |
44 | 44 |
45 } // namespace blink | 45 } // namespace blink |
46 | 46 |
47 #endif // SensorPollingStrategy_h | 47 #endif // SensorPollingStrategy_h |
OLD | NEW |