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| 1 // Copyright 2014 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 CONTENT_RENDERER_DEVICE_SENSORS_DEVICE_LIGHT_EVENT_PUMP_H_ |
| 6 #define CONTENT_RENDERER_DEVICE_SENSORS_DEVICE_LIGHT_EVENT_PUMP_H_ |
| 7 |
| 8 #include "base/memory/scoped_ptr.h" |
| 9 #include "content/common/device_sensors/device_light_data.h" |
| 10 #include "content/renderer/device_sensors/device_sensor_event_pump.h" |
| 11 #include "content/renderer/shared_memory_seqlock_reader.h" |
| 12 |
| 13 namespace blink { |
| 14 class WebDeviceLightListener; |
| 15 } |
| 16 |
| 17 namespace content { |
| 18 |
| 19 typedef SharedMemorySeqLockReader<DeviceLightData> |
| 20 DeviceLightSharedMemoryReader; |
| 21 |
| 22 class CONTENT_EXPORT DeviceLightEventPump : public DeviceSensorEventPump { |
| 23 public: |
| 24 DeviceLightEventPump(); |
| 25 explicit DeviceLightEventPump(int pump_delay_millis); |
| 26 virtual ~DeviceLightEventPump(); |
| 27 |
| 28 // Sets the listener to receive updates for device light data at |
| 29 // regular intervals. Returns true if the registration was successful. |
| 30 bool SetListener(blink::WebDeviceLightListener* listener); |
| 31 |
| 32 // RenderProcessObserver implementation. |
| 33 virtual bool OnControlMessageReceived(const IPC::Message& message) OVERRIDE; |
| 34 |
| 35 protected: |
| 36 // Methods overriden from base class DeviceSensorEventPump |
| 37 virtual void FireEvent() OVERRIDE; |
| 38 virtual bool InitializeReader(base::SharedMemoryHandle handle) OVERRIDE; |
| 39 virtual bool SendStartMessage() OVERRIDE; |
| 40 virtual bool SendStopMessage() OVERRIDE; |
| 41 |
| 42 blink::WebDeviceLightListener* listener_; |
| 43 scoped_ptr<DeviceLightSharedMemoryReader> reader_; |
| 44 double last_seen_data_; |
| 45 |
| 46 DISALLOW_COPY_AND_ASSIGN(DeviceLightEventPump); |
| 47 }; |
| 48 |
| 49 } // namespace content |
| 50 |
| 51 #endif // CONTENT_RENDERER_DEVICE_SENSORS_DEVICE_LIGHT_EVENT_PUMP_H_ |
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