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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 #include "content/browser/device_sensors/device_orientation_message_filter.h" | |
| 6 | |
| 7 #include "content/browser/device_sensors/device_inertial_sensor_service.h" | |
| 8 #include "content/common/device_sensors/device_orientation_messages.h" | |
| 9 | |
| 10 namespace content { | |
| 11 | |
| 12 DeviceOrientationMessageFilter::DeviceOrientationMessageFilter() | |
| 13 : BrowserMessageFilter(DeviceOrientationMsgStart), | |
| 14 is_started_(false) { | |
| 15 } | |
| 16 | |
| 17 DeviceOrientationMessageFilter::~DeviceOrientationMessageFilter() { | |
| 18 DCHECK_CURRENTLY_ON(BrowserThread::IO); | |
| 19 if (is_started_) | |
| 20 DeviceInertialSensorService::GetInstance()->RemoveConsumer( | |
| 21 CONSUMER_TYPE_ORIENTATION); | |
| 22 } | |
| 23 | |
| 24 bool DeviceOrientationMessageFilter::OnMessageReceived( | |
| 25 const IPC::Message& message) { | |
| 26 bool handled = true; | |
| 27 IPC_BEGIN_MESSAGE_MAP(DeviceOrientationMessageFilter, message) | |
| 28 IPC_MESSAGE_HANDLER(DeviceOrientationHostMsg_StartPolling, | |
| 29 OnDeviceOrientationStartPolling) | |
| 30 IPC_MESSAGE_HANDLER(DeviceOrientationHostMsg_StopPolling, | |
| 31 OnDeviceOrientationStopPolling) | |
| 32 IPC_MESSAGE_UNHANDLED(handled = false) | |
| 33 IPC_END_MESSAGE_MAP() | |
| 34 return handled; | |
| 35 } | |
| 36 | |
| 37 void DeviceOrientationMessageFilter::OnDeviceOrientationStartPolling() { | |
| 38 DCHECK(!is_started_); | |
| 39 if (is_started_) | |
| 40 return; | |
| 41 is_started_ = true; | |
| 42 DeviceInertialSensorService::GetInstance()->AddConsumer( | |
| 43 CONSUMER_TYPE_ORIENTATION); | |
| 44 DidStartDeviceOrientationPolling(); | |
| 45 } | |
| 46 | |
| 47 void DeviceOrientationMessageFilter::OnDeviceOrientationStopPolling() { | |
| 48 DCHECK(is_started_); | |
| 49 if (!is_started_) | |
| 50 return; | |
| 51 is_started_ = false; | |
| 52 DeviceInertialSensorService::GetInstance()->RemoveConsumer( | |
| 53 CONSUMER_TYPE_ORIENTATION); | |
| 54 } | |
| 55 | |
| 56 void DeviceOrientationMessageFilter::DidStartDeviceOrientationPolling() { | |
| 57 Send(new DeviceOrientationMsg_DidStartPolling( | |
| 58 DeviceInertialSensorService::GetInstance()-> | |
| 59 GetSharedMemoryHandleForProcess( | |
| 60 CONSUMER_TYPE_ORIENTATION, | |
| 61 PeerHandle()))); | |
| 62 } | |
| 63 | |
| 64 } // namespace content | |
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