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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 #include "device/generic_sensor/platform_sensor.h" | |
6 | |
7 #include <utility> | |
8 | |
9 #include "device/generic_sensor/platform_sensor_configuration.h" | |
10 #include "device/generic_sensor/platform_sensor_provider.h" | |
11 | |
12 namespace device { | |
13 | |
14 PlatformSensor::PlatformSensor(mojom::SensorType type, | |
15 mojo::ScopedSharedBufferMapping mapping, | |
16 PlatformSensorProvider* provider) | |
17 : shared_buffer_mapping_(std::move(mapping)), | |
18 type_(type), | |
19 provider_(provider), | |
20 weak_factory_(this) {} | |
21 | |
22 PlatformSensor::~PlatformSensor() { | |
23 provider_->RemoveSensor(GetType()); | |
24 } | |
25 | |
26 mojom::SensorType PlatformSensor::GetType() const { | |
27 return type_; | |
28 } | |
29 | |
30 bool PlatformSensor::StartListening(Client* client, | |
31 const PlatformSensorConfiguration& config) { | |
32 DCHECK(clients_.HasObserver(client)); | |
33 if (!CheckSensorConfiguration(config)) | |
34 return false; | |
35 | |
36 auto& config_list = config_map_[client]; | |
37 config_list.push_back(config); | |
38 | |
39 if (UpdateSensor(config_map_)) | |
40 return true; | |
41 | |
42 auto iterator = std::find(config_list.begin(), config_list.end(), config); | |
43 if (iterator != config_list.end()) | |
44 config_list.erase(iterator); | |
Reilly Grant (use Gerrit)
2016/08/11 20:59:37
Can this be replaced by config_list.remove(config)
Mikhail
2016/08/12 10:21:48
Absolutely, thanks for the proposal!
| |
45 return false; | |
46 } | |
47 | |
48 bool PlatformSensor::StopListening(Client* client, | |
49 const PlatformSensorConfiguration& config) { | |
50 DCHECK(clients_.HasObserver(client)); | |
51 auto client_entry = config_map_.find(client); | |
52 if (client_entry == config_map_.end()) | |
53 return false; | |
54 | |
55 auto& config_list = client_entry->second; | |
56 auto config_entry = std::find(config_list.begin(), config_list.end(), config); | |
57 if (config_entry == config_list.end()) | |
58 return false; | |
59 | |
60 config_list.erase(config_entry); | |
61 | |
62 return UpdateSensor(config_map_); | |
63 } | |
64 | |
65 void PlatformSensor::UpdateSensor() { | |
66 UpdateSensor(config_map_); | |
67 } | |
68 | |
69 void PlatformSensor::AddClient(Client* client) { | |
70 DCHECK(client); | |
71 clients_.AddObserver(client); | |
72 } | |
73 | |
74 void PlatformSensor::RemoveClient(Client* client) { | |
75 DCHECK(client); | |
76 clients_.RemoveObserver(client); | |
77 auto client_entry = config_map_.find(client); | |
78 if (client_entry != config_map_.end()) { | |
79 config_map_.erase(client_entry); | |
80 UpdateSensor(config_map_); | |
81 } | |
82 } | |
83 | |
84 void PlatformSensor::NotifySensorReadingChanged() { | |
85 FOR_EACH_OBSERVER(Client, clients_, OnSensorReadingChanged()); | |
86 } | |
87 | |
88 void PlatformSensor::NotifySensorError() { | |
89 FOR_EACH_OBSERVER(Client, clients_, OnSensorError()); | |
90 } | |
91 | |
92 } // namespace device | |
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