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1 // Copyright (c) 2013 The Chromium Authors. All rights reserved. | 1 // Copyright (c) 2013 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 #include "chrome/browser/extensions/api/location/location_manager.h" | 5 #include "chrome/browser/extensions/api/location/location_manager.h" |
6 | 6 |
7 #include <math.h> | 7 #include <math.h> |
8 #include <vector> | 8 #include <vector> |
9 | 9 |
10 #include "base/bind.h" | 10 #include "base/bind.h" |
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51 | 51 |
52 // A policy that controls sending an update below a distance threshold. | 52 // A policy that controls sending an update below a distance threshold. |
53 class DistanceBasedUpdatePolicy : public UpdatePolicy { | 53 class DistanceBasedUpdatePolicy : public UpdatePolicy { |
54 public: | 54 public: |
55 explicit DistanceBasedUpdatePolicy(double distance_update_threshold_meters) : | 55 explicit DistanceBasedUpdatePolicy(double distance_update_threshold_meters) : |
56 distance_update_threshold_meters_(distance_update_threshold_meters) | 56 distance_update_threshold_meters_(distance_update_threshold_meters) |
57 {} | 57 {} |
58 | 58 |
59 // UpdatePolicy Implementation | 59 // UpdatePolicy Implementation |
60 virtual bool ShouldSendUpdate(const content::Geoposition& position) const | 60 virtual bool ShouldSendUpdate(const content::Geoposition& position) const |
61 OVERRIDE { | 61 override { |
62 return !last_updated_position_.Validate() || | 62 return !last_updated_position_.Validate() || |
63 Distance(position.latitude, | 63 Distance(position.latitude, |
64 position.longitude, | 64 position.longitude, |
65 last_updated_position_.latitude, | 65 last_updated_position_.latitude, |
66 last_updated_position_.longitude) > | 66 last_updated_position_.longitude) > |
67 distance_update_threshold_meters_; | 67 distance_update_threshold_meters_; |
68 } | 68 } |
69 | 69 |
70 virtual void OnPositionReported(const content::Geoposition& position) | 70 virtual void OnPositionReported(const content::Geoposition& position) |
71 OVERRIDE { | 71 override { |
72 last_updated_position_ = position; | 72 last_updated_position_ = position; |
73 } | 73 } |
74 | 74 |
75 private: | 75 private: |
76 virtual ~DistanceBasedUpdatePolicy() {} | 76 virtual ~DistanceBasedUpdatePolicy() {} |
77 | 77 |
78 // Calculates the distance between two latitude and longitude points. | 78 // Calculates the distance between two latitude and longitude points. |
79 static double Distance(const double latitude1, | 79 static double Distance(const double latitude1, |
80 const double longitude1, | 80 const double longitude1, |
81 const double latitude2, | 81 const double latitude2, |
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110 }; | 110 }; |
111 | 111 |
112 // A policy that controls sending an update above a time threshold. | 112 // A policy that controls sending an update above a time threshold. |
113 class TimeBasedUpdatePolicy : public UpdatePolicy { | 113 class TimeBasedUpdatePolicy : public UpdatePolicy { |
114 public: | 114 public: |
115 explicit TimeBasedUpdatePolicy(double time_between_updates_ms) : | 115 explicit TimeBasedUpdatePolicy(double time_between_updates_ms) : |
116 time_between_updates_ms_(time_between_updates_ms) | 116 time_between_updates_ms_(time_between_updates_ms) |
117 {} | 117 {} |
118 | 118 |
119 // UpdatePolicy Implementation | 119 // UpdatePolicy Implementation |
120 virtual bool ShouldSendUpdate(const content::Geoposition&) const OVERRIDE { | 120 virtual bool ShouldSendUpdate(const content::Geoposition&) const override { |
121 return (base::Time::Now() - last_update_time_).InMilliseconds() > | 121 return (base::Time::Now() - last_update_time_).InMilliseconds() > |
122 time_between_updates_ms_; | 122 time_between_updates_ms_; |
123 } | 123 } |
124 | 124 |
125 virtual void OnPositionReported(const content::Geoposition&) OVERRIDE { | 125 virtual void OnPositionReported(const content::Geoposition&) override { |
126 last_update_time_ = base::Time::Now(); | 126 last_update_time_ = base::Time::Now(); |
127 } | 127 } |
128 | 128 |
129 private: | 129 private: |
130 virtual ~TimeBasedUpdatePolicy() {} | 130 virtual ~TimeBasedUpdatePolicy() {} |
131 | 131 |
132 base::Time last_update_time_; | 132 base::Time last_update_time_; |
133 const double time_between_updates_ms_; | 133 const double time_between_updates_ms_; |
134 | 134 |
135 DISALLOW_COPY_AND_ASSIGN(TimeBasedUpdatePolicy); | 135 DISALLOW_COPY_AND_ASSIGN(TimeBasedUpdatePolicy); |
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368 LocationManager::GetFactoryInstance() { | 368 LocationManager::GetFactoryInstance() { |
369 return g_factory.Pointer(); | 369 return g_factory.Pointer(); |
370 } | 370 } |
371 | 371 |
372 // static | 372 // static |
373 LocationManager* LocationManager::Get(content::BrowserContext* context) { | 373 LocationManager* LocationManager::Get(content::BrowserContext* context) { |
374 return BrowserContextKeyedAPIFactory<LocationManager>::Get(context); | 374 return BrowserContextKeyedAPIFactory<LocationManager>::Get(context); |
375 } | 375 } |
376 | 376 |
377 } // namespace extensions | 377 } // namespace extensions |
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