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1 // Copyright (c) 2012 The Chromium Authors. All rights reserved. | 1 // Copyright (c) 2012 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 CONTENT_BROWSER_GEOLOCATION_LOCATION_ARBITRATOR_IMPL_H_ | 5 #ifndef CONTENT_BROWSER_GEOLOCATION_LOCATION_ARBITRATOR_IMPL_H_ |
6 #define CONTENT_BROWSER_GEOLOCATION_LOCATION_ARBITRATOR_IMPL_H_ | 6 #define CONTENT_BROWSER_GEOLOCATION_LOCATION_ARBITRATOR_IMPL_H_ |
7 | 7 |
8 #include "base/callback_forward.h" | 8 #include "base/callback_forward.h" |
9 #include "base/memory/scoped_vector.h" | 9 #include "base/memory/scoped_vector.h" |
10 #include "base/strings/string16.h" | 10 #include "base/strings/string16.h" |
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63 | 63 |
64 private: | 64 private: |
65 // Takes ownership of |provider| on entry; it will either be added to | 65 // Takes ownership of |provider| on entry; it will either be added to |
66 // |providers_| or deleted on error (e.g. it fails to start). | 66 // |providers_| or deleted on error (e.g. it fails to start). |
67 void RegisterProvider(LocationProvider* provider); | 67 void RegisterProvider(LocationProvider* provider); |
68 void OnAccessTokenStoresLoaded( | 68 void OnAccessTokenStoresLoaded( |
69 AccessTokenStore::AccessTokenSet access_token_store, | 69 AccessTokenStore::AccessTokenSet access_token_store, |
70 net::URLRequestContextGetter* context_getter); | 70 net::URLRequestContextGetter* context_getter); |
71 void DoStartProviders(); | 71 void DoStartProviders(); |
72 | 72 |
73 // The providers call this function when a new position is available. | 73 // Gets called when a provider has a new position. |
74 void LocationUpdateAvailable(const LocationProvider* provider, | 74 void OnLocationUpdate(const LocationProvider* provider, |
75 const Geoposition& new_position); | 75 const Geoposition& new_position); |
76 | 76 |
77 // Returns true if |new_position| is an improvement over |old_position|. | 77 // Returns true if |new_position| is an improvement over |old_position|. |
78 // Set |from_same_provider| to true if both the positions came from the same | 78 // Set |from_same_provider| to true if both the positions came from the same |
79 // provider. | 79 // provider. |
80 bool IsNewPositionBetter(const Geoposition& old_position, | 80 bool IsNewPositionBetter(const Geoposition& old_position, |
81 const Geoposition& new_position, | 81 const Geoposition& new_position, |
82 bool from_same_provider) const; | 82 bool from_same_provider) const; |
83 | 83 |
84 scoped_refptr<AccessTokenStore> access_token_store_; | 84 scoped_refptr<AccessTokenStore> access_token_store_; |
85 LocationUpdateCallback callback_; | 85 LocationUpdateCallback arbitrator_update_callback_; |
86 LocationProvider::LocationProviderUpdateCallback provider_callback_; | 86 LocationProvider::LocationProviderUpdateCallback provider_update_callback_; |
87 ScopedVector<LocationProvider> providers_; | 87 ScopedVector<LocationProvider> providers_; |
88 bool use_high_accuracy_; | 88 bool use_high_accuracy_; |
89 // The provider which supplied the current |position_| | 89 // The provider which supplied the current |position_| |
90 const LocationProvider* position_provider_; | 90 const LocationProvider* position_provider_; |
91 bool is_permission_granted_; | 91 bool is_permission_granted_; |
92 // The current best estimate of our position. | 92 // The current best estimate of our position. |
93 Geoposition position_; | 93 Geoposition position_; |
94 | 94 |
95 // Tracks whether providers should be running. | 95 // Tracks whether providers should be running. |
96 bool is_running_; | 96 bool is_running_; |
97 | 97 |
98 DISALLOW_COPY_AND_ASSIGN(LocationArbitratorImpl); | 98 DISALLOW_COPY_AND_ASSIGN(LocationArbitratorImpl); |
99 }; | 99 }; |
100 | 100 |
101 // Factory functions for the various types of location provider to abstract | 101 // Factory functions for the various types of location provider to abstract |
102 // over the platform-dependent implementations. | 102 // over the platform-dependent implementations. |
103 LocationProvider* NewSystemLocationProvider(); | 103 LocationProvider* NewSystemLocationProvider(); |
104 | 104 |
105 } // namespace content | 105 } // namespace content |
106 | 106 |
107 #endif // CONTENT_BROWSER_GEOLOCATION_LOCATION_ARBITRATOR_IMPL_H_ | 107 #endif // CONTENT_BROWSER_GEOLOCATION_LOCATION_ARBITRATOR_IMPL_H_ |
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