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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 | |
3 // found in the LICENSE file. | |
4 | |
5 #ifndef DEVICE_GEOLOCATION_LOCATION_ARBITRATOR_H_ | |
6 #define DEVICE_GEOLOCATION_LOCATION_ARBITRATOR_H_ | |
7 | |
8 #include "device/geolocation/geolocation_export.h" | |
9 | |
10 namespace device { | |
11 | |
12 // This class is responsible for handling updates from multiple underlying | |
13 // providers and resolving them to a single 'best' location fix at any given | |
14 // moment. | |
15 class DEVICE_GEOLOCATION_EXPORT LocationArbitrator { | |
16 public: | |
17 virtual ~LocationArbitrator() {}; | |
18 | |
19 // See more details in geolocation_provider. | |
20 virtual void StartProviders(bool enable_high_accuracy) = 0; | |
21 virtual void StopProviders() = 0; | |
22 | |
23 // Called everytime permission is granted to a page for using geolocation. | |
24 // This may either be through explicit user action (e.g. responding to the | |
25 // infobar prompt) or inferred from a persisted site permission. | |
26 // The arbitrator will inform all providers of this, which may in turn use | |
27 // this information to modify their internal policy. | |
28 virtual void OnPermissionGranted() = 0; | |
29 | |
30 // Returns true if this arbitrator has received at least one call to | |
31 // OnPermissionGranted(). | |
32 virtual bool HasPermissionBeenGranted() const = 0; | |
33 }; | |
34 | |
35 } // namespace device | |
36 | |
37 #endif // DEVICE_GEOLOCATION_LOCATION_ARBITRATOR_H_ | |
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