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1 // Copyright 2014 The Chromium Authors. All rights reserved. | 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 | 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 COMPONENTS_SYNC_DEVICE_INFO_DEVICE_INFO_TRACKER_H_ | 5 #ifndef COMPONENTS_SYNC_DEVICE_INFO_DEVICE_INFO_TRACKER_H_ |
6 #define COMPONENTS_SYNC_DEVICE_INFO_DEVICE_INFO_TRACKER_H_ | 6 #define COMPONENTS_SYNC_DEVICE_INFO_DEVICE_INFO_TRACKER_H_ |
7 | 7 |
8 #include <memory> | 8 #include <memory> |
9 #include <string> | 9 #include <string> |
10 | 10 |
11 #include "components/sync/device_info/device_info.h" | 11 #include "components/sync/device_info/device_info.h" |
12 | 12 |
13 namespace sync_driver { | 13 namespace syncer { |
14 | 14 |
15 // Interface for tracking synced DeviceInfo. | 15 // Interface for tracking synced DeviceInfo. |
16 class DeviceInfoTracker { | 16 class DeviceInfoTracker { |
17 public: | 17 public: |
18 virtual ~DeviceInfoTracker() {} | 18 virtual ~DeviceInfoTracker() {} |
19 | 19 |
20 // Observer class for listening to device info changes. | 20 // Observer class for listening to device info changes. |
21 class Observer { | 21 class Observer { |
22 public: | 22 public: |
23 virtual void OnDeviceInfoChange() = 0; | 23 virtual void OnDeviceInfoChange() = 0; |
24 }; | 24 }; |
25 | 25 |
26 // Returns true when DeviceInfo datatype is enabled and syncing. | 26 // Returns true when DeviceInfo datatype is enabled and syncing. |
27 virtual bool IsSyncing() const = 0; | 27 virtual bool IsSyncing() const = 0; |
28 // Gets DeviceInfo the synced device with specified client ID. | 28 // Gets DeviceInfo the synced device with specified client ID. |
29 // Returns an empty unique_ptr if device with the given |client_id| hasn't | 29 // Returns an empty unique_ptr if device with the given |client_id| hasn't |
30 // been synced. | 30 // been synced. |
31 virtual std::unique_ptr<DeviceInfo> GetDeviceInfo( | 31 virtual std::unique_ptr<DeviceInfo> GetDeviceInfo( |
32 const std::string& client_id) const = 0; | 32 const std::string& client_id) const = 0; |
33 // Gets DeviceInfo for all synced devices (including the local one). | 33 // Gets DeviceInfo for all synced devices (including the local one). |
34 virtual std::vector<std::unique_ptr<DeviceInfo>> GetAllDeviceInfo() const = 0; | 34 virtual std::vector<std::unique_ptr<DeviceInfo>> GetAllDeviceInfo() const = 0; |
35 // Registers an observer to be called on syncing any updated DeviceInfo. | 35 // Registers an observer to be called on syncing any updated DeviceInfo. |
36 virtual void AddObserver(Observer* observer) = 0; | 36 virtual void AddObserver(Observer* observer) = 0; |
37 // Unregisters an observer. | 37 // Unregisters an observer. |
38 virtual void RemoveObserver(Observer* observer) = 0; | 38 virtual void RemoveObserver(Observer* observer) = 0; |
39 // Returns the count of active devices. | 39 // Returns the count of active devices. |
40 virtual int CountActiveDevices() const = 0; | 40 virtual int CountActiveDevices() const = 0; |
41 }; | 41 }; |
42 | 42 |
43 } // namespace sync_driver | 43 } // namespace syncer |
44 | 44 |
45 #endif // COMPONENTS_SYNC_DEVICE_INFO_DEVICE_INFO_TRACKER_H_ | 45 #endif // COMPONENTS_SYNC_DEVICE_INFO_DEVICE_INFO_TRACKER_H_ |
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