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1 // Copyright (c) 2011 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 CHROME_BROWSER_EXTENSIONS_SYNCABLE_EXTENSION_SETTINGS_STORAGE_H_ | |
6 #define CHROME_BROWSER_EXTENSIONS_SYNCABLE_EXTENSION_SETTINGS_STORAGE_H_ | |
7 #pragma once | |
8 | |
9 #include "base/compiler_specific.h" | |
10 #include "base/memory/weak_ptr.h" | |
11 #include "base/values.h" | |
12 #include "chrome/browser/extensions/extension_settings_storage.h" | |
13 #include "chrome/browser/extensions/extension_setting_sync_data.h" | |
14 #include "chrome/browser/sync/api/syncable_service.h" | |
15 #include "chrome/browser/sync/api/sync_change.h" | |
16 | |
17 // Decorates an ExtensionSettingsStorage with sync behaviour. | |
18 class SyncableExtensionSettingsStorage : public ExtensionSettingsStorage { | |
19 public: | |
20 explicit SyncableExtensionSettingsStorage( | |
21 std::string extension_id, | |
22 // Ownership taken. | |
23 ExtensionSettingsStorage* delegate); | |
24 | |
25 virtual ~SyncableExtensionSettingsStorage(); | |
26 | |
27 // ExtensionSettingsStorage implementation. | |
28 virtual Result Get(const std::string& key) OVERRIDE; | |
29 virtual Result Get(const std::vector<std::string>& keys) OVERRIDE; | |
30 virtual Result Get() OVERRIDE; | |
31 virtual Result Set(const std::string& key, const Value& value) OVERRIDE; | |
32 virtual Result Set(const DictionaryValue& settings) OVERRIDE; | |
33 virtual Result Remove(const std::string& key) OVERRIDE; | |
34 virtual Result Remove(const std::vector<std::string>& keys) OVERRIDE; | |
35 virtual Result Clear() OVERRIDE; | |
36 | |
37 // Sync-related methods. | |
38 void StartSyncing( | |
39 const DictionaryValue& sync_state, | |
40 // Must be non-NULL. Ownership NOT taken. | |
41 SyncChangeProcessor* sync_processor); | |
42 void StopSyncing(); | |
43 void ProcessSyncChanges(const ExtensionSettingSyncDataList& sync_changes); | |
44 | |
45 private: | |
46 // Either adds to sync or send updates to sync for some settings. | |
47 // Whether they're adds or updates depends on the state of synced_keys_. | |
48 void SendAddsOrUpdatesToSync(const DictionaryValue& settings); | |
49 | |
50 // Sends deletes to sync for some settings. | |
51 void SendDeletesToSync(const std::vector<std::string>& keys); | |
52 | |
53 // Sends all local settings to sync (synced settings assumed to be empty). | |
54 void SendLocalSettingsToSync( | |
55 const DictionaryValue& settings); | |
56 | |
57 // Overwrites local state with sync state. | |
58 void OverwriteLocalSettingsWithSync( | |
59 const DictionaryValue& sync_state, const DictionaryValue& settings); | |
60 | |
61 // Id of the extension these settings are for. | |
62 std::string extension_id_; | |
akalin
2011/09/15 19:56:44
const?
not at google - send to devlin
2011/09/16 05:18:59
Done.
| |
63 | |
64 // Storage area to sync. | |
65 scoped_ptr<ExtensionSettingsStorage> delegate_; | |
66 | |
67 // Sync processor. Non-NULL while sync is enabled (between calls to | |
68 // StartSyncing and StopSyncing). | |
69 SyncChangeProcessor* sync_processor_; | |
70 | |
71 // Keys of the settings that are currently being synced. | |
72 std::set<std::string> synced_keys_; | |
73 | |
74 DISALLOW_COPY_AND_ASSIGN(SyncableExtensionSettingsStorage); | |
75 }; | |
76 | |
77 #endif // CHROME_BROWSER_EXTENSIONS_SYNCABLE_EXTENSION_SETTINGS_STORAGE_H_ | |
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