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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 | |
19 : public ExtensionSettingsStorage, | |
20 public base::SupportsWeakPtr<SyncableExtensionSettingsStorage> { | |
21 public: | |
22 // Bundles the sync dependencies for sync-related callbacks. Since sync may | |
23 // be disabled at any time, and therefore the sync processor and synced keys | |
24 // made invalid, callbacks must only be passed weak references to them. | |
25 // Public for anonymous namespace access. | |
26 class SyncDeps : public base::SupportsWeakPtr<SyncDeps> { | |
27 public: | |
28 // Ownership of processor NOT taken. | |
29 explicit SyncDeps(SyncChangeProcessor* processor); | |
30 virtual ~SyncDeps(); | |
31 | |
32 SyncChangeProcessor* processor() { return processor_; } | |
33 std::set<std::string>* keys() { return &keys_; } | |
34 | |
35 private: | |
36 // Sync's SyncChange handler. All changes are pushed through this. | |
37 SyncChangeProcessor* processor_; | |
38 | |
39 // Keys of settings that have been synced. Track in order to correctly | |
40 // send an ACTION_ADD or ACTION_UPDATE to the processor on Set(). | |
41 std::set<std::string> keys_; | |
42 }; | |
43 | |
44 explicit SyncableExtensionSettingsStorage( | |
45 std::string extension_id, | |
46 // Ownership taken. | |
47 ExtensionSettingsStorage* delegate); | |
48 | |
49 // ExtensionSettingsStorage implementation. | |
50 virtual void Get(const std::string& key, Callback* callback) OVERRIDE; | |
Ben Olmstead
2011/08/31 17:36:43
No need for virtual and OVERRIDE together, just OV
akalin
2011/08/31 21:12:51
Don't we always want 'virtual' for clarity? Since
Ben Olmstead
2011/08/31 21:19:43
For some reason, I thought we didn't use the two t
not at google - send to devlin
2011/09/02 05:00:40
OVERRIDE and virtual are separate things, yes.
| |
51 virtual void Get(const ListValue& keys, Callback* callback) OVERRIDE; | |
52 virtual void Get(Callback* callback) OVERRIDE; | |
53 virtual void Set( | |
54 const std::string& key, const Value& value, Callback* callback) OVERRIDE; | |
55 virtual void Set(const DictionaryValue& values, Callback* callback) OVERRIDE; | |
56 virtual void Remove(const std::string& key, Callback* callback) OVERRIDE; | |
57 virtual void Remove(const ListValue& keys, Callback* callback) OVERRIDE; | |
58 virtual void Clear(Callback *callback) OVERRIDE; | |
59 virtual void DeleteSoon() OVERRIDE; | |
60 | |
61 // Sync-related methods. | |
62 void StartSyncing( | |
63 const DictionaryValue& sync_state, | |
64 // Guaranteed non-NULL. Ownership NOT taken. | |
65 SyncChangeProcessor* sync_processor); | |
66 void StopSyncing(); | |
67 void ProcessSyncChanges(const ExtensionSettingSyncDataList& sync_changes); | |
68 | |
69 private: | |
70 // Deleted from DeleteSoon(). | |
71 virtual ~SyncableExtensionSettingsStorage(); | |
72 | |
73 // Id of the extension these settings are for. | |
74 std::string extension_id_; | |
75 | |
76 // Decorated storage. Deleted in DeleteSoon(). | |
77 ExtensionSettingsStorage* delegate_; | |
78 | |
79 // Weak sync dependencies. Non-NULL while sync enabled (between calls to | |
80 // MergeDataAndStartSyncing and StopSyncing), NULL at other times. | |
81 SyncDeps* sync_deps_; | |
82 | |
83 DISALLOW_COPY_AND_ASSIGN(SyncableExtensionSettingsStorage); | |
84 }; | |
85 | |
86 #endif // CHROME_BROWSER_EXTENSIONS_SYNCABLE_EXTENSION_SETTINGS_STORAGE_H_ | |
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