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      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
      3 // found in the LICENSE file.
      4 
      5 #ifndef CHROME_BROWSER_EXTENSIONS_API_STORAGE_SYNC_VALUE_STORE_CACHE_H_
      6 #define CHROME_BROWSER_EXTENSIONS_API_STORAGE_SYNC_VALUE_STORE_CACHE_H_
      7 
      8 #include "base/basictypes.h"
      9 #include "base/compiler_specific.h"
     10 #include "base/memory/ref_counted.h"
     11 #include "base/memory/scoped_ptr.h"
     12 #include "extensions/browser/api/storage/settings_observer.h"
     13 #include "extensions/browser/api/storage/value_store_cache.h"
     14 #include "sync/api/syncable_service.h"
     15 
     16 namespace base {
     17 class FilePath;
     18 }
     19 
     20 namespace syncer {
     21 class SyncableService;
     22 }
     23 
     24 namespace extensions {
     25 
     26 class SettingsStorageFactory;
     27 class SyncStorageBackend;
     28 
     29 // ValueStoreCache for the SYNC namespace. It owns a backend for apps and
     30 // another for extensions. Each backend takes care of persistence and syncing.
     31 class SyncValueStoreCache : public ValueStoreCache {
     32  public:
     33   SyncValueStoreCache(
     34       const scoped_refptr<SettingsStorageFactory>& factory,
     35       const scoped_refptr<SettingsObserverList>& observers,
     36       const base::FilePath& profile_path);
     37   virtual ~SyncValueStoreCache();
     38 
     39   syncer::SyncableService* GetSyncableService(syncer::ModelType type) const;
     40 
     41   // ValueStoreCache implementation:
     42   virtual void RunWithValueStoreForExtension(
     43       const StorageCallback& callback,
     44       scoped_refptr<const Extension> extension) OVERRIDE;
     45   virtual void DeleteStorageSoon(const std::string& extension_id) OVERRIDE;
     46 
     47  private:
     48   void InitOnFileThread(const scoped_refptr<SettingsStorageFactory>& factory,
     49                         const scoped_refptr<SettingsObserverList>& observers,
     50                         const base::FilePath& profile_path);
     51 
     52   bool initialized_;
     53   scoped_ptr<SyncStorageBackend> app_backend_;
     54   scoped_ptr<SyncStorageBackend> extension_backend_;
     55 
     56   DISALLOW_COPY_AND_ASSIGN(SyncValueStoreCache);
     57 };
     58 
     59 }  // namespace extensions
     60 
     61 #endif  // CHROME_BROWSER_EXTENSIONS_API_STORAGE_SYNC_VALUE_STORE_CACHE_H_
     62