// Copyright 2014 The Chromium Authors. All rights reserved. // Use of this source code is governed by a BSD-style license that can be // found in the LICENSE file. #ifndef CHROME_BROWSER_PREFS_PROFILE_PREF_STORE_MANAGER_H_ #define CHROME_BROWSER_PREFS_PROFILE_PREF_STORE_MANAGER_H_ #include <string> #include <vector> #include "base/files/file_path.h" #include "base/macros.h" #include "base/memory/ref_counted.h" #include "base/memory/scoped_ptr.h" #include "chrome/browser/prefs/pref_hash_filter.h" class PersistentPrefStore; class PrefHashStoreImpl; class PrefService; namespace base { class DictionaryValue; class SequencedTaskRunner; } // namespace base namespace user_prefs { class PrefRegistrySyncable; } // namespace user_prefs class PrefRegistrySimple; // Provides a facade through which the user preference store may be accessed and // managed. class ProfilePrefStoreManager { public: // Instantiates a ProfilePrefStoreManager with the configuration required to // manage the user preferences of the profile at |profile_path|. // |tracking_configuration| is used for preference tracking. // |reporting_ids_count| is the count of all possible tracked preference IDs // (possibly greater than |tracking_configuration.size()|). // |seed| and |device_id| are used to track preference value changes and must // be the same on each launch in order to verify loaded preference values. ProfilePrefStoreManager( const base::FilePath& profile_path, const std::vector<PrefHashFilter::TrackedPreferenceMetadata>& tracking_configuration, size_t reporting_ids_count, const std::string& seed, const std::string& device_id, PrefService* local_state); ~ProfilePrefStoreManager(); static const bool kPlatformSupportsPreferenceTracking; // Register local state prefs used by the profile preferences system. static void RegisterPrefs(PrefRegistrySimple* registry); // Register user prefs used by the profile preferences system. static void RegisterProfilePrefs(user_prefs::PrefRegistrySyncable* registry); // Determines the user preferences filename for the profile at |profile_path|. static base::FilePath GetPrefFilePathFromProfilePath( const base::FilePath& profile_path); // Deletes stored hashes for all profiles from |local_state|. static void ResetAllPrefHashStores(PrefService* local_state); // Retrieves the time of the last preference reset event, if any, for // |pref_service|. Assumes that |pref_service| is backed by a PrefStore that // was built by ProfilePrefStoreManager. // If no reset has occurred, returns a null |Time|. static base::Time GetResetTime(PrefService* pref_service); // Clears the time of the last preference reset event, if any, for // |pref_service|. Assumes that |pref_service| is backed by a PrefStore that // was built by ProfilePrefStoreManager. static void ClearResetTime(PrefService* pref_service); // Deletes stored hashes for the managed profile. void ResetPrefHashStore(); // Creates a PersistentPrefStore providing access to the user preferences of // the managed profile. PersistentPrefStore* CreateProfilePrefStore( const scoped_refptr<base::SequencedTaskRunner>& io_task_runner); // Checks the presence/version of the hash store for the managed profile and // creates or updates it if necessary. Completes asynchronously and is safe if // the preferences/hash store are concurrently loaded/manipulated by another // task. void UpdateProfileHashStoreIfRequired( const scoped_refptr<base::SequencedTaskRunner>& io_task_runner); // Initializes the preferences for the managed profile with the preference // values in |master_prefs|. Acts synchronously, including blocking IO. // Returns true on success. bool InitializePrefsFromMasterPrefs( const base::DictionaryValue& master_prefs); // Creates a single-file PrefStore as was used in M34 and earlier. Used only // for testing migration. PersistentPrefStore* CreateDeprecatedCombinedProfilePrefStore( const scoped_refptr<base::SequencedTaskRunner>& io_task_runner); private: class InitializeHashStoreObserver; // Returns a PrefHashStoreImpl for the managed profile. Should only be called // if |kPlatformSupportsPreferenceTracking|. scoped_ptr<PrefHashStoreImpl> GetPrefHashStoreImpl(); // Returns a PrefHashStore that is a copy of the current state of the real // hash store. scoped_ptr<PrefHashStore> CopyPrefHashStore(); const base::FilePath profile_path_; const std::vector<PrefHashFilter::TrackedPreferenceMetadata> tracking_configuration_; const size_t reporting_ids_count_; const std::string seed_; const std::string device_id_; PrefService* local_state_; DISALLOW_COPY_AND_ASSIGN(ProfilePrefStoreManager); }; #endif // CHROME_BROWSER_PREFS_PROFILE_PREF_STORE_MANAGER_H_