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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 COMPONENTS_USER_PREFS_TRACKED_TRACKED_PREFERENCE_HELPER_H_ | |
| 6 #define COMPONENTS_USER_PREFS_TRACKED_TRACKED_PREFERENCE_HELPER_H_ | |
| 7 | |
| 8 #include <stddef.h> | |
| 9 | |
| 10 #include <string> | |
| 11 | |
| 12 #include "base/macros.h" | |
| 13 #include "components/user_prefs/tracked/pref_hash_filter.h" | |
| 14 #include "components/user_prefs/tracked/pref_hash_store_transaction.h" | |
| 15 | |
| 16 // A TrackedPreferenceHelper is a helper class for TrackedPreference which | |
| 17 // handles decision making and reporting for TrackedPreference's | |
| 18 // implementations. | |
| 19 class TrackedPreferenceHelper { | |
| 20 public: | |
| 21 enum ResetAction { | |
| 22 DONT_RESET, | |
| 23 // WANTED_RESET is reported when DO_RESET would have been reported but the | |
| 24 // current |enforcement_level| doesn't allow a reset for the detected state. | |
| 25 WANTED_RESET, | |
| 26 DO_RESET, | |
| 27 }; | |
| 28 | |
| 29 TrackedPreferenceHelper(const std::string& pref_path, | |
| 30 size_t reporting_id, | |
| 31 size_t reporting_ids_count, | |
| 32 PrefHashFilter::EnforcementLevel enforcement_level, | |
| 33 PrefHashFilter::ValueType value_type); | |
| 34 | |
| 35 // Returns a ResetAction stating whether a reset is desired (DO_RESET) or not | |
| 36 // (DONT_RESET) based on observing |value_state|. Can also return WANTED_RESET | |
| 37 // if a reset would have been desired but the current |enforcement_level| | |
| 38 // doesn't allow it. | |
| 39 ResetAction GetAction(PrefHashStoreTransaction::ValueState value_state) const; | |
| 40 | |
| 41 // Returns true if the preference value may contain personal information. | |
| 42 bool IsPersonal() const; | |
| 43 | |
| 44 // Reports |value_state| via UMA under |reporting_id_|. | |
| 45 // |validation_type_suffix| is appended to the reported histogram's name. | |
| 46 void ReportValidationResult(PrefHashStoreTransaction::ValueState value_state, | |
| 47 base::StringPiece validation_type_suffix) const; | |
| 48 | |
| 49 // Reports |reset_action| via UMA under |reporting_id_|. | |
| 50 void ReportAction(ResetAction reset_action) const; | |
| 51 | |
| 52 // Reports, via UMA, the |count| of split preference entries that were | |
| 53 // considered invalid in a CHANGED event. | |
| 54 void ReportSplitPreferenceChangedCount(size_t count) const; | |
| 55 | |
| 56 private: | |
| 57 const std::string pref_path_; | |
| 58 | |
| 59 const size_t reporting_id_; | |
| 60 const size_t reporting_ids_count_; | |
| 61 | |
| 62 // Deny setting changes and hash seeding/migration. | |
| 63 const bool enforce_; | |
| 64 | |
| 65 const bool personal_; | |
| 66 | |
| 67 DISALLOW_COPY_AND_ASSIGN(TrackedPreferenceHelper); | |
| 68 }; | |
| 69 | |
| 70 #endif // COMPONENTS_USER_PREFS_TRACKED_TRACKED_PREFERENCE_HELPER_H_ | |
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Chromium Code Reviews
Issue 2782803002:
Move tracked prefs into services/preferences/tracked. (Closed)
