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_PREFS_TRACKED_TRACKED_ATOMIC_PREFERENCE_H_ 6 #define CHROME_BROWSER_PREFS_TRACKED_TRACKED_ATOMIC_PREFERENCE_H_ 7 8 #include <string> 9 10 #include "base/compiler_specific.h" 11 #include "base/macros.h" 12 #include "chrome/browser/prefs/pref_hash_filter.h" 13 #include "chrome/browser/prefs/tracked/tracked_preference.h" 14 #include "chrome/browser/prefs/tracked/tracked_preference_helper.h" 15 16 class TrackedPreferenceValidationDelegate; 17 18 // A TrackedAtomicPreference is tracked as a whole. A hash is stored for its 19 // entire value and it is entirely reset on mismatch. An optional delegate is 20 // notified of the status of the preference during enforcement. 21 class TrackedAtomicPreference : public TrackedPreference { 22 public: 23 TrackedAtomicPreference(const std::string& pref_path, 24 size_t reporting_id, 25 size_t reporting_ids_count, 26 PrefHashFilter::EnforcementLevel enforcement_level, 27 TrackedPreferenceValidationDelegate* delegate); 28 29 // TrackedPreference implementation. 30 virtual void OnNewValue(const base::Value* value, 31 PrefHashStoreTransaction* transaction) const OVERRIDE; 32 virtual bool EnforceAndReport( 33 base::DictionaryValue* pref_store_contents, 34 PrefHashStoreTransaction* transaction) const OVERRIDE; 35 36 private: 37 const std::string pref_path_; 38 const TrackedPreferenceHelper helper_; 39 TrackedPreferenceValidationDelegate* delegate_; 40 41 DISALLOW_COPY_AND_ASSIGN(TrackedAtomicPreference); 42 }; 43 44 #endif // CHROME_BROWSER_PREFS_TRACKED_TRACKED_ATOMIC_PREFERENCE_H_ 45