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_SPLIT_PREFERENCE_H_ 6 #define CHROME_BROWSER_PREFS_TRACKED_TRACKED_SPLIT_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 TrackedSplitPreference must be tracking a dictionary pref. Each top-level 19 // entry in its dictionary is tracked and enforced independently. An optional 20 // delegate is notified of the status of the preference during enforcement. 21 // Note: preferences using this strategy must be kept in sync with 22 // TrackedSplitPreferences in histograms.xml. 23 class TrackedSplitPreference : public TrackedPreference { 24 public: 25 // Constructs a TrackedSplitPreference. |pref_path| must be a dictionary pref. 26 TrackedSplitPreference(const std::string& pref_path, 27 size_t reporting_id, 28 size_t reporting_ids_count, 29 PrefHashFilter::EnforcementLevel enforcement_level, 30 TrackedPreferenceValidationDelegate* delegate); 31 32 // TrackedPreference implementation. 33 virtual void OnNewValue(const base::Value* value, 34 PrefHashStoreTransaction* transaction) const OVERRIDE; 35 virtual bool EnforceAndReport( 36 base::DictionaryValue* pref_store_contents, 37 PrefHashStoreTransaction* transaction) const OVERRIDE; 38 39 private: 40 const std::string pref_path_; 41 const TrackedPreferenceHelper helper_; 42 TrackedPreferenceValidationDelegate* delegate_; 43 44 DISALLOW_COPY_AND_ASSIGN(TrackedSplitPreference); 45 }; 46 47 #endif // CHROME_BROWSER_PREFS_TRACKED_TRACKED_SPLIT_PREFERENCE_H_ 48
