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// 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_TRACKED_TRACKED_SPLIT_PREFERENCE_H_
#define CHROME_BROWSER_PREFS_TRACKED_TRACKED_SPLIT_PREFERENCE_H_
#include <string>
#include "base/compiler_specific.h"
#include "base/macros.h"
#include "chrome/browser/prefs/pref_hash_filter.h"
#include "chrome/browser/prefs/tracked/tracked_preference.h"
#include "chrome/browser/prefs/tracked/tracked_preference_helper.h"
class TrackedPreferenceValidationDelegate;
// A TrackedSplitPreference must be tracking a dictionary pref. Each top-level
// entry in its dictionary is tracked and enforced independently. An optional
// delegate is notified of the status of the preference during enforcement.
// Note: preferences using this strategy must be kept in sync with
// TrackedSplitPreferences in histograms.xml.
class TrackedSplitPreference : public TrackedPreference {
public:
// Constructs a TrackedSplitPreference. |pref_path| must be a dictionary pref.
TrackedSplitPreference(const std::string& pref_path,
size_t reporting_id,
size_t reporting_ids_count,
PrefHashFilter::EnforcementLevel enforcement_level,
TrackedPreferenceValidationDelegate* delegate);
// TrackedPreference implementation.
virtual void OnNewValue(const base::Value* value,
PrefHashStoreTransaction* transaction) const OVERRIDE;
virtual bool EnforceAndReport(
base::DictionaryValue* pref_store_contents,
PrefHashStoreTransaction* transaction) const OVERRIDE;
private:
const std::string pref_path_;
const TrackedPreferenceHelper helper_;
TrackedPreferenceValidationDelegate* delegate_;
DISALLOW_COPY_AND_ASSIGN(TrackedSplitPreference);
};
#endif // CHROME_BROWSER_PREFS_TRACKED_TRACKED_SPLIT_PREFERENCE_H_