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- // Copyright 2018 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 COMPONENTS_UNIFIED_CONSENT_URL_KEYED_DATA_COLLECTION_CONSENT_HELPER_H_
- #define COMPONENTS_UNIFIED_CONSENT_URL_KEYED_DATA_COLLECTION_CONSENT_HELPER_H_
- #include <memory>
- #include "base/observer_list.h"
- class PrefService;
- namespace syncer {
- class SyncService;
- }
- namespace unified_consent {
- // Helper class that allows clients to check whether the user has consented
- // for URL-keyed data collection.
- class UrlKeyedDataCollectionConsentHelper {
- public:
- class Observer {
- public:
- // Called when the state of the URL-keyed data collection changes.
- virtual void OnUrlKeyedDataCollectionConsentStateChanged(
- UrlKeyedDataCollectionConsentHelper* consent_helper) = 0;
- };
- // Creates a new |UrlKeyedDataCollectionConsentHelper| instance that checks
- // whether *anonymized* data collection is enabled. This should be used when
- // the client needs to check whether the user has granted consent for
- // *anonymized* URL-keyed data collection. It is enabled if the preference
- // |prefs::kUrlKeyedAnonymizedDataCollectionEnabled| from |pref_service| is
- // set to true.
- //
- // Note: |pref_service| must outlive the returned instance.
- static std::unique_ptr<UrlKeyedDataCollectionConsentHelper>
- NewAnonymizedDataCollectionConsentHelper(PrefService* pref_service);
- // Creates a new |UrlKeyedDataCollectionConsentHelper| instance that checks
- // whether *personalized* data collection is enabled. This should be used when
- // the client needs to check whether the user has granted consent for
- // URL-keyed data collection keyed by their Google account.
- //
- // Implementation-wise URL-keyed data collection is enabled if history sync
- // has an active upload state.
- static std::unique_ptr<UrlKeyedDataCollectionConsentHelper>
- NewPersonalizedDataCollectionConsentHelper(syncer::SyncService* sync_service);
- UrlKeyedDataCollectionConsentHelper(
- const UrlKeyedDataCollectionConsentHelper&) = delete;
- UrlKeyedDataCollectionConsentHelper& operator=(
- const UrlKeyedDataCollectionConsentHelper&) = delete;
- virtual ~UrlKeyedDataCollectionConsentHelper();
- // Returns true if the user has consented for URL keyed anonymized data
- // collection.
- virtual bool IsEnabled() = 0;
- // Methods to register or remove observers.
- void AddObserver(Observer* observer);
- void RemoveObserver(Observer* observer);
- protected:
- UrlKeyedDataCollectionConsentHelper();
- // Fires |OnUrlKeyedDataCollectionConsentStateChanged| on all the observers.
- void FireOnStateChanged();
- private:
- base::ObserverList<Observer, true>::Unchecked observer_list_;
- };
- } // namespace unified_consent
- #endif // COMPONENTS_UNIFIED_CONSENT_URL_KEYED_DATA_COLLECTION_CONSENT_HELPER_H_
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