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// Copyright 2022 The Chromium Authors
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.
#ifndef COMPONENTS_REDUCE_ACCEPT_LANGUAGE_BROWSER_REDUCE_ACCEPT_LANGUAGE_SERVICE_H_
#define COMPONENTS_REDUCE_ACCEPT_LANGUAGE_BROWSER_REDUCE_ACCEPT_LANGUAGE_SERVICE_H_
#include <vector>
#include "base/memory/raw_ptr.h"
#include "components/keyed_service/core/keyed_service.h"
#include "components/prefs/pref_member.h"
#include "content/public/browser/reduce_accept_language_controller_delegate.h"
class HostContentSettingsMap;
class PrefService;
namespace reduce_accept_language {
// Stores and retrieves the last reduced accept language negotiated for each
// origin, using host content settings.
class ReduceAcceptLanguageService
: public KeyedService,
public content::ReduceAcceptLanguageControllerDelegate {
public:
ReduceAcceptLanguageService(HostContentSettingsMap* settings_map,
PrefService* pref_service,
bool is_incognito);
ReduceAcceptLanguageService(const ReduceAcceptLanguageService&) = delete;
ReduceAcceptLanguageService& operator=(const ReduceAcceptLanguageService&) =
delete;
~ReduceAcceptLanguageService() override;
std::optional<std::string> GetReducedLanguage(
const url::Origin& origin) override;
std::vector<std::string> GetUserAcceptLanguages() const override;
void PersistReducedLanguage(const url::Origin& origin,
const std::string& language) override;
void ClearReducedLanguage(const url::Origin& origin) override;
// KeyedService:
void Shutdown() override;
private:
// Forwards changes to `pref_accept_language_` to `user_accept_languages_`,
// after formatting them as appropriate.
void UpdateAcceptLanguage();
raw_ptr<HostContentSettingsMap> settings_map_ = nullptr;
const bool is_incognito_;
StringPrefMember pref_accept_language_;
// This store user's accept language list listening to changes on language
// prefs to keep up-to-date.
std::vector<std::string> user_accept_languages_;
};
} // namespace reduce_accept_language
#endif // COMPONENTS_REDUCE_ACCEPT_LANGUAGE_BROWSER_REDUCE_ACCEPT_LANGUAGE_SERVICE_H_
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