1 // Copyright 2017 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_SEARCH_ONE_GOOGLE_BAR_ONE_GOOGLE_BAR_SERVICE_H_ 6 #define CHROME_BROWSER_SEARCH_ONE_GOOGLE_BAR_ONE_GOOGLE_BAR_SERVICE_H_ 7 8 #include <memory> 9 10 #include "base/observer_list.h" 11 #include "base/optional.h" 12 #include "chrome/browser/search/one_google_bar/one_google_bar_data.h" 13 #include "chrome/browser/search/one_google_bar/one_google_bar_loader.h" 14 #include "chrome/browser/search/one_google_bar/one_google_bar_service_observer.h" 15 #include "components/keyed_service/core/keyed_service.h" 16 17 namespace signin { 18 class IdentityManager; 19 } // namespace signin 20 21 // A service that downloads, caches, and hands out OneGoogleBarData. It never 22 // initiates a download automatically, only when Refresh is called. When the 23 // user signs in or out, the cached value is cleared. 24 class OneGoogleBarService : public KeyedService { 25 public: 26 OneGoogleBarService(signin::IdentityManager* identity_manager, 27 std::unique_ptr<OneGoogleBarLoader> loader); 28 ~OneGoogleBarService() override; 29 30 // KeyedService implementation. 31 void Shutdown() override; 32 33 // Returns the currently cached OneGoogleBarData, if any. one_google_bar_data()34 const base::Optional<OneGoogleBarData>& one_google_bar_data() const { 35 return one_google_bar_data_; 36 } 37 38 // Requests an asynchronous refresh from the network. After the update 39 // completes, OnOneGoogleBarDataUpdated will be called on the observers. 40 void Refresh(); 41 42 // Add/remove observers. All observers must unregister themselves before the 43 // OneGoogleBarService is destroyed. 44 void AddObserver(OneGoogleBarServiceObserver* observer); 45 void RemoveObserver(OneGoogleBarServiceObserver* observer); 46 loader_for_testing()47 OneGoogleBarLoader* loader_for_testing() { return loader_.get(); } 48 language_code()49 std::string language_code() { return language_code_; } 50 51 // Used for testing. 52 void SetLanguageCodeForTesting(const std::string& language_code); 53 54 // Sets ogdeb query parameter in loader. 55 bool SetAdditionalQueryParams(const std::string& value); 56 57 private: 58 class SigninObserver; 59 60 void SigninStatusChanged(); 61 62 void OneGoogleBarDataLoaded(OneGoogleBarLoader::Status status, 63 const base::Optional<OneGoogleBarData>& data); 64 65 void NotifyObservers(); 66 67 std::unique_ptr<OneGoogleBarLoader> loader_; 68 69 std::unique_ptr<SigninObserver> signin_observer_; 70 71 base::ObserverList<OneGoogleBarServiceObserver, true>::Unchecked observers_; 72 73 base::Optional<OneGoogleBarData> one_google_bar_data_; 74 75 std::string language_code_; 76 }; 77 78 #endif // CHROME_BROWSER_SEARCH_ONE_GOOGLE_BAR_ONE_GOOGLE_BAR_SERVICE_H_ 79