| // Copyright 2013 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_PREF_METRICS_SERVICE_H_ |
| #define CHROME_BROWSER_PREFS_PREF_METRICS_SERVICE_H_ |
| |
| #include "base/macros.h" |
| #include "base/memory/singleton.h" |
| #include "base/memory/weak_ptr.h" |
| #include "components/keyed_service/content/browser_context_keyed_service_factory.h" |
| #include "components/keyed_service/core/keyed_service.h" |
| #include "url/gurl.h" |
| |
| class PrefService; |
| class Profile; |
| |
| // PrefMetricsService is responsible for recording prefs-related UMA stats. |
| class PrefMetricsService : public KeyedService { |
| public: |
| explicit PrefMetricsService(Profile* profile); |
| ~PrefMetricsService() override; |
| |
| // Records metrics about the state of the homepage on launch. |
| static void RecordHomePageLaunchMetrics(bool show_home_button, |
| bool homepage_is_ntp, |
| const GURL& homepage_url); |
| |
| class Factory : public BrowserContextKeyedServiceFactory { |
| public: |
| static Factory* GetInstance(); |
| static PrefMetricsService* GetForProfile(Profile* profile); |
| private: |
| friend struct base::DefaultSingletonTraits<Factory>; |
| |
| Factory(); |
| ~Factory() override; |
| |
| // BrowserContextKeyedServiceFactory implementation |
| KeyedService* BuildServiceInstanceFor( |
| content::BrowserContext* profile) const override; |
| bool ServiceIsCreatedWithBrowserContext() const override; |
| bool ServiceIsNULLWhileTesting() const override; |
| content::BrowserContext* GetBrowserContextToUse( |
| content::BrowserContext* context) const override; |
| }; |
| |
| private: |
| // Record prefs state on browser context creation. |
| void RecordLaunchPrefs(); |
| |
| Profile* profile_; |
| PrefService* prefs_; |
| |
| base::WeakPtrFactory<PrefMetricsService> weak_factory_{this}; |
| |
| DISALLOW_COPY_AND_ASSIGN(PrefMetricsService); |
| }; |
| |
| #endif // CHROME_BROWSER_PREFS_PREF_METRICS_SERVICE_H_ |