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// 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_
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