chrome/browser/metrics/metrics_reporting_state.h

// Copyright (c) 2011 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_METRICS_METRICS_REPORTING_STATE_H_
#define CHROME_BROWSER_METRICS_METRICS_REPORTING_STATE_H_

#include "base/callback.h"
#include "components/metrics/metrics_service_client.h"

typedef base::Callback<void(bool)> OnMetricsReportingCallbackType;

class PrefService;
class PrefRegistrySimple;

// Initiates a change to metrics reporting state to the new value of |enabled|.
// Starts or stops the metrics service based on the new state and then runs
// |callback_fn| (which can be null) with the updated state (as the operation
// may fail). On platforms other than CrOS and Android, also updates the
// underlying pref.
// TODO(gayane): Support setting the pref on all platforms.
void InitiateMetricsReportingChange(
    bool enabled,
    const OnMetricsReportingCallbackType& callback_fn);

// Returns whether MetricsReporting can be modified by the user (except
// Android).
bool IsMetricsReportingPolicyManaged();

// Register prefs relating to metrics reporting state. Currently only registers
// a pref for metrics reporting default opt-in state.
void RegisterMetricsReportingStatePrefs(PrefRegistrySimple* registry);

// Sets whether metrics reporting was opt-in or not. If it was opt-in, then the
// enable checkbox on first-run was default unchecked. If it was opt-out, then
// the checkbox was default checked. This should only be set once, and only
// during first-run.
void SetMetricsReportingDefaultOptIn(PrefService* local_state, bool opt_in);

// Gets information about the default value for the enable metrics reporting
// checkbox shown during first-run.
metrics::MetricsServiceClient::EnableMetricsDefault
GetMetricsReportingDefaultOptIn(PrefService* local_state);

// Initialize kMetricsReportingEnabled based on kStatsReportingPref device
// setting and add an observer as it is the source of truth on Chrome OS.
void SetupMetricsStateForChromeOS();

#endif  // CHROME_BROWSER_METRICS_METRICS_REPORTING_STATE_H_