File: family_user_chrome_activity_metrics.cc

package info (click to toggle)
chromium 139.0.7258.127-1
  • links: PTS, VCS
  • area: main
  • in suites:
  • size: 6,122,068 kB
  • sloc: cpp: 35,100,771; ansic: 7,163,530; javascript: 4,103,002; python: 1,436,920; asm: 946,517; xml: 746,709; pascal: 187,653; perl: 88,691; sh: 88,436; objc: 79,953; sql: 51,488; cs: 44,583; fortran: 24,137; makefile: 22,147; tcl: 15,277; php: 13,980; yacc: 8,984; ruby: 7,485; awk: 3,720; lisp: 3,096; lex: 1,327; ada: 727; jsp: 228; sed: 36
file content (132 lines) | stat: -rw-r--r-- 4,616 bytes parent folder | download | duplicates (6)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
// Copyright 2020 The Chromium Authors
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.

#include "chrome/browser/ash/child_accounts/family_user_chrome_activity_metrics.h"

#include "base/check.h"
#include "base/containers/contains.h"
#include "base/metrics/histogram_functions.h"
#include "base/unguessable_token.h"
#include "chrome/browser/ash/child_accounts/time_limits/app_time_limit_utils.h"
#include "chrome/browser/ash/child_accounts/time_limits/app_types.h"
#include "chrome/browser/profiles/profile.h"
#include "chrome/common/pref_names.h"
#include "components/prefs/pref_registry_simple.h"
#include "components/prefs/pref_service.h"

namespace ash {

namespace {

constexpr base::TimeDelta kMinChromeDuration = base::Minutes(1);
constexpr base::TimeDelta kMaxChromeDuration = base::Days(7);
constexpr int kChromeDurationBuckets = 100;

}  // namespace

// static
const char FamilyUserChromeActivityMetrics::
    kChromeBrowserEngagementDurationHistogramName[] =
        "FamilyUser.ChromeBrowserEngagement.Duration2";

// static
void FamilyUserChromeActivityMetrics::RegisterProfilePrefs(
    PrefRegistrySimple* registry) {
  registry->RegisterTimeDeltaPref(
      prefs::kFamilyUserMetricsChromeBrowserEngagementDuration,
      base::TimeDelta());
}

FamilyUserChromeActivityMetrics::FamilyUserChromeActivityMetrics(
    Profile* profile)
    : pref_service_(profile->GetPrefs()), app_service_wrapper_(profile) {
  DCHECK(pref_service_);
  app_service_wrapper_.AddObserver(this);
  UsageTimeStateNotifier::GetInstance()->AddObserver(this);
}

FamilyUserChromeActivityMetrics::~FamilyUserChromeActivityMetrics() {
  DCHECK_EQ(base::Time(), active_duration_start_);
  app_service_wrapper_.RemoveObserver(this);
  UsageTimeStateNotifier::GetInstance()->RemoveObserver(this);
}

void FamilyUserChromeActivityMetrics::OnNewDay() {
  base::TimeDelta unreported_duration = pref_service_->GetTimeDelta(
      prefs::kFamilyUserMetricsChromeBrowserEngagementDuration);
  if (unreported_duration <= base::TimeDelta())
    return;
  base::UmaHistogramCustomTimes(kChromeBrowserEngagementDurationHistogramName,
                                unreported_duration, kMinChromeDuration,
                                kMaxChromeDuration, kChromeDurationBuckets);
  pref_service_->ClearPref(
      prefs::kFamilyUserMetricsChromeBrowserEngagementDuration);
}

void FamilyUserChromeActivityMetrics::SetActiveSessionStartForTesting(
    base::Time time) {
  active_duration_start_ = time;
}

void FamilyUserChromeActivityMetrics::OnAppActive(
    const app_time::AppId& app_id,
    const base::UnguessableToken& instance_id,
    base::Time timestamp) {
  if (app_id != app_time::GetChromeAppId())
    return;

  if (active_browser_instances_.empty())
    UpdateUserEngagement(/*is_user_active=*/true);

  active_browser_instances_.insert(instance_id);
}

void FamilyUserChromeActivityMetrics::OnAppInactive(
    const app_time::AppId& app_id,
    const base::UnguessableToken& instance_id,
    base::Time timestamp) {
  if (app_id != app_time::GetChromeAppId())
    return;

  // OnAppInactive might get called for the same instance multiple times. The
  // |instance| might have already been removed from
  // |active_browser_instances_|.
  if (!base::Contains(active_browser_instances_, instance_id))
    return;

  active_browser_instances_.erase(instance_id);
  if (active_browser_instances_.empty())
    UpdateUserEngagement(/*is_user_active=*/false);
}

void FamilyUserChromeActivityMetrics::OnUsageTimeStateChange(
    UsageTimeStateNotifier::UsageTimeState state) {
  if (active_browser_instances_.empty())
    return;

  // We should exclude the duration when UsageTimeState is not active and
  // `active_browser_instances_` has instance. For example, when screen is off,
  // the browser might still be active.
  UpdateUserEngagement(state == UsageTimeStateNotifier::UsageTimeState::ACTIVE);
}

void FamilyUserChromeActivityMetrics::UpdateUserEngagement(
    bool is_user_active) {
  base::Time now = base::Time::Now();
  if (is_user_active) {
    active_duration_start_ = now;
  } else {
    if (base::Time() < active_duration_start_ && active_duration_start_ < now) {
      base::TimeDelta unreported_duration = pref_service_->GetTimeDelta(
          prefs::kFamilyUserMetricsChromeBrowserEngagementDuration);
      pref_service_->SetTimeDelta(
          prefs::kFamilyUserMetricsChromeBrowserEngagementDuration,
          unreported_duration + now - active_duration_start_);
    }

    active_duration_start_ = base::Time();
  }
}

}  // namespace ash