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1 // Copyright 2014 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 #include "chrome/browser/ui/webui/chromeos/login/demo_mode_detector.h"
6 
7 #include "base/command_line.h"
8 #include "base/prefs/pref_service.h"
9 #include "base/strings/string_number_conversions.h"
10 #include "chrome/browser/browser_process.h"
11 #include "chrome/browser/chromeos/login/ui/login_display_host.h"
12 #include "chrome/browser/chromeos/login/ui/login_display_host_impl.h"
13 #include "chrome/common/pref_names.h"
14 #include "chromeos/chromeos_switches.h"
15 
16 namespace {
17   const int kDerelectDetectionTimeoutSeconds = 8 * 60 * 60;  // 8 hours.
18   const int kDerelectIdleTimeoutSeconds = 5 * 60;            // 5 minutes.
19   const int kOobeTimerUpdateIntervalSeconds = 5 * 60;        // 5 minutes.
20 }  // namespace
21 
22 namespace chromeos {
23 
DemoModeDetector()24 DemoModeDetector::DemoModeDetector()
25     : demo_launched_(false),
26       weak_ptr_factory_(this) {
27   SetupTimeouts();
28 }
29 
~DemoModeDetector()30 DemoModeDetector::~DemoModeDetector() {
31 }
32 
InitDetection()33 void DemoModeDetector::InitDetection() {
34   if (IsDerelict())
35     StartIdleDetection();
36   else
37     StartOobeTimer();
38 }
39 
StopDetection()40 void DemoModeDetector::StopDetection() {
41   idle_detector_.reset();
42 }
43 
StartIdleDetection()44 void DemoModeDetector::StartIdleDetection() {
45   if (!idle_detector_.get()) {
46     idle_detector_.reset(
47         new IdleDetector(base::Closure(),
48                          base::Bind(&DemoModeDetector::OnIdle,
49                                     weak_ptr_factory_.GetWeakPtr())));
50   }
51   idle_detector_->Start(derelict_idle_timeout_);
52 }
53 
StartOobeTimer()54 void DemoModeDetector::StartOobeTimer() {
55   if (oobe_timer_.IsRunning())
56     return;
57   oobe_timer_.Start(FROM_HERE,
58                     oobe_timer_update_interval_,
59                     this,
60                     &DemoModeDetector::OnOobeTimerUpdate);
61 }
62 
OnIdle()63 void DemoModeDetector::OnIdle() {
64   if (demo_launched_)
65     return;
66   demo_launched_ = true;
67   LoginDisplayHost* host = LoginDisplayHostImpl::default_host();
68   host->StartDemoAppLaunch();
69 }
70 
OnOobeTimerUpdate()71 void DemoModeDetector::OnOobeTimerUpdate() {
72   time_on_oobe_ += oobe_timer_update_interval_;
73 
74   PrefService* prefs = g_browser_process->local_state();
75   prefs->SetInt64(prefs::kTimeOnOobe, time_on_oobe_.InSeconds());
76 
77   if (IsDerelict()) {
78     oobe_timer_.Stop();
79     StartIdleDetection();
80   }
81 }
82 
SetupTimeouts()83 void DemoModeDetector::SetupTimeouts() {
84   CommandLine* cmdline = CommandLine::ForCurrentProcess();
85   DCHECK(cmdline);
86 
87   PrefService* prefs = g_browser_process->local_state();
88   time_on_oobe_ =
89       base::TimeDelta::FromSeconds(prefs->GetInt64(prefs::kTimeOnOobe));
90 
91   int derelict_detection_timeout;
92   if (!cmdline->HasSwitch(switches::kDerelictDetectionTimeout) ||
93       !base::StringToInt(
94           cmdline->GetSwitchValueASCII(switches::kDerelictDetectionTimeout),
95           &derelict_detection_timeout)) {
96     derelict_detection_timeout = kDerelectDetectionTimeoutSeconds;
97   }
98   derelict_detection_timeout_ =
99       base::TimeDelta::FromSeconds(derelict_detection_timeout);
100 
101   int derelict_idle_timeout;
102   if (!cmdline->HasSwitch(switches::kDerelictIdleTimeout) ||
103       !base::StringToInt(
104           cmdline->GetSwitchValueASCII(switches::kDerelictIdleTimeout),
105           &derelict_idle_timeout)) {
106     derelict_idle_timeout = kDerelectIdleTimeoutSeconds;
107   }
108   derelict_idle_timeout_ = base::TimeDelta::FromSeconds(derelict_idle_timeout);
109 
110 
111   int oobe_timer_update_interval;
112   if (!cmdline->HasSwitch(switches::kOobeTimerInterval) ||
113       !base::StringToInt(
114           cmdline->GetSwitchValueASCII(switches::kOobeTimerInterval),
115           &oobe_timer_update_interval)) {
116     oobe_timer_update_interval = kOobeTimerUpdateIntervalSeconds;
117   }
118   oobe_timer_update_interval_ =
119       base::TimeDelta::FromSeconds(oobe_timer_update_interval);
120 
121   // In case we'd be derelict before our timer is set to trigger, reduce
122   // the interval so we check again when we're scheduled to go derelict.
123   oobe_timer_update_interval_ =
124       std::max(std::min(oobe_timer_update_interval_,
125                         derelict_detection_timeout_ - time_on_oobe_),
126                base::TimeDelta::FromSeconds(0));
127 }
128 
IsDerelict()129 bool DemoModeDetector::IsDerelict() {
130   return time_on_oobe_ >= derelict_detection_timeout_;
131 }
132 
133 }  // namespace chromeos
134