Upstream version 10.38.208.0
[platform/framework/web/crosswalk.git] / src / chrome / browser / prefs / incognito_mode_prefs.cc
1 // Copyright (c) 2012 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/prefs/incognito_mode_prefs.h"
6
7 #include "base/command_line.h"
8 #include "base/logging.h"
9 #include "base/prefs/pref_service.h"
10 #include "chrome/browser/profiles/profile.h"
11 #include "chrome/common/chrome_switches.h"
12 #include "chrome/common/pref_names.h"
13 #include "components/pref_registry/pref_registry_syncable.h"
14
15 #if defined(OS_WIN)
16 #include "base/win/metro.h"
17 #endif  // OS_WIN
18
19 #if defined(OS_ANDROID)
20 #include "chrome/browser/android/chromium_application.h"
21 #endif  // OS_ANDROID
22
23 #if defined(OS_WIN)
24 namespace {
25
26 bool g_parental_control_on = false;
27
28 } // empty namespace
29 #endif  // OS_WIN
30
31 // static
32 bool IncognitoModePrefs::IntToAvailability(int in_value,
33                                            Availability* out_value) {
34   if (in_value < 0 || in_value >= AVAILABILITY_NUM_TYPES) {
35     *out_value = ENABLED;
36     return false;
37   }
38   *out_value = static_cast<Availability>(in_value);
39   return true;
40 }
41
42 // static
43 IncognitoModePrefs::Availability IncognitoModePrefs::GetAvailability(
44     const PrefService* pref_service) {
45   DCHECK(pref_service);
46   int pref_value = pref_service->GetInteger(prefs::kIncognitoModeAvailability);
47   Availability result = IncognitoModePrefs::ENABLED;
48   bool valid = IntToAvailability(pref_value, &result);
49   DCHECK(valid);
50   if (ArePlatformParentalControlsEnabled()) {
51     if (result == IncognitoModePrefs::FORCED)
52       LOG(ERROR) << "Ignoring FORCED incognito. Parental control logging on";
53     return IncognitoModePrefs::DISABLED;
54   }
55   return result;
56 }
57
58 // static
59 void IncognitoModePrefs::SetAvailability(PrefService* prefs,
60                                          const Availability availability) {
61   prefs->SetInteger(prefs::kIncognitoModeAvailability, availability);
62 }
63
64 // static
65 void IncognitoModePrefs::RegisterProfilePrefs(
66     user_prefs::PrefRegistrySyncable* registry) {
67   registry->RegisterIntegerPref(
68       prefs::kIncognitoModeAvailability,
69       IncognitoModePrefs::ENABLED,
70       user_prefs::PrefRegistrySyncable::UNSYNCABLE_PREF);
71 }
72
73 // static
74 bool IncognitoModePrefs::ShouldLaunchIncognito(
75     const CommandLine& command_line,
76     const PrefService* prefs) {
77   Availability incognito_avail = GetAvailability(prefs);
78   return incognito_avail != IncognitoModePrefs::DISABLED &&
79          (command_line.HasSwitch(switches::kIncognito) ||
80           incognito_avail == IncognitoModePrefs::FORCED);
81 }
82
83 // static
84 bool IncognitoModePrefs::CanOpenBrowser(Profile* profile) {
85   if (profile->IsGuestSession())
86     return true;
87
88   switch (GetAvailability(profile->GetPrefs())) {
89     case IncognitoModePrefs::ENABLED:
90       return true;
91
92     case IncognitoModePrefs::DISABLED:
93       return !profile->IsOffTheRecord();
94
95     case IncognitoModePrefs::FORCED:
96       return profile->IsOffTheRecord();
97
98     default:
99       NOTREACHED();
100       return false;
101   }
102 }
103
104 // static
105 bool IncognitoModePrefs::ArePlatformParentalControlsEnabled() {
106 #if defined(OS_WIN)
107   // Disable incognito mode windows if parental controls are on. This is only
108   // for Windows Vista and above.
109   return base::win::IsParentalControlActivityLoggingOn();
110 #elif defined(OS_ANDROID)
111   return chrome::android::ChromiumApplication::AreParentalControlsEnabled();
112 #else
113   return false;
114 #endif
115 }
116
117 #if defined(OS_WIN)
118 void IncognitoModePrefs::InitializePlatformParentalControls() {
119   g_parental_control_on = base::win::IsParentalControlActivityLoggingOn();
120 }
121 #endif // OS_WIN
122
123 bool IncognitoModePrefs::ArePlatformParentalControlsEnabledCached() {
124 #if defined(OS_WIN)
125   return g_parental_control_on;
126 #elif defined(OS_ANDROID)
127   return chrome::android::ChromiumApplication::AreParentalControlsEnabled();
128 #else
129   return false;
130 #endif
131 }
132