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 "chrome/browser/prefs/pref_service.h"
  10 #include "chrome/common/chrome_switches.h"
  11 #include "chrome/common/pref_names.h"
  12
  13 #if defined(OS_WIN)
  14 #include "base/win/metro.h"
  15 #endif  // OS_WIN
  16
  17 // static
  18 bool IncognitoModePrefs::IntToAvailability(int in_value,
  19                                            Availability* out_value) {
  20   if (in_value < 0 || in_value >= AVAILABILITY_NUM_TYPES) {
  21     *out_value = ENABLED;
  22     return false;
  23   }
  24   *out_value = static_cast<Availability>(in_value);
  25   return true;
  26 }
  27
  28 // static
  29 IncognitoModePrefs::Availability IncognitoModePrefs::GetAvailability(
  30     const PrefService* pref_service) {
  31   DCHECK(pref_service);
  32   int pref_value = pref_service->GetInteger(prefs::kIncognitoModeAvailability);
  33   Availability result = IncognitoModePrefs::ENABLED;
  34   bool valid = IntToAvailability(pref_value, &result);
  35   DCHECK(valid);
  36 #if defined(OS_WIN)
  37   // Disable incognito mode windows if parental controls are on. This is only
  38   // for Windows Vista and above.
  39   if (base::win::IsParentalControlActivityLoggingOn()) {
  40     if (result == IncognitoModePrefs::FORCED)
  41       LOG(ERROR) << "Ignoring FORCED incognito. Parental control logging on";
  42     return IncognitoModePrefs::DISABLED;
  43   }
  44 #endif  // OS_WIN
  45   return result;
  46 }
  47
  48 // static
  49 void IncognitoModePrefs::SetAvailability(PrefService* prefs,
  50                                          const Availability availability) {
  51   prefs->SetInteger(prefs::kIncognitoModeAvailability, availability);
  52 }
  53
  54 // static
  55 void IncognitoModePrefs::RegisterUserPrefs(PrefService* pref_service) {
  56   DCHECK(pref_service);
  57   pref_service->RegisterIntegerPref(prefs::kIncognitoModeAvailability,
  58                                     IncognitoModePrefs::ENABLED,
  59                                     PrefService::UNSYNCABLE_PREF);
  60 }
  61
  62 // static
  63 bool IncognitoModePrefs::ShouldLaunchIncognito(
  64     const CommandLine& command_line,
  65     const PrefService* prefs) {
  66   Availability incognito_avail = GetAvailability(prefs);
  67   return incognito_avail != IncognitoModePrefs::DISABLED &&
  68          (command_line.HasSwitch(switches::kIncognito) ||
  69           incognito_avail == IncognitoModePrefs::FORCED);
  70 }