chrome/browser/prefs/incognito_mode_prefs.h

   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 #ifndef CHROME_BROWSER_PREFS_INCOGNITO_MODE_PREFS_H_
   6 #define CHROME_BROWSER_PREFS_INCOGNITO_MODE_PREFS_H_
   7
   8 #include "base/basictypes.h"
   9
  10 class CommandLine;
  11 class PrefService;
  12 class Profile;
  13
  14 namespace user_prefs {
  15 class PrefRegistrySyncable;
  16 }
  17
  18 // Specifies Incognito mode availability preferences.
  19 class IncognitoModePrefs {
  20  public:
  21   // Possible values for Incognito mode availability. Please, do not change
  22   // the order of entries since numeric values are exposed to users.
  23   enum Availability {
  24     // Incognito mode enabled. Users may open pages in both Incognito mode and
  25     // normal mode (the default behaviour).
  26     ENABLED = 0,
  27     // Incognito mode disabled. Users may not open pages in Incognito mode.
  28     // Only normal mode is available for browsing.
  29     DISABLED,
  30     // Incognito mode forced. Users may open pages *ONLY* in Incognito mode.
  31     // Normal mode is not available for browsing.
  32     FORCED,
  33
  34     AVAILABILITY_NUM_TYPES
  35   };
  36
  37   // Register incognito related preferences.
  38   static void RegisterProfilePrefs(user_prefs::PrefRegistrySyncable* registry);
  39
  40   // Returns kIncognitoModeAvailability preference value stored
  41   // in the given pref service.
  42   static Availability GetAvailability(const PrefService* prefs);
  43
  44   // Sets kIncognitoModeAvailability preference to the specified availability
  45   // value.
  46   static void SetAvailability(PrefService* prefs,
  47                               const Availability availability);
  48
  49   // Converts in_value into the corresponding Availability value. Returns true
  50   // if conversion is successful (in_value is valid). Otherwise, returns false
  51   // and *out_value is set to ENABLED.
  52   static bool IntToAvailability(int in_value, Availability* out_value);
  53
  54   // Returns true if the browser should start in incognito mode.
  55   static bool ShouldLaunchIncognito(const CommandLine& command_line,
  56                                     const PrefService* prefs);
  57
  58   // Returns true if |profile| can open a new Browser. This checks the incognito
  59   // availability policies and verifies if the |profile| type is allowed to
  60   // open new windows.
  61   static bool CanOpenBrowser(Profile* profile);
  62
  63  private:
  64   // Returns whether parental controls have been enabled on the platform, which
  65   // if enabled will overrule the Availability as configured in prefs.
  66   static bool ArePlatformParentalControlsEnabled();
  67
  68   DISALLOW_IMPLICIT_CONSTRUCTORS(IncognitoModePrefs);
  69 };
  70
  71 #endif  // CHROME_BROWSER_PREFS_INCOGNITO_MODE_PREFS_H_