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 PrefRegistrySyncable;
  13
  14 // Specifies Incognito mode availability preferences.
  15 class IncognitoModePrefs {
  16  public:
  17   // Possible values for Incognito mode availability. Please, do not change
  18   // the order of entries since numeric values are exposed to users.
  19   enum Availability {
  20     // Incognito mode enabled. Users may open pages in both Incognito mode and
  21     // normal mode (the default behaviour).
  22     ENABLED = 0,
  23     // Incognito mode disabled. Users may not open pages in Incognito mode.
  24     // Only normal mode is available for browsing.
  25     DISABLED,
  26     // Incognito mode forced. Users may open pages *ONLY* in Incognito mode.
  27     // Normal mode is not available for browsing.
  28     FORCED,
  29
  30     AVAILABILITY_NUM_TYPES
  31   };
  32
  33   // Register incognito related preferences.
  34   static void RegisterUserPrefs(PrefRegistrySyncable* registry);
  35
  36   // Returns kIncognitoModeAvailability preference value stored
  37   // in the given pref service.
  38   static Availability GetAvailability(const PrefService* prefs);
  39
  40   // Sets kIncognitoModeAvailability preference to the specified availability
  41   // value.
  42   static void SetAvailability(PrefService* prefs,
  43                               const Availability availability);
  44
  45   // Converts in_value into the corresponding Availability value. Returns true
  46   // if conversion is successful (in_value is valid). Otherwise, returns false
  47   // and *out_value is set to ENABLED.
  48   static bool IntToAvailability(int in_value, Availability* out_value);
  49
  50   // Returns true if the browser should start in incognito mode.
  51   static bool ShouldLaunchIncognito(const CommandLine& command_line,
  52                                     const PrefService* prefs);
  53
  54  private:
  55   DISALLOW_IMPLICIT_CONSTRUCTORS(IncognitoModePrefs);
  56 };
  57
  58 #endif  // CHROME_BROWSER_PREFS_INCOGNITO_MODE_PREFS_H_