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