incognito_mode_prefs.h revision 868fa2fe829687343ffae624259930155e16dbd8 
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
10class CommandLine;
11class PrefService;
12class Profile;
13
14namespace user_prefs {
15class PrefRegistrySyncable;
16}
17
18// Specifies Incognito mode availability preferences.
19class 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 RegisterUserPrefs(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  DISALLOW_IMPLICIT_CONSTRUCTORS(IncognitoModePrefs);
65};
66
67#endif  // CHROME_BROWSER_PREFS_INCOGNITO_MODE_PREFS_H_
68