chromeos/login/login_state.h

   1 // Copyright (c) 2013 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 CHROMEOS_LOGIN_LOGIN_STATE_H_
   6 #define CHROMEOS_LOGIN_LOGIN_STATE_H_
   7
   8 #include "base/basictypes.h"
   9 #include "base/observer_list.h"
  10 #include "chromeos/chromeos_export.h"
  11
  12 namespace chromeos {
  13
  14 // Tracks the login state of chrome, accessible to Ash and other chromeos code.
  15 class CHROMEOS_EXPORT LoginState {
  16  public:
  17   enum LoggedInState {
  18     LOGGED_IN_NONE,       // Not logged in
  19     LOGGED_IN_SAFE_MODE,  // Not logged in and login not allowed for non-owners
  20     LOGGED_IN_ACTIVE      // A user has logged in
  21   };
  22
  23   enum LoggedInUserType {
  24     LOGGED_IN_USER_NONE,             // User is not logged in
  25     LOGGED_IN_USER_REGULAR,          // A regular user is logged in
  26     LOGGED_IN_USER_OWNER,            // The owner of the device is logged in
  27     LOGGED_IN_USER_GUEST,            // A guest is logged in (i.e. incognito)
  28     LOGGED_IN_USER_PUBLIC_ACCOUNT,   // A user is logged in to a public session.
  29     LOGGED_IN_USER_SUPERVISED,       // A supervised user is logged in
  30     LOGGED_IN_USER_KIOSK_APP         // Is in kiosk app mode
  31   };
  32
  33   class Observer {
  34    public:
  35     // Called when either the login state or the logged in user type changes.
  36     virtual void LoggedInStateChanged() = 0;
  37
  38    protected:
  39     virtual ~Observer() {}
  40   };
  41
  42   // Manage singleton instance.
  43   static void Initialize();
  44   static void Shutdown();
  45   static LoginState* Get();
  46   static bool IsInitialized();
  47
  48   // Add/remove observers.
  49   void AddObserver(Observer* observer);
  50   void RemoveObserver(Observer* observer);
  51
  52   // Sets the logged in state, user type, and primary user hash when the
  53   // primary user initialy logs in. Also notifies observers.
  54   void SetLoggedInStateAndPrimaryUser(
  55       LoggedInState state,
  56       LoggedInUserType type,
  57       const std::string& primary_user_hash);
  58
  59   // Sets the logged in state and user type. Also notifies observers. Used
  60   // in tests or situations where there is no primary user (e.g. from the
  61   // login screen).
  62   void SetLoggedInState(LoggedInState state, LoggedInUserType type);
  63
  64   // Gets the logged in user type.
  65   LoggedInUserType GetLoggedInUserType() const;
  66
  67   // Returns true if a user is considered to be logged in.
  68   bool IsUserLoggedIn() const;
  69
  70   // Returns true if |logged_in_state_| is safe mode (i.e. the user is not yet
  71   // logged in, and only the owner will be allowed to log in).
  72   bool IsInSafeMode() const;
  73
  74   // Returns true if logged in to a guest session.
  75   bool IsGuestSessionUser() const;
  76
  77   // Returns true if logged in to a public session.
  78   bool IsPublicSessionUser() const;
  79
  80   // Returns true if logged in as a kiosk app.
  81   bool IsKioskApp() const;
  82
  83   // Whether a network profile is created for the user.
  84   bool UserHasNetworkProfile() const;
  85
  86   // Returns true if the user is an authenticated user (i.e. the user is not
  87   // using an anonymous session like public or guest session)
  88   bool IsUserAuthenticated() const;
  89
  90   // Returns true if the user is authenticated by logging into Google account
  91   // (i.e. not using an anonymous nor supervised session).
  92   bool IsUserGaiaAuthenticated() const;
  93
  94   void set_always_logged_in(bool always_logged_in) {
  95     always_logged_in_ = always_logged_in;
  96   }
  97
  98   const std::string& primary_user_hash() const { return primary_user_hash_; }
  99
 100  private:
 101   LoginState();
 102   virtual ~LoginState();
 103
 104   void NotifyObservers();
 105
 106   LoggedInState logged_in_state_;
 107   LoggedInUserType logged_in_user_type_;
 108   std::string primary_user_hash_;
 109   base::ObserverList<Observer> observer_list_;
 110
 111   // If true, it always thinks the current status as logged in. Set to true by
 112   // default running on a Linux desktop without flags and test cases. To test
 113   // behaviors with a specific login state, call set_always_logged_in(false).
 114   bool always_logged_in_;
 115
 116   DISALLOW_COPY_AND_ASSIGN(LoginState);
 117 };
 118
 119 }  // namespace chromeos
 120
 121 #endif  // CHROMEOS_LOGIN_LOGIN_STATE_H_