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      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_CHROMEOS_LOGIN_SCREENS_ERROR_SCREEN_H_
      6 #define CHROME_BROWSER_CHROMEOS_LOGIN_SCREENS_ERROR_SCREEN_H_
      7 
      8 #include "base/basictypes.h"
      9 #include "base/compiler_specific.h"
     10 #include "base/memory/scoped_ptr.h"
     11 #include "base/memory/weak_ptr.h"
     12 #include "chrome/browser/chromeos/login/auth/login_performer.h"
     13 #include "chrome/browser/chromeos/login/screens/error_screen_actor_delegate.h"
     14 #include "chrome/browser/chromeos/login/screens/wizard_screen.h"
     15 #include "chrome/browser/chromeos/login/ui/oobe_display.h"
     16 #include "chrome/browser/chromeos/settings/device_settings_service.h"
     17 
     18 namespace chromeos {
     19 
     20 class ScreenObserver;
     21 
     22 // Controller for the error screen.
     23 class ErrorScreen : public WizardScreen,
     24                     public ErrorScreenActorDelegate,
     25                     public LoginPerformer::Delegate {
     26  public:
     27   enum UIState {
     28     UI_STATE_UNKNOWN = 0,
     29     UI_STATE_UPDATE,
     30     UI_STATE_SIGNIN,
     31     UI_STATE_SUPERVISED,
     32     UI_STATE_KIOSK_MODE,
     33     UI_STATE_LOCAL_STATE_ERROR,
     34     UI_STATE_AUTO_ENROLLMENT_ERROR,
     35     UI_STATE_ROLLBACK_ERROR,
     36   };
     37 
     38   enum ErrorState {
     39     ERROR_STATE_UNKNOWN = 0,
     40     ERROR_STATE_PORTAL,
     41     ERROR_STATE_OFFLINE,
     42     ERROR_STATE_PROXY,
     43     ERROR_STATE_AUTH_EXT_TIMEOUT,
     44     ERROR_STATE_KIOSK_ONLINE
     45   };
     46 
     47   ErrorScreen(ScreenObserver* screen_observer, ErrorScreenActor* actor);
     48   virtual ~ErrorScreen();
     49 
     50   // WizardScreen implementation.
     51   virtual void PrepareToShow() OVERRIDE;
     52   virtual void Show() OVERRIDE;
     53   virtual void Hide() OVERRIDE;
     54   virtual std::string GetName() const OVERRIDE;
     55 
     56   // ErrorScreenActorDelegate implementation:
     57   virtual void OnErrorShow() OVERRIDE;
     58   virtual void OnErrorHide() OVERRIDE;
     59   virtual void OnLaunchOobeGuestSession() OVERRIDE;
     60 
     61   // LoginPerformer::Delegate implementation:
     62   virtual void OnAuthFailure(const AuthFailure& error) OVERRIDE;
     63   virtual void OnAuthSuccess(const UserContext& user_context) OVERRIDE;
     64   virtual void OnOffTheRecordAuthSuccess() OVERRIDE;
     65   virtual void OnPasswordChangeDetected() OVERRIDE;
     66   virtual void WhiteListCheckFailed(const std::string& email) OVERRIDE;
     67   virtual void PolicyLoadFailed() OVERRIDE;
     68   virtual void OnOnlineChecked(const std::string& username,
     69                                bool success) OVERRIDE;
     70 
     71   // Initializes captive portal dialog and shows that if needed.
     72   void FixCaptivePortal();
     73 
     74   // Shows captive portal dialog.
     75   void ShowCaptivePortal();
     76 
     77   // Hides captive portal dialog.
     78   void HideCaptivePortal();
     79 
     80   // Sets current UI state.
     81   void SetUIState(UIState ui_state);
     82 
     83   UIState GetUIState() const;
     84 
     85   // Sets current error screen content according to current UI state,
     86   // |error_state|, and |network|.
     87   void SetErrorState(ErrorState error_state, const std::string& network);
     88 
     89   // Toggles the guest sign-in prompt.
     90   void AllowGuestSignin(bool allow);
     91 
     92   // Toggles the connection pending indicator.
     93   void ShowConnectingIndicator(bool show);
     94 
     95   void set_parent_screen(OobeDisplay::Screen parent_screen) {
     96     parent_screen_ = parent_screen;
     97   }
     98   OobeDisplay::Screen parent_screen() const { return parent_screen_; }
     99 
    100  private:
    101   // Handles the response of an ownership check and starts the guest session if
    102   // applicable.
    103   void StartGuestSessionAfterOwnershipCheck(
    104       DeviceSettingsService::OwnershipStatus ownership_status);
    105 
    106   void* volatile canary_1_;  // For debugging of https://crbug.com/396557.
    107   ErrorScreenActor* actor_;
    108   void* volatile canary_2_;
    109 
    110   OobeDisplay::Screen parent_screen_;
    111 
    112   scoped_ptr<LoginPerformer> guest_login_performer_;
    113 
    114   base::WeakPtrFactory<ErrorScreen> weak_factory_;
    115 
    116   DISALLOW_COPY_AND_ASSIGN(ErrorScreen);
    117 };
    118 
    119 }  // namespace chromeos
    120 
    121 #endif  // CHROME_BROWSER_CHROMEOS_LOGIN_SCREENS_ERROR_SCREEN_H_
    122