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      1 // Copyright 2014 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_ENROLLMENT_AUTO_ENROLLMENT_CHECK_SCREEN_H_
      6 #define CHROME_BROWSER_CHROMEOS_LOGIN_ENROLLMENT_AUTO_ENROLLMENT_CHECK_SCREEN_H_
      7 
      8 #include "base/compiler_specific.h"
      9 #include "base/macros.h"
     10 #include "base/memory/scoped_ptr.h"
     11 #include "chrome/browser/chromeos/login/enrollment/auto_enrollment_check_screen_actor.h"
     12 #include "chrome/browser/chromeos/login/enrollment/auto_enrollment_controller.h"
     13 #include "chrome/browser/chromeos/login/screens/error_screen.h"
     14 #include "chromeos/network/portal_detector/network_portal_detector.h"
     15 
     16 namespace chromeos {
     17 
     18 class ScreenManager;
     19 class ScreenObserver;
     20 
     21 // Handles the control flow after OOBE auto-update completes to wait for the
     22 // enterprise auto-enrollment check that happens as part of OOBE. This includes
     23 // keeping track of current auto-enrollment state and displaying and updating
     24 // the error screen upon failures. Similar to a screen controller, but it
     25 // doesn't actually drive a dedicated screen.
     26 class AutoEnrollmentCheckScreen
     27     : public AutoEnrollmentCheckScreenActor::Delegate,
     28       public WizardScreen,
     29       public NetworkPortalDetector::Observer {
     30  public:
     31   AutoEnrollmentCheckScreen(
     32       ScreenObserver* observer,
     33       AutoEnrollmentCheckScreenActor* actor);
     34   virtual ~AutoEnrollmentCheckScreen();
     35 
     36   static AutoEnrollmentCheckScreen* Get(ScreenManager* manager);
     37 
     38   // Hands over OOBE control to this AutoEnrollmentCheckStep. It'll return the
     39   // flow back to the caller via the |screen_observer_|'s OnExit function.
     40   void Start();
     41 
     42   void set_auto_enrollment_controller(
     43       AutoEnrollmentController* auto_enrollment_controller) {
     44     auto_enrollment_controller_ = auto_enrollment_controller;
     45   }
     46 
     47   // WizardScreen implementation:
     48   virtual void PrepareToShow() OVERRIDE;
     49   virtual void Show() OVERRIDE;
     50   virtual void Hide() OVERRIDE;
     51   virtual std::string GetName() const OVERRIDE;
     52 
     53   // AutoEnrollmentCheckScreenActor::Delegate implementation:
     54   virtual void OnExit() OVERRIDE;
     55   virtual void OnActorDestroyed(AutoEnrollmentCheckScreenActor* actor) OVERRIDE;
     56 
     57   // NetworkPortalDetector::Observer implementation:
     58   virtual void OnPortalDetectionCompleted(
     59       const NetworkState* network,
     60       const NetworkPortalDetector::CaptivePortalState& state) OVERRIDE;
     61 
     62  private:
     63   // Handles update notifications regarding the auto-enrollment check.
     64   void OnAutoEnrollmentCheckProgressed(policy::AutoEnrollmentState state);
     65 
     66   // Handles a state update, updating the UI and saving the state.
     67   void UpdateState(
     68       NetworkPortalDetector::CaptivePortalStatus new_captive_portal_status,
     69       policy::AutoEnrollmentState new_auto_enrollment_state);
     70 
     71   // Configures the UI to reflect |new_captive_portal_status|. Returns true if
     72   // and only if a UI change has been made.
     73   bool UpdateCaptivePortalStatus(
     74       NetworkPortalDetector::CaptivePortalStatus new_captive_portal_status);
     75 
     76   // Configures the UI to reflect |auto_enrollment_state|. Returns true if and
     77   // only if a UI change has been made.
     78   bool UpdateAutoEnrollmentState(
     79       policy::AutoEnrollmentState auto_enrollment_state);
     80 
     81   // Configures the error screen.
     82   void ShowErrorScreen(ErrorScreen::ErrorState error_state);
     83 
     84   // Signals completion. No further code should run after a call to this
     85   // function as the owner might destroy |this| in response.
     86   void SignalCompletion();
     87 
     88   // Checks if the enrollment status check is needed. It can be disabled either
     89   // by command line flags, build configuration or might have finished already.
     90   bool IsStartNeeded();
     91 
     92   AutoEnrollmentCheckScreenActor* actor_;
     93   AutoEnrollmentController* auto_enrollment_controller_;
     94 
     95   scoped_ptr<AutoEnrollmentController::ProgressCallbackList::Subscription>
     96       auto_enrollment_progress_subscription_;
     97 
     98   NetworkPortalDetector::CaptivePortalStatus captive_portal_status_;
     99   policy::AutoEnrollmentState auto_enrollment_state_;
    100 
    101   DISALLOW_COPY_AND_ASSIGN(AutoEnrollmentCheckScreen);
    102 };
    103 
    104 }  // namespace chromeos
    105 
    106 #endif  // CHROME_BROWSER_CHROMEOS_LOGIN_ENROLLMENT_AUTO_ENROLLMENT_CHECK_SCREEN_H_
    107