chrome/browser/chromeos/login/screens/screen_observer.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_CHROMEOS_LOGIN_SCREENS_SCREEN_OBSERVER_H_
   6 #define CHROME_BROWSER_CHROMEOS_LOGIN_SCREENS_SCREEN_OBSERVER_H_
   7
   8 #include <string>
   9
  10 namespace chromeos {
  11
  12 class ErrorScreen;
  13 class WizardScreen;
  14
  15 // Interface that handles notifications received from any of login wizard
  16 // screens.
  17 class ScreenObserver {
  18  public:
  19   // Each login screen or a view shown within login wizard view is itself a
  20   // state. Upon exit each view returns one of the results by calling
  21   // OnExit() method. Depending on the result and the current view or state
  22   // login wizard decides what is the next view to show. There must be an
  23   // exit code for each way to exit the screen for each screen.
  24   enum ExitCodes {
  25     // "Continue" was pressed on network screen and network is online.
  26     NETWORK_CONNECTED,
  27     // Connection failed while trying to load a WebPageScreen.
  28     CONNECTION_FAILED,
  29     UPDATE_INSTALLED,
  30     UPDATE_NOUPDATE,
  31     UPDATE_ERROR_CHECKING_FOR_UPDATE,
  32     UPDATE_ERROR_UPDATING,
  33     USER_IMAGE_SELECTED,
  34     EULA_ACCEPTED,
  35     EULA_BACK,
  36     ENTERPRISE_ENROLLMENT_COMPLETED,
  37     ENTERPRISE_AUTO_MAGIC_ENROLLMENT_COMPLETED,
  38     ENTERPRISE_ENROLLMENT_BACK,
  39     RESET_CANCELED,
  40     KIOSK_AUTOLAUNCH_CANCELED,
  41     KIOSK_AUTOLAUNCH_CONFIRMED,
  42     KIOSK_ENABLE_COMPLETED,
  43     TERMS_OF_SERVICE_DECLINED,
  44     TERMS_OF_SERVICE_ACCEPTED,
  45     WRONG_HWID_WARNING_SKIPPED,
  46     EXIT_CODES_COUNT  // not a real code, must be the last
  47   };
  48
  49   // Method called by a screen when user's done with it.
  50   virtual void OnExit(ExitCodes exit_code) = 0;
  51
  52   // Forces current screen showing.
  53   virtual void ShowCurrentScreen() = 0;
  54
  55   // Notify about new user names and password. It is used to autologin
  56   // just created user without asking the same info once again.
  57   virtual void OnSetUserNamePassword(const std::string& username,
  58                                      const std::string& password) = 0;
  59
  60   // Whether usage statistics reporting is enabled on EULA screen.
  61   virtual void SetUsageStatisticsReporting(bool val) = 0;
  62   virtual bool GetUsageStatisticsReporting() const = 0;
  63
  64   virtual ErrorScreen* GetErrorScreen() = 0;
  65   virtual void ShowErrorScreen() = 0;
  66   virtual void HideErrorScreen(WizardScreen* parent_screen) = 0;
  67
  68  protected:
  69   virtual ~ScreenObserver() {}
  70 };
  71
  72 }  // namespace chromeos
  73
  74 #endif  // CHROME_BROWSER_CHROMEOS_LOGIN_SCREENS_SCREEN_OBSERVER_H_