chrome/browser/chromeos/login/screens/reset_screen.h

   1 // Copyright (c) 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_SCREENS_RESET_SCREEN_H_
   6 #define CHROME_BROWSER_CHROMEOS_LOGIN_SCREENS_RESET_SCREEN_H_
   7
   8 #include <string>
   9
  10 #include "base/compiler_specific.h"
  11 #include "base/memory/ref_counted.h"
  12 #include "base/memory/weak_ptr.h"
  13 #include "chrome/browser/chromeos/login/help_app_launcher.h"
  14 #include "chrome/browser/chromeos/login/screens/reset_model.h"
  15 #include "chromeos/dbus/update_engine_client.h"
  16
  17
  18 namespace chromeos {
  19
  20 class ErrorScreen;
  21 class ResetView;
  22
  23 // Representation independent class that controls screen showing reset to users.
  24 class ResetScreen : public ResetModel,
  25                     public UpdateEngineClient::Observer {
  26  public:
  27   ResetScreen(BaseScreenDelegate* base_screen_delegate,
  28               ResetView* view);
  29   ~ResetScreen() override;
  30
  31   // ResetModel implementation:
  32   void PrepareToShow() override;
  33   void Show() override;
  34   void Hide() override;
  35   void OnViewDestroyed(ResetView* view) override;
  36   void OnUserAction(const std::string& action_id) override;
  37
  38   // UpdateEngineClient::Observer implementation:
  39   void UpdateStatusChanged(const UpdateEngineClient::Status& status) override;
  40
  41   void OnRollbackCheck(bool can_rollback);
  42
  43  private:
  44
  45   enum State {
  46     STATE_RESTART_REQUIRED = 0,
  47     STATE_REVERT_PROMISE,
  48     STATE_POWERWASH_PROPOSAL,
  49     STATE_ERROR
  50   };
  51
  52   void OnCancel();
  53   void OnPowerwash();
  54   void OnRestart();
  55   void OnToggleRollback();
  56   void OnShowConfirm();
  57   void OnLearnMore();
  58   void OnConfirmationDismissed();
  59
  60   // Returns an instance of the error screen.
  61   ErrorScreen* GetErrorScreen();
  62
  63   ResetView* view_;
  64
  65   // Help application used for help dialogs.
  66   scoped_refptr<HelpAppLauncher> help_app_;
  67
  68   base::WeakPtrFactory<ResetScreen> weak_ptr_factory_;
  69
  70   DISALLOW_COPY_AND_ASSIGN(ResetScreen);
  71 };
  72
  73 }  // namespace chromeos
  74
  75 #endif  // CHROME_BROWSER_CHROMEOS_LOGIN_SCREENS_RESET_SCREEN_H_