chrome/browser/ui/webui/chromeos/login/enrollment_screen_handler.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_UI_WEBUI_CHROMEOS_LOGIN_ENROLLMENT_SCREEN_HANDLER_H_
   6 #define CHROME_BROWSER_UI_WEBUI_CHROMEOS_LOGIN_ENROLLMENT_SCREEN_HANDLER_H_
   7
   8 #include <string>
   9 #include <vector>
  10
  11 #include "base/basictypes.h"
  12 #include "base/callback_forward.h"
  13 #include "base/memory/scoped_ptr.h"
  14 #include "base/memory/scoped_vector.h"
  15 #include "chrome/browser/browsing_data/browsing_data_remover.h"
  16 #include "chrome/browser/chromeos/login/enrollment/enrollment_screen_actor.h"
  17 #include "chrome/browser/ui/webui/chromeos/login/base_screen_handler.h"
  18
  19 namespace policy {
  20 class PolicyOAuth2TokenFetcher;
  21 }
  22
  23 namespace chromeos {
  24
  25 class AuthenticatedUserEmailRetriever;
  26
  27 // WebUIMessageHandler implementation which handles events occurring on the
  28 // page, such as the user pressing the signin button.
  29 class EnrollmentScreenHandler
  30     : public BaseScreenHandler,
  31       public EnrollmentScreenActor,
  32       public BrowsingDataRemover::Observer {
  33  public:
  34   EnrollmentScreenHandler();
  35   virtual ~EnrollmentScreenHandler();
  36
  37   // Implements WebUIMessageHandler:
  38   virtual void RegisterMessages() OVERRIDE;
  39
  40   // Implements EnrollmentScreenActor:
  41   virtual void SetParameters(Controller* controller,
  42                              bool is_auto_enrollment,
  43                              bool can_exit_enrollment,
  44                              const std::string& user) OVERRIDE;
  45   virtual void PrepareToShow() OVERRIDE;
  46   virtual void Show() OVERRIDE;
  47   virtual void Hide() OVERRIDE;
  48   virtual void FetchOAuthToken() OVERRIDE;
  49   virtual void ResetAuth(const base::Closure& callback) OVERRIDE;
  50   virtual void ShowSigninScreen() OVERRIDE;
  51   virtual void ShowEnrollmentSpinnerScreen() OVERRIDE;
  52   virtual void ShowLoginSpinnerScreen() OVERRIDE;
  53   virtual void ShowAuthError(const GoogleServiceAuthError& error) OVERRIDE;
  54   virtual void ShowEnrollmentStatus(policy::EnrollmentStatus status) OVERRIDE;
  55   virtual void ShowUIError(UIError error_code) OVERRIDE;
  56
  57   // Implements BaseScreenHandler:
  58   virtual void Initialize() OVERRIDE;
  59   virtual void DeclareLocalizedValues(LocalizedValuesBuilder* builder) OVERRIDE;
  60
  61   // Implements BrowsingDataRemover::Observer:
  62   virtual void OnBrowsingDataRemoverDone() OVERRIDE;
  63
  64  private:
  65   // Handlers for WebUI messages.
  66   void HandleRetrieveAuthenticatedUserEmail(double attempt_token);
  67   void HandleClose(const std::string& reason);
  68   void HandleCompleteLogin(const std::string& user);
  69   void HandleRetry();
  70
  71   // Shows a given enrollment step.
  72   void ShowStep(const char* step);
  73
  74   // Display the given i18n resource as error message.
  75   void ShowError(int message_id, bool retry);
  76
  77   // Display the given string as error message.
  78   void ShowErrorMessage(const std::string& message, bool retry);
  79
  80   // Display the given i18n string as a progress message.
  81   void ShowWorking(int message_id);
  82
  83   // Handles completion of the OAuth2 token fetch attempt.
  84   void OnTokenFetched(const std::string& token,
  85                       const GoogleServiceAuthError& error);
  86
  87   // Shows the screen.
  88   void DoShow();
  89
  90   // Keeps the controller for this actor.
  91   Controller* controller_;
  92
  93   bool show_on_init_;
  94
  95   // Whether this is an auto-enrollment screen.
  96   bool is_auto_enrollment_;
  97
  98   // True of we can exit enrollment and return back to the regular login flow.
  99   bool can_exit_enrollment_;
 100
 101   // Whether an enrollment attempt has failed.
 102   bool enrollment_failed_once_;
 103
 104   // Username of the user signing in.
 105   std::string user_;
 106
 107   // This intentionally lives here and not in the controller, since it needs to
 108   // execute requests in the context of the profile that displays the webui.
 109   scoped_ptr<policy::PolicyOAuth2TokenFetcher> oauth_fetcher_;
 110
 111   // The browsing data remover instance currently active, if any.
 112   BrowsingDataRemover* browsing_data_remover_;
 113
 114   // The callbacks to invoke after browsing data has been cleared.
 115   std::vector<base::Closure> auth_reset_callbacks_;
 116
 117   // Helper that retrieves the authenticated user's e-mail address.
 118   scoped_ptr<AuthenticatedUserEmailRetriever> email_retriever_;
 119
 120   DISALLOW_COPY_AND_ASSIGN(EnrollmentScreenHandler);
 121 };
 122
 123 }  // namespace chromeos
 124
 125 #endif  // CHROME_BROWSER_UI_WEBUI_CHROMEOS_LOGIN_ENROLLMENT_SCREEN_HANDLER_H_