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      1 // Copyright (c) 2011 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_VIEWS_LOGIN_DISPLAY_H_
      6 #define CHROME_BROWSER_CHROMEOS_LOGIN_VIEWS_LOGIN_DISPLAY_H_
      7 #pragma once
      8 
      9 #include <string>
     10 #include <vector>
     11 
     12 #include "base/compiler_specific.h"
     13 #include "base/memory/ref_counted.h"
     14 #include "chrome/browser/chromeos/login/login_display.h"
     15 #include "chrome/browser/chromeos/login/message_bubble.h"
     16 #include "chrome/browser/chromeos/login/user_controller.h"
     17 #include "ui/gfx/rect.h"
     18 
     19 namespace chromeos {
     20 
     21 class HelpAppLauncher;
     22 class MessageBubble;
     23 
     24 // Views-based login UI implementation.
     25 // Uses UserController for each user pod / guest pod / new user pod and
     26 // ExistingUserView / GuestUserView / NewUserView as their views.
     27 // When Init is invoked, a UserController is created for each of the Users's
     28 // in the UserManager (including one for new user and one for Guest login),
     29 // and the window manager is then told to show the windows.
     30 class ViewsLoginDisplay : public LoginDisplay,
     31                           public UserController::Delegate,
     32                           public MessageBubbleDelegate {
     33  public:
     34   ViewsLoginDisplay(LoginDisplay::Delegate* delegate,
     35                     const gfx::Rect& background_bounds);
     36   virtual ~ViewsLoginDisplay();
     37 
     38   // LoginDisplay implementation:
     39   virtual void Init(const std::vector<UserManager::User>& users,
     40                     bool show_guest,
     41                     bool show_new_user);
     42   virtual void OnBeforeUserRemoved(const std::string& username);
     43   virtual void OnUserImageChanged(UserManager::User* user);
     44   virtual void OnUserRemoved(const std::string& username);
     45   virtual void OnFadeOut();
     46   virtual void SetUIEnabled(bool is_enabled);
     47   virtual void ShowError(int error_msg_id,
     48                          int login_attempts,
     49                          HelpAppLauncher::HelpTopic help_topic_id);
     50 
     51   // UserController::Delegate implementation:
     52   virtual void CreateAccount() OVERRIDE;
     53   virtual void Login(UserController* source, const string16& password) OVERRIDE;
     54   virtual void LoginAsGuest() OVERRIDE;
     55   virtual void ClearErrors() OVERRIDE;
     56   virtual void OnUserSelected(UserController* source) OVERRIDE;
     57   virtual void RemoveUser(UserController* source) OVERRIDE;
     58   virtual void SelectUser(int index) OVERRIDE;
     59   virtual void StartEnterpriseEnrollment() OVERRIDE;
     60 
     61   // Overridden from views::MessageBubbleDelegate:
     62   virtual void BubbleClosing(Bubble* bubble, bool closed_by_escape) {
     63     bubble_ = NULL;
     64   }
     65   virtual bool CloseOnEscape() { return true; }
     66   virtual bool FadeInOnShow() { return false; }
     67   virtual void OnHelpLinkActivated();
     68 
     69  private:
     70   // Returns existing UserController instance by |email|.
     71   // NULL is returned if relevant instance is not found.
     72   UserController* GetUserControllerByEmail(const std::string& email);
     73 
     74   // Pointer to shown message bubble. We don't need to delete it because
     75   // it will be deleted on bubble closing.
     76   MessageBubble* bubble_;
     77 
     78   // UserController that corresponds user that's in process of being removed.
     79   // Has meaningful value only between OnBeforeUserRemoved()
     80   // and OnUserRemoved() calls.
     81   UserController* controller_for_removal_;
     82 
     83   // The set of visible UserControllers.
     84   std::vector<UserController*> controllers_;
     85 
     86   // Last error message ID.
     87   int error_msg_id_;
     88 
     89   // Help application used for help dialogs.
     90   scoped_refptr<HelpAppLauncher> help_app_;
     91 
     92   // Last error help topic ID.
     93   HelpAppLauncher::HelpTopic help_topic_id_;
     94 
     95   // The set of invisible UserControllers.
     96   std::vector<UserController*> invisible_controllers_;
     97 
     98   // Index of selected user (from the set of visible users).
     99   size_t selected_view_index_;
    100 
    101   DISALLOW_COPY_AND_ASSIGN(ViewsLoginDisplay);
    102 };
    103 
    104 }  // namespace chromeos
    105 
    106 #endif  // CHROME_BROWSER_CHROMEOS_LOGIN_VIEWS_LOGIN_DISPLAY_H_
    107