[ChromeOS] WebUI OOBE/Login refactoring.

chrome/browser/chromeos/login/webui_login_display.h

 // Copyright (c) 2011 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #ifndef CHROME_BROWSER_CHROMEOS_LOGIN_WEBUI_LOGIN_DISPLAY_H_
 #define CHROME_BROWSER_CHROMEOS_LOGIN_WEBUI_LOGIN_DISPLAY_H_
 #pragma once
 
 #include <string>
 #include <vector>
 
 #include "base/memory/scoped_ptr.h"
 #include "base/memory/singleton.h"
 #include "chrome/browser/chromeos/login/login_display.h"
 #include "chrome/browser/chromeos/login/user_manager.h"
-#include "chrome/browser/ui/webui/chromeos/login/login_ui.h"
+#include "chrome/browser/ui/webui/chromeos/login/signin_screen_handler.h"
 #include "views/widget/widget.h"
 
 namespace gfx {
 class Rect;
 }  // namespace gfx
 
 namespace chromeos {
 // WebUI-based login UI implementation.
 // This class is a Singleton. It allows the LoginDisplayHost and LoginUIHandler
 // to access it without having to be coupled with each other. It is created with
 // NULL for the delegate and a 0-size rectangle for the background
 // bounds. Before use these values should be set to a sane value. When done with
 // the object, the ExistingUserController should call Destroy and not free the
 // pointer, where as accessing classes should do nothing with the pointer.
 //
 // Expected order of commands to setup for LoginDisplayHost:
 //   WebUILoginDisplay::GetInstance();
 //   set_delegate(delegate);
 //   set_background_bounds(background_bounds());
 //   Init();
 //
 // Expected order of commands to setup for LoginUIHandler:
 //   WebUILoginDisplay::GetInstance();
 //   set_login_handler(this);
 
 class WebUILoginDisplay : public LoginDisplay,
-                          public LoginUIHandlerDelegate {
+                          public SigninScreenHandlerDelegate {
  public:
   virtual ~WebUILoginDisplay();
 
   // Singleton implementation:
   static WebUILoginDisplay* GetInstance();
 
   // Wrapper used to help in routing keyboard key presses into the login
   // screen. This gets the Login Window widget from the Singleton, so that other
   // classes don't need to know we are a Singleton
   static views::Widget* GetLoginWindow();
   views::Widget* LoginWindow();
 
   // LoginDisplay implementation:
   virtual void Destroy() OVERRIDE;
   virtual void Init(const std::vector<UserManager::User>& users,
                     bool show_guest,
                     bool show_new_user) OVERRIDE;
   virtual void OnBeforeUserRemoved(const std::string& username) OVERRIDE;
   virtual void OnUserImageChanged(UserManager::User* user) OVERRIDE;
   virtual void OnUserRemoved(const std::string& username) OVERRIDE;
   virtual void OnFadeOut() OVERRIDE;
   virtual void SetUIEnabled(bool is_enabled) OVERRIDE;
   virtual void SelectPod(int index) OVERRIDE;
   virtual void ShowError(int error_msg_id,
                          int login_attempts,
                          HelpAppLauncher::HelpTopic help_topic_id) OVERRIDE;
 
-  // LoginUIHandlerDelegate
+  // SigninScreenHandlerDelegate implementation:
+  virtual void SetWebUIHandler(
+      LoginDisplayWebUIHandler* webui_handler) OVERRIDE;
   virtual void Login(const std::string& username,
                      const std::string& password) OVERRIDE;
   virtual void LoginAsGuest() OVERRIDE;
 
   void set_login_window(views::Widget* login_window) {
     login_window_ = login_window;
   }
 
  private:
   // Singleton implementation:
   friend struct DefaultSingletonTraits<WebUILoginDisplay>;
   WebUILoginDisplay();
 
   // Set of Users in the systemvisible UserControllers.
   std::vector<UserManager::User> users_;
 
   // Container of the screen we are displaying
   views::Widget* login_window_;
 
+  // Reference to the WebUI handling layer for the login screen
+  LoginDisplayWebUIHandler* webui_handler_;
+
   DISALLOW_COPY_AND_ASSIGN(WebUILoginDisplay);
 };
 
 }  // namespace chromeos
 
 #endif  // CHROME_BROWSER_CHROMEOS_LOGIN_WEBUI_LOGIN_DISPLAY_H_