Refactor user pods to use authType property for distinct authentication modes.

chrome/browser/chromeos/login/login_display.h

 // Copyright (c) 2012 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_LOGIN_DISPLAY_H_
 #define CHROME_BROWSER_CHROMEOS_LOGIN_LOGIN_DISPLAY_H_
 
 #include <string>
 #include <vector>
 
 #include "base/callback.h"
 #include "base/strings/string16.h"
 #include "chrome/browser/chromeos/login/help_app_launcher.h"
 #include "chrome/browser/chromeos/login/remove_user_delegate.h"
 #include "chrome/browser/chromeos/login/user.h"
 #include "chrome/browser/chromeos/login/user_manager.h"
 #include "ui/gfx/image/image.h"
 #include "ui/gfx/native_widget_types.h"
 #include "ui/gfx/rect.h"
 
 namespace chromeos {
 
+class ScreenLocker;

[xiyuan, 2014/02/16 18:38:14]

nit: This seems not used.

[Tim Song, 2014/02/18 23:32:44]

Done.

+
 // TODO(nkostylev): Extract interface, create a BaseLoginDisplay class.
 // An abstract class that defines login UI implementation.
 class LoginDisplay : public RemoveUserDelegate {
  public:
+  // Supported authentication types for login.
+  enum AuthType {
+    // Authenticates using the user's regular password.
+    SYSTEM_PASSWORD,

[xiyuan, 2014/02/16 18:38:14]

nit: OFFLINE_PASSWORD.  SYSTEM_PASSWORD is a bit confusing and does not
emphasize the key difference from this and Gaia one below. 

[Tim Song, 2014/02/18 23:32:44]

Done.

+
+    // Authenticates by forced online GAIA sign in.
+    ONLINE_SIGN_IN,
+
+    // Authenticates with a 4 digit numeric pin.
+    NUMERIC_PIN,
+
+    // Authenticates by clicking pod when it is focused.
+    USER_CLICK,
+  };
+
   // Sign in error IDs that require detailed error screen and not just
   // a simple error bubble.
   enum SigninError {
     // Shown in case of critical TPM error.
     TPM_ERROR,
   };
 
   class Delegate {
    public:
     // Cancels current password changed flow.
@@ skipping 110 matching lines @@
   virtual void SelectPod(int index) = 0;
 
   // Displays a banner on the login screen containing |message|.
   virtual void ShowBannerMessage(const std::string& message) = 0;
 
   // Shows a button with an icon inside the user pod of |username|.
   virtual void ShowUserPodButton(const std::string& username,
                                  const std::string& iconURL,
                                  const base::Closure& click_callback) = 0;
 
+  // Hides the user pod button for a user.
+  virtual void HideUserPodButton(const std::string& username) = 0;
+
+  // Set the authentication type to be used on the lock screen.
+  virtual void SetAuthType(const std::string& username,
+                           AuthType auth_type,
+                           const std::string& initial_value) = 0;
+
+  // Returns the authentication type used for |username|.
+  virtual AuthType GetAuthType(const std::string& username) const = 0;
+
   // Displays simple error bubble with |error_msg_id| specified.
   // |login_attempts| shows number of login attempts made by current user.
   // |help_topic_id| is additional help topic that is presented as link.
   virtual void ShowError(int error_msg_id,
                          int login_attempts,
                          HelpAppLauncher::HelpTopic help_topic_id) = 0;
 
   // Displays detailed error screen for error with ID |error_id|.
   virtual void ShowErrorScreen(LoginDisplay::SigninError error_id) = 0;
 
@@ skipping 38 matching lines @@
   // in redesigned login stack.
   // Login stack (and this object) will be recreated for next user sign in.
   bool is_signin_completed_;
 
   DISALLOW_COPY_AND_ASSIGN(LoginDisplay);
 };
 
 }  // namespace chromeos
 
 #endif  // CHROME_BROWSER_CHROMEOS_LOGIN_LOGIN_DISPLAY_H_