Chrome OS multi-profiles backend and UI.

chrome/browser/ui/webui/chromeos/login/oobe_ui.cc

 // 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.
 
 #include "chrome/browser/ui/webui/chromeos/login/oobe_ui.h"
 
 #include <string>
 
 #include "ash/ash_switches.h"
 #include "base/command_line.h"
@@ skipping 301 matching lines @@
 
   // If we're not doing boot animation then WebUI should trigger
   // wallpaper load on boot.
   if (CommandLine::ForCurrentProcess()->HasSwitch(
           switches::kDisableBootAnimation)) {
     localized_strings->SetString("bootIntoWallpaper", "on");
   } else {
     localized_strings->SetString("bootIntoWallpaper", "off");
   }
 
-  // OobeUI is used for OOBE/login and lock screen.
-  if (BaseLoginDisplayHost::default_host())
-    localized_strings->SetString("screenType", "login");
-  else
+  // TODO(nkostylev): Make sure that only one type of login UI
+  // is active at a time.
+  // OobeUI is used for these use cases:
+  // 1. Out-of-box / login
+  // 2. Lock screen.
+  // 3. Multi-profiles sign in (add user to current session).
+  if (BaseLoginDisplayHost::default_host()) {
+    if (!UserManager::Get()->IsUserLoggedIn())
+      localized_strings->SetString("screenType", "login");
+    else
+      localized_strings->SetString("screenType", "login-add-user");
+  } else {
     localized_strings->SetString("screenType", "lock");
+  }
 }
 
 void OobeUI::InitializeScreenMaps() {
   screen_names_.resize(SCREEN_UNKNOWN);
   screen_names_[SCREEN_OOBE_NETWORK] = kScreenOobeNetwork;
   screen_names_[SCREEN_OOBE_EULA] = kScreenOobeEula;
   screen_names_[SCREEN_OOBE_UPDATE] = kScreenOobeUpdate;
   screen_names_[SCREEN_OOBE_ENROLLMENT] = kScreenOobeEnrollment;
   screen_names_[SCREEN_GAIA_SIGNIN] = kScreenGaiaSignin;
   screen_names_[SCREEN_ACCOUNT_PICKER] = kScreenAccountPicker;
@@ skipping 51 matching lines @@
 void OobeUI::OnCurrentScreenChanged(const std::string& screen) {
   if (screen_ids_.count(screen)) {
     current_screen_ = screen_ids_[screen];
   } else {
     NOTREACHED() << "Screen should be registered in InitializeScreenMaps()";
     current_screen_ = SCREEN_UNKNOWN;
   }
 }
 
 }  // namespace chromeos