src/chrome/browser/chromeos/login/ui/user_adding_screen.cc

   1 // Copyright 2014 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 #include "chrome/browser/chromeos/login/ui/user_adding_screen.h"
   6
   7 #include "ash/shell.h"
   8 #include "ash/system/tray/system_tray.h"
   9 #include "base/bind.h"
  10 #include "base/memory/singleton.h"
  11 #include "base/observer_list.h"
  12 #include "chrome/browser/browser_process.h"
  13 #include "chrome/browser/chromeos/login/helper.h"
  14 #include "chrome/browser/chromeos/login/ui/login_display_host_impl.h"
  15 #include "chrome/browser/chromeos/login/users/wallpaper/wallpaper_manager.h"
  16 #include "components/session_manager/core/session_manager.h"
  17 #include "components/user_manager/user_manager.h"
  18 #include "ui/gfx/rect.h"
  19 #include "ui/gfx/size.h"
  20
  21 namespace chromeos {
  22
  23 namespace {
  24
  25 class UserAddingScreenImpl : public UserAddingScreen {
  26  public:
  27   virtual void Start() OVERRIDE;
  28   virtual void Cancel() OVERRIDE;
  29   virtual bool IsRunning() OVERRIDE;
  30
  31   virtual void AddObserver(Observer* observer) OVERRIDE;
  32   virtual void RemoveObserver(Observer* observer) OVERRIDE;
  33
  34   static UserAddingScreenImpl* GetInstance();
  35  private:
  36   friend struct DefaultSingletonTraits<UserAddingScreenImpl>;
  37
  38   void OnDisplayHostCompletion();
  39
  40   UserAddingScreenImpl();
  41   virtual ~UserAddingScreenImpl();
  42
  43   ObserverList<Observer> observers_;
  44   LoginDisplayHost* display_host_;
  45 };
  46
  47 void UserAddingScreenImpl::Start() {
  48   CHECK(!IsRunning());
  49   gfx::Rect screen_bounds(chromeos::CalculateScreenBounds(gfx::Size()));
  50   display_host_ = new chromeos::LoginDisplayHostImpl(screen_bounds);
  51   display_host_->StartUserAdding(
  52       base::Bind(&UserAddingScreenImpl::OnDisplayHostCompletion,
  53                  base::Unretained(this)));
  54
  55   g_browser_process->platform_part()->SessionManager()->SetSessionState(
  56       session_manager::SESSION_STATE_LOGIN_SECONDARY);
  57   FOR_EACH_OBSERVER(Observer, observers_, OnUserAddingStarted());
  58 }
  59
  60 void UserAddingScreenImpl::Cancel() {
  61   CHECK(IsRunning());
  62
  63   // Make sure that system tray is enabled after this flow.
  64   ash::Shell::GetInstance()->GetPrimarySystemTray()->SetEnabled(true);
  65   display_host_->Finalize();
  66
  67   // Reset wallpaper if cancel adding user from multiple user sign in page.
  68   if (user_manager::UserManager::Get()->IsUserLoggedIn()) {
  69     WallpaperManager::Get()->SetUserWallpaperDelayed(
  70         user_manager::UserManager::Get()->GetActiveUser()->email());
  71   }
  72 }
  73
  74 bool UserAddingScreenImpl::IsRunning() {
  75   return display_host_ != NULL;
  76 }
  77
  78 void UserAddingScreenImpl::AddObserver(Observer* observer) {
  79   observers_.AddObserver(observer);
  80 }
  81
  82 void UserAddingScreenImpl::RemoveObserver(Observer* observer) {
  83   observers_.RemoveObserver(observer);
  84 }
  85
  86 void UserAddingScreenImpl::OnDisplayHostCompletion() {
  87   CHECK(IsRunning());
  88   display_host_ = NULL;
  89
  90   g_browser_process->platform_part()->SessionManager()->SetSessionState(
  91       session_manager::SESSION_STATE_ACTIVE);
  92   FOR_EACH_OBSERVER(Observer, observers_, OnUserAddingFinished());
  93 }
  94
  95 // static
  96 UserAddingScreenImpl* UserAddingScreenImpl::GetInstance() {
  97   return Singleton<UserAddingScreenImpl>::get();
  98 }
  99
 100 UserAddingScreenImpl::UserAddingScreenImpl()
 101   : display_host_(NULL) {
 102 }
 103
 104 UserAddingScreenImpl::~UserAddingScreenImpl() {
 105 }
 106
 107 }  // anonymous namespace
 108
 109 UserAddingScreen::UserAddingScreen() {}
 110 UserAddingScreen::~UserAddingScreen() {}
 111
 112 UserAddingScreen* UserAddingScreen::Get() {
 113   return UserAddingScreenImpl::GetInstance();
 114 }
 115
 116 }  // namespace chromeos
 117