chrome/browser/chromeos/login/user_adding_screen.cc

   1 // Copyright 2013 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/user_adding_screen.h"
   6
   7 #include "base/bind.h"
   8 #include "base/memory/singleton.h"
   9 #include "base/observer_list.h"
  10 #include "chrome/browser/chromeos/login/helper.h"
  11 #include "chrome/browser/chromeos/login/login_display_host_impl.h"
  12 #include "ui/gfx/rect.h"
  13 #include "ui/gfx/size.h"
  14
  15 namespace chromeos {
  16
  17 namespace {
  18
  19 class UserAddingScreenImpl : public UserAddingScreen {
  20  public:
  21   virtual void Start() OVERRIDE;
  22   virtual void Cancel() OVERRIDE;
  23   virtual bool IsRunning() OVERRIDE;
  24
  25   virtual void AddObserver(Observer* observer) OVERRIDE;
  26   virtual void RemoveObserver(Observer* observer) OVERRIDE;
  27
  28   static UserAddingScreenImpl* GetInstance();
  29  private:
  30   friend struct DefaultSingletonTraits<UserAddingScreenImpl>;
  31
  32   void OnDisplayHostCompletion();
  33
  34   UserAddingScreenImpl();
  35   virtual ~UserAddingScreenImpl();
  36
  37   ObserverList<Observer> observers_;
  38   LoginDisplayHost* display_host_;
  39 };
  40
  41 void UserAddingScreenImpl::Start() {
  42   CHECK(!IsRunning());
  43   gfx::Rect screen_bounds(chromeos::CalculateScreenBounds(gfx::Size()));
  44   display_host_ = new chromeos::LoginDisplayHostImpl(screen_bounds);
  45   display_host_->StartUserAdding(
  46       base::Bind(&UserAddingScreenImpl::OnDisplayHostCompletion,
  47                  base::Unretained(this)));
  48   FOR_EACH_OBSERVER(Observer, observers_, OnUserAddingStarted());
  49 }
  50
  51 void UserAddingScreenImpl::Cancel() {
  52   CHECK(IsRunning());
  53   display_host_->Finalize();
  54 }
  55
  56 bool UserAddingScreenImpl::IsRunning() {
  57   return display_host_ != NULL;
  58 }
  59
  60 void UserAddingScreenImpl::AddObserver(Observer* observer) {
  61   observers_.AddObserver(observer);
  62 }
  63
  64 void UserAddingScreenImpl::RemoveObserver(Observer* observer) {
  65   observers_.RemoveObserver(observer);
  66 }
  67
  68 void UserAddingScreenImpl::OnDisplayHostCompletion() {
  69   CHECK(IsRunning());
  70   display_host_ = NULL;
  71   FOR_EACH_OBSERVER(Observer, observers_, OnUserAddingFinished());
  72 }
  73
  74 // static
  75 UserAddingScreenImpl* UserAddingScreenImpl::GetInstance() {
  76   return Singleton<UserAddingScreenImpl>::get();
  77 }
  78
  79 UserAddingScreenImpl::UserAddingScreenImpl()
  80   : display_host_(NULL) {
  81 }
  82
  83 UserAddingScreenImpl::~UserAddingScreenImpl() {
  84 }
  85
  86 }  // anonymous namespace
  87
  88 UserAddingScreen::UserAddingScreen() {}
  89 UserAddingScreen::~UserAddingScreen() {}
  90
  91 UserAddingScreen* UserAddingScreen::Get() {
  92   return UserAddingScreenImpl::GetInstance();
  93 }
  94
  95 }  // namespace chromeos
  96