ash/first_run/desktop_cleaner.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 "ash/first_run/desktop_cleaner.h"
   6
   7 #include "ash/shell.h"
   8 #include "ash/shell_window_ids.h"
   9 #include "ui/aura/window_event_dispatcher.h"
  10 #include "ui/aura/window_observer.h"
  11 #include "ui/compositor/layer_animation_observer.h"
  12 #include "ui/compositor/scoped_layer_animation_settings.h"
  13 #include "ui/message_center/message_center.h"
  14 #include "ui/message_center/notification_blocker.h"
  15
  16 namespace ash {
  17 namespace {
  18
  19 const int kContainerIdsToHide[] = {
  20   kShellWindowId_DefaultContainer,
  21   kShellWindowId_AlwaysOnTopContainer,
  22   kShellWindowId_PanelContainer,
  23   // TODO(dzhioev): uncomment this when issue with BrowserView::CanActivate
  24   // will be fixed.
  25   // kShellWindowId_SystemModalContainer
  26 };
  27
  28 }  // namespace
  29
  30 class ContainerHider : public aura::WindowObserver,
  31                        public ui::ImplicitAnimationObserver {
  32  public:
  33   explicit ContainerHider(aura::Window* container)
  34       : container_was_hidden_(!container->IsVisible()),
  35         container_(container) {
  36     if (container_was_hidden_)
  37       return;
  38     ui::Layer* layer = container_->layer();
  39     ui::ScopedLayerAnimationSettings animation_settings(layer->GetAnimator());
  40     animation_settings.AddObserver(this);
  41     layer->SetOpacity(0.0);
  42   }
  43
  44   ~ContainerHider() override {
  45     if (container_was_hidden_ || !container_)
  46       return;
  47     if (!WasAnimationCompletedForProperty(ui::LayerAnimationElement::OPACITY)) {
  48       // We are in the middle of animation.
  49       StopObservingImplicitAnimations();
  50     } else {
  51       container_->Show();
  52     }
  53     ui::Layer* layer = container_->layer();
  54     ui::ScopedLayerAnimationSettings animation_settings(layer->GetAnimator());
  55     layer->SetOpacity(1.0);
  56   }
  57
  58  private:
  59   // Overriden from ui::ImplicitAnimationObserver.
  60   void OnImplicitAnimationsCompleted() override { container_->Hide(); }
  61
  62   // Overriden from aura::WindowObserver.
  63   void OnWindowDestroying(aura::Window* window) override {
  64     DCHECK(window == container_);
  65     container_ = NULL;
  66   }
  67
  68   const bool container_was_hidden_;
  69   aura::Window* container_;
  70
  71   DISALLOW_COPY_AND_ASSIGN(ContainerHider);
  72 };
  73
  74 class NotificationBlocker : public message_center::NotificationBlocker {
  75  public:
  76   NotificationBlocker()
  77       : message_center::NotificationBlocker(
  78             message_center::MessageCenter::Get()) {
  79     NotifyBlockingStateChanged();
  80   }
  81
  82   ~NotificationBlocker() override {}
  83
  84  private:
  85   // Overriden from message_center::NotificationBlocker.
  86   bool ShouldShowNotificationAsPopup(
  87       const message_center::NotifierId& notifier_id) const override {
  88     return false;
  89   }
  90
  91   DISALLOW_COPY_AND_ASSIGN(NotificationBlocker);
  92 };
  93
  94 DesktopCleaner::DesktopCleaner() {
  95   // TODO(dzhioev): Add support for secondary displays.
  96   aura::Window* root_window = Shell::GetInstance()->GetPrimaryRootWindow();
  97   for (size_t i = 0; i < arraysize(kContainerIdsToHide); ++i) {
  98     aura::Window* container =
  99         Shell::GetContainer(root_window, kContainerIdsToHide[i]);
 100     container_hiders_.push_back(make_linked_ptr(new ContainerHider(container)));
 101   }
 102   notification_blocker_.reset(new NotificationBlocker());
 103 }
 104
 105 DesktopCleaner::~DesktopCleaner() {}
 106
 107 // static
 108 std::vector<int> DesktopCleaner::GetContainersToHideForTest() {
 109   return std::vector<int>(kContainerIdsToHide,
 110                           kContainerIdsToHide + arraysize(kContainerIdsToHide));
 111 }
 112
 113 }  // namespace ash
 114