chromeos: Move files in //ash/common to //ash, part 2

ash/common/wm/overview/window_selector_item.cc

Index: ash/common/wm/overview/window_selector_item.cc
diff --git a/ash/common/wm/overview/window_selector_item.cc b/ash/common/wm/overview/window_selector_item.cc
deleted file mode 100644
index f6a7b947490f614b1499fee41ddd22ebea2d126c..0000000000000000000000000000000000000000
--- a/ash/common/wm/overview/window_selector_item.cc
+++ /dev/null
@@ -1,764 +0,0 @@
-// Copyright 2013 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 "ash/common/wm/overview/window_selector_item.h"
-
-#include <algorithm>
-#include <vector>
-
-#include "ash/common/material_design/material_design_controller.h"
-#include "ash/common/metrics/user_metrics_action.h"
-#include "ash/common/wm/overview/cleanup_animation_observer.h"
-#include "ash/common/wm/overview/overview_animation_type.h"
-#include "ash/common/wm/overview/scoped_overview_animation_settings.h"
-#include "ash/common/wm/overview/scoped_overview_animation_settings_factory.h"
-#include "ash/common/wm/overview/scoped_transform_overview_window.h"
-#include "ash/common/wm/overview/window_selector.h"
-#include "ash/common/wm/overview/window_selector_controller.h"
-#include "ash/common/wm/window_state.h"
-#include "ash/common/wm_shell.h"
-#include "ash/common/wm_window.h"
-#include "ash/public/cpp/shell_window_ids.h"
-#include "ash/resources/vector_icons/vector_icons.h"
-#include "ash/root_window_controller.h"
-#include "ash/strings/grit/ash_strings.h"
-#include "base/auto_reset.h"
-#include "base/strings/string_util.h"
-#include "base/strings/utf_string_conversions.h"
-#include "base/time/time.h"
-#include "ui/base/l10n/l10n_util.h"
-#include "ui/compositor/layer_animation_sequence.h"
-#include "ui/compositor/scoped_animation_duration_scale_mode.h"
-#include "ui/gfx/animation/slide_animation.h"
-#include "ui/gfx/canvas.h"
-#include "ui/gfx/color_utils.h"
-#include "ui/gfx/geometry/safe_integer_conversions.h"
-#include "ui/gfx/paint_vector_icon.h"
-#include "ui/gfx/transform_util.h"
-#include "ui/strings/grit/ui_strings.h"
-#include "ui/views/background.h"
-#include "ui/views/border.h"
-#include "ui/views/layout/box_layout.h"
-#include "ui/views/window/non_client_view.h"
-#include "ui/wm/core/shadow.h"
-#include "ui/wm/core/window_util.h"
-
-namespace ash {
-
-namespace {
-
-// In the conceptual overview table, the window margin is the space reserved
-// around the window within the cell. This margin does not overlap so the
-// closest distance between adjacent windows will be twice this amount.
-static const int kWindowMargin = 5;
-
-// Cover the transformed window including the gaps between the windows with a
-// transparent shield to block the input events from reaching the transformed
-// window while in overview.
-static const int kWindowSelectorMargin = kWindowMargin * 2;
-
-// Foreground label color.
-static const SkColor kLabelColor = SK_ColorWHITE;
-
-// TODO(tdanderson): Move this to a central location.
-static const SkColor kCloseButtonColor = SK_ColorWHITE;
-
-// Label background color once in overview mode.
-static const SkColor kLabelBackgroundColor = SkColorSetARGB(25, 255, 255, 255);
-
-// Label background color when exiting overview mode.
-static const SkColor kLabelExitColor = SkColorSetARGB(255, 90, 90, 90);
-
-// Corner radius for the selection tiles.
-static int kLabelBackgroundRadius = 2;
-
-// Horizontal padding for the label, on both sides.
-static const int kHorizontalLabelPadding = 8;
-
-// Height of an item header.
-static const int kHeaderHeight = 32;
-
-// Opacity for dimmed items.
-static const float kDimmedItemOpacity = 0.5f;
-
-// Opacity for fading out during closing a window.
-static const float kClosingItemOpacity = 0.8f;
-
-// Opacity for the item header.
-static const float kHeaderOpacity =
-    (SkColorGetA(kLabelBackgroundColor) / 255.f);
-
-// Duration it takes for the header to shift from opaque header color to
-// |kLabelBackgroundColor|.
-static const int kSelectorColorSlideMilliseconds = 240;
-
-// Duration of background opacity transition for the selected label.
-static const int kSelectorFadeInMilliseconds = 350;
-
-// Duration of background opacity transition when exiting overview mode.
-static const int kExitFadeInMilliseconds = 30;
-
-// Before closing a window animate both the window and the caption to shrink by
-// this fraction of size.
-static const float kPreCloseScale = 0.02f;
-
-// Convenience method to fade in a Window with predefined animation settings.
-// Note: The fade in animation will occur after a delay where the delay is how
-// long the lay out animations take.
-void SetupFadeInAfterLayout(views::Widget* widget) {
-  WmWindow* window = WmWindow::Get(widget->GetNativeWindow());
-  window->SetOpacity(0.0f);
-  std::unique_ptr<ScopedOverviewAnimationSettings>
-      scoped_overview_animation_settings =
-          ScopedOverviewAnimationSettingsFactory::Get()
-              ->CreateOverviewAnimationSettings(
-                  OverviewAnimationType::
-                      OVERVIEW_ANIMATION_ENTER_OVERVIEW_MODE_FADE_IN,
-                  window);
-  window->SetOpacity(1.0f);
-}
-
-// A Button that has a listener and listens to mouse clicks on the visible part
-// of an overview window.
-class ShieldButton : public views::CustomButton {
- public:
-  ShieldButton(views::ButtonListener* listener, const base::string16& name)
-      : views::CustomButton(listener) {
-    SetAccessibleName(name);
-  }
-  ~ShieldButton() override {}
-
-  // When WindowSelectorItem (which is a ButtonListener) is destroyed, its
-  // |item_widget_| is allowed to stay around to complete any animations.
-  // Resetting the listener in all views that are targeted by events is
-  // necessary to prevent a crash when a user clicks on the fading out widget
-  // after the WindowSelectorItem has been destroyed.
-  void ResetListener() { listener_ = nullptr; }
-
- protected:
-  // views::View:
-  const char* GetClassName() const override { return "ShieldButton"; }
-
- private:
-  DISALLOW_COPY_AND_ASSIGN(ShieldButton);
-};
-
-}  // namespace
-
-WindowSelectorItem::OverviewCloseButton::OverviewCloseButton(
-    views::ButtonListener* listener)
-    : views::ImageButton(listener) {
-  SetImage(views::CustomButton::STATE_NORMAL,
-           gfx::CreateVectorIcon(kWindowControlCloseIcon, kCloseButtonColor));
-  SetImageAlignment(views::ImageButton::ALIGN_CENTER,
-                    views::ImageButton::ALIGN_MIDDLE);
-  SetMinimumImageSize(gfx::Size(kHeaderHeight, kHeaderHeight));
-}
-
-WindowSelectorItem::OverviewCloseButton::~OverviewCloseButton() {}
-
-// A View having rounded top corners and a specified background color which is
-// only painted within the bounds defined by the rounded corners.
-// This class coordinates the transitions of the overview mode header when
-// entering the overview mode. Those animations are:
-// - Opacity animation. The header is initially same color as the original
-//   window's header. It starts as transparent and is faded in. When the full
-//   opacity is reached the original header is hidden (which is nearly
-//   imperceptable because this view obscures the original header) and a color
-//   animation starts.
-// - Color animation is used to change the color from the opaque color of the
-//   original window's header to semi-transparent color of the overview mode
-//   header (on entry to overview). It is also used on exit from overview to
-//   quickly change the color to a close opaque color in parallel with an
-//   opacity transition to mask the original header reappearing.
-class WindowSelectorItem::RoundedContainerView
-    : public views::View,
-      public gfx::AnimationDelegate,
-      public ui::LayerAnimationObserver {
- public:
-  RoundedContainerView(WindowSelectorItem* item,
-                       WmWindow* item_window,
-                       int corner_radius,
-                       SkColor background)
-      : item_(item),
-        item_window_(item_window),
-        corner_radius_(corner_radius),
-        initial_color_(background),
-        target_color_(background),
-        current_value_(0),
-        layer_(nullptr),
-        animation_(new gfx::SlideAnimation(this)) {
-    SetPaintToLayer();
-    layer()->SetFillsBoundsOpaquely(false);
-  }
-
-  ~RoundedContainerView() override { StopObservingLayerAnimations(); }
-
-  void OnItemRestored() {
-    item_ = nullptr;
-    item_window_ = nullptr;
-  }
-
-  // Starts observing layer animations so that actions can be taken when
-  // particular animations (opacity) complete. It should only be called once
-  // when the initial fade in animation is started.
-  void ObserveLayerAnimations(ui::Layer* layer) {
-    DCHECK(!layer_);
-    layer_ = layer;
-    layer_->GetAnimator()->AddObserver(this);
-  }
-
-  // Stops observing layer animations
-  void StopObservingLayerAnimations() {
-    if (!layer_)
-      return;
-    layer_->GetAnimator()->RemoveObserver(this);
-    layer_ = nullptr;
-  }
-
-  // Used by tests to set animation state.
-  gfx::SlideAnimation* animation() { return animation_.get(); }
-
-  void set_color(SkColor target_color) { target_color_ = target_color; }
-
-  // Starts a color animation using |tween_type|. The animation will change the
-  // color from |initial_color_| to |target_color_| over |duration| specified
-  // in milliseconds.
-  // This animation can start once the implicit layer fade-in opacity animation
-  // is completed. It is used to transition color from the opaque original
-  // window header color to |kLabelBackgroundColor| on entry into overview mode
-  // and from |kLabelBackgroundColor| back to the original window header color
-  // on exit from the overview mode.
-  void AnimateColor(gfx::Tween::Type tween_type, int duration) {
-    DCHECK(!layer_);  // layer animations should be completed.
-    animation_->SetSlideDuration(duration);
-    animation_->SetTweenType(tween_type);
-    animation_->Reset(0);
-    animation_->Show();
-
-    // Tests complete animations immediately. Emulate by invoking the callback.
-    if (ui::ScopedAnimationDurationScaleMode::duration_scale_mode() ==
-        ui::ScopedAnimationDurationScaleMode::ZERO_DURATION) {
-      AnimationEnded(animation_.get());
-    }
-  }
-
-  // Changes the view opacity by animating its background color. The animation
-  // will change the alpha value in |target_color_| from its current value to
-  // |opacity| * 255 but preserve the RGB values.
-  void AnimateBackgroundOpacity(float opacity) {
-    animation_->SetSlideDuration(kSelectorFadeInMilliseconds);
-    animation_->SetTweenType(gfx::Tween::EASE_OUT);
-    animation_->Reset(0);
-    animation_->Show();
-    target_color_ = SkColorSetA(target_color_, opacity * 255);
-  }
-
-  // views::View:
-  void OnPaint(gfx::Canvas* canvas) override {
-    views::View::OnPaint(canvas);
-    SkScalar radius = SkIntToScalar(corner_radius_);
-    const SkScalar kRadius[8] = {radius, radius, radius, radius, 0, 0, 0, 0};
-    SkPath path;
-    gfx::Rect bounds(size());
-    path.addRoundRect(gfx::RectToSkRect(bounds), kRadius);
-
-    cc::PaintFlags flags;
-    flags.setAntiAlias(true);
-    canvas->ClipPath(path, true);
-
-    SkColor target_color = initial_color_;
-    if (target_color_ != target_color) {
-      target_color = color_utils::AlphaBlend(target_color_, initial_color_,
-                                             current_value_);
-    }
-    canvas->DrawColor(target_color);
-  }
-
-  const char* GetClassName() const override { return "RoundedContainerView"; }
-
- private:
-  // gfx::AnimationDelegate:
-  void AnimationEnded(const gfx::Animation* animation) override {
-    initial_color_ = target_color_;
-    // Tabbed browser windows show the overview mode header behind the window
-    // during the initial animation. Once the initial fade-in completes and the
-    // overview header is fully exposed update stacking to keep the label above
-    // the item which prevents input events from reaching the window.
-    WmWindow* widget_window = WmWindow::Get(GetWidget()->GetNativeWindow());
-    if (widget_window && item_window_)
-      widget_window->GetParent()->StackChildAbove(widget_window, item_window_);
-    item_window_ = nullptr;
-  }
-
-  void AnimationProgressed(const gfx::Animation* animation) override {
-    current_value_ = animation_->CurrentValueBetween(0, 255);
-    SchedulePaint();
-  }
-
-  void AnimationCanceled(const gfx::Animation* animation) override {
-    item_window_ = nullptr;
-    initial_color_ = target_color_;
-    current_value_ = 255;
-    SchedulePaint();
-  }
-
-  // ui::LayerAnimationObserver:
-  void OnLayerAnimationEnded(ui::LayerAnimationSequence* sequence) override {
-    if (0 != (sequence->properties() &
-              ui::LayerAnimationElement::AnimatableProperty::OPACITY)) {
-      if (item_)
-        item_->HideHeader();
-      StopObservingLayerAnimations();
-      AnimateColor(gfx::Tween::EASE_IN, kSelectorColorSlideMilliseconds);
-    }
-  }
-
-  void OnLayerAnimationAborted(ui::LayerAnimationSequence* sequence) override {
-    if (0 != (sequence->properties() &
-              ui::LayerAnimationElement::AnimatableProperty::OPACITY)) {
-      StopObservingLayerAnimations();
-    }
-  }
-
-  void OnLayerAnimationScheduled(
-      ui::LayerAnimationSequence* sequence) override {}
-
-  WindowSelectorItem* item_;
-  WmWindow* item_window_;
-  int corner_radius_;
-  SkColor initial_color_;
-  SkColor target_color_;
-  int current_value_;
-  ui::Layer* layer_;
-  std::unique_ptr<gfx::SlideAnimation> animation_;
-
-  DISALLOW_COPY_AND_ASSIGN(RoundedContainerView);
-};
-
-// A Container View that has a ShieldButton to listen to events. The
-// ShieldButton covers most of the View except for the transparent gap between
-// the windows and is visually transparent. The ShieldButton owns a background
-// non-transparent view positioned at the ShieldButton top. The background view
-// in its turn owns an item text label and a close button.
-// The text label does not receive events, however the close button is higher in
-// Z-order than its parent and receives events forwarding them to the same
-// |listener| (i.e. WindowSelectorItem::ButtonPressed()).
-class WindowSelectorItem::CaptionContainerView : public views::View {
- public:
-  CaptionContainerView(ButtonListener* listener,
-                       views::Label* label,
-                       views::ImageButton* close_button,
-                       WindowSelectorItem::RoundedContainerView* background)
-      : listener_button_(new ShieldButton(listener, label->text())),
-        background_(background),
-        label_(label),
-        close_button_(close_button) {
-    background_->AddChildView(label_);
-    background_->AddChildView(close_button_);
-    listener_button_->AddChildView(background_);
-    AddChildView(listener_button_);
-  }
-
-  ShieldButton* listener_button() { return listener_button_; }
-
- protected:
-  // views::View:
-  void Layout() override {
-    // Position close button in the top right corner sized to its icon size and
-    // the label in the top left corner as tall as the button and extending to
-    // the button's left edge.
-    // The rest of this container view serves as a shield to prevent input
-    // events from reaching the transformed window in overview.
-    gfx::Rect bounds(GetLocalBounds());
-    bounds.Inset(kWindowSelectorMargin, kWindowSelectorMargin);
-    listener_button_->SetBoundsRect(bounds);
-
-    const int visible_height = close_button_->GetPreferredSize().height();
-    gfx::Rect background_bounds(gfx::Rect(bounds.size()));
-    background_bounds.set_height(visible_height);
-    background_->SetBoundsRect(background_bounds);
-
-    bounds = background_bounds;
-    bounds.Inset(kHorizontalLabelPadding, 0,
-                 kHorizontalLabelPadding + visible_height, 0);
-    label_->SetBoundsRect(bounds);
-
-    bounds = background_bounds;
-    bounds.set_x(bounds.width() - visible_height);
-    bounds.set_width(visible_height);
-    close_button_->SetBoundsRect(bounds);
-  }
-
-  const char* GetClassName() const override { return "CaptionContainerView"; }
-
- private:
-  ShieldButton* listener_button_;
-  WindowSelectorItem::RoundedContainerView* background_;
-  views::Label* label_;
-  views::ImageButton* close_button_;
-
-  DISALLOW_COPY_AND_ASSIGN(CaptionContainerView);
-};
-
-WindowSelectorItem::WindowSelectorItem(WmWindow* window,
-                                       WindowSelector* window_selector)
-    : dimmed_(false),
-      root_window_(window->GetRootWindow()),
-      transform_window_(window),
-      in_bounds_update_(false),
-      selected_(false),
-      caption_container_view_(nullptr),
-      label_view_(nullptr),
-      close_button_(new OverviewCloseButton(this)),
-      window_selector_(window_selector),
-      background_view_(nullptr) {
-  CreateWindowLabel(window->GetTitle());
-  GetWindow()->aura_window()->AddObserver(this);
-}
-
-WindowSelectorItem::~WindowSelectorItem() {
-  GetWindow()->aura_window()->RemoveObserver(this);
-}
-
-WmWindow* WindowSelectorItem::GetWindow() {
-  return transform_window_.window();
-}
-
-void WindowSelectorItem::RestoreWindow() {
-  caption_container_view_->listener_button()->ResetListener();
-  close_button_->ResetListener();
-  transform_window_.RestoreWindow();
-  if (background_view_) {
-    background_view_->OnItemRestored();
-    background_view_ = nullptr;
-  }
-  UpdateHeaderLayout(
-      HeaderFadeInMode::EXIT,
-      OverviewAnimationType::OVERVIEW_ANIMATION_LAY_OUT_SELECTOR_ITEMS);
-}
-
-void WindowSelectorItem::EnsureVisible() {
-  transform_window_.EnsureVisible();
-}
-
-void WindowSelectorItem::Shutdown() {
-  if (transform_window_.GetTopInset()) {
-    // Activating a window (even when it is the window that was active before
-    // overview) results in stacking it at the top. Maintain the label window
-    // stacking position above the item to make the header transformation more
-    // gradual upon exiting the overview mode.
-    WmWindow* widget_window = WmWindow::Get(item_widget_->GetNativeWindow());
-
-    // |widget_window| was originally created in the same container as the
-    // |transform_window_| but when closing overview the |transform_window_|
-    // could have been reparented if a drag was active. Only change stacking
-    // if the windows still belong to the same container.
-    if (widget_window->GetParent() == transform_window_.window()->GetParent()) {
-      widget_window->GetParent()->StackChildAbove(widget_window,
-                                                  transform_window_.window());
-    }
-  }
-  if (background_view_) {
-    background_view_->OnItemRestored();
-    background_view_ = nullptr;
-  }
-  FadeOut(std::move(item_widget_));
-}
-
-void WindowSelectorItem::PrepareForOverview() {
-  transform_window_.PrepareForOverview();
-  UpdateHeaderLayout(HeaderFadeInMode::ENTER,
-                     OverviewAnimationType::OVERVIEW_ANIMATION_NONE);
-}
-
-bool WindowSelectorItem::Contains(const WmWindow* target) const {
-  return transform_window_.Contains(target);
-}
-
-void WindowSelectorItem::SetBounds(const gfx::Rect& target_bounds,
-                                   OverviewAnimationType animation_type) {
-  if (in_bounds_update_)
-    return;
-  base::AutoReset<bool> auto_reset_in_bounds_update(&in_bounds_update_, true);
-  target_bounds_ = target_bounds;
-
-  gfx::Rect inset_bounds(target_bounds);
-  inset_bounds.Inset(kWindowMargin, kWindowMargin);
-  SetItemBounds(inset_bounds, animation_type);
-
-  // SetItemBounds is called before UpdateHeaderLayout so the header can
-  // properly use the updated windows bounds.
-  UpdateHeaderLayout(HeaderFadeInMode::UPDATE, animation_type);
-}
-
-void WindowSelectorItem::SetSelected(bool selected) {
-  selected_ = selected;
-  background_view_->AnimateBackgroundOpacity(selected ? 0.f : kHeaderOpacity);
-}
-
-void WindowSelectorItem::SendAccessibleSelectionEvent() {
-  caption_container_view_->listener_button()->NotifyAccessibilityEvent(
-      ui::AX_EVENT_SELECTION, true);
-}
-
-void WindowSelectorItem::CloseWindow() {
-  gfx::Rect inset_bounds(target_bounds_);
-  inset_bounds.Inset(target_bounds_.width() * kPreCloseScale,
-                     target_bounds_.height() * kPreCloseScale);
-  OverviewAnimationType animation_type =
-      OverviewAnimationType::OVERVIEW_ANIMATION_CLOSING_SELECTOR_ITEM;
-  // Scale down both the window and label.
-  SetBounds(inset_bounds, animation_type);
-  // First animate opacity to an intermediate value concurrently with the
-  // scaling animation.
-  AnimateOpacity(kClosingItemOpacity, animation_type);
-
-  // Fade out the window and the label, effectively hiding them.
-  AnimateOpacity(0.0,
-                 OverviewAnimationType::OVERVIEW_ANIMATION_CLOSE_SELECTOR_ITEM);
-  transform_window_.Close();
-}
-
-void WindowSelectorItem::HideHeader() {
-  transform_window_.HideHeader();
-}
-
-void WindowSelectorItem::OnMinimizedStateChanged() {
-  transform_window_.UpdateMirrorWindowForMinimizedState();
-}
-
-void WindowSelectorItem::SetDimmed(bool dimmed) {
-  dimmed_ = dimmed;
-  SetOpacity(dimmed ? kDimmedItemOpacity : 1.0f);
-}
-
-void WindowSelectorItem::ButtonPressed(views::Button* sender,
-                                       const ui::Event& event) {
-  if (sender == close_button_) {
-    WmShell::Get()->RecordUserMetricsAction(UMA_WINDOW_OVERVIEW_CLOSE_BUTTON);
-    CloseWindow();
-    return;
-  }
-  CHECK(sender == caption_container_view_->listener_button());
-  window_selector_->SelectWindow(this);
-}
-
-void WindowSelectorItem::OnWindowDestroying(aura::Window* window) {
-  window->RemoveObserver(this);
-  transform_window_.OnWindowDestroyed();
-}
-
-void WindowSelectorItem::OnWindowTitleChanged(aura::Window* window) {
-  // TODO(flackr): Maybe add the new title to a vector of titles so that we can
-  // filter any of the titles the window had while in the overview session.
-  label_view_->SetText(window->GetTitle());
-  UpdateAccessibilityName();
-}
-
-float WindowSelectorItem::GetItemScale(const gfx::Size& size) {
-  gfx::Size inset_size(size.width(), size.height() - 2 * kWindowMargin);
-  return ScopedTransformOverviewWindow::GetItemScale(
-      transform_window_.GetTargetBoundsInScreen().size(), inset_size,
-      transform_window_.GetTopInset(),
-      close_button_->GetPreferredSize().height());
-}
-
-gfx::Rect WindowSelectorItem::GetTargetBoundsInScreen() const {
-  return transform_window_.GetTargetBoundsInScreen();
-}
-
-void WindowSelectorItem::SetItemBounds(const gfx::Rect& target_bounds,
-                                       OverviewAnimationType animation_type) {
-  DCHECK(root_window_ == GetWindow()->GetRootWindow());
-  gfx::Rect screen_rect = transform_window_.GetTargetBoundsInScreen();
-
-  // Avoid division by zero by ensuring screen bounds is not empty.
-  gfx::Size screen_size(screen_rect.size());
-  screen_size.SetToMax(gfx::Size(1, 1));
-  screen_rect.set_size(screen_size);
-
-  const int top_view_inset = transform_window_.GetTopInset();
-  const int title_height = close_button_->GetPreferredSize().height();
-  gfx::Rect selector_item_bounds =
-      ScopedTransformOverviewWindow::ShrinkRectToFitPreservingAspectRatio(
-          screen_rect, target_bounds, top_view_inset, title_height);
-  gfx::Transform transform = ScopedTransformOverviewWindow::GetTransformForRect(
-      screen_rect, selector_item_bounds);
-  ScopedTransformOverviewWindow::ScopedAnimationSettings animation_settings;
-  transform_window_.BeginScopedAnimation(animation_type, &animation_settings);
-  transform_window_.SetTransform(root_window_, transform);
-}
-
-void WindowSelectorItem::SetOpacity(float opacity) {
-  item_widget_->SetOpacity(opacity);
-  if (background_view_) {
-    background_view_->AnimateBackgroundOpacity(
-        selected_ ? 0.f : kHeaderOpacity * opacity);
-  }
-  transform_window_.SetOpacity(opacity);
-}
-
-void WindowSelectorItem::CreateWindowLabel(const base::string16& title) {
-  background_view_ = new RoundedContainerView(this, transform_window_.window(),
-                                              kLabelBackgroundRadius,
-                                              transform_window_.GetTopColor());
-  // |background_view_| will get added as a child to CaptionContainerView.
-  views::Widget::InitParams params_label;
-  params_label.type = views::Widget::InitParams::TYPE_POPUP;
-  params_label.ownership = views::Widget::InitParams::WIDGET_OWNS_NATIVE_WIDGET;
-  params_label.opacity = views::Widget::InitParams::TRANSLUCENT_WINDOW;
-  params_label.visible_on_all_workspaces = true;
-  params_label.layer_type = ui::LAYER_NOT_DRAWN;
-  params_label.name = "OverviewModeLabel";
-  params_label.activatable =
-      views::Widget::InitParams::Activatable::ACTIVATABLE_DEFAULT;
-  params_label.accept_events = true;
-  item_widget_.reset(new views::Widget);
-  root_window_->GetRootWindowController()
-      ->ConfigureWidgetInitParamsForContainer(
-          item_widget_.get(),
-          transform_window_.window()->GetParent()->GetShellWindowId(),
-          &params_label);
-  item_widget_->set_focus_on_creation(false);
-  item_widget_->Init(params_label);
-  WmWindow* widget_window = WmWindow::Get(item_widget_->GetNativeWindow());
-  if (transform_window_.GetTopInset()) {
-    // For windows with headers the overview header fades in above the
-    // original window header.
-    widget_window->GetParent()->StackChildAbove(widget_window,
-                                                transform_window_.window());
-  } else {
-    // For tabbed windows the overview header slides from behind. The stacking
-    // is then corrected when the animation completes.
-    widget_window->GetParent()->StackChildBelow(widget_window,
-                                                transform_window_.window());
-  }
-  label_view_ = new views::Label(title);
-  label_view_->SetHorizontalAlignment(gfx::ALIGN_LEFT);
-  label_view_->SetAutoColorReadabilityEnabled(false);
-  label_view_->SetEnabledColor(kLabelColor);
-  // Tell the label what color it will be drawn onto. It will use whether the
-  // background color is opaque or transparent to decide whether to use
-  // subpixel rendering. Does not actually set the label's background color.
-  label_view_->SetBackgroundColor(kLabelBackgroundColor);
-
-  caption_container_view_ = new CaptionContainerView(
-      this, label_view_, close_button_, background_view_);
-  item_widget_->SetContentsView(caption_container_view_);
-  label_view_->SetVisible(false);
-  item_widget_->SetOpacity(0);
-  item_widget_->Show();
-  item_widget_->GetLayer()->SetMasksToBounds(false);
-}
-
-void WindowSelectorItem::UpdateHeaderLayout(
-    HeaderFadeInMode mode,
-    OverviewAnimationType animation_type) {
-  gfx::Rect transformed_window_bounds = root_window_->ConvertRectFromScreen(
-      transform_window_.GetTransformedBounds());
-
-  gfx::Rect label_rect(close_button_->GetPreferredSize());
-  label_rect.set_width(transformed_window_bounds.width());
-  // For tabbed windows the initial bounds of the caption are set such that it
-  // appears to be "growing" up from the window content area.
-  label_rect.set_y(
-      (mode != HeaderFadeInMode::ENTER || transform_window_.GetTopInset())
-          ? -label_rect.height()
-          : 0);
-  if (background_view_) {
-    if (mode == HeaderFadeInMode::ENTER) {
-      background_view_->ObserveLayerAnimations(item_widget_->GetLayer());
-      background_view_->set_color(kLabelBackgroundColor);
-      // The color will be animated only once the label widget is faded in.
-    } else if (mode == HeaderFadeInMode::EXIT) {
-      // Normally the observer is disconnected when the fade-in animations
-      // complete but some tests invoke animations with |NON_ZERO_DURATION|
-      // without waiting for completion so do it here.
-      background_view_->StopObservingLayerAnimations();
-      // Make the header visible above the window. It will be faded out when
-      // the Shutdown() is called.
-      background_view_->AnimateColor(gfx::Tween::EASE_OUT,
-                                     kExitFadeInMilliseconds);
-      background_view_->set_color(kLabelExitColor);
-    }
-  }
-  if (!label_view_->visible()) {
-    label_view_->SetVisible(true);
-    SetupFadeInAfterLayout(item_widget_.get());
-  }
-  WmWindow* widget_window = WmWindow::Get(item_widget_->GetNativeWindow());
-  std::unique_ptr<ScopedOverviewAnimationSettings> animation_settings =
-      ScopedOverviewAnimationSettingsFactory::Get()
-          ->CreateOverviewAnimationSettings(animation_type, widget_window);
-  // |widget_window| covers both the transformed window and the header
-  // as well as the gap between the windows to prevent events from reaching
-  // the window including its sizing borders.
-  if (mode != HeaderFadeInMode::ENTER) {
-    label_rect.set_height(close_button_->GetPreferredSize().height() +
-                          transformed_window_bounds.height());
-  }
-  label_rect.Inset(-kWindowSelectorMargin, -kWindowSelectorMargin);
-  widget_window->SetBounds(label_rect);
-  gfx::Transform label_transform;
-  label_transform.Translate(transformed_window_bounds.x(),
-                            transformed_window_bounds.y());
-  widget_window->SetTransform(label_transform);
-}
-
-void WindowSelectorItem::AnimateOpacity(float opacity,
-                                        OverviewAnimationType animation_type) {
-  DCHECK_GE(opacity, 0.f);
-  DCHECK_LE(opacity, 1.f);
-  ScopedTransformOverviewWindow::ScopedAnimationSettings animation_settings;
-  transform_window_.BeginScopedAnimation(animation_type, &animation_settings);
-  transform_window_.SetOpacity(opacity);
-
-  const float header_opacity = selected_ ? 0.f : kHeaderOpacity * opacity;
-  WmWindow* widget_window = WmWindow::Get(item_widget_->GetNativeWindow());
-  std::unique_ptr<ScopedOverviewAnimationSettings> animation_settings_label =
-      ScopedOverviewAnimationSettingsFactory::Get()
-          ->CreateOverviewAnimationSettings(animation_type, widget_window);
-  widget_window->SetOpacity(header_opacity);
-}
-
-void WindowSelectorItem::UpdateAccessibilityName() {
-  caption_container_view_->listener_button()->SetAccessibleName(
-      GetWindow()->GetTitle());
-}
-
-void WindowSelectorItem::FadeOut(std::unique_ptr<views::Widget> widget) {
-  widget->SetOpacity(1.f);
-
-  // Fade out the widget. This animation continues past the lifetime of |this|.
-  WmWindow* widget_window = WmWindow::Get(widget->GetNativeWindow());
-  std::unique_ptr<ScopedOverviewAnimationSettings> animation_settings =
-      ScopedOverviewAnimationSettingsFactory::Get()
-          ->CreateOverviewAnimationSettings(
-              OverviewAnimationType::
-                  OVERVIEW_ANIMATION_EXIT_OVERVIEW_MODE_FADE_OUT,
-              widget_window);
-  // CleanupAnimationObserver will delete itself (and the widget) when the
-  // opacity animation is complete.
-  // Ownership over the observer is passed to the window_selector_->delegate()
-  // which has longer lifetime so that animations can continue even after the
-  // overview mode is shut down.
-  views::Widget* widget_ptr = widget.get();
-  std::unique_ptr<CleanupAnimationObserver> observer(
-      new CleanupAnimationObserver(std::move(widget)));
-  animation_settings->AddObserver(observer.get());
-  window_selector_->delegate()->AddDelayedAnimationObserver(
-      std::move(observer));
-  widget_ptr->SetOpacity(0.f);
-}
-
-gfx::SlideAnimation* WindowSelectorItem::GetBackgroundViewAnimation() {
-  return background_view_ ? background_view_->animation() : nullptr;
-}
-
-WmWindow* WindowSelectorItem::GetOverviewWindowForMinimizedStateForTest() {
-  return transform_window_.GetOverviewWindowForMinimizedState();
-}
-
-}  // namespace ash