Converts overview to use common ash types

ash/wm/overview/scoped_transform_overview_window.cc

 // 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/wm/overview/scoped_transform_overview_window.h"
 
 #include <algorithm>
 #include <vector>
 
-#include "ash/screen_util.h"
-#include "ash/shell_window_ids.h"
 #include "ash/wm/common/window_state.h"
+#include "ash/wm/common/wm_window.h"
 #include "ash/wm/overview/scoped_overview_animation_settings.h"
+#include "ash/wm/overview/scoped_overview_animation_settings_factory.h"
 #include "ash/wm/overview/window_selector_item.h"
-#include "ash/wm/window_state_aura.h"
-#include "ash/wm/window_util.h"
 #include "base/macros.h"
-#include "ui/aura/client/aura_constants.h"
-#include "ui/aura/client/screen_position_client.h"
-#include "ui/aura/window.h"
-#include "ui/compositor/scoped_layer_animation_settings.h"
-#include "ui/gfx/animation/tween.h"
+#include "ui/gfx/geometry/rect.h"
 #include "ui/gfx/transform_util.h"
-#include "ui/views/widget/widget.h"
-#include "ui/wm/core/window_animations.h"
-#include "ui/wm/core/window_util.h"
+
+using WmWindows = std::vector<ash::wm::WmWindow*>;
 
 namespace ash {
 
 namespace {
 
 // The opacity level that windows will be set to when they are restored.
 const float kRestoreWindowOpacity = 1.0f;
 
-aura::Window* GetTransientRoot(aura::Window* window) {
-  while (::wm::GetTransientParent(window))
-    window = ::wm::GetTransientParent(window);
+wm::WmWindow* GetTransientRoot(wm::WmWindow* window) {
+  while (window->GetTransientParent())
+    window = window->GetTransientParent();
   return window;
 }
 
-// An iterator class that traverses an aura::Window and all of it's transient
+std::unique_ptr<ScopedOverviewAnimationSettings>
+CreateScopedOverviewAnimationSettings(OverviewAnimationType animation_type,
+                                      wm::WmWindow* window) {
+  return ScopedOverviewAnimationSettingsFactory::Get()
+      ->CreateOverviewAnimationSettings(animation_type, window);
+}
+
+// An iterator class that traverses an wm::WmWindow and all of it's transient

[James Cook, 2016/05/27 00:02:51]

super-nit: "an" -> "a" and "it's" -> "its"

[sky, 2016/05/27 03:18:03]

Done.

 // descendants.
 class TransientDescendantIterator {
  public:
   // Creates an empty iterator.
   TransientDescendantIterator();
 
   // Copy constructor required for iterator purposes.
   TransientDescendantIterator(
       const TransientDescendantIterator& other) = default;
 
   // Iterates over |root_window| and all of its transient descendants.
   // Note |root_window| must not have a transient parent.
-  explicit TransientDescendantIterator(aura::Window* root_window);
+  explicit TransientDescendantIterator(wm::WmWindow* root_window);
 
   // Prefix increment operator.  This assumes there are more items (i.e.
   // *this != TransientDescendantIterator()).
   const TransientDescendantIterator& operator++();
 
   // Comparison for STL-based loops.
   bool operator!=(const TransientDescendantIterator& other) const;
 
   // Dereference operator for STL-compatible iterators.
-  aura::Window* operator*() const;
+  wm::WmWindow* operator*() const;
 
  private:
-  // The current window that |this| refers to. A NULL |current_window_| denotes
-  // an empty iterator and is used as the last possible value in the traversal.
-  aura::Window* current_window_;
-
   // Explicit assignment operator defined because an explicit copy constructor
   // is needed and therefore the DISALLOW_COPY_AND_ASSIGN macro cannot be used.
   TransientDescendantIterator& operator=(
       const TransientDescendantIterator& other) = default;
+
+  // The current window that |this| refers to. A null |current_window_| denotes
+  // an empty iterator and is used as the last possible value in the traversal.
+  wm::WmWindow* current_window_;
 };
 
 // Provides a virtual container implementing begin() and end() for a sequence of
 // TransientDescendantIterators. This can be used in range-based for loops.
 class TransientDescendantIteratorRange {
  public:
   explicit TransientDescendantIteratorRange(
       const TransientDescendantIterator& begin);
 
   // Copy constructor required for iterator purposes.
   TransientDescendantIteratorRange(
       const TransientDescendantIteratorRange& other) = default;
 
   const TransientDescendantIterator& begin() const { return begin_; }
   const TransientDescendantIterator& end() const { return end_; }
 
  private:
-  TransientDescendantIterator begin_;
-  TransientDescendantIterator end_;
-
   // Explicit assignment operator defined because an explicit copy constructor
   // is needed and therefore the DISALLOW_COPY_AND_ASSIGN macro cannot be used.
   TransientDescendantIteratorRange& operator=(
       const TransientDescendantIteratorRange& other) = default;
+
+  TransientDescendantIterator begin_;
+  TransientDescendantIterator end_;
 };
 
 TransientDescendantIterator::TransientDescendantIterator()
   : current_window_(nullptr) {
 }
 
 TransientDescendantIterator::TransientDescendantIterator(
-    aura::Window* root_window)
+    wm::WmWindow* root_window)
     : current_window_(root_window) {
-  DCHECK(!::wm::GetTransientParent(root_window));
+  DCHECK(!root_window->GetTransientParent());
 }
 
 // Performs a pre-order traversal of the transient descendants.
 const TransientDescendantIterator&
 TransientDescendantIterator::operator++() {
   DCHECK(current_window_);
 
-  const aura::Window::Windows& transient_children =
-      ::wm::GetTransientChildren(current_window_);
+  const WmWindows transient_children = current_window_->GetTransientChildren();
 
-  if (transient_children.size() > 0) {
+  if (!transient_children.empty()) {
     current_window_ = transient_children.front();
   } else {
     while (current_window_) {
-      aura::Window* parent = ::wm::GetTransientParent(current_window_);
+      wm::WmWindow* parent = current_window_->GetTransientParent();
       if (!parent) {
         current_window_ = nullptr;
         break;
       }
-      const aura::Window::Windows& transient_siblings =
-          ::wm::GetTransientChildren(parent);
-      aura::Window::Windows::const_iterator iter = std::find(
-          transient_siblings.begin(),
-          transient_siblings.end(),
-          current_window_);
+      const WmWindows transient_siblings = parent->GetTransientChildren();
+      auto iter = std::find(transient_siblings.begin(),
+                            transient_siblings.end(), current_window_);
       ++iter;
       if (iter != transient_siblings.end()) {
         current_window_ = *iter;
         break;
       }
-      current_window_ = ::wm::GetTransientParent(current_window_);
+      current_window_ = current_window_->GetTransientParent();
     }
   }
   return *this;
 }
 
 bool TransientDescendantIterator::operator!=(
     const TransientDescendantIterator& other) const {
   return current_window_ != other.current_window_;
 }
 
-aura::Window* TransientDescendantIterator::operator*() const {
+wm::WmWindow* TransientDescendantIterator::operator*() const {
   return current_window_;
 }
 
 TransientDescendantIteratorRange::TransientDescendantIteratorRange(
     const TransientDescendantIterator& begin)
     : begin_(begin) {
 }
 
 TransientDescendantIteratorRange GetTransientTreeIterator(
-    aura::Window* window) {
+    wm::WmWindow* window) {
   return TransientDescendantIteratorRange(
       TransientDescendantIterator(GetTransientRoot(window)));
 }
 
 }  // namespace
 
 ScopedTransformOverviewWindow::ScopedTransformOverviewWindow(
-        aura::Window* window)
+    wm::WmWindow* window)
     : window_(window),
-      minimized_(window->GetProperty(aura::client::kShowStateKey) ==
-                 ui::SHOW_STATE_MINIMIZED),
-      ignored_by_shelf_(wm::GetWindowState(window)->ignored_by_shelf()),
+      minimized_(window->GetShowState() == ui::SHOW_STATE_MINIMIZED),
+      ignored_by_shelf_(window->GetWindowState()->ignored_by_shelf()),
       overview_started_(false),
-      original_transform_(window->layer()->GetTargetTransform()),
-      original_opacity_(window->layer()->GetTargetOpacity()) {
-  DCHECK(window_);
-}
+      original_transform_(window->GetTargetTransform()),
+      original_opacity_(window->GetTargetOpacity()) {}
 
 ScopedTransformOverviewWindow::~ScopedTransformOverviewWindow() {
 }
 
 void ScopedTransformOverviewWindow::RestoreWindow() {
   ScopedAnimationSettings animation_settings_list;
   BeginScopedAnimation(
       OverviewAnimationType::OVERVIEW_ANIMATION_RESTORE_WINDOW,
       &animation_settings_list);
   SetTransform(window()->GetRootWindow(), original_transform_);
 
-  ScopedOverviewAnimationSettings animation_settings(
-      OverviewAnimationType::OVERVIEW_ANIMATION_LAY_OUT_SELECTOR_ITEMS,
-      window_);
+  std::unique_ptr<ScopedOverviewAnimationSettings> animation_settings =
+      CreateScopedOverviewAnimationSettings(
+          OverviewAnimationType::OVERVIEW_ANIMATION_LAY_OUT_SELECTOR_ITEMS,
+          window_);
   gfx::Transform transform;
-  if (minimized_ && window_->GetProperty(aura::client::kShowStateKey) !=
-      ui::SHOW_STATE_MINIMIZED) {
+  if (minimized_ && window_->GetShowState() != ui::SHOW_STATE_MINIMIZED) {
     // Setting opacity 0 and visible false ensures that the property change
     // to SHOW_STATE_MINIMIZED will not animate the window from its original
     // bounds to the minimized position.
     // Hiding the window needs to be done before the target opacity is 0,
     // otherwise the layer's visibility will not be updated
     // (See VisibilityController::UpdateLayerVisibility).
     window_->Hide();
-    window_->layer()->SetOpacity(0);
-    window_->SetProperty(aura::client::kShowStateKey, ui::SHOW_STATE_MINIMIZED);
+    window_->SetOpacity(0);
+    window_->SetShowState(ui::SHOW_STATE_MINIMIZED);
   }
-  wm::GetWindowState(window_)->set_ignored_by_shelf(ignored_by_shelf_);
+  window_->GetWindowState()->set_ignored_by_shelf(ignored_by_shelf_);
   SetOpacity(original_opacity_);
 }
 
 void ScopedTransformOverviewWindow::BeginScopedAnimation(
     OverviewAnimationType animation_type,
     ScopedAnimationSettings* animation_settings) {
   for (const auto& window : GetTransientTreeIterator(window_)) {
     animation_settings->push_back(
-        new ScopedOverviewAnimationSettings(animation_type, window));
+        CreateScopedOverviewAnimationSettings(animation_type, window));
   }
 }
 
-bool ScopedTransformOverviewWindow::Contains(const aura::Window* target) const {
+bool ScopedTransformOverviewWindow::Contains(const wm::WmWindow* target) const {
   for (const auto& window : GetTransientTreeIterator(window_)) {
     if (window->Contains(target))
       return true;
   }
   return false;
 }
 
 gfx::Rect ScopedTransformOverviewWindow::GetTargetBoundsInScreen() const {
   gfx::Rect bounds;
   for (const auto& window : GetTransientTreeIterator(window_)) {
     // Ignore other window types when computing bounding box of window
     // selector target item.
-    if (window != window_ && window->type() != ui::wm::WINDOW_TYPE_NORMAL &&
-        window->type() != ui::wm::WINDOW_TYPE_PANEL) {
+    if (window != window_ && window->GetType() != ui::wm::WINDOW_TYPE_NORMAL &&
+        window->GetType() != ui::wm::WINDOW_TYPE_PANEL) {
       continue;
     }
-    bounds.Union(ScreenUtil::ConvertRectToScreen(window->parent(),
-                                                 window->GetTargetBounds()));
+    bounds.Union(
+        window->GetParent()->ConvertRectToScreen(window->GetTargetBounds()));
   }
   return bounds;
 }
 
 void ScopedTransformOverviewWindow::ShowWindowIfMinimized() {
-  if (minimized_ && window_->GetProperty(aura::client::kShowStateKey) ==
-      ui::SHOW_STATE_MINIMIZED) {
+  if (minimized_ && window_->GetShowState() == ui::SHOW_STATE_MINIMIZED)
     window_->Show();
-  }
 }
 
 void ScopedTransformOverviewWindow::ShowWindowOnExit() {
   if (minimized_) {
     minimized_ = false;
     original_transform_ = gfx::Transform();
     original_opacity_ = kRestoreWindowOpacity;
   }
 }
 
@@ skipping 27 matching lines @@
   DCHECK(!src_rect.IsEmpty());
   gfx::Transform transform;
   transform.Translate(dst_rect.x() - src_rect.x(),
                       dst_rect.y() - src_rect.y());
   transform.Scale(static_cast<float>(dst_rect.width()) / src_rect.width(),
                   static_cast<float>(dst_rect.height()) / src_rect.height());
   return transform;
 }
 
 void ScopedTransformOverviewWindow::SetTransform(
-    aura::Window* root_window,
+    wm::WmWindow* root_window,
     const gfx::Transform& transform) {
   DCHECK(overview_started_);
 
   gfx::Point target_origin(GetTargetBoundsInScreen().origin());
 
   for (const auto& window : GetTransientTreeIterator(window_)) {
-    aura::Window* parent_window = window->parent();
-    gfx::Point original_origin = ScreenUtil::ConvertRectToScreen(
-        parent_window, window->GetTargetBounds()).origin();
+    wm::WmWindow* parent_window = window->GetParent();
+    gfx::Point original_origin =
+        parent_window->ConvertRectToScreen(window->GetTargetBounds()).origin();
     gfx::Transform new_transform = TransformAboutPivot(
         gfx::Point(target_origin.x() - original_origin.x(),
                    target_origin.y() - original_origin.y()),
         transform);
     window->SetTransform(new_transform);
   }
 }
 
 void ScopedTransformOverviewWindow::SetOpacity(float opacity) {
   for (const auto& window : GetTransientTreeIterator(window_)) {
-    window->layer()->SetOpacity(opacity);
+    window->SetOpacity(opacity);
   }
 }
 
 void ScopedTransformOverviewWindow::Close() {
-  aura::Window* window = GetTransientRoot(window_);
-  views::Widget::GetWidgetForNativeView(window)->Close();
+  GetTransientRoot(window_)->Close();
 }
 
 void ScopedTransformOverviewWindow::PrepareForOverview() {
   DCHECK(!overview_started_);
   overview_started_ = true;
-  wm::GetWindowState(window_)->set_ignored_by_shelf(true);
+  window_->GetWindowState()->set_ignored_by_shelf(true);
   ShowWindowIfMinimized();
 }
 
 }  // namespace ash