Duplicate -Move DevTools out of ash and turn it to a component.

components/ui_devtools/devtools/ui_devtools_dom_agent.cc

 // Copyright 2016 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/devtools/ash_devtools_dom_agent.h"
+#include "components/ui_devtools/devtools/ui_devtools_dom_agent.h"
 
-#include "ash/devtools/ui_element.h"
-#include "ash/devtools/view_element.h"
-#include "ash/devtools/widget_element.h"
-#include "ash/devtools/window_element.h"
 #include "ash/public/cpp/shell_window_ids.h"
+
+#include "components/ui_devtools/devtools/ui_element.h"
+#include "components/ui_devtools/devtools/view_element.h"
+#include "components/ui_devtools/devtools/widget_element.h"
+#include "components/ui_devtools/devtools/window_element.h"
 #include "components/ui_devtools/devtools_server.h"
 #include "third_party/skia/include/core/SkColor.h"
 #include "ui/aura/env.h"
 #include "ui/aura/window.h"
 #include "ui/aura/window_tree_host.h"
 #include "ui/display/display.h"
 #include "ui/display/screen.h"
 #include "ui/views/background.h"
 #include "ui/views/border.h"
 #include "ui/views/view.h"
 #include "ui/views/widget/widget.h"
 #include "ui/wm/core/window_util.h"
 
-namespace ash {
+namespace ui {
 namespace devtools {
 namespace {
-
 using namespace ui::devtools::protocol;
 // TODO(mhashmi): Make ids reusable
 
 std::unique_ptr<DOM::Node> BuildNode(
     const std::string& name,
     std::unique_ptr<Array<std::string>> attributes,
     std::unique_ptr<Array<DOM::Node>> children,
     int node_ids) {
   constexpr int kDomElementNodeType = 1;
   std::unique_ptr<DOM::Node> node = DOM::Node::create()
@@ skipping 70 matching lines @@
                                         .setNodeType(kDomElementNodeType)
                                         .setAttributes(GetAttributes(root))
                                         .build();
   node->setChildNodeCount(children->length());
   node->setChildren(std::move(children));
   return node;
 }
 
 }  // namespace
 
-AshDevToolsDOMAgent::AshDevToolsDOMAgent() : is_building_tree_(false) {
+UIDevToolsDOMAgent::UIDevToolsDOMAgent() : is_building_tree_(false) {
   aura::Env::GetInstance()->AddObserver(this);
 }
 
-AshDevToolsDOMAgent::~AshDevToolsDOMAgent() {
+UIDevToolsDOMAgent::~UIDevToolsDOMAgent() {
   aura::Env::GetInstance()->RemoveObserver(this);
   Reset();
 }
 
-ui::devtools::protocol::Response AshDevToolsDOMAgent::disable() {
+ui::devtools::protocol::Response UIDevToolsDOMAgent::disable() {
   Reset();
   return ui::devtools::protocol::Response::OK();
 }
 
-ui::devtools::protocol::Response AshDevToolsDOMAgent::getDocument(
+ui::devtools::protocol::Response UIDevToolsDOMAgent::getDocument(
     std::unique_ptr<ui::devtools::protocol::DOM::Node>* out_root) {
   *out_root = BuildInitialTree();
   return ui::devtools::protocol::Response::OK();
 }
 
-ui::devtools::protocol::Response AshDevToolsDOMAgent::highlightNode(
+ui::devtools::protocol::Response UIDevToolsDOMAgent::highlightNode(
     std::unique_ptr<ui::devtools::protocol::DOM::HighlightConfig>
         highlight_config,
     ui::devtools::protocol::Maybe<int> node_id) {
   return HighlightNode(std::move(highlight_config), node_id.fromJust());
 }
 
-ui::devtools::protocol::Response AshDevToolsDOMAgent::hideHighlight() {
+ui::devtools::protocol::Response UIDevToolsDOMAgent::hideHighlight() {
   if (widget_for_highlighting_ && widget_for_highlighting_->IsVisible())
     widget_for_highlighting_->Hide();
   return ui::devtools::protocol::Response::OK();
 }
 
-void AshDevToolsDOMAgent::OnUIElementAdded(UIElement* parent,
-                                           UIElement* child) {
+void UIDevToolsDOMAgent::OnUIElementAdded(UIElement* parent, UIElement* child) {
   if (!parent) {
     node_id_to_ui_element_[child->node_id()] = child;
     return;
   }
   // If tree is being built, don't add child to dom tree again.
   if (is_building_tree_)
     return;
   DCHECK(node_id_to_ui_element_.count(parent->node_id()));
 
   const auto& children = parent->children();
   auto iter = std::find(children.begin(), children.end(), child);
   int prev_node_id =
       (iter == children.end() - 1) ? 0 : (*std::next(iter))->node_id();
   frontend()->childNodeInserted(parent->node_id(), prev_node_id,
                                 BuildTreeForUIElement(child));
 }
 
-void AshDevToolsDOMAgent::OnUIElementReordered(UIElement* parent,
-                                               UIElement* child) {
+void UIDevToolsDOMAgent::OnUIElementReordered(UIElement* parent,
+                                              UIElement* child) {
+  if (child->type() == UIElementType::WINDOW &&
+      IsHighlightingWindow(
+          UIElement::GetBackingElement<aura::Window, WindowElement>(child)))
+    return;
   DCHECK(node_id_to_ui_element_.count(parent->node_id()));
 
   const auto& children = parent->children();
   auto iter = std::find(children.begin(), children.end(), child);
   int prev_node_id =
       (iter == children.begin()) ? 0 : (*std::prev(iter))->node_id();
   RemoveDomNode(child);
   frontend()->childNodeInserted(parent->node_id(), prev_node_id,
                                 BuildDomNodeFromUIElement(child));
 }
 
-void AshDevToolsDOMAgent::OnUIElementRemoved(UIElement* ui_element) {
+void UIDevToolsDOMAgent::OnUIElementRemoved(UIElement* ui_element) {
   DCHECK(node_id_to_ui_element_.count(ui_element->node_id()));
 
   RemoveDomNode(ui_element);
   node_id_to_ui_element_.erase(ui_element->node_id());
 }
 
-void AshDevToolsDOMAgent::OnUIElementBoundsChanged(UIElement* ui_element) {
+void UIDevToolsDOMAgent::OnUIElementBoundsChanged(UIElement* ui_element) {
   for (auto& observer : observers_)
     observer.OnNodeBoundsChanged(ui_element->node_id());
 }
 
-bool AshDevToolsDOMAgent::IsHighlightingWindow(aura::Window* window) {
+bool UIDevToolsDOMAgent::IsHighlightingWindow(aura::Window* window) {
   return widget_for_highlighting_ &&
          GetWidgetFromWindow(window) == widget_for_highlighting_.get();
 }
 
-void AshDevToolsDOMAgent::AddObserver(AshDevToolsDOMAgentObserver* observer) {
+void UIDevToolsDOMAgent::AddObserver(UIDevToolsDOMAgentObserver* observer) {
   observers_.AddObserver(observer);
 }
 
-void AshDevToolsDOMAgent::RemoveObserver(
-    AshDevToolsDOMAgentObserver* observer) {
+void UIDevToolsDOMAgent::RemoveObserver(UIDevToolsDOMAgentObserver* observer) {
   observers_.RemoveObserver(observer);
 }
 
-UIElement* AshDevToolsDOMAgent::GetElementFromNodeId(int node_id) {
+UIElement* UIDevToolsDOMAgent::GetElementFromNodeId(int node_id) {
   return node_id_to_ui_element_[node_id];
 }
 
-void AshDevToolsDOMAgent::OnHostInitialized(aura::WindowTreeHost* host) {
+void UIDevToolsDOMAgent::OnHostInitialized(aura::WindowTreeHost* host) {
   root_windows_.push_back(host->window());
 }
 
-void AshDevToolsDOMAgent::OnNodeBoundsChanged(int node_id) {
+void UIDevToolsDOMAgent::OnNodeBoundsChanged(int node_id) {
   for (auto& observer : observers_)
     observer.OnNodeBoundsChanged(node_id);
 }
 
 std::unique_ptr<ui::devtools::protocol::DOM::Node>
-AshDevToolsDOMAgent::BuildInitialTree() {
+UIDevToolsDOMAgent::BuildInitialTree() {
   is_building_tree_ = true;
   std::unique_ptr<Array<DOM::Node>> children = Array<DOM::Node>::create();
 
   // TODO(thanhph): Root of UIElement tree shoudn't be WindowElement
   // but maybe a new different type.
   window_element_root_ = new WindowElement(nullptr, this, nullptr);
 
   for (aura::Window* window : root_windows()) {
     UIElement* window_element =
         new WindowElement(window, this, window_element_root_);
 
     children->addItem(BuildTreeForUIElement(window_element));
     window_element_root_->AddChild(window_element);
   }
   std::unique_ptr<ui::devtools::protocol::DOM::Node> root_node = BuildNode(
       "root", nullptr, std::move(children), window_element_root_->node_id());
   is_building_tree_ = false;
   return root_node;
 }
 
 std::unique_ptr<ui::devtools::protocol::DOM::Node>
-AshDevToolsDOMAgent::BuildTreeForUIElement(UIElement* ui_element) {
+UIDevToolsDOMAgent::BuildTreeForUIElement(UIElement* ui_element) {
   if (ui_element->type() == UIElementType::WINDOW) {
     return BuildTreeForWindow(
         ui_element,
         UIElement::GetBackingElement<aura::Window, WindowElement>(ui_element));
   } else if (ui_element->type() == UIElementType::WIDGET) {
     return BuildTreeForRootWidget(
         ui_element,
         UIElement::GetBackingElement<views::Widget, WidgetElement>(ui_element));
   } else if (ui_element->type() == UIElementType::VIEW) {
     return BuildTreeForView(
         ui_element,
         UIElement::GetBackingElement<views::View, ViewElement>(ui_element));
   }
   return nullptr;
 }
 
-std::unique_ptr<DOM::Node> AshDevToolsDOMAgent::BuildTreeForWindow(
+std::unique_ptr<DOM::Node> UIDevToolsDOMAgent::BuildTreeForWindow(
     UIElement* window_element_root,
     aura::Window* window) {
   std::unique_ptr<Array<DOM::Node>> children = Array<DOM::Node>::create();
   views::Widget* widget = GetWidgetFromWindow(window);
   if (widget) {
     UIElement* widget_element =
         new WidgetElement(widget, this, window_element_root);
 
     children->addItem(BuildTreeForRootWidget(widget_element, widget));
     window_element_root->AddChild(widget_element);
   }
   for (aura::Window* child : window->children()) {
     UIElement* window_element =
         new WindowElement(child, this, window_element_root);
 
     children->addItem(BuildTreeForWindow(window_element, child));
     window_element_root->AddChild(window_element);
   }
   std::unique_ptr<ui::devtools::protocol::DOM::Node> node =
       BuildNode("Window", GetAttributes(window_element_root),
                 std::move(children), window_element_root->node_id());
   return node;
 }
 
-std::unique_ptr<DOM::Node> AshDevToolsDOMAgent::BuildTreeForRootWidget(
+std::unique_ptr<DOM::Node> UIDevToolsDOMAgent::BuildTreeForRootWidget(
     UIElement* widget_element,
     views::Widget* widget) {
   std::unique_ptr<Array<DOM::Node>> children = Array<DOM::Node>::create();
 
   UIElement* view_element =
       new ViewElement(widget->GetRootView(), this, widget_element);
 
   children->addItem(BuildTreeForView(view_element, widget->GetRootView()));
   widget_element->AddChild(view_element);
 
   std::unique_ptr<ui::devtools::protocol::DOM::Node> node =
       BuildNode("Widget", GetAttributes(widget_element), std::move(children),
                 widget_element->node_id());
   return node;
 }
 
-std::unique_ptr<DOM::Node> AshDevToolsDOMAgent::BuildTreeForView(
+std::unique_ptr<DOM::Node> UIDevToolsDOMAgent::BuildTreeForView(
     UIElement* view_element,
     views::View* view) {
   std::unique_ptr<Array<DOM::Node>> children = Array<DOM::Node>::create();
 
   for (auto* child : view->GetChildrenInZOrder()) {
     UIElement* view_element_child = new ViewElement(child, this, view_element);
 
     children->addItem(BuildTreeForView(view_element_child, child));
     view_element->AddChild(view_element_child);
   }
   std::unique_ptr<ui::devtools::protocol::DOM::Node> node =
       BuildNode("View", GetAttributes(view_element), std::move(children),
                 view_element->node_id());
   return node;
 }
 
-void AshDevToolsDOMAgent::RemoveDomNode(UIElement* ui_element) {
+void UIDevToolsDOMAgent::RemoveDomNode(UIElement* ui_element) {
   for (auto* child_element : ui_element->children())
     RemoveDomNode(child_element);
   frontend()->childNodeRemoved(ui_element->parent()->node_id(),
                                ui_element->node_id());
 }
 
-void AshDevToolsDOMAgent::Reset() {
+void UIDevToolsDOMAgent::Reset() {
   is_building_tree_ = false;
   widget_for_highlighting_.reset();
   window_element_root_->Destroy();
   node_id_to_ui_element_.clear();
   observers_.Clear();
 }
 
-void AshDevToolsDOMAgent::InitializeHighlightingWidget() {
+void UIDevToolsDOMAgent::InitializeHighlightingWidget() {
   DCHECK(!widget_for_highlighting_);
   widget_for_highlighting_.reset(new views::Widget);
   views::Widget::InitParams params;
   params.type = views::Widget::InitParams::TYPE_WINDOW_FRAMELESS;
   params.activatable = views::Widget::InitParams::ACTIVATABLE_NO;
   params.ownership = views::Widget::InitParams::WIDGET_OWNS_NATIVE_WIDGET;
   params.opacity = views::Widget::InitParams::WindowOpacity::TRANSLUCENT_WINDOW;
   params.name = "HighlightingWidget";
   params.parent = nullptr;
   if (!root_windows().empty()) {
     params.parent =
-        root_windows()[0]->GetChildById(kShellWindowId_OverlayContainer);
+        root_windows()[0]->GetChildById(ash::kShellWindowId_OverlayContainer);
+    DCHECK(params.parent);
   }
   params.keep_on_top = true;
   params.accept_events = false;
   widget_for_highlighting_->Init(params);
 }
 
-void AshDevToolsDOMAgent::UpdateHighlight(
+void UIDevToolsDOMAgent::UpdateHighlight(
     const std::pair<aura::Window*, gfx::Rect>& window_and_bounds,
     SkColor background,
     SkColor border) {
   constexpr int kBorderThickness = 1;
   views::View* root_view = widget_for_highlighting_->GetRootView();
   root_view->SetBorder(views::CreateSolidBorder(kBorderThickness, border));
   root_view->set_background(
       views::Background::CreateSolidBackground(background));
   display::Display display =
       display::Screen::GetScreen()->GetDisplayNearestWindow(
           window_and_bounds.first);
   widget_for_highlighting_->GetNativeWindow()->SetBoundsInScreen(
       window_and_bounds.second, display);
 }
 
-ui::devtools::protocol::Response AshDevToolsDOMAgent::HighlightNode(
+ui::devtools::protocol::Response UIDevToolsDOMAgent::HighlightNode(
     std::unique_ptr<ui::devtools::protocol::DOM::HighlightConfig>
         highlight_config,
     int node_id) {
   if (!widget_for_highlighting_)
     InitializeHighlightingWidget();
 
   std::pair<aura::Window*, gfx::Rect> window_and_bounds =
       node_id_to_ui_element_.count(node_id)
           ? node_id_to_ui_element_[node_id]->GetNodeWindowAndBounds()
           : std::make_pair<aura::Window*, gfx::Rect>(nullptr, gfx::Rect());
 
   if (!window_and_bounds.first) {
     return ui::devtools::protocol::Response::Error(
         "No node found with that id");
   }
   SkColor border_color =
       RGBAToSkColor(highlight_config->getBorderColor(nullptr));
   SkColor content_color =
       RGBAToSkColor(highlight_config->getContentColor(nullptr));
   UpdateHighlight(window_and_bounds, content_color, border_color);
 
   if (!widget_for_highlighting_->IsVisible())
     widget_for_highlighting_->Show();
 
   return ui::devtools::protocol::Response::OK();
 }
 
 }  // namespace devtools
-}  // namespace ash
+}  // namespace ui