Create a unified UIElement interface for Widget, View and Window.

ash/devtools/ash_devtools_unittest.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_css_agent.h"
 #include "ash/devtools/ash_devtools_dom_agent.h"
+#include "ash/devtools/ui_element.h"
+#include "ash/devtools/window_element.h"
 #include "ash/public/cpp/shell_window_ids.h"
 #include "ash/root_window_controller.h"
 #include "ash/shell.h"
 #include "ash/shell_port.h"
 #include "ash/test/ash_test.h"
 #include "ash/wm/widget_finder.h"
 #include "ash/wm_window.h"
 #include "base/memory/ptr_util.h"
 #include "base/strings/stringprintf.h"
 #include "ui/display/display.h"
@@ skipping 611 matching lines @@
   HighlightNode(root_view_node->getNodeId());
   ExpectHighlighted(root_view->GetBoundsInScreen(), 0);
 
   HideHighlight(0);
 
   // Highlight non-existent node
   HighlightNode(10000);
   EXPECT_FALSE(GetHighlightingWindow(0)->IsVisible());
 }
 
+int GetNodeIdFromWindow(devtools::UIElement* ui_element, WmWindow* window) {
+  for (auto* child : ui_element->GetChildren()) {
+    if (child->GetType() == devtools::UIElementType::WINDOW &&
+        static_cast<devtools::WindowElement*>(child)->window() == window) {
+      return child->GetNodeId();
+    }
+  }
+  for (auto* child : ui_element->GetChildren()) {
+    if (child->GetType() == devtools::UIElementType::WINDOW) {
+      int node_id = GetNodeIdFromWindow(child, window);
+      if (node_id > 0)
+        return node_id;
+    }
+  }
+  return 0;
+}
+
 TEST_F(AshDevToolsTest, MultipleDisplayHighlight) {
   UpdateDisplay("300x400,500x500");
 
   WmWindow::Windows root_windows = ShellPort::Get()->GetAllRootWindows();
   std::unique_ptr<WindowOwner> window_owner(
       CreateTestWindow(gfx::Rect(1, 2, 30, 40)));
   WmWindow* window = window_owner->window();
 
   std::unique_ptr<ui::devtools::protocol::DOM::Node> root;
   dom_agent()->getDocument(&root);
 
   EXPECT_EQ(root_windows[0], window->GetRootWindow());
-  HighlightNode(dom_agent()->GetNodeIdFromWindow(window));
+  HighlightNode(
+      GetNodeIdFromWindow(dom_agent()->GetWindowElementRoot(), window));
   ExpectHighlighted(window->GetBoundsInScreen(), 0);
 
   window->SetBoundsInScreen(gfx::Rect(500, 0, 50, 50), GetSecondaryDisplay());
   EXPECT_EQ(root_windows[1], window->GetRootWindow());
-  HighlightNode(dom_agent()->GetNodeIdFromWindow(window));
+  HighlightNode(
+      GetNodeIdFromWindow(dom_agent()->GetWindowElementRoot(), window));
   ExpectHighlighted(window->GetBoundsInScreen(), 1);
 }
 
 TEST_F(AshDevToolsTest, WindowWidgetViewGetMatchedStylesForNode) {
   std::unique_ptr<views::Widget> widget(
       CreateTestWidget(gfx::Rect(1, 1, 1, 1)));
   WmWindow* parent_window = WmWindow::Get(widget->GetNativeWindow());
   std::unique_ptr<WindowOwner> child_owner(CreateChildWindow(parent_window));
   WmWindow* window = child_owner->window();
   gfx::Rect window_bounds(2, 2, 3, 3);
@@ skipping 116 matching lines @@
   SetStyleTexts(root_view_node, "\nheight: 73;\n  ", true);
   EXPECT_EQ(gfx::Rect(25, 35, 45, 73), root_view->bounds());
 
   SetStyleTexts(root_view_node, "\nx: 10; y: 23; width: 52;\nvisibility: 1;\n",
                 true);
   EXPECT_EQ(gfx::Rect(10, 23, 52, 73), root_view->bounds());
   EXPECT_TRUE(root_view->visible());
 }
 
 }  // namespace ash