Add ash devtools client

ash/common/devtools/devtools_client_dom.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/common/devtools/devtools_client_dom.h"
+
+#include "ash/common/wm_shell.h"
+#include "ash/common/wm_window.h"
+#include "components/ui_devtools/DOM.h"
+#include "components/ui_devtools/devtools_server.h"
+#include "ui/views/view.h"
+#include "ui/views/widget/widget.h"
+
+namespace ui {
+namespace devtools {
+
+namespace {
+using namespace protocol;
+
+std::unique_ptr<DOM::Node> BuildNode(
+    const String& name,

[sadrul, 2016/10/26 19:20:41]

Is this std::string? If so, use std::string in all the places in here.

[Sarmad Hashmi, 2016/10/26 20:22:58]

Done.

+    std::unique_ptr<Array<String>> attributes,
+    std::unique_ptr<Array<DOM::Node>> children) {
+  static DOM::NodeId node_ids = 0;
+  return DOM::Node::create()
+      .setNodeId(node_ids++)
+      .setNodeName(name)
+      .setNodeType(1)

[sadrul, 2016/10/26 19:20:41]

Let's give this a name so it's easier to read:

  constexpr int kDomElementNodeType = 1;
  return DOM::Node::create()....setNodeType(kDomElementNodeType)...

[Sarmad Hashmi, 2016/10/26 20:22:57]

Done.

+      .setAttributes(std::move(attributes))
+      .setChildNodeCount(children->length())
+      .setChildren(std::move(children))
+      .build();
+}
+
+std::unique_ptr<Array<String>> GetAttributes(const ash::WmWindow* window) {
+  std::unique_ptr<Array<String>> attributes = Array<String>::create();
+  attributes->addItem("name");
+  attributes->addItem(window->GetName());
+  attributes->addItem("visible");
+  attributes->addItem(window->IsVisible() ? "true" : "false");
+  attributes->addItem("active");
+  attributes->addItem(window->IsActive() ? "true" : "false");
+  attributes->addItem("bounds_height");
+  attributes->addItem(base::IntToString(window->GetBounds().height()));
+  attributes->addItem("bounds_width");
+  attributes->addItem(base::IntToString(window->GetBounds().width()));

[sadrul, 2016/10/26 19:20:41]

A number of these attributes (e.g. bounds, visibility, opacity etc.) will be
done differently, right? Would it make sense to leave those out from here for
now?

[Sarmad Hashmi, 2016/10/26 20:22:58]

Yep you're right. Done.

+  return attributes;
+}
+
+std::unique_ptr<Array<String>> GetAttributes(const views::Widget* widget) {
+  std::unique_ptr<Array<String>> attributes = Array<String>::create();
+  attributes->addItem("name");
+  attributes->addItem(widget->GetName());
+  attributes->addItem("visible");
+  attributes->addItem(widget->IsVisible() ? "true" : "false");
+  attributes->addItem("active");
+  attributes->addItem(widget->IsActive() ? "true" : "false");
+  return attributes;
+}
+
+std::unique_ptr<Array<String>> GetAttributes(const views::View* view) {
+  std::unique_ptr<Array<String>> attributes = Array<String>::create();
+  attributes->addItem("name");
+  attributes->addItem(view->GetClassName());
+  attributes->addItem("visible");
+  attributes->addItem(view->visible() ? "true" : "false");
+  attributes->addItem("x");
+  attributes->addItem(base::IntToString(view->x()));
+  attributes->addItem("y");
+  attributes->addItem(base::IntToString(view->y()));
+  attributes->addItem("bounds_height");
+  attributes->addItem(base::IntToString(view->bounds().bottom()));
+  attributes->addItem("bounds_width");
+  attributes->addItem(base::IntToString(view->bounds().right()));
+  return attributes;
+}
+
+std::unique_ptr<DOM::Node> BuildTreeForRootView(views::View* view) {

[sadrul, 2016/10/26 19:20:41]

BuildTreeForView, since this is called for all Views in the tree.

[Sarmad Hashmi, 2016/10/26 20:22:57]

Done.

+  std::unique_ptr<Array<DOM::Node>> children = Array<DOM::Node>::create();
+  for (int i = 0, count = view->child_count(); i < count; i++) {
+    children->addItem(BuildTreeForRootView(view->child_at(i)));
+  }
+  return BuildNode("View", GetAttributes(view), std::move(children));
+}
+
+std::unique_ptr<DOM::Node> BuildTreeForRootWidget(views::Widget* widget) {

[sadrul, 2016/10/26 19:20:41]

BuildTreeForWidget

[Sarmad Hashmi, 2016/10/26 20:22:58]

Done.

+  std::unique_ptr<Array<DOM::Node>> children = Array<DOM::Node>::create();
+  children->addItem(BuildTreeForRootView(widget->GetRootView()));
+  return BuildNode("Widget", GetAttributes(widget), std::move(children));
+}
+
+std::unique_ptr<DOM::Node> BuildTreeForRootWindow(ash::WmWindow* window) {

[sadrul, 2016/10/26 19:20:41]

BuildTreeForWindow

[Sarmad Hashmi, 2016/10/26 20:22:57]

Done.

+  std::unique_ptr<Array<DOM::Node>> children = Array<DOM::Node>::create();
+  for (ash::WmWindow* child : window->GetChildren()) {
+    children->addItem(BuildTreeForRootWindow(child));
+    views::Widget* widget = child->GetInternalWidget();
+    if (widget)
+      children->addItem(BuildTreeForRootWidget(widget));
+  }
+  return BuildNode("Window", GetAttributes(window), std::move(children));
+}
+
+}  // namespace
+
+AshDevToolsClientDOM::AshDevToolsClientDOM(ash::WmShell* shell)
+    : shell_(shell) {
+  DCHECK(shell_);
+}
+
+AshDevToolsClientDOM::~AshDevToolsClientDOM() {}
+
+std::unique_ptr<protocol::DOM::Node> AshDevToolsClientDOM::BuildInitialTree() {
+  std::unique_ptr<Array<DOM::Node>> children = Array<DOM::Node>::create();
+  for (ash::WmWindow* window : shell_->GetAllRootWindows()) {
+    children->addItem(BuildTreeForRootWindow(window));
+  }
+  return BuildNode("root", nullptr, std::move(children));
+}
+
+void AshDevToolsClientDOM::getDocument(
+    protocol::ErrorString* error,
+    std::unique_ptr<protocol::DOM::Node>* out_root) {
+  *out_root = BuildInitialTree();
+}
+
+}  // namespace devtools
+}  // namespace ui