Add ash devtools client

ash/common/devtools/devtools_client_backend.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_backend.h"
+
+#include "ash/common/wm_shell.h"
+#include "ash/common/wm_window.h"
+#include "ui/devtools/DOM.h"
+#include "ui/devtools/devtools_server.h"
+#include "ui/views/view.h"
+#include "ui/views/widget/widget.h"
+
+namespace ui {
+namespace devtools {
+
+AshDevToolsBackend::AshDevToolsBackend(ash::WmShell* shell) : shell_(shell) {
+  DCHECK(shell_);
+}
+
+AshDevToolsBackend::~AshDevToolsBackend() {}
+
+namespace {

[sadrul, 2016/10/17 16:18:59]

This anon-namespace block should go before the AshDevToolsBackend ctor/dtor

[Sarmad Hashmi, 2016/10/17 19:11:47]

Done.

+using namespace protocol;
+
+DOM::NodeId node_ids = 0;

[sadrul, 2016/10/17 16:18:59]

Move this into BuildNode below, as 'static DOM::NodeId node_ids = 0;'

[Sarmad Hashmi, 2016/10/17 19:11:48]

Done.

+
+std::unique_ptr<DOM::Node> buildNode(

[sadrul, 2016/10/17 16:18:59]

BuildNode

[Sarmad Hashmi, 2016/10/17 19:11:48]

Done.

+    const String& name,
+    std::unique_ptr<Array<String>> attributes,

[sadrul, 2016/10/17 16:18:59]

Where is Array defined?

[Sarmad Hashmi, 2016/10/17 19:11:47]

protocol::Array (generated)

+    std::unique_ptr<Array<DOM::Node>> children) {
+  return DOM::Node::create()
+      .setNodeId(node_ids++)
+      .setNodeName(name)
+      .setNodeType(1)

[sadrul, 2016/10/17 16:18:59]

What does '1' mean here?

[Sarmad Hashmi, 2016/10/17 19:11:47]

https://www.w3.org/TR/1998/REC-DOM-Level-1-19981001/level-one-core.html#ID-19...

+      .setAttributes(std::move(attributes))
+      .setChildNodeCount(children->length())
+      .setChildren(std::move(children))
+      .build();
+}
+
+std::unique_ptr<Array<String>> getAttributes(const ash::WmWindow* window) {

[sadrul, 2016/10/17 16:18:59]

GetAttributes

[Sarmad Hashmi, 2016/10/17 19:11:47]

Done.

+  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()));
+  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) {
+  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) {
+  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) {
+  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
+
+std::unique_ptr<protocol::DOM::Node> AshDevToolsBackend::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 AshDevToolsBackend::getDocument(
+    protocol::ErrorString* error,
+    std::unique_ptr<protocol::DOM::Node>* out_root) {
+  *out_root = buildInitialTree();
+}
+
+}  // namespace devtools
+}  // namespace ui