Reland Extend AXTreeSourceViews to support views::Widget and aura::Window.

chrome/browser/ui/views/accessibility/automation_manager_views.cc

-// Copyright 2014 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 "chrome/browser/ui/views/accessibility/automation_manager_views.h"
-
-#include <vector>
-
-#include "base/command_line.h"
-#include "base/memory/singleton.h"
-#include "chrome/browser/browser_process.h"
-#include "chrome/browser/extensions/api/automation_internal/automation_util.h"
-#include "chrome/browser/profiles/profile.h"
-#include "chrome/browser/profiles/profile_manager.h"
-#include "chrome/common/chrome_switches.h"
-#include "content/public/browser/ax_event_notification_details.h"
-#include "ui/views/view.h"
-#include "ui/views/widget/widget.h"
-
-// static
-AutomationManagerViews* AutomationManagerViews::GetInstance() {
-  return Singleton<AutomationManagerViews>::get();
-}
-
-void AutomationManagerViews::HandleEvent(Profile* profile,
-                                         views::View* view,
-                                         ui::AXEvent event_type) {
-  if (!CommandLine::ForCurrentProcess()->HasSwitch(
-          switches::kEnableAutomationAPI)) {
-    return;
-  }
-
-  // TODO(dtseng): Events should only be delivered to extensions with the
-  // desktop permission.
-  views::Widget* widget = view->GetWidget();
-  if (!widget)
-    return;
-
-  if (!profile && g_browser_process->profile_manager()) {
-    profile = g_browser_process->profile_manager()->GetLastUsedProfile();
-  }
-  if (!profile) {
-    LOG(WARNING) << "Accessibility notification but no profile";
-    return;
-  }
-
-  if (!current_tree_.get() ||
-      current_tree_->GetRoot()->GetWidget() != widget) {
-    current_tree_.reset(new views::AXTreeSourceViews(widget));
-    current_tree_serializer_.reset(
-        new ui::AXTreeSerializer<views::View*>(current_tree_.get()));
-    // TODO(dtseng): Need to send a load complete and clear any previous desktop
-    // trees.
-  }
-
-  ui::AXTreeUpdate out_update;
-  current_tree_serializer_->SerializeChanges(view, &out_update);
-
-  // Route this event to special process/routing ids recognized by the
-  // Automation API as the desktop tree.
-
-  // TODO(dtseng): Would idealy define these special desktop constants in idl.
-  content::AXEventNotificationDetails detail(out_update.nodes,
-                                             event_type,
-                                             current_tree_->GetId(view),
-                                             0, /* process_id */
-                                             0 /* routing_id */);
-  std::vector<content::AXEventNotificationDetails> details;
-  details.push_back(detail);
-  extensions::automation_util::DispatchAccessibilityEventsToAutomation(
-      details, profile);
-}
-
-AutomationManagerViews::AutomationManagerViews() {}
-
-AutomationManagerViews::  ~AutomationManagerViews() {}