Extend AXTreeSourceViews to handle aura::Window and views::Widget.

ui/views/accessibility/ax_view_obj_wrapper.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 "ui/views/accessibility/ax_view_obj_wrapper.h"
+
+#include "base/strings/utf_string_conversions.h"
+#include "ui/accessibility/ax_node_data.h"
+#include "ui/accessibility/ax_view_state.h"
+#include "ui/views/accessibility/ax_aura_obj_cache.h"
+#include "ui/views/view.h"
+#include "ui/views/widget/widget.h"
+
+namespace views {
+
+AXViewObjWrapper::AXViewObjWrapper(View* view)  : view_(view) {
+  DCHECK(view->GetWidget());
+  if (view->GetWidget())
+    AXAuraObjCache::GetInstance()->GetOrCreate(view->GetWidget());
+}
+
+AXViewObjWrapper::~AXViewObjWrapper() {}
+
+AXAuraObjWrapper* AXViewObjWrapper::GetParent() {
+  AXAuraObjCache* cache = AXAuraObjCache::GetInstance();
+  if (view_->parent())
+    return cache->GetOrCreate(view_->parent());
+
+  return cache->GetOrCreate(view_->GetWidget());
+}
+
+void AXViewObjWrapper::GetChildren(
+    std::vector<AXAuraObjWrapper*>* out_children) {
+  // TODO(dtseng): Need to handle |Widget| child of |View|.
+  for (int i = 0; i < view_->child_count(); ++i) {
+    AXAuraObjWrapper* child =
+        AXAuraObjCache::GetInstance()->GetOrCreate(view_->child_at(i));
+    out_children->push_back(child);
+  }
+}
+
+void AXViewObjWrapper::Serialize(ui::AXNodeData* out_node_data) {
+  ui::AXViewState view_data;
+  const_cast<View*>(view_)->GetAccessibleState(&view_data);

[aboxhall, 2014/04/28 19:50:38]

Why is this cast necessary?

[David Tseng, 2014/04/29 01:35:03]

Removed; (not sure, at some point, it was needed).

+  out_node_data->id = GetID();
+  out_node_data->role = view_data.role;
+  out_node_data->state = view_data.state();
+  out_node_data->location = view_->GetBoundsInScreen();
+
+  out_node_data->AddStringAttribute(
+      ui::AX_ATTR_NAME, base::UTF16ToUTF8(view_data.name));
+  out_node_data->AddStringAttribute(
+      ui::AX_ATTR_VALUE, base::UTF16ToUTF8(view_data.value));
+
+  out_node_data->AddIntAttribute(ui::AX_ATTR_TEXT_SEL_START,
+                                 view_data.selection_start);
+  out_node_data->AddIntAttribute(ui::AX_ATTR_TEXT_SEL_END,
+                                 view_data.selection_end);
+}
+
+int32 AXViewObjWrapper::GetID() {
+  return AXAuraObjCache::GetInstance()->GetID(view_);
+}
+
+}  // namespace views