Implement automatic load of composed/embedded automation trees

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"
@@ skipping 24 matching lines @@
   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;
   view_->GetAccessibleState(&view_data);
+
   out_node_data->id = GetID();
   out_node_data->role = view_data.role;
 
   out_node_data->state = view_data.state();
   if (view_->HasFocus())
     out_node_data->state |= 1 << ui::AX_STATE_FOCUSED;
   if (view_->IsFocusable())
     out_node_data->state |= 1 << ui::AX_STATE_FOCUSABLE;
 
   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);
+  if (view_data.selection_start > -1 &&
+      view_data.selection_end > -1) {
+    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_);
 }
 
 void AXViewObjWrapper::DoDefault() {
   gfx::Rect rect = view_->GetBoundsInScreen();
   gfx::Point center = rect.CenterPoint();
   view_->OnMousePressed(ui::MouseEvent(ui::ET_MOUSE_PRESSED, center, center,
                                        ui::EF_LEFT_MOUSE_BUTTON,
                                        ui::EF_LEFT_MOUSE_BUTTON));
 }
 
 void AXViewObjWrapper::Focus() {
   view_->RequestFocus();
 }
 
 void AXViewObjWrapper::MakeVisible() {
   // TODO(dtseng): Implement.
 }
 
 void AXViewObjWrapper::SetSelection(int32 start, int32 end) {
   // TODO(dtseng): Implement.
 }
 
 }  // namespace views