ui/views/accessibility/ax_window_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_window_obj_wrapper.h"

#include "base/strings/utf_string_conversions.h"
#include "ui/accessibility/ax_node_data.h"
#include "ui/aura/window.h"
#include "ui/views/accessibility/ax_aura_obj_cache.h"
#include "ui/views/widget/widget.h"

namespace views {

AXWindowObjWrapper::AXWindowObjWrapper(
    aura::Window* window) : window_(window) {
  window->AddObserver(this);
}

AXWindowObjWrapper::~AXWindowObjWrapper() {
  window_->RemoveObserver(this);
  window_ = NULL;
}

AXAuraObjWrapper* AXWindowObjWrapper::GetParent() {
  if (!window_->parent())
    return NULL;

  return AXAuraObjCache::GetInstance()->GetOrCreate(window_->parent());
}

void AXWindowObjWrapper::GetChildren(
    std::vector<AXAuraObjWrapper*>* out_children) {
  aura::Window::Windows children = window_->children();
  for (size_t i = 0; i < children.size(); ++i) {
    out_children->push_back(
        AXAuraObjCache::GetInstance()->GetOrCreate(children[i]));
  }

  // Also consider any associated widgets as children.
  Widget* widget = Widget::GetWidgetForNativeView(window_);
  if (widget)
    out_children->push_back(AXAuraObjCache::GetInstance()->GetOrCreate(widget));
}

void AXWindowObjWrapper::Serialize(ui::AXNodeData* out_node_data) {
  out_node_data->id = GetID();
  out_node_data->role = ui::AX_ROLE_WINDOW;
  // TODO(dtseng): Set better states.
  out_node_data->state = 0;
  out_node_data->location = window_->bounds();

  // Root windows currently have a non readable name (e.g. Display1234...);
  // ignore them unless the window is the only node in the tree.
  if (window_->parent() || window_->children().size() == 0) {
    out_node_data->AddStringAttribute(ui::AX_ATTR_NAME,
                                      base::UTF16ToUTF8(window_->title()));
  }
}

int32 AXWindowObjWrapper::GetID() {
  return AXAuraObjCache::GetInstance()->GetID(window_);
}

void AXWindowObjWrapper::OnWindowDestroying(aura::Window* window) {
  AXAuraObjCache::GetInstance()->Remove(window);
}

}  // namespace views