ui/views/accessibility/ax_window_obj_wrapper.cc

   1 // Copyright 2014 The Chromium Authors. All rights reserved.
   2 // Use of this source code is governed by a BSD-style license that can be
   3 // found in the LICENSE file.
   4
   5 #include "ui/views/accessibility/ax_window_obj_wrapper.h"
   6
   7 #include "base/strings/utf_string_conversions.h"
   8 #include "ui/accessibility/ax_node_data.h"
   9 #include "ui/aura/window.h"
  10 #include "ui/views/accessibility/ax_aura_obj_cache.h"
  11 #include "ui/views/widget/widget.h"
  12
  13 namespace views {
  14
  15 AXWindowObjWrapper::AXWindowObjWrapper(aura::Window* window)
  16     : window_(window), is_alert_(false) {
  17   window->AddObserver(this);
  18 }
  19
  20 AXWindowObjWrapper::~AXWindowObjWrapper() {
  21   window_->RemoveObserver(this);
  22   window_ = NULL;
  23 }
  24
  25 AXAuraObjWrapper* AXWindowObjWrapper::GetParent() {
  26   if (!window_->parent())
  27     return NULL;
  28
  29   return AXAuraObjCache::GetInstance()->GetOrCreate(window_->parent());
  30 }
  31
  32 void AXWindowObjWrapper::GetChildren(
  33     std::vector<AXAuraObjWrapper*>* out_children) {
  34   aura::Window::Windows children = window_->children();
  35   for (size_t i = 0; i < children.size(); ++i) {
  36     out_children->push_back(
  37         AXAuraObjCache::GetInstance()->GetOrCreate(children[i]));
  38   }
  39
  40   // Also consider any associated widgets as children.
  41   Widget* widget = Widget::GetWidgetForNativeView(window_);
  42   if (widget)
  43     out_children->push_back(AXAuraObjCache::GetInstance()->GetOrCreate(widget));
  44 }
  45
  46 void AXWindowObjWrapper::Serialize(ui::AXNodeData* out_node_data) {
  47   out_node_data->id = GetID();
  48   out_node_data->role = is_alert_ ? ui::AX_ROLE_ALERT : ui::AX_ROLE_WINDOW;
  49   // TODO(dtseng): Set better states.
  50   out_node_data->state = 0;
  51   out_node_data->location = window_->bounds();
  52
  53   // Root windows currently have a non readable name (e.g. Display1234...);
  54   // ignore them unless the window is the only node in the tree.
  55   if (window_->parent() || window_->children().size() == 0) {
  56     out_node_data->AddStringAttribute(ui::AX_ATTR_NAME,
  57                                       base::UTF16ToUTF8(window_->title()));
  58   }
  59 }
  60
  61 int32 AXWindowObjWrapper::GetID() {
  62   return AXAuraObjCache::GetInstance()->GetID(window_);
  63 }
  64
  65 void AXWindowObjWrapper::OnWindowDestroying(aura::Window* window) {
  66   AXAuraObjCache::GetInstance()->Remove(window);
  67 }
  68
  69 }  // namespace views