src/ui/views/accessibility/native_view_accessibility.cc

   1 // Copyright (c) 2013 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/native_view_accessibility.h"
   6
   7 #include "ui/accessibility/ax_view_state.h"
   8 #include "ui/views/view.h"
   9 #include "ui/views/widget/widget.h"
  10
  11 namespace views {
  12
  13 #if !defined(OS_WIN)
  14 // static
  15 NativeViewAccessibility* NativeViewAccessibility::Create(View* view) {
  16   DCHECK(view);
  17   NativeViewAccessibility* instance = new NativeViewAccessibility();
  18   instance->set_view(view);
  19   return instance;
  20 }
  21 #endif
  22
  23 NativeViewAccessibility::NativeViewAccessibility()
  24     : view_(NULL), ax_node_(ui::AXPlatformNode::Create(this)) {
  25 }
  26
  27 NativeViewAccessibility::~NativeViewAccessibility() {
  28   if (ax_node_)
  29     ax_node_->Destroy();
  30 }
  31
  32 gfx::NativeViewAccessible NativeViewAccessibility::GetNativeObject() {
  33   return ax_node_ ? ax_node_->GetNativeViewAccessible() : NULL;
  34 }
  35
  36 void NativeViewAccessibility::Destroy() {
  37   delete this;
  38 }
  39
  40 #if !defined(OS_WIN)
  41 // static
  42 void NativeViewAccessibility::RegisterWebView(View* web_view) {
  43 }
  44
  45 // static
  46 void NativeViewAccessibility::UnregisterWebView(View* web_view) {
  47 }
  48 #endif
  49
  50 // ui::AXPlatformNodeDelegate
  51
  52 ui::AXNodeData* NativeViewAccessibility::GetData() {
  53   ui::AXViewState state;
  54   view_->GetAccessibleState(&state);
  55   data_.role = state.role;
  56   data_.location = view_->GetBoundsInScreen();
  57   return &data_;
  58 }
  59
  60 int NativeViewAccessibility::GetChildCount() {
  61   return view_->child_count();
  62 }
  63
  64 gfx::NativeViewAccessible NativeViewAccessibility::ChildAtIndex(int index) {
  65   if (index < 0 || index >= view_->child_count())
  66     return NULL;
  67   return view_->child_at(index)->GetNativeViewAccessible();
  68 }
  69
  70 gfx::NativeViewAccessible NativeViewAccessibility::GetParent() {
  71   if (view_->parent())
  72     return view_->parent()->GetNativeViewAccessible();
  73
  74 #if defined(OS_MACOSX)
  75   if (view_->GetWidget())
  76     return view_->GetWidget()->GetNativeView();
  77 #endif
  78
  79   return NULL;
  80 }
  81
  82 gfx::Vector2d NativeViewAccessibility::GetGlobalCoordinateOffset() {
  83   return gfx::Vector2d(0, 0);  // location is already in screen coordinates.
  84 }
  85
  86 void NativeViewAccessibility::NotifyAccessibilityEvent(ui::AXEvent event_type) {
  87 }
  88
  89 }  // namespace views