Hide AXPlatformNode on ChromeOS.

ui/views/accessibility/native_view_accessibility.cc

Index: ui/views/accessibility/native_view_accessibility.cc
diff --git a/ui/views/accessibility/native_view_accessibility.cc b/ui/views/accessibility/native_view_accessibility.cc
deleted file mode 100644
index 891d2cc3f50ec9d488fa4ba76ce4f66b52583846..0000000000000000000000000000000000000000
--- a/ui/views/accessibility/native_view_accessibility.cc
+++ /dev/null
@@ -1,281 +0,0 @@
-// Copyright (c) 2013 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/native_view_accessibility.h"
-
-#include "base/memory/ptr_util.h"
-#include "base/strings/utf_string_conversions.h"
-#include "ui/events/event_utils.h"
-#include "ui/gfx/native_widget_types.h"
-#include "ui/views/controls/native/native_view_host.h"
-#include "ui/views/view.h"
-#include "ui/views/widget/widget.h"
-
-namespace views {
-
-#if !defined(PLATFORM_HAS_NATIVE_VIEW_ACCESSIBILITY_IMPL)
-// static
-std::unique_ptr<NativeViewAccessibility> NativeViewAccessibility::Create(
-    View* view) {
-  // Use WrapUnique over MakeUnique to invoke the protected constructor.
-  return base::WrapUnique<NativeViewAccessibility>(
-      new NativeViewAccessibility(view));
-}
-#endif  // !defined(PLATFORM_HAS_NATIVE_VIEW_ACCESSIBILITY_IMPL)
-
-NativeViewAccessibility::NativeViewAccessibility(View* view)
-    : view_(view),
-      parent_widget_(nullptr),
-      ax_node_(nullptr) {
-  ax_node_ = ui::AXPlatformNode::Create(this);
-}
-
-NativeViewAccessibility::~NativeViewAccessibility() {
-  if (ax_node_)
-    ax_node_->Destroy();
-  if (parent_widget_)
-    parent_widget_->RemoveObserver(this);
-}
-
-gfx::NativeViewAccessible NativeViewAccessibility::GetNativeObject() {
-  return ax_node_ ? ax_node_->GetNativeViewAccessible() : nullptr;
-}
-
-void NativeViewAccessibility::NotifyAccessibilityEvent(ui::AXEvent event_type) {
-  if (ax_node_)
-    ax_node_->NotifyAccessibilityEvent(event_type);
-}
-
-bool NativeViewAccessibility::SetFocused(bool focused) {
-  if (!ui::AXNodeData::IsFlagSet(GetData().state, ui::AX_STATE_FOCUSABLE))
-    return false;
-
-  if (focused)
-    view_->RequestFocus();
-  else if (view_->HasFocus())
-    view_->GetFocusManager()->ClearFocus();
-  return true;
-}
-
-// ui::AXPlatformNodeDelegate
-
-const ui::AXNodeData& NativeViewAccessibility::GetData() {
-  data_ = ui::AXNodeData();
-  data_.state = 0;
-
-  // Views may misbehave if their widget is closed; return an unknown role
-  // rather than possibly crashing.
-  if (!view_->GetWidget() || view_->GetWidget()->IsClosed()) {
-    data_.role = ui::AX_ROLE_UNKNOWN;
-    data_.state = 1 << ui::AX_STATE_DISABLED;
-    return data_;
-  }
-
-  view_->GetAccessibleNodeData(&data_);
-  data_.location = gfx::RectF(view_->GetBoundsInScreen());
-  base::string16 description;
-  view_->GetTooltipText(gfx::Point(), &description);
-  data_.AddStringAttribute(ui::AX_ATTR_DESCRIPTION,
-                           base::UTF16ToUTF8(description));
-
-  if (view_->IsAccessibilityFocusable())
-    data_.state |= (1 << ui::AX_STATE_FOCUSABLE);
-
-  if (!view_->enabled())
-    data_.state |= (1 << ui::AX_STATE_DISABLED);
-
-  if (!view_->IsDrawn())
-    data_.state |= (1 << ui::AX_STATE_INVISIBLE);
-
-  return data_;
-}
-
-int NativeViewAccessibility::GetChildCount() {
-  int child_count = view_->child_count();
-
-  std::vector<Widget*> child_widgets;
-  PopulateChildWidgetVector(&child_widgets);
-  child_count += child_widgets.size();
-
-  return child_count;
-}
-
-gfx::NativeViewAccessible NativeViewAccessibility::ChildAtIndex(int index) {
-  // If this is a root view, our widget might have child widgets. Include
-  std::vector<Widget*> child_widgets;
-  PopulateChildWidgetVector(&child_widgets);
-  int child_widget_count = static_cast<int>(child_widgets.size());
-
-  if (index < view_->child_count()) {
-    return view_->child_at(index)->GetNativeViewAccessible();
-  } else if (index < view_->child_count() + child_widget_count) {
-    Widget* child_widget = child_widgets[index - view_->child_count()];
-    return child_widget->GetRootView()->GetNativeViewAccessible();
-  }
-
-  return nullptr;
-}
-
-gfx::NativeWindow NativeViewAccessibility::GetTopLevelWidget() {
-  if (view_->GetWidget())
-    return view_->GetWidget()->GetTopLevelWidget()->GetNativeWindow();
-  return nullptr;
-}
-
-gfx::NativeViewAccessible NativeViewAccessibility::GetParent() {
-  if (view_->parent())
-    return view_->parent()->GetNativeViewAccessible();
-
-  if (parent_widget_)
-    return parent_widget_->GetRootView()->GetNativeViewAccessible();
-
-  return nullptr;
-}
-
-gfx::Vector2d NativeViewAccessibility::GetGlobalCoordinateOffset() {
-  return gfx::Vector2d(0, 0);  // location is already in screen coordinates.
-}
-
-gfx::NativeViewAccessible NativeViewAccessibility::HitTestSync(int x, int y) {
-  if (!view_ || !view_->GetWidget())
-    return nullptr;
-
-  // Search child widgets first, since they're on top in the z-order.
-  std::vector<Widget*> child_widgets;
-  PopulateChildWidgetVector(&child_widgets);
-  for (Widget* child_widget : child_widgets) {
-    View* child_root_view = child_widget->GetRootView();
-    gfx::Point point(x, y);
-    View::ConvertPointFromScreen(child_root_view, &point);
-    if (child_root_view->HitTestPoint(point))
-      return child_root_view->GetNativeViewAccessible();
-  }
-
-  gfx::Point point(x, y);
-  View::ConvertPointFromScreen(view_, &point);
-  if (!view_->HitTestPoint(point))
-    return nullptr;
-
-  // Check if the point is within any of the immediate children of this
-  // view. We don't have to search further because AXPlatformNode will
-  // do a recursive hit test if we return anything other than |this| or NULL.
-  for (int i = view_->child_count() - 1; i >= 0; --i) {
-    View* child_view = view_->child_at(i);
-    if (!child_view->visible())
-      continue;
-
-    gfx::Point point_in_child_coords(point);
-    view_->ConvertPointToTarget(view_, child_view, &point_in_child_coords);
-    if (child_view->HitTestPoint(point_in_child_coords))
-      return child_view->GetNativeViewAccessible();
-  }
-
-  // If it's not inside any of our children, it's inside this view.
-  return GetNativeObject();
-}
-
-gfx::NativeViewAccessible NativeViewAccessibility::GetFocus() {
-  FocusManager* focus_manager = view_->GetFocusManager();
-  View* focused_view =
-      focus_manager ? focus_manager->GetFocusedView() : nullptr;
-  return focused_view ? focused_view->GetNativeViewAccessible() : nullptr;
-}
-
-gfx::AcceleratedWidget
-NativeViewAccessibility::GetTargetForNativeAccessibilityEvent() {
-  return gfx::kNullAcceleratedWidget;
-}
-
-bool NativeViewAccessibility::AccessibilityPerformAction(
-    const ui::AXActionData& data) {
-  switch (data.action) {
-    // Handle accessible actions that apply to all Views here.
-    case ui::AX_ACTION_DO_DEFAULT:
-      DoDefaultAction();
-      return true;
-    case ui::AX_ACTION_FOCUS:
-      return SetFocused(true);
-    case ui::AX_ACTION_BLUR:
-      return SetFocused(false);
-
-    case ui::AX_ACTION_NONE:
-      NOTREACHED();
-      break;
-
-    // All other actions can potentially be dealt with by the View itself.
-    default:
-      return view_->HandleAccessibleAction(data);
-      break;
-  }
-  return false;
-}
-
-void NativeViewAccessibility::DoDefaultAction() {
-  gfx::Point center = view_->GetLocalBounds().CenterPoint();
-  view_->OnMousePressed(ui::MouseEvent(ui::ET_MOUSE_PRESSED,
-                                       center,
-                                       center,
-                                       ui::EventTimeForNow(),
-                                       ui::EF_LEFT_MOUSE_BUTTON,
-                                       ui::EF_LEFT_MOUSE_BUTTON));
-  view_->OnMouseReleased(ui::MouseEvent(ui::ET_MOUSE_RELEASED,
-                                        center,
-                                        center,
-                                        ui::EventTimeForNow(),
-                                        ui::EF_LEFT_MOUSE_BUTTON,
-                                        ui::EF_LEFT_MOUSE_BUTTON));
-}
-
-void NativeViewAccessibility::OnWidgetDestroying(Widget* widget) {
-  if (parent_widget_ == widget) {
-    parent_widget_->RemoveObserver(this);
-    parent_widget_ = nullptr;
-  }
-}
-
-void NativeViewAccessibility::SetParentWidget(Widget* parent_widget) {
-  if (parent_widget_)
-    parent_widget_->RemoveObserver(this);
-  parent_widget_ = parent_widget;
-  parent_widget_->AddObserver(this);
-}
-
-void NativeViewAccessibility::PopulateChildWidgetVector(
-    std::vector<Widget*>* result_child_widgets) {
-  // Only attach child widgets to the root view.
-  Widget* widget = view_->GetWidget();
-  // Note that during window close, a Widget may exist in a state where it has
-  // no NativeView, but hasn't yet torn down its view hierarchy.
-  if (!widget || !widget->GetNativeView() || widget->GetRootView() != view_)
-    return;
-
-  std::set<Widget*> child_widgets;
-  Widget::GetAllOwnedWidgets(widget->GetNativeView(), &child_widgets);
-  for (auto iter = child_widgets.begin(); iter != child_widgets.end(); ++iter) {
-    Widget* child_widget = *iter;
-    DCHECK_NE(widget, child_widget);
-
-    if (!child_widget->IsVisible())
-      continue;
-
-    if (widget->GetNativeWindowProperty(kWidgetNativeViewHostKey))
-      continue;
-
-    gfx::NativeViewAccessible child_widget_accessible =
-        child_widget->GetRootView()->GetNativeViewAccessible();
-    ui::AXPlatformNode* child_widget_platform_node =
-        ui::AXPlatformNode::FromNativeViewAccessible(child_widget_accessible);
-    if (child_widget_platform_node) {
-      NativeViewAccessibility* child_widget_view_accessibility =
-          static_cast<NativeViewAccessibility*>(
-              child_widget_platform_node->GetDelegate());
-      if (child_widget_view_accessibility->parent_widget() != widget)
-        child_widget_view_accessibility->SetParentWidget(widget);
-    }
-
-    result_child_widgets->push_back(child_widget);
-  }
-}
-
-}  // namespace views