Hide AXPlatformNode on ChromeOS.

ui/views/accessibility/native_view_accessibility_base.cc

 // 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 "ui/views/accessibility/native_view_accessibility_base.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)
+NativeViewAccessibilityBase::NativeViewAccessibilityBase(View* view)
     : view_(view),
       parent_widget_(nullptr),
-      ax_node_(nullptr) {
-  ax_node_ = ui::AXPlatformNode::Create(this);
+      ax_node_(ui::AXPlatformNode::Create(this)) {
+  DCHECK(ax_node_);
 }
 
-NativeViewAccessibility::~NativeViewAccessibility() {
-  if (ax_node_)
-    ax_node_->Destroy();
+NativeViewAccessibilityBase::~NativeViewAccessibilityBase() {
+  ax_node_->Destroy();
   if (parent_widget_)
     parent_widget_->RemoveObserver(this);
 }
 
-gfx::NativeViewAccessible NativeViewAccessibility::GetNativeObject() {
-  return ax_node_ ? ax_node_->GetNativeViewAccessible() : nullptr;
+gfx::NativeViewAccessible NativeViewAccessibilityBase::GetNativeObject() {
+  return ax_node_->GetNativeViewAccessible();
 }
 
-void NativeViewAccessibility::NotifyAccessibilityEvent(ui::AXEvent event_type) {
-  if (ax_node_)
-    ax_node_->NotifyAccessibilityEvent(event_type);
+void NativeViewAccessibilityBase::NotifyAccessibilityEvent(
+    ui::AXEvent event_type) {
+  ax_node_->NotifyAccessibilityEvent(event_type);
 }
 
-bool NativeViewAccessibility::SetFocused(bool focused) {
+bool NativeViewAccessibilityBase::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() {
+const ui::AXNodeData& NativeViewAccessibilityBase::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_;
   }
@@ skipping 10 matching lines @@
 
   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 NativeViewAccessibilityBase::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) {
+gfx::NativeViewAccessible NativeViewAccessibilityBase::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() {
+gfx::NativeWindow NativeViewAccessibilityBase::GetTopLevelWidget() {
   if (view_->GetWidget())
     return view_->GetWidget()->GetTopLevelWidget()->GetNativeWindow();
   return nullptr;
 }
 
-gfx::NativeViewAccessible NativeViewAccessibility::GetParent() {
+gfx::NativeViewAccessible NativeViewAccessibilityBase::GetParent() {
   if (view_->parent())
     return view_->parent()->GetNativeViewAccessible();
 
   if (parent_widget_)
     return parent_widget_->GetRootView()->GetNativeViewAccessible();
 
   return nullptr;
 }
 
-gfx::Vector2d NativeViewAccessibility::GetGlobalCoordinateOffset() {
+gfx::Vector2d NativeViewAccessibilityBase::GetGlobalCoordinateOffset() {
   return gfx::Vector2d(0, 0);  // location is already in screen coordinates.
 }
 
-gfx::NativeViewAccessible NativeViewAccessibility::HitTestSync(int x, int y) {
+gfx::NativeViewAccessible NativeViewAccessibilityBase::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);
@@ skipping 17 matching lines @@
     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() {
+gfx::NativeViewAccessible NativeViewAccessibilityBase::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() {
+NativeViewAccessibilityBase::GetTargetForNativeAccessibilityEvent() {
   return gfx::kNullAcceleratedWidget;
 }
 
-bool NativeViewAccessibility::AccessibilityPerformAction(
+bool NativeViewAccessibilityBase::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() {
+void NativeViewAccessibilityBase::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));
+  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) {
+void NativeViewAccessibilityBase::OnWidgetDestroying(Widget* widget) {
   if (parent_widget_ == widget) {
     parent_widget_->RemoveObserver(this);
     parent_widget_ = nullptr;
   }
 }
 
-void NativeViewAccessibility::SetParentWidget(Widget* parent_widget) {
+void NativeViewAccessibilityBase::SetParentWidget(Widget* parent_widget) {
   if (parent_widget_)
     parent_widget_->RemoveObserver(this);
   parent_widget_ = parent_widget;
   parent_widget_->AddObserver(this);
 }
 
-void NativeViewAccessibility::PopulateChildWidgetVector(
+void NativeViewAccessibilityBase::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*>(
+      NativeViewAccessibilityBase* child_widget_view_accessibility =
+          static_cast<NativeViewAccessibilityBase*>(
               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