Extend AXTreeSourceViews to handle aura::Window and views::Widget.

ui/views/accessibility/ax_tree_source_views.h

-// 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.
-
-#ifndef UI_VIEWS_ACCESSIBILITY_AX_TREE_SOURCE_VIEWS_H_
-#define UI_VIEWS_ACCESSIBILITY_AX_TREE_SOURCE_VIEWS_H_
-
-#include <map>
-
-#include "base/memory/scoped_ptr.h"
-#include "ui/accessibility/ax_tree_source.h"
-#include "ui/views/view.h"
-#include "ui/views/widget/widget_observer.h"
-#include "ui/views/widget/widget_removals_observer.h"
-
-namespace views {
-class AXViewStore;
-
-// This class exposes the views hierarchy as an accessibility tree permitting
-// use with other accessibility classes.
-class VIEWS_EXPORT AXTreeSourceViews : public ui::AXTreeSource<View*>,
-                                       public WidgetObserver,
-                                       public WidgetRemovalsObserver {
- public:
-  explicit AXTreeSourceViews(Widget* root);
-  virtual ~AXTreeSourceViews();
-
-  // AXTreeSource implementation.
-  virtual View* GetRoot() const OVERRIDE;
-  virtual View* GetFromId(int32 id) const OVERRIDE;
-  virtual int32 GetId(View* node) const OVERRIDE;
-  virtual void GetChildren(View* node,
-                           std::vector<View*>* out_children) const OVERRIDE;
-  virtual View* GetParent(View* node) const OVERRIDE;
-  virtual bool IsValid(View* node) const OVERRIDE;
-  virtual bool IsEqual(View* node1,
-                       View* node2) const OVERRIDE;
-  virtual View* GetNull() const OVERRIDE;
-  virtual void SerializeNode(
-      View* node, ui::AXNodeData* out_data) const OVERRIDE;
-
-  // WidgetObserver overrides.
-  virtual void OnWidgetDestroyed(Widget* widget) OVERRIDE;
-
-  // WidgetRemovalsObserver overrides.
-  virtual void OnWillRemoveView(Widget* widget, View* view) OVERRIDE;
-
- private:
-  scoped_ptr<AXViewStore> view_store_;
-
-  views::Widget* root_;
-};
-
-} // namespace views
-
-#endif  // UI_VIEWS_ACCESSIBILITY_AX_TREE_SOURCE_VIEWS_H_