Added basic accessibility to TreeView.

ui/views/controls/tree/tree_view.h

 // Copyright (c) 2012 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_CONTROLS_TREE_TREE_VIEW_VIEWS_H_
 #define UI_VIEWS_CONTROLS_TREE_TREE_VIEW_VIEWS_H_
 
 #include <vector>
 
 #include "base/basictypes.h"
@@ skipping 18 matching lines @@
 // receive notification of selection changes and restrict editing.
 //
 // Note on implementation. This implementation doesn't scale well. In particular
 // it does not store any row information, but instead calculates it as
 // necessary. But it's more than adequate for current uses.
 class VIEWS_EXPORT TreeView : public ui::TreeModelObserver,
                               public TextfieldController,
                               public FocusChangeListener,
                               public PrefixDelegate {
  public:
+  // The tree view's class name.
+  static const char kViewClassName[];
+
   TreeView();
   virtual ~TreeView();
 
   // Returns new ScrollPane that contains the receiver.
   View* CreateParentIfNecessary();
 
   // Sets the model. TreeView does not take ownership of the model.
   void SetModel(ui::TreeModel* model);
   ui::TreeModel* model() const { return model_; }
 
@@ skipping 66 matching lines @@
   // View overrides:
   virtual void Layout() OVERRIDE;
   virtual gfx::Size GetPreferredSize() OVERRIDE;
   virtual bool AcceleratorPressed(const ui::Accelerator& accelerator) OVERRIDE;
   virtual bool OnMousePressed(const ui::MouseEvent& event) OVERRIDE;
   virtual ui::TextInputClient* GetTextInputClient() OVERRIDE;
   virtual void OnGestureEvent(ui::GestureEvent* event) OVERRIDE;
   virtual void ShowContextMenu(const gfx::Point& p,
                                ui::MenuSourceType source_type) OVERRIDE;
   virtual void GetAccessibleState(ui::AccessibleViewState* state) OVERRIDE;
+  virtual const char* GetClassName() const OVERRIDE;
 
   // TreeModelObserver overrides:
   virtual void TreeNodesAdded(ui::TreeModel* model,
                               ui::TreeModelNode* parent,
                               int start,
                               int count) OVERRIDE;
   virtual void TreeNodesRemoved(ui::TreeModel* model,
                                 ui::TreeModelNode* parent,
                                 int start,
                                 int count) OVERRIDE;
@@ skipping 248 matching lines @@
   int text_offset_;
 
   scoped_ptr<PrefixSelector> selector_;
 
   DISALLOW_COPY_AND_ASSIGN(TreeView);
 };
 
 }  // namespace views
 
 #endif  // UI_VIEWS_CONTROLS_TREE_TREE_VIEW_VIEWS_H_