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 #ifndef UI_VIEWS_ACCESSIBILITY_NATIVE_VIEW_ACCESSIBILITY_H_ 6 #define UI_VIEWS_ACCESSIBILITY_NATIVE_VIEW_ACCESSIBILITY_H_ 7 8 #include "ui/accessibility/ax_node_data.h" 9 #include "ui/accessibility/platform/ax_platform_node.h" 10 #include "ui/accessibility/platform/ax_platform_node_delegate.h" 11 #include "ui/gfx/native_widget_types.h" 12 #include "ui/views/views_export.h" 13 14 namespace views { 15 16 class View; 17 18 class VIEWS_EXPORT NativeViewAccessibility : public ui::AXPlatformNodeDelegate { 19 public: 20 static NativeViewAccessibility* Create(View* view); 21 22 virtual gfx::NativeViewAccessible GetNativeObject(); 23 24 // Call Destroy rather than deleting this, because the subclass may 25 // use reference counting. 26 virtual void Destroy(); 27 28 // WebViews need to be registered because they implement their own 29 // tree of accessibility objects, and we need to check them when 30 // mapping a child id to a NativeViewAccessible. 31 static void RegisterWebView(View* web_view); 32 static void UnregisterWebView(View* web_view); 33 34 // ui::AXPlatformNodeDelegate 35 virtual ui::AXNodeData* GetData() OVERRIDE; 36 virtual int GetChildCount() OVERRIDE; 37 virtual gfx::NativeViewAccessible ChildAtIndex(int index) OVERRIDE; 38 virtual gfx::NativeViewAccessible GetParent() OVERRIDE; 39 virtual gfx::Vector2d GetGlobalCoordinateOffset() OVERRIDE; 40 virtual void NotifyAccessibilityEvent(ui::AXEvent event_type) OVERRIDE; 41 42 protected: 43 NativeViewAccessibility(); 44 virtual ~NativeViewAccessibility(); 45 46 void set_view(views::View* view) { view_ = view; } 47 const View* view() const { return view_; } 48 49 View* view_; // Weak. Owns this. 50 51 private: 52 // We own this, but it is reference-counted on some platforms so we can't use 53 // a scoped_ptr. It is dereferenced in the destructor. 54 ui::AXPlatformNode* ax_node_; 55 56 ui::AXNodeData data_; 57 58 DISALLOW_COPY_AND_ASSIGN(NativeViewAccessibility); 59 }; 60 61 } // namespace views 62 63 #endif // UI_VIEWS_ACCESSIBILITY_NATIVE_VIEW_ACCESSIBILITY_H_ 64
