MacViews: Accessibility bridge

ui/accessibility/platform/ax_platform_node_delegate.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_ACCESSIBILITY_PLATFORM_AX_PLATFORM_NODE_DELEGATE_H_
+#define UI_ACCESSIBILITY_PLATFORM_AX_PLATFORM_NODE_DELEGATE_H_
+
+#include "ui/accessibility/ax_enums.h"
+#include "ui/accessibility/ax_export.h"
+#include "ui/gfx/geometry/vector2d.h"
+#include "ui/gfx/native_widget_types.h"
+
+namespace ui {
+
+struct AXNodeData;
+class AXPlatformNode;
+
+class AX_EXPORT AXPlatformNodeDelegate {
+ public:
+  // Get the accessibility data that should be exposed for this node.
+  virtual AXNodeData* GetData() = 0;
+
+  // Get the parent of the node unless it's the root, then it returns NULL.
+  virtual gfx::NativeViewAccessible GetParent() = 0;
+
+  // Get the number of children of this node.
+  virtual int GetChildCount() = 0;
+
+  // Get the child of a node from [0...GetChildCount() - 1]
+  virtual gfx::NativeViewAccessible ChildAtIndex(int index) = 0;
+
+  // Get the offset to convert local coordinates to screen global coordinates.
+  virtual gfx::Vector2d GetGlobalCoordinateOffset() = 0;
+
+  //
+  // Events.
+  //
+  virtual void NotifyAccessibilityEvent(ui::AXEvent event_type) = 0;
+
+};
+
+}  // namespace ui
+
+#endif  // UI_ACCESSIBILITY_PLATFORM_AX_PLATFORM_NODE_DELEGATE_H_