content/renderer/accessibility/blink_ax_tree_source.h

   1 // Copyright 2014 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 CONTENT_RENDERER_ACCESSIBILITY_BLINK_AX_TREE_SOURCE_H_
   6 #define CONTENT_RENDERER_ACCESSIBILITY_BLINK_AX_TREE_SOURCE_H_
   7
   8 #include "third_party/WebKit/public/web/WebAXObject.h"
   9 #include "ui/accessibility/ax_node_data.h"
  10 #include "ui/accessibility/ax_tree_source.h"
  11
  12 namespace content {
  13
  14 class RenderFrameImpl;
  15
  16 class BlinkAXTreeSource
  17     : public ui::AXTreeSource<blink::WebAXObject> {
  18  public:
  19   BlinkAXTreeSource(RenderFrameImpl* render_frame);
  20   virtual ~BlinkAXTreeSource();
  21
  22   // Walks up the ancestor chain to see if this is a descendant of the root.
  23   bool IsInTree(blink::WebAXObject node) const;
  24
  25   // AXTreeSource implementation.
  26   virtual blink::WebAXObject GetRoot() const OVERRIDE;
  27   virtual blink::WebAXObject GetFromId(int32 id) const OVERRIDE;
  28   virtual int32 GetId(blink::WebAXObject node) const OVERRIDE;
  29   virtual void GetChildren(
  30       blink::WebAXObject node,
  31       std::vector<blink::WebAXObject>* out_children) const OVERRIDE;
  32   virtual blink::WebAXObject GetParent(blink::WebAXObject node) const
  33       OVERRIDE;
  34   virtual void SerializeNode(blink::WebAXObject node,
  35                              ui::AXNodeData* out_data) const OVERRIDE;
  36   virtual bool IsValid(blink::WebAXObject node) const OVERRIDE;
  37   virtual bool IsEqual(blink::WebAXObject node1,
  38                        blink::WebAXObject node2) const OVERRIDE;
  39   virtual blink::WebAXObject GetNull() const OVERRIDE;
  40
  41   blink::WebDocument GetMainDocument() const;
  42
  43  private:
  44   RenderFrameImpl* render_frame_;
  45 };
  46
  47 }  // namespace content
  48
  49 #endif  // CONTENT_RENDERER_ACCESSIBILITY_BLINK_AX_TREE_SOURCE_H_