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 // Call this to have BlinkAXTreeSource collect a mapping from 23 // node ids to the frame routing id for an out-of-process iframe during 24 // calls to SerializeNode. 25 void CollectChildFrameIdMapping( 26 std::map<int32, int>* node_to_frame_routing_id_map, 27 std::map<int32, int>* node_to_browser_plugin_instance_id_map); 28 29 // Walks up the ancestor chain to see if this is a descendant of the root. 30 bool IsInTree(blink::WebAXObject node) const; 31 32 // AXTreeSource implementation. 33 virtual blink::WebAXObject GetRoot() const OVERRIDE; 34 virtual blink::WebAXObject GetFromId(int32 id) const OVERRIDE; 35 virtual int32 GetId(blink::WebAXObject node) const OVERRIDE; 36 virtual void GetChildren( 37 blink::WebAXObject node, 38 std::vector<blink::WebAXObject>* out_children) const OVERRIDE; 39 virtual blink::WebAXObject GetParent(blink::WebAXObject node) const 40 OVERRIDE; 41 virtual void SerializeNode(blink::WebAXObject node, 42 ui::AXNodeData* out_data) const OVERRIDE; 43 virtual bool IsValid(blink::WebAXObject node) const OVERRIDE; 44 virtual bool IsEqual(blink::WebAXObject node1, 45 blink::WebAXObject node2) const OVERRIDE; 46 virtual blink::WebAXObject GetNull() const OVERRIDE; 47 48 blink::WebDocument GetMainDocument() const; 49 50 private: 51 RenderFrameImpl* render_frame_; 52 std::map<int32, int>* node_to_frame_routing_id_map_; 53 std::map<int32, int>* node_to_browser_plugin_instance_id_map_; 54 }; 55 56 } // namespace content 57 58 #endif // CONTENT_RENDERER_ACCESSIBILITY_BLINK_AX_TREE_SOURCE_H_ 59