Automatically fire AX events on Win based on tree changes

content/browser/accessibility/browser_accessibility_manager_win.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 CONTENT_BROWSER_ACCESSIBILITY_BROWSER_ACCESSIBILITY_MANAGER_WIN_H_
 #define CONTENT_BROWSER_ACCESSIBILITY_BROWSER_ACCESSIBILITY_MANAGER_WIN_H_
 
 #include <oleacc.h>
 
 #include <memory>
@@ skipping 48 matching lines @@
   // Track this object and post a VISIBLE_DATA_CHANGED notification when
   // its container scrolls.
   // TODO(dmazzoni): remove once http://crbug.com/113483 is fixed.
   void TrackScrollingObject(BrowserAccessibilityWin* node);
 
   // Called when |accessible_hwnd_| is deleted by its parent.
   void OnAccessibleHwndDeleted();
 
  protected:
   // AXTreeDelegate methods.
+  void OnTreeDataChanged(ui::AXTree* tree,
+                         const ui::AXTreeData& old_tree_data,
+                         const ui::AXTreeData& new_tree_data) override;
   void OnNodeCreated(ui::AXTree* tree, ui::AXNode* node) override;
+  void OnNodeDataWillChange(ui::AXTree* tree,
+                            const ui::AXNodeData& old_node_data,
+                            const ui::AXNodeData& new_node_data) override;
+  void OnStateChanged(ui::AXTree* tree,
+                      ui::AXNode* node,
+                      ui::AXState state,
+                      bool new_value) override;
+  void OnIntAttributeChanged(ui::AXTree* tree,
+                             ui::AXNode* node,
+                             ui::AXIntAttribute attr,
+                             int32_t old_value,
+                             int32_t new_value) override;
   void OnAtomicUpdateFinished(
       ui::AXTree* tree,
       bool root_changed,
       const std::vector<ui::AXTreeDelegate::Change>& changes) override;
 
  private:
   // Give BrowserAccessibilityManager::Create access to our constructor.
   friend class BrowserAccessibilityManager;
 
   // Keep track of if we got a "load complete" event but were unable to fire
   // it because of no HWND, because otherwise JAWS can get very confused.
   // TODO(dmazzoni): a better fix would be to always have an HWND.
   // http://crbug.com/521877
   bool load_complete_pending_;
 
   DISALLOW_COPY_AND_ASSIGN(BrowserAccessibilityManagerWin);
 };
 
 }  // namespace content
 
 #endif  // CONTENT_BROWSER_ACCESSIBILITY_BROWSER_ACCESSIBILITY_MANAGER_WIN_H_