Fire AX text inserted event when embedded obj char changes.

content/browser/accessibility/browser_accessibility_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_WIN_H_
 #define CONTENT_BROWSER_ACCESSIBILITY_BROWSER_ACCESSIBILITY_WIN_H_
 
 #include <atlbase.h>
 #include <atlcom.h>
 #include <oleacc.h>
@@ skipping 64 matching lines @@
     COM_INTERFACE_ENTRY(IRawElementProviderSimple)
     COM_INTERFACE_ENTRY(IServiceProvider)
     COM_INTERFACE_ENTRY(ISimpleDOMDocument)
     COM_INTERFACE_ENTRY(ISimpleDOMNode)
     COM_INTERFACE_ENTRY(ISimpleDOMText)
   END_COM_MAP()
 
   // Represents a non-static text node in IAccessibleHypertext. This character
   // is embedded in the response to IAccessibleText::get_text, indicating the
   // position where a non-static text child object appears.
-  CONTENT_EXPORT static const base::char16 kEmbeddedCharacter[];
+  CONTENT_EXPORT static const base::char16 kEmbeddedCharacter;
 
   // Mappings from roles and states to human readable strings. Initialize
   // with |InitializeStringMaps|.
   static std::map<int32, base::string16> role_string_map;
   static std::map<int32, base::string16> state_string_map;
 
   CONTENT_EXPORT BrowserAccessibilityWin();
 
   CONTENT_EXPORT virtual ~BrowserAccessibilityWin();
 
   // The Windows-specific unique ID, used as the child ID for MSAA methods
   // like NotifyWinEvent, and as the unique ID for IAccessible2 and ISimpleDOM.
   LONG unique_id_win() const { return unique_id_win_; }
 
-  CONTENT_EXPORT void UpdateIAccessibleText();
+  // Called after an atomic tree update completes. See
+  // BrowserAccessibilityManagerWin::OnAtomicUpdateFinished for more
+  // details on what these do.
+  CONTENT_EXPORT void UpdateStep1ComputeWinAttributes();
+  CONTENT_EXPORT void UpdateStep2ComputeHypertext();
+  CONTENT_EXPORT void UpdateStep3FireEvents(bool is_subtree_creation);
+  CONTENT_EXPORT void UpdateStep4DeleteOldWinAttributes();
 
   //
   // BrowserAccessibility methods.
   //
-  CONTENT_EXPORT virtual void OnDataChanged() override;
-  CONTENT_EXPORT virtual void OnUpdateFinished() override;
   CONTENT_EXPORT virtual void OnSubtreeWillBeDeleted() override;
-  CONTENT_EXPORT virtual void OnSubtreeCreationFinished() override;
   CONTENT_EXPORT virtual void NativeAddReference() override;
   CONTENT_EXPORT virtual void NativeReleaseReference() override;
   CONTENT_EXPORT virtual bool IsNative() const override;
   CONTENT_EXPORT virtual void OnLocationChanged() override;
 
   //
   // IAccessible methods.
   //
 
   // Performs the default action on a given object.
@@ skipping 665 matching lines @@
   const base::string16& role_name() const { return win_attributes_->role_name; }
   int32 ia2_role() const { return win_attributes_->ia2_role; }
   int32 ia2_state() const { return win_attributes_->ia2_state; }
   const std::vector<base::string16>& ia2_attributes() const {
     return win_attributes_->ia2_attributes;
   }
   base::string16 name() const { return win_attributes_->name; }
   base::string16 description() const { return win_attributes_->description; }
   base::string16 help() const { return win_attributes_->help; }
   base::string16 value() const { return win_attributes_->value; }
+  base::string16 hypertext() const { return win_attributes_->hypertext; }
+  std::map<int32, int32>& hyperlink_offset_to_index() const {
+    return win_attributes_->hyperlink_offset_to_index;
+  }
+  std::vector<int32>& hyperlinks() const { return win_attributes_->hyperlinks; }
 
  private:
   // Add one to the reference count and return the same object. Always
   // use this method when returning a BrowserAccessibilityWin object as
   // an output parameter to a COM interface, never use it otherwise.
   BrowserAccessibilityWin* NewReference();
 
   // Many MSAA methods take a var_id parameter indicating that the operation
   // should be performed on a particular child ID, rather than this object.
   // This method tries to figure out the target object from |var_id| and
@@ skipping 31 matching lines @@
   base::string16 GetNameRecursive() const;
 
   // Get the value text, which might come from the floating-point
   // value for some roles.
   base::string16 GetValueText();
 
   // Get the text of this node for the purposes of IAccessibleText - it may
   // be the name, it may be the value, etc. depending on the role.
   base::string16 TextForIAccessibleText();
 
+  bool IsSameHypertextCharacter(size_t old_char_index, size_t new_char_index);
   void ComputeHypertextRemovedAndInserted(
       int* start, int* old_len, int* new_len);
 
   // If offset is a member of IA2TextSpecialOffsets this function updates the
   // value of offset and returns, otherwise offset remains unchanged.
   void HandleSpecialTextOffset(const base::string16& text, LONG* offset);
 
   // Convert from a IA2TextBoundaryType to a ui::TextBoundaryType.
   ui::TextBoundaryType IA2TextBoundaryToTextBoundary(IA2TextBoundaryType type);
 
@@ skipping 27 matching lines @@
     base::string16 description;
     base::string16 help;
     base::string16 value;
 
     // IAccessible2 role and state.
     int32 ia2_role;
     int32 ia2_state;
 
     // IAccessible2 attributes.
     std::vector<base::string16> ia2_attributes;
+
+    // Hypertext.
+    base::string16 hypertext;
+
+    // Maps the |hypertext_| embedded character offset to an index in
+    // |hyperlinks_|.
+    std::map<int32, int32> hyperlink_offset_to_index;
+
+    // The id of a BrowserAccessibilityWin for each hyperlink.
+    std::vector<int32> hyperlinks;
   };
 
   scoped_ptr<WinAttributes> win_attributes_;
 
   // Only valid during the scope of a IA2_EVENT_TEXT_REMOVED or
   // IA2_EVENT_TEXT_INSERTED event.
   scoped_ptr<WinAttributes> old_win_attributes_;
 
   // Relationships between this node and other nodes.
   std::vector<BrowserAccessibilityRelation*> relations_;
 
-  // IAccessibleText text of this node including
-  // embedded hyperlink characters.
-  base::string16 old_hypertext_;
-  base::string16 hypertext_;
-
-  // Maps the |hypertext_| embedded character offset to an index in
-  // |hyperlinks_|.
-  std::map<int32, int32> hyperlink_offset_to_index_;
-
-  // Collection of non-static text child indicies, each of which corresponds to
-  // a hyperlink.
-  std::vector<int32> hyperlinks_;
-
   // The previous scroll position, so we can tell if this object scrolled.
   int previous_scroll_x_;
   int previous_scroll_y_;
 
   // The next unique id to use.
   static LONG next_unique_id_win_;
 
   // Give BrowserAccessibility::Create access to our constructor.
   friend class BrowserAccessibility;
   friend class BrowserAccessibilityRelation;
 
   DISALLOW_COPY_AND_ASSIGN(BrowserAccessibilityWin);
 };
 
 }  // namespace content
 
 #endif  // CONTENT_BROWSER_ACCESSIBILITY_BROWSER_ACCESSIBILITY_WIN_H_