Implemented SetSelection for the Web content on Windows.

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 725 matching lines @@
       const {
     return win_attributes_->offset_to_text_attributes;
   }
   std::map<int32_t, int32_t>& hyperlink_offset_to_index() const {
     return win_attributes_->hyperlink_offset_to_index;
   }
   std::vector<int32_t>& hyperlinks() const {
     return win_attributes_->hyperlinks;
   }
 
+ protected:
+  // |offset| could either be a text character or a child index in case of
+  // non-text objects.
+  AXPlatformPositionInstance CreatePositionAt(int offset) const override;
+
  private:
   // Returns the IA2 text attributes for this object.
   std::vector<base::string16> ComputeTextAttributes() const;
 
   // 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();
 
   // Returns a list of IA2 attributes indicating the offsets in the text of a
@@ skipping 20 matching lines @@
       BSTR* value_bstr);
 
   // Escapes characters in string attributes as required by the IA2 Spec.
   // It's okay for input to be the same as output.
   CONTENT_EXPORT static void SanitizeStringAttributeForIA2(
       const base::string16& input,
       base::string16* output);
   FRIEND_TEST_ALL_PREFIXES(BrowserAccessibilityTest,
                            TestSanitizeStringAttributeForIA2);
 
+  // Sets the selection given a start and end offset in IA2 Hypertext.
+  void SetIA2HypertextSelection(LONG start_offset, LONG end_offset);
+
   // If the string attribute |attribute| is present, add its value as an
   // IAccessible2 attribute with the name |ia2_attr|.
   void StringAttributeToIA2(ui::AXStringAttribute attribute,
                             const char* ia2_attr);
 
   // If the bool attribute |attribute| is present, add its value as an
   // IAccessible2 attribute with the name |ia2_attr|.
   void BoolAttributeToIA2(ui::AXBoolAttribute attribute,
                           const char* ia2_attr);
 
@@ skipping 55 matching lines @@
   // Get the value text, which might come from the floating-point
   // value for some roles.
   base::string16 GetValueText();
 
   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);
+  void HandleSpecialTextOffset(LONG* offset);
 
   // Convert from a IA2TextBoundaryType to a ui::TextBoundaryType.
   ui::TextBoundaryType IA2TextBoundaryToTextBoundary(IA2TextBoundaryType type);
 
   // Search forwards (direction == 1) or backwards (direction == -1)
   // from the given offset until the given boundary is found, and
   // return the offset of that boundary.
   LONG FindBoundary(const base::string16& text,
                     IA2TextBoundaryType ia2_boundary,
                     LONG start_offset,
@@ skipping 96 matching lines @@
 
 CONTENT_EXPORT BrowserAccessibilityWin*
 ToBrowserAccessibilityWin(BrowserAccessibility* obj);
 
 CONTENT_EXPORT const BrowserAccessibilityWin*
 ToBrowserAccessibilityWin(const BrowserAccessibility* obj);
 
 }  // namespace content
 
 #endif  // CONTENT_BROWSER_ACCESSIBILITY_BROWSER_ACCESSIBILITY_WIN_H_