Implemented the reporting of text style and language information on Windows.

content/browser/accessibility/accessibility_tree_formatter_win.cc

 // 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.
 
 #include "content/browser/accessibility/accessibility_tree_formatter.h"
 
 #include <oleacc.h>
 #include <stddef.h>
 #include <stdint.h>
 
@@ skipping 36 matching lines @@
   return new AccessibilityTreeFormatterWin();
 }
 
 AccessibilityTreeFormatterWin::AccessibilityTreeFormatterWin() {
   ui::win::CreateATLModuleIfNeeded();
 }
 
 AccessibilityTreeFormatterWin::~AccessibilityTreeFormatterWin() {
 }
 
-const char* ALL_ATTRIBUTES[] = {
-    "name",
-    "value",
-    "states",
-    "attributes",
-    "role_name",
-    "ia2_hypertext",
-    "currentValue",
-    "minimumValue",
-    "maximumValue",
-    "description",
-    "default_action",
-    "keyboard_shortcut",
-    "location",
-    "size",
-    "index_in_parent",
-    "n_relations",
-    "group_level",
-    "similar_items_in_group",
-    "position_in_group",
-    "table_rows",
-    "table_columns",
-    "row_index",
-    "column_index",
-    "n_characters",
-    "caret_offset",
-    "n_selections",
-    "selection_start",
-    "selection_end"
-};
+const char* ALL_ATTRIBUTES[] = {"name",
+                                "value",
+                                "states",
+                                "attributes",
+                                "text_attributes",
+                                "role_name",
+                                "ia2_hypertext",
+                                "currentValue",
+                                "minimumValue",
+                                "maximumValue",
+                                "description",
+                                "default_action",
+                                "keyboard_shortcut",
+                                "location",
+                                "size",
+                                "index_in_parent",
+                                "n_relations",
+                                "group_level",
+                                "similar_items_in_group",
+                                "position_in_group",
+                                "table_rows",
+                                "table_columns",
+                                "row_index",
+                                "column_index",
+                                "n_characters",
+                                "caret_offset",
+                                "n_selections",
+                                "selection_start",
+                                "selection_end"};
 
 namespace {
 
 base::string16 GetIA2Hypertext(BrowserAccessibilityWin& ax_object) {
   base::win::ScopedBstr text_bstr;
   HRESULT hr;
 
   hr = ax_object.get_text(0, IA2_TEXT_OFFSET_LENGTH, text_bstr.Receive());
   if (FAILED(hr))
     return base::string16();
@@ skipping 86 matching lines @@
   std::vector<base::string16> state_strings;
   int32_t ia_state = ax_object->ia_state();
 
   // Avoid flakiness: these states depend on whether the window is focused
   // and the position of the mouse cursor.
   ia_state &= ~STATE_SYSTEM_HOTTRACKED;
   ia_state &= ~STATE_SYSTEM_OFFSCREEN;
 
   IAccessibleStateToStringVector(ia_state, &state_strings);
   IAccessible2StateToStringVector(ax_object->ia2_state(), &state_strings);
-  base::ListValue* states = new base::ListValue;
-  for (const auto& state_string : state_strings)
+  scoped_ptr<base::ListValue> states(new base::ListValue());
+  for (const base::string16& state_string : state_strings)
     states->AppendString(base::UTF16ToUTF8(state_string));
-  dict->Set("states", states);
+  dict->Set("states", std::move(states));
 
   const std::vector<base::string16>& ia2_attributes =
       ax_object->ia2_attributes();
-  base::ListValue* attributes = new base::ListValue;
-  for (const auto& ia2_attribute : ia2_attributes)
+  scoped_ptr<base::ListValue> attributes(new base::ListValue());
+  for (const base::string16& ia2_attribute : ia2_attributes)
     attributes->AppendString(base::UTF16ToUTF8(ia2_attribute));
-  dict->Set("attributes", attributes);
+  dict->Set("attributes", std::move(attributes));
+
+  ax_object->ComputeStylesIfNeeded();
+  const std::map<int, std::vector<base::string16>>& ia2_text_attributes =
+      ax_object->offset_to_text_attributes();
+  scoped_ptr<base::ListValue> text_attributes(new base::ListValue());
+  for (const auto& style_span : ia2_text_attributes) {
+    int start_offset = style_span.first;
+    text_attributes->AppendString("offset:" + base::IntToString(start_offset));
+    for (const base::string16& text_attribute : style_span.second)
+      text_attributes->AppendString(base::UTF16ToUTF8(text_attribute));
+  }
+  dict->Set("text_attributes", std::move(text_attributes));
 
   dict->SetString("role_name", ax_object->role_name());
   dict->SetString("ia2_hypertext", GetIA2Hypertext(*ax_object));
 
   VARIANT currentValue;
   if (ax_object->get_currentValue(&currentValue) == S_OK)
     dict->SetDouble("currentValue", V_R8(&currentValue));
 
   VARIANT minimumValue;
   if (ax_object->get_minimumValue(&minimumValue) == S_OK)
@@ skipping 203 matching lines @@
 
 const std::string AccessibilityTreeFormatterWin::GetAllowString() {
   return "@WIN-ALLOW:";
 }
 
 const std::string AccessibilityTreeFormatterWin::GetDenyString() {
   return "@WIN-DENY:";
 }
 
 }  // namespace content