Added basic accessibility to TreeView.

chrome/browser/accessibility/accessibility_events.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 "chrome/browser/accessibility/accessibility_events.h"
 
 #include "base/values.h"
 #include "chrome/browser/accessibility/accessibility_extension_api.h"
 #include "chrome/browser/accessibility/accessibility_extension_api_constants.h"
 #include "chrome/browser/chrome_notification_types.h"
@@ skipping 247 matching lines @@
   return keys::kTypeMenuItem;
 }
 
 void AccessibilityMenuItemInfo::SerializeToDict(DictionaryValue *dict) const {
   AccessibilityControlInfo::SerializeToDict(dict);
   dict->SetBoolean(keys::kHasSubmenuKey, has_submenu_);
   dict->SetInteger(keys::kItemIndexKey, item_index_);
   dict->SetInteger(keys::kItemCountKey, item_count_);
 }
 
+AccessibilityTreeInfo::AccessibilityTreeInfo(Profile* profile,
+                                             const std::string& menu_name)

[David Tseng, 2013/11/23 02:45:15]

nit: tree_name

+    : AccessibilityControlInfo(profile, menu_name) {
+}
+
+const char* AccessibilityTreeInfo::type() const {
+  return keys::kTypeTree;
+}
+
+AccessibilityTreeItemInfo::AccessibilityTreeItemInfo(Profile* profile,
+                                                     const std::string& name,
+                                                     const std::string& context,
+                                                     int item_depth,
+                                                     int item_index,
+                                                     int item_count,
+                                                     int children_count,
+                                                     bool is_expanded)
+    : AccessibilityControlInfo(profile, name),
+      item_depth_(item_depth),
+      item_index_(item_index),
+      item_count_(item_count),
+      children_count_(children_count),
+      is_expanded_(is_expanded) {
+  set_context(context);
+}
+
+const char* AccessibilityTreeItemInfo::type() const {
+  return keys::kTypeTreeItem;
+}
+
+void AccessibilityTreeItemInfo::SerializeToDict(DictionaryValue *dict) const {
+  AccessibilityControlInfo::SerializeToDict(dict);
+  dict->SetInteger(keys::kItemDepthKey, item_depth_);
+  dict->SetInteger(keys::kItemIndexKey, item_index_);
+  dict->SetInteger(keys::kItemCountKey, item_count_);
+  dict->SetInteger(keys::kChildrenCountKey, children_count_);
+  dict->SetBoolean(keys::kItemExpandedKey, is_expanded_);
+}
+
 AccessibilitySliderInfo::AccessibilitySliderInfo(Profile* profile,
                                                  const std::string& name,
                                                  const std::string& context,
                                                  const std::string& value)
     : AccessibilityControlInfo(profile, name),
       value_(value) {
   set_context(context);
 }
 
 const char* AccessibilitySliderInfo::type() const {
   return keys::kTypeSlider;
 }
 
 void AccessibilitySliderInfo::SerializeToDict(DictionaryValue *dict) const {
   AccessibilityControlInfo::SerializeToDict(dict);
   dict->SetString(keys::kStringValueKey, value_);
 }
 
 AccessibilityAlertInfo::AccessibilityAlertInfo(Profile* profile,
                                                const std::string& name)
     : AccessibilityControlInfo(profile, name) {
 }
 
 const char* AccessibilityAlertInfo::type() const {
   return keys::kTypeAlert;
 }