Added cursor navigation support for standard text fields and changed selection notifications so tha…

content/browser/accessibility/browser_accessibility_manager_mac.mm

 // 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/browser_accessibility_manager_mac.h"
 
 #include <stddef.h>
 
 #import "base/mac/mac_util.h"
 #import "base/mac/sdk_forward_declarations.h"
@@ skipping 165 matching lines @@
     case ui::AX_EVENT_SELECTED_CHILDREN_CHANGED:
       if (node->GetRole() == ui::AX_ROLE_GRID ||
           node->GetRole() == ui::AX_ROLE_TABLE) {
         mac_notification = NSAccessibilitySelectedRowsChangedNotification;
       } else {
         mac_notification = NSAccessibilitySelectedChildrenChangedNotification;
       }
       break;
     case ui::AX_EVENT_DOCUMENT_SELECTION_CHANGED: {
       mac_notification = NSAccessibilitySelectedTextChangedNotification;
+      // WebKit fires a notification both on the focused object and the root.
+      BrowserAccessibility* focus = GetFocus();
+      if (!focus)
+        break;
+      NSAccessibilityPostNotification(focus->ToBrowserAccessibilityCocoa(),
+                                      mac_notification);
+
       if (base::mac::IsOSElCapitanOrLater()) {
         // |NSAccessibilityPostNotificationWithUserInfo| should be used on OS X
         // 10.11 or later to notify Voiceover about text selection changes. This
         // API has been present on versions of OS X since 10.7 but doesn't
         // appear to be needed by Voiceover before version 10.11.
-        // WebKit fires a notification both on the focused object and the root.
         NSDictionary* user_info =
             GetUserInfoForSelectedTextChangedNotification();
 
-        BrowserAccessibility* focus = GetFocus();
-        if (!focus)
-          return;
-        NSAccessibilityPostNotificationWithUserInfo(
-            focus->ToBrowserAccessibilityCocoa(), mac_notification, user_info);
-
         BrowserAccessibility* root = GetRoot();
         if (!root)
           return;
+
+        NSAccessibilityPostNotificationWithUserInfo(
+            focus->ToBrowserAccessibilityCocoa(), mac_notification, user_info);
         NSAccessibilityPostNotificationWithUserInfo(
             root->ToBrowserAccessibilityCocoa(), mac_notification, user_info);
         return;
       }
       break;
     }
     case ui::AX_EVENT_CHECKED_STATE_CHANGED:
     case ui::AX_EVENT_VALUE_CHANGED:
       mac_notification = NSAccessibilityValueChangedNotification;
       break;
@@ skipping 107 matching lines @@
                     forKey:NSAccessibilitySelectedTextMarkerRangeAttribute];
       [user_info setObject:native_focus_object
                     forKey:NSAccessibilityTextChangeElement];
     }
   }
 
   return user_info;
 }
 
 }  // namespace content