Fire accessibility focus/blur events on root web document.

content/browser/accessibility/browser_accessibility_manager_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/browser_accessibility_manager_win.h"
 
 #include "base/command_line.h"
 #include "base/win/scoped_comptr.h"
 #include "base/win/windows_version.h"
 #include "content/browser/accessibility/browser_accessibility_state_impl.h"
@@ skipping 79 matching lines @@
 void BrowserAccessibilityManagerWin::RemoveNode(BrowserAccessibility* node) {
   unique_id_to_renderer_id_map_.erase(
       node->ToBrowserAccessibilityWin()->unique_id_win());
   BrowserAccessibilityManager::RemoveNode(node);
   if (node == tracked_scroll_object_) {
     tracked_scroll_object_->Release();
     tracked_scroll_object_ = NULL;
   }
 }
 
+void BrowserAccessibilityManagerWin::OnWindowFocused() {
+  if (focus_ != root_)
+    NotifyAccessibilityEvent(ui::AX_EVENT_FOCUS, root_);
+  BrowserAccessibilityManager::OnWindowFocused();

[David Tseng, 2014/04/02 22:05:05]

Does ordering matter here? If I were a client, I may expect to see the root
focused first, then the descendant node focused.

[dmazzoni, 2014/04/02 22:09:55]

Yes, that's the order you'll get: first root, then the descendant (fired by the
parent class).

+}
+
+void BrowserAccessibilityManagerWin::OnWindowBlurred() {
+  if (focus_ != root_)

[David Tseng, 2014/04/02 22:19:51]

Sorry; this was the one I meant to comment on; seems we should blur the focused
node first then the root right?

+    NotifyAccessibilityEvent(ui::AX_EVENT_BLUR, root_);
+  BrowserAccessibilityManager::OnWindowBlurred();
+}
+
 void BrowserAccessibilityManagerWin::NotifyAccessibilityEvent(
     ui::AXEvent event_type,
     BrowserAccessibility* node) {
   if (node->role() == ui::AX_ROLE_INLINE_TEXT_BOX)
     return;
 
   LONG event_id = EVENT_MIN;
   switch (event_type) {
     case ui::AX_EVENT_ACTIVEDESCENDANTCHANGED:
       event_id = IA2_EVENT_ACTIVE_DESCENDANT_CHANGED;
@@ skipping 123 matching lines @@
   // |parent_iaccessible_| are no longer valid either, since they were
   // derived from AccessibleHWND. We don't have to restore them to
   // previous values, though, because this should only happen
   // during the destruct sequence for this window.
   accessible_hwnd_ = NULL;
   parent_hwnd_ = NULL;
   parent_iaccessible_ = NULL;
 }
 
 }  // namespace content