Support additional webkit accessibility notifications and states.

chrome/browser/renderer_host/render_widget_host_view_win.cc

 // Copyright (c) 2010 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/renderer_host/render_widget_host_view_win.h"
 
 #include "app/l10n_util.h"
 #include "app/l10n_util_win.h"
 #include "app/resource_bundle.h"
 #include "base/command_line.h"
@@ skipping 1459 matching lines @@
         child_window = ::GetWindow(child_window, GW_CHILD);
 
       ::SetFocus(child_window);
       return MA_NOACTIVATE;
     }
   }
   handled = FALSE;
   return MA_ACTIVATE;
 }
 
-void RenderWidgetHostViewWin::UpdateAccessibilityTree(
-    const webkit_glue::WebAccessibility& tree) {
-  browser_accessibility_manager_.reset(
-      new BrowserAccessibilityManager(m_hWnd, tree, this));
-
-  BrowserAccessibility* root = browser_accessibility_manager_.get()->GetRoot();
-  LONG root_id;
-  if (root && SUCCEEDED(root->get_uniqueID(&root_id))) {
-    ::NotifyWinEvent(
-        EVENT_OBJECT_FOCUS, m_hWnd, OBJID_CLIENT, root_id);
-    ::NotifyWinEvent(
-        IA2_EVENT_DOCUMENT_LOAD_COMPLETE, m_hWnd, OBJID_CLIENT, root_id);
-  }
-}
-
-void RenderWidgetHostViewWin::OnAccessibilityFocusChange(int acc_obj_id) {
-  if (browser_accessibility_manager_.get()) {
-    browser_accessibility_manager_->OnAccessibilityFocusChange(acc_obj_id);
-  }
-}
-
 void RenderWidgetHostViewWin::OnAccessibilityNotifications(
     const std::vector<ViewHostMsg_AccessibilityNotification_Params>& params) {
-  if (browser_accessibility_manager_.get())
-    browser_accessibility_manager_->OnAccessibilityNotifications(params);
+  if (!browser_accessibility_manager_.get()) {
+    // Use empty document to process notifications
+    webkit_glue::WebAccessibility empty_document;
+    empty_document.role = WebAccessibility::ROLE_DOCUMENT;
+    empty_document.state = 0;
+    browser_accessibility_manager_.reset(
+        new BrowserAccessibilityManager(m_hWnd, empty_document, this));
+  }
+
+  browser_accessibility_manager_->OnAccessibilityNotifications(params);
 }
 
 void RenderWidgetHostViewWin::Observe(NotificationType type,
                                       const NotificationSource& source,
                                       const NotificationDetails& details) {
   DCHECK(type == NotificationType::RENDERER_PROCESS_TERMINATED);
 
   // Get the RenderProcessHost that posted this notification, and exit
   // if it's not the one associated with this host view.
   RenderProcessHost* render_process_host =
@@ skipping 183 matching lines @@
     RenderWidgetHostView::GetRenderWidgetHostViewFromNativeView(
         gfx::NativeView native_view) {
   if (::IsWindow(native_view)) {
     HANDLE raw_render_host_view = ::GetProp(native_view,
                                             kRenderWidgetHostViewKey);
     if (raw_render_host_view)
       return reinterpret_cast<RenderWidgetHostView*>(raw_render_host_view);
   }
   return NULL;
 }