Selection follows focus/activedescendant in single selection containers

third_party/WebKit/Source/modules/accessibility/AXMenuListOption.cpp

 /*
  * Copyright (C) 2010 Apple Inc. All Rights Reserved.
  *
  * Redistribution and use in source and binary forms, with or without
  * modification, are permitted provided that the following conditions
  * are met:
  * 1. Redistributions of source code must retain the above copyright
  *    notice, this list of conditions and the following disclaimer.
  * 2. Redistributions in binary form must reproduce the above copyright
  *    notice, this list of conditions and the following disclaimer in the
  *    documentation and/or other materials provided with the distribution.
  *
  * THIS SOFTWARE IS PROVIDED BY APPLE INC. ``AS IS'' AND ANY
  * EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
  * PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL APPLE INC. OR
  * CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
  * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
  * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
  * PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY
  * OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
  * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
  * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
  */
 
 #include "modules/accessibility/AXMenuListOption.h"
 
 #include "SkMatrix44.h"
 #include "core/dom/AccessibleNode.h"
+#include "core/html/HTMLSelectElement.h"
 #include "modules/accessibility/AXMenuListPopup.h"
 #include "modules/accessibility/AXObjectCacheImpl.h"
 
 namespace blink {
 
 using namespace HTMLNames;
 
 AXMenuListOption::AXMenuListOption(HTMLOptionElement* element,
                                    AXObjectCacheImpl& ax_object_cache)
     : AXMockObject(ax_object_cache), element_(element) {}
@@ skipping 50 matching lines @@
   return element_ && element_->Selected();
 }
 
 void AXMenuListOption::SetSelected(bool b) {
   if (!element_ || !CanSetSelectedAttribute())
     return;
 
   element_->SetSelected(b);
 }
 
+bool AXMenuListOption::CanSetFocusAttribute() const {
+  return CanSetSelectedAttribute();
+}
+
 bool AXMenuListOption::CanSetSelectedAttribute() const {
+  if (!isHTMLOptionElement(GetNode()))
+    return false;
+
+  if (toHTMLOptionElement(GetNode())->IsDisabledFormControl())
+    return false;
+
+  HTMLSelectElement* select_element = ParentSelectNode();
+  if (!select_element || select_element->IsDisabledFormControl())
+    return false;
+
   return IsEnabled();
 }
 
 bool AXMenuListOption::ComputeAccessibilityIsIgnored(
     IgnoredReasons* ignored_reasons) const {
   return AccessibilityIsIgnoredByDefault(ignored_reasons);
 }
 
 void AXMenuListOption::GetRelativeBounds(
     AXObjectImpl** out_container,
@@ skipping 42 matching lines @@
   if (name_sources) {
     name_sources->push_back(NameSource(found_text_alternative));
     name_sources->back().type = name_from;
     name_sources->back().text = text_alternative;
     found_text_alternative = true;
   }
 
   return text_alternative;
 }
 
+HTMLSelectElement* AXMenuListOption::ParentSelectNode() const {
+  if (!GetNode())
+    return 0;
+
+  if (isHTMLOptionElement(GetNode()))
+    return toHTMLOptionElement(GetNode())->OwnerSelectElement();
+
+  return 0;
+}
+
 DEFINE_TRACE(AXMenuListOption) {
   visitor->Trace(element_);
   AXMockObject::Trace(visitor);
 }
 
 }  // namespace blink