Fire an accessible click event when a web node is clicked on.

third_party/WebKit/Source/core/events/EventDispatcher.cpp

 /*
  * Copyright (C) 1999 Lars Knoll (knoll@kde.org)
  *           (C) 1999 Antti Koivisto (koivisto@kde.org)
  *           (C) 2001 Dirk Mueller (mueller@kde.org)
  * Copyright (C) 2004, 2005, 2006, 2007, 2008, 2009, 2010, 2011 Apple Inc. All rights reserved.
  * Copyright (C) 2008 Nokia Corporation and/or its subsidiary(-ies)
  * Copyright (C) 2009 Torch Mobile Inc. All rights reserved. (http://www.torchmobile.com/)
  * Copyright (C) 2011 Google Inc. All rights reserved.
  *
  * This library is free software; you can redistribute it and/or
@@ skipping 184 matching lines @@
 
 inline void EventDispatcher::dispatchEventPostProcess(void* preDispatchEventHandlerResult)
 {
     m_event->setTarget(EventPath::eventTargetRespectingTargetRules(*m_node));
     m_event->setCurrentTarget(nullptr);
     m_event->setEventPhase(0);
 
     // Pass the data from the preDispatchEventHandler to the postDispatchEventHandler.
     m_node->postDispatchEventHandler(m_event.get(), preDispatchEventHandlerResult);
 
+    bool isClick = m_event->isMouseEvent() && toMouseEvent(*m_event).type() == EventTypeNames::click;
+    if (isClick) {
+        // Fire an accessibility event indicating a node was clicked on.  This is safe if m_event->target()->toNode() returns null.
+        if (AXObjectCache* cache = m_node->document().existingAXObjectCache())
+            cache->handleClicked(m_event->target()->toNode());
+    }
+
     // The DOM Events spec says that events dispatched by JS (other than "click")
     // should not have their default handlers invoked.
-    bool isTrustedOrClick = !RuntimeEnabledFeatures::trustedEventsDefaultActionEnabled() || m_event->isTrusted() || (m_event->isMouseEvent() && toMouseEvent(*m_event).type() == EventTypeNames::click);
+    bool isTrustedOrClick = !RuntimeEnabledFeatures::trustedEventsDefaultActionEnabled() || m_event->isTrusted() || isClick;
 
     // Call default event handlers. While the DOM does have a concept of preventing
     // default handling, the detail of which handlers are called is an internal
     // implementation detail and not part of the DOM.
     if (!m_event->defaultPrevented() && !m_event->defaultHandled() && isTrustedOrClick) {
         // Non-bubbling events call only one default event handler, the one for the target.
         m_node->willCallDefaultEventHandler(*m_event);
         m_node->defaultEventHandler(m_event.get());
         ASSERT(!m_event->defaultPrevented());
         if (m_event->defaultHandled())
             return;
         // For bubbling events, call default event handlers on the same targets in the
         // same order as the bubbling phase.
         if (m_event->bubbles()) {
             size_t size = m_event->eventPath().size();
             for (size_t i = 1; i < size; ++i) {
                 m_event->eventPath()[i].node()->willCallDefaultEventHandler(*m_event);
                 m_event->eventPath()[i].node()->defaultEventHandler(m_event.get());
                 ASSERT(!m_event->defaultPrevented());
                 if (m_event->defaultHandled())
                     return;
             }
         }
     }
 }
 
 } // namespace blink