Implementation of CSS3 nav-up/down/left/right properties from CSS3 UI.

Source/core/page/EventHandler.cpp

 /*
  * Copyright (C) 2006, 2007, 2008, 2009, 2010, 2011 Apple Inc. All rights reserved.
  * Copyright (C) 2006 Alexey Proskuryakov (ap@webkit.org)
  * Copyright (C) 2012 Digia Plc. and/or its subsidiary(-ies)
  *
  * 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.
@@ skipping 3439 matching lines @@
         return;
     if (!page->tabKeyCyclesThroughElements())
         return;
 
     FocusDirection focusDirection = event->shiftKey() ? FocusDirectionBackward : FocusDirectionForward;
 
     // Tabs can be used in design mode editing.
     if (m_frame->document()->inDesignMode())
         return;
 
+    if (page->focusController()->handleCSSFocusNavigation(focusDirection))
+        return;

[esprehn, 2013/06/20 19:45:10]

Hmm, why doesn't this need to do setDefaultHandled? Should this be inside
advanceFocus?

[Krzysztof Olczyk, 2013/07/22 14:14:16]

Just an omission. Done.

+
     if (page->focusController()->advanceFocus(focusDirection, event))
         event->setDefaultHandled();
 }
 
 void EventHandler::capsLockStateMayHaveChanged()
 {
     Document* d = m_frame->document();
     if (Node* node = d->focusedNode()) {
         if (RenderObject* r = node->renderer()) {
             if (r->isTextField())
@@ skipping 390 matching lines @@
 unsigned EventHandler::accessKeyModifiers()
 {
 #if OS(DARWIN)
     return PlatformEvent::CtrlKey | PlatformEvent::AltKey;
 #else
     return PlatformEvent::AltKey;
 #endif
 }
 
 } // namespace WebCore