spatnav: Allow focus move to a close-by not-fully-aligned node over a distant but fully-aligned nod…

Source/core/page/FocusController.cpp

 /*
  * Copyright (C) 2006, 2007 Apple Inc. All rights reserved.
  * Copyright (C) 2008 Nuanti Ltd.
  *
  * 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
@@ skipping 728 matching lines @@
         return;
 
     // Ignore off screen child nodes of containers that do not scroll (overflow:hidden)
     if (candidate.isOffscreen && !canBeScrolledIntoView(type, candidate))
         return;
 
     distanceDataForNode(type, current, candidate);
     if (candidate.distance == maxDistance())
         return;
 
-    if (candidate.isOffscreenAfterScrolling && candidate.alignment < Full)
+    if (candidate.isOffscreenAfterScrolling)
         return;
 
     if (closest.isNull()) {
         closest = candidate;
         return;
     }
 
     LayoutRect intersectionRect = intersection(candidate.rect, closest.rect);
     if (!intersectionRect.isEmpty() && !areElementsOnSameLine(closest, candidate)
         && intersectionRect == candidate.rect) {
         // If 2 nodes are intersecting, do hit test to find which node in on top.
         LayoutUnit x = intersectionRect.x() + intersectionRect.width() / 2;
         LayoutUnit y = intersectionRect.y() + intersectionRect.height() / 2;
         if (!candidate.visibleNode->document().page()->mainFrame()->isLocalFrame())
             return;
         HitTestResult result = candidate.visibleNode->document().page()->deprecatedLocalMainFrame()->eventHandler().hitTestResultAtPoint(IntPoint(x, y), HitTestRequest::ReadOnly | HitTestRequest::Active | HitTestRequest::IgnoreClipping);
         if (candidate.visibleNode->contains(result.innerNode())) {
             closest = candidate;
             return;
         }
         if (closest.visibleNode->contains(result.innerNode()))
             return;
     }
 
-    if (candidate.alignment == closest.alignment) {
-        if (candidate.distance < closest.distance)
-            closest = candidate;
-        return;
-    }
-
-    if (candidate.alignment > closest.alignment)
+    if (candidate.distance < closest.distance)
         closest = candidate;
 }
 
 void FocusController::findFocusCandidateInContainer(Node& container, const LayoutRect& startingRect, FocusType type, FocusCandidate& closest)
 {
     Element* focusedElement = (focusedFrame() && toLocalFrame(focusedFrame())->document()) ? toLocalFrame(focusedFrame())->document()->focusedElement() : nullptr;
 
     Element* element = ElementTraversal::firstWithin(container);
     FocusCandidate current;
     current.rect = startingRect;
@@ skipping 131 matching lines @@
     return consumed;
 }
 
 void FocusController::trace(Visitor* visitor)
 {
     visitor->trace(m_page);
     visitor->trace(m_focusedFrame);
 }
 
 } // namespace blink