Improving direction-based selection strategy.

Source/core/editing/VisibleUnits.cpp

 /*
  * Copyright (C) 2004, 2005, 2006, 2007, 2008, 2009 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
@@ skipping 16 matching lines @@
 #include "core/editing/VisibleUnits.h"
 
 #include "bindings/core/v8/ExceptionState.h"
 #include "bindings/core/v8/ExceptionStatePlaceholder.h"
 #include "core/HTMLNames.h"
 #include "core/dom/Document.h"
 #include "core/dom/Element.h"
 #include "core/dom/NodeTraversal.h"
 #include "core/dom/Position.h"
 #include "core/dom/Text.h"
+#include "core/editing/FrameSelection.h"
 #include "core/editing/RenderedPosition.h"
 #include "core/editing/VisiblePosition.h"
 #include "core/editing/htmlediting.h"
 #include "core/editing/iterators/BackwardsCharacterIterator.h"
 #include "core/editing/iterators/CharacterIterator.h"
 #include "core/editing/iterators/SimplifiedBackwardsTextIterator.h"
 #include "core/editing/iterators/TextIterator.h"
 #include "core/html/HTMLBRElement.h"
+#include "core/layout/HitTestRequest.h"
+#include "core/layout/HitTestResult.h"
 #include "core/layout/LayoutBlockFlow.h"
 #include "core/layout/LayoutObject.h"
+#include "core/layout/LayoutView.h"
 #include "core/layout/line/InlineTextBox.h"
+#include "core/paint/DeprecatedPaintLayer.h"
 #include "platform/RuntimeEnabledFeatures.h"
 #include "platform/heap/Handle.h"
 #include "platform/text/TextBoundaries.h"
 
 namespace blink {
 
 using namespace HTMLNames;
 using namespace WTF::Unicode;
 
 static Node* previousLeafWithSameEditability(Node* node, EditableType editableType)
@@ skipping 1347 matching lines @@
     InlineBox* inlineBox;
     int caretOffset;
     position.position().getInlineBoxAndOffset(position.affinity(), inlineBox, caretOffset);
 
     if (inlineBox)
         layoutObject = &inlineBox->layoutObject();
 
     return layoutObject->localCaretRect(inlineBox, caretOffset);
 }
 
+VisiblePosition visiblePositionForContentsPoint(const IntPoint& contentsPoint, LocalFrame* frame)
+{
+    HitTestRequest request = HitTestRequest::Move | HitTestRequest::ReadOnly | HitTestRequest::Active | HitTestRequest::IgnoreClipping;
+    HitTestResult result(request, contentsPoint);
+    frame->document()->layoutView()->hitTest(result);
+
+    if (Node* node = result.innerNode())
+        return frame->selection().selection().visiblePositionRespectingEditingBoundary(result.localPoint(), node);
+    return VisiblePosition();
 }
+
+}