WebFrame::selectRange and moveCaret should behave like mouse selection

Source/core/editing/VisibleSelection.cpp

 /*
  * Copyright (C) 2004, 2005, 2006 Apple Computer, 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/VisibleSelection.h"
 
 #include <stdio.h>
 #include "core/dom/Document.h"
 #include "core/dom/Element.h"
 #include "core/dom/Range.h"
 #include "core/editing/TextIterator.h"
 #include "core/editing/VisiblePosition.h"
 #include "core/editing/VisibleUnits.h"
 #include "core/editing/htmlediting.h"
+#include "core/platform/graphics/LayoutPoint.h"
+#include "core/rendering/RenderObject.h"
 #include <wtf/Assertions.h>
 #include <wtf/text/CString.h>
 #include <wtf/text/StringBuilder.h>
 #include <wtf/unicode/CharacterNames.h>
 
 namespace WebCore {
 
 VisibleSelection::VisibleSelection()
     : m_affinity(DOWNSTREAM)
     , m_selectionType(NoSelection)
@@ skipping 570 matching lines @@
             }
             m_start = next.deepEquivalent();
         }
     }
     
     // Correct the extent if necessary.
     if (baseEditableAncestor != lowestEditableAncestor(m_extent.containerNode()))
         m_extent = m_baseIsFirst ? m_end : m_start;
 }
 
+VisiblePosition VisibleSelection::visiblePositionRespectingEditingBoundary(const LayoutPoint& localPoint, Node* targetNode) const
+{
+    if (!targetNode->renderer())
+        return VisiblePosition();
+
+    LayoutPoint selectionEndPoint = localPoint;
+    Element* editableElement = rootEditableElement();
+
+    if (editableElement && !editableElement->contains(targetNode)) {
+        if (!editableElement->renderer())
+            return VisiblePosition();
+
+        FloatPoint absolutePoint = targetNode->renderer()->localToAbsolute(FloatPoint(selectionEndPoint));
+        selectionEndPoint = roundedLayoutPoint(editableElement->renderer()->absoluteToLocal(absolutePoint));
+        targetNode = editableElement;
+    }
+
+    return targetNode->renderer()->positionForPoint(selectionEndPoint);
+}
+
+
 bool VisibleSelection::isContentEditable() const
 {
     return isEditablePosition(start());
 }
 
 bool VisibleSelection::rendererIsEditable() const
 {
     return isEditablePosition(start(), ContentIsEditable, DoNotUpdateStyle);
 }
 
@@ skipping 76 matching lines @@
     sel.showTreeForThis();
 }
 
 void showTree(const WebCore::VisibleSelection* sel)
 {
     if (sel)
         sel->showTreeForThis();
 }
 
 #endif