WebFrame::selectRange and moveCaret should behave like mouse selection

Source/core/editing/VisibleSelection.h

 /*
  * Copyright (C) 2004 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 13 matching lines @@
  */
 
 #ifndef VisibleSelection_h
 #define VisibleSelection_h
 
 #include "core/editing/TextGranularity.h"
 #include "core/editing/VisiblePosition.h"
 
 namespace WebCore {
 
+class LayoutPoint;
 class Position;
 
 const EAffinity SEL_DEFAULT_AFFINITY = DOWNSTREAM;
 enum SelectionDirection { DirectionForward, DirectionBackward, DirectionRight, DirectionLeft };
 
 class VisibleSelection {
 public:
     enum SelectionType { NoSelection, CaretSelection, RangeSelection };
 
     VisibleSelection();
@@ skipping 54 matching lines @@
     PassRefPtr<Range> toNormalizedRange() const;
     
     Element* rootEditableElement() const;
     bool isContentEditable() const;
     bool rendererIsEditable() const;
     bool isContentRichlyEditable() const;
     // Returns a shadow tree node for legacy shadow trees, a child of the
     // ShadowRoot node for new shadow trees, or 0 for non-shadow trees.
     Node* nonBoundaryShadowTreeRootNode() const;
 
+    VisiblePosition visiblePositionRespectingEditingBoundary(const LayoutPoint& localPoint, Node* targetNode) const;
+
+
 #ifndef NDEBUG
     void debugPosition() const;
     void formatForDebugger(char* buffer, unsigned length) const;
     void showTreeForThis() const;
 #endif
 
     void setWithoutValidation(const Position&, const Position&);
 
 private:
     void validate(TextGranularity = CharacterGranularity);
@@ skipping 36 matching lines @@
 
 } // namespace WebCore
 
 #ifndef NDEBUG
 // Outside the WebCore namespace for ease of invocation from gdb.
 void showTree(const WebCore::VisibleSelection&);
 void showTree(const WebCore::VisibleSelection*);
 #endif
 
 #endif // VisibleSelection_h