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 * Version: NPL 1.1/GPL 2.0/LGPL 2.1
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 * The contents of this file are subject to the Netscape Public License
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 * The Original Code is mozilla.org code.
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 * The Initial Developer of the Original Code is 
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 * Portions created by the Initial Developer are Copyright (C) 1998
 * the Initial Developer. All Rights Reserved.
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 * Contributor(s):
 *
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 * the GNU Lesser General Public License Version 2.1 or later (the "LGPL"),
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#ifndef NSFRAMETRAVERSAL_H
#define NSFRAMETRAVERSAL_H

#include "nsIEnumerator.h"
#include "nsIFrame.h"
#include "nsIFrameTraversal.h"

nsresult NS_NewFrameTraversal(nsIBidirectionalEnumerator **aEnumerator,
                              nsTraversalType aType,
                              nsIPresContext* aPresContext,
                              nsIFrame *aStart);

nsresult NS_CreateFrameTraversal(nsIFrameTraversal** aResult);

class nsFrameTraversal : public nsIFrameTraversal
{
public:
  nsFrameTraversal();
  virtual ~nsFrameTraversal();

  NS_DECL_ISUPPORTS

  NS_IMETHOD NewFrameTraversal(nsIBidirectionalEnumerator **aEnumerator,
                              PRUint32 aType,
                              nsIPresContext* aPresContext,
                              nsIFrame *aStart);
};

#endif //NSFRAMETRAVERSAL_H