/* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*-
 *
 * The contents of this file are subject to the Netscape Public
 * License Version 1.1 (the "License"); you may not use this file
 * except in compliance with the License. You may obtain a copy of
 * the License at http://www.mozilla.org/NPL/
 *
 * Software distributed under the License is distributed on an "AS
 * IS" basis, WITHOUT WARRANTY OF ANY KIND, either express or
 * implied. See the License for the specific language governing
 * rights and limitations under the License.
 *
 * The Original Code is mozilla.org code.
 *
 * The Initial Developer of the Original Code is Netscape
 * Communications Corporation.  Portions created by Netscape are
 * Copyright (C) 1998 Netscape Communications Corporation. All
 * Rights Reserved.
 *
 * Contributor(s): 
 */
#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