/* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
/* ***** BEGIN LICENSE BLOCK *****
 * Version: NPL 1.1/GPL 2.0/LGPL 2.1
 *
 * 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 the Initial Developer are Copyright (C) 1998
 * the Initial Developer. All Rights Reserved.
 *
 * Contributor(s):
 *
 * Alternatively, the contents of this file may be used under the terms of
 * either the GNU General Public License Version 2 or later (the "GPL"), or 
 * the GNU Lesser General Public License Version 2.1 or later (the "LGPL"),
 * in which case the provisions of the GPL or the LGPL are applicable instead
 * of those above. If you wish to allow use of your version of this file only
 * under the terms of either the GPL or the LGPL, and not to allow others to
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 * the terms of any one of the NPL, the GPL or the LGPL.
 *
 * ***** END LICENSE BLOCK ***** */
#ifndef nsAreaFrame_h___
#define nsAreaFrame_h___

#include "nsBlockFrame.h"
#include "nsVoidArray.h"
#include "nsAbsoluteContainingBlock.h"

struct nsStyleDisplay;
struct nsStylePosition;


/**
 * The area frame has an additional named child list:
 * - "Absolute-list" which contains the absolutely positioned frames
 *
 * @see nsLayoutAtoms::absoluteList
 */
class nsAreaFrame : public nsBlockFrame
{
public:
  friend nsresult NS_NewAreaFrame(nsIPresShell* aPresShell, nsIFrame** aResult, PRUint32 aFlags);
  
  // nsIFrame

#ifdef INCLUDE_XUL
  NS_IMETHOD Init(nsIPresContext*  aPresContext,
                  nsIContent*      aContent,
                  nsIFrame*        aParent,
                  nsIStyleContext* aContext,
                  nsIFrame*        aPrevInFlow);

  NS_IMETHOD Destroy(nsIPresContext* aPresContext);

  NS_IMETHOD AttributeChanged(nsIPresContext* aPresContext,
                              nsIContent* aChild,
                              PRInt32 aNameSpaceID,
                              nsIAtom* aAttribute,
                              PRInt32 aModType,
                              PRInt32 aHint);
#endif

  /**
   * Get the "type" of the frame
   *
   * @see nsLayoutAtoms::areaFrame
   */
  NS_IMETHOD GetFrameType(nsIAtom** aType) const;
  
#ifdef DEBUG
  NS_IMETHOD GetFrameName(nsAString& aResult) const;
  NS_IMETHOD SizeOf(nsISizeOfHandler* aHandler, PRUint32* aResult) const;
#endif

protected:
  nsAreaFrame();

#ifdef INCLUDE_XUL
  nsresult RegUnregAccessKey(nsIPresContext* aPresContext,
                             PRBool aDoReg);
#endif
};

#endif /* nsAreaFrame_h___ */