/* -*- 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 Communicator client 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
 * use your version of this file under the terms of the NPL, indicate your
 * decision by deleting the provisions above and replace them with the notice
 * and other provisions required by the GPL or the LGPL. If you do not delete
 * the provisions above, a recipient may use your version of this file under
 * the terms of any one of the NPL, the GPL or the LGPL.
 *
 * ***** END LICENSE BLOCK ***** */

/**
 
  Author:
  Eric D Vaughan

**/

#ifndef nsGridRowLayout_h___
#define nsGridRowLayout_h___

#include "nsSprocketLayout.h"
#include "nsIGridPart.h"
class nsGridRowGroupLayout;
class nsGridLayout2;
class nsBoxLayoutState;
class nsIPresShell;
class nsGrid;

class nsGridRowLayout : public nsSprocketLayout,
                        public nsIGridPart
{
public:
  NS_DECL_ISUPPORTS_INHERITED

  NS_IMETHOD CastToRowGroupLayout(nsGridRowGroupLayout** aRowGroup);
  NS_IMETHOD CastToGridLayout(nsGridLayout2** aGrid);
  NS_IMETHOD GetGrid(nsIBox* aBox, nsGrid** aList, PRInt32* aIndex, nsGridRowLayout* aRequestor=nsnull);
  NS_IMETHOD GetParentGridPart(nsIBox* aBox, nsIBox** aParentBox, nsIGridPart** aParentGridRow);
  NS_IMETHOD ChildrenInserted(nsIBox* aBox, nsBoxLayoutState& aState, nsIBox* aPrevBox, nsIBox* aChildList);
  NS_IMETHOD ChildrenAppended(nsIBox* aBox, nsBoxLayoutState& aState, nsIBox* aChildList);
  NS_IMETHOD ChildrenRemoved(nsIBox* aBox, nsBoxLayoutState& aState, nsIBox* aChildList);
  NS_IMETHOD ChildrenSet(nsIBox* aBox, nsBoxLayoutState& aState, nsIBox* aChildList);
  NS_IMETHOD GetTotalMargin(nsIBox* aBox, nsMargin& aMargin, PRBool aIsHorizontal);

protected:
  NS_IMETHOD ChildAddedOrRemoved(nsIBox* aBox, nsBoxLayoutState& aState)=0;

  nsGridRowLayout(nsIPresShell* aShell);
};

#endif