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/* ***** BEGIN LICENSE BLOCK *****
 * 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
 * Version 1.1 (the "License"); you may not use this file except in
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 * 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 
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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 nsBoxLayout_h___
#define nsBoxLayout_h___

#include "nsIBoxLayout.h"

class nsBoxLayout : public nsIBoxLayout {

public:

  nsBoxLayout();
  virtual ~nsBoxLayout() {};

  NS_DECL_ISUPPORTS

  NS_IMETHOD Layout(nsIBox* aBox, nsBoxLayoutState& aState);

  NS_IMETHOD GetPrefSize(nsIBox* aBox, nsBoxLayoutState& aBoxLayoutState, nsSize& aSize);
  NS_IMETHOD GetMinSize(nsIBox* aBox, nsBoxLayoutState& aBoxLayoutState, nsSize& aSize);
  NS_IMETHOD GetMaxSize(nsIBox* aBox, nsBoxLayoutState& aBoxLayoutState, nsSize& aSize);
  NS_IMETHOD GetFlex(nsIBox* aBox, nsBoxLayoutState& aBoxLayoutState, nscoord& aFlex);
  NS_IMETHOD GetAscent(nsIBox* aBox, nsBoxLayoutState& aBoxLayoutState, nscoord& aAscent);
  NS_IMETHOD IsCollapsed(nsIBox* aBox, nsBoxLayoutState& aBoxLayoutState, PRBool& aCollapsed);
  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 ChildBecameDirty(nsIBox* aBox, nsBoxLayoutState& aState, nsIBox* aChild);
  NS_IMETHOD BecameDirty(nsIBox* aBox, nsBoxLayoutState& aState);

  virtual void GetParentLayout(nsIBox* aBox, nsIBoxLayout** aParent);
  virtual void AddBorderAndPadding(nsIBox* aBox, nsSize& aSize);
  virtual void AddInset(nsIBox* aBox, nsSize& aSize);
  virtual void AddMargin(nsIBox* aChild, nsSize& aSize);
  virtual void AddMargin(nsSize& aSize, const nsMargin& aMargin);

  static void AddLargestSize(nsSize& aSize, const nsSize& aToAdd);
  static void AddSmallestSize(nsSize& aSize, const nsSize& aToAdd);
};

#endif