gecko-dev/layout/xul/base/src/nsBoxObject.h

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 * Version: MPL 1.1/GPL 2.0/LGPL 2.1
 *
 * The contents of this file are subject to the Mozilla Public License Version
 * 1.1 (the "License"); you may not use this file except in compliance with
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 * WITHOUT WARRANTY OF ANY KIND, either express or implied. See the License
 * for the specific language governing rights and limitations under the
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 * The Original Code is Mozilla Communicator client 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):
 *   Original Author: David W. Hyatt (hyatt@netscape.com)
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 * either of the GNU General Public License Version 2 or later (the "GPL"),
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#ifndef nsBoxObject_h_
#define nsBoxObject_h_

#include "nsCOMPtr.h"
#include "nsIBoxObject.h"
#include "nsPIBoxObject.h"
#include "nsPoint.h"
#include "nsAutoPtr.h"
#include "nsHashKeys.h"
#include "nsInterfaceHashtable.h"
#include "nsCycleCollectionParticipant.h"

class nsIFrame;
class nsIDocShell;
struct nsIntRect;

class nsBoxObject : public nsPIBoxObject
{
  NS_DECL_CYCLE_COLLECTING_ISUPPORTS
  NS_DECL_CYCLE_COLLECTION_CLASS(nsBoxObject)
  NS_DECL_NSIBOXOBJECT

public:
  nsBoxObject();
  virtual ~nsBoxObject();

  // nsPIBoxObject
  virtual nsresult Init(nsIContent* aContent);
  virtual void Clear();
  virtual void ClearCachedValues();

  nsIFrame* GetFrame(PRBool aFlushLayout);
  nsIPresShell* GetPresShell(PRBool aFlushLayout);
  nsresult GetOffsetRect(nsIntRect& aRect);
  nsresult GetScreenPosition(nsIntPoint& aPoint);

  // Given a parent frame and a child frame, find the frame whose
  // next sibling is the given child frame and return its element
  static nsresult GetPreviousSibling(nsIFrame* aParentFrame, nsIFrame* aFrame,
                                     nsIDOMElement** aResult);

protected:

  nsAutoPtr<nsInterfaceHashtable<nsStringHashKey,nsISupports> > mPropertyTable; //[OWNER]

  nsIContent* mContent; // [WEAK]
};

#endif