/* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
/* ***** BEGIN LICENSE BLOCK *****
 * 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
 * the License. You may obtain a copy of the License at
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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
 * Netscape Communications Corporation.
 * 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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 * either of the GNU General Public License Version 2 or later (the "GPL"),
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 * ***** END LICENSE BLOCK ***** */

/* DOM object for element.style */

#ifndef nsDOMCSSAttributeDeclaration_h___
#define nsDOMCSSAttributeDeclaration_h___

#include "nsDOMCSSDeclaration.h"

#include "nsString.h"
#include "nsWrapperCache.h"
#include "nsIContent.h"

namespace mozilla {
namespace css {
class Loader;
}
}

class nsDOMCSSAttributeDeclaration : public nsDOMCSSDeclaration,
                                     public nsWrapperCache
{
public:
  nsDOMCSSAttributeDeclaration(nsIContent *aContent
#ifdef MOZ_SMIL
                               , PRBool aIsSMILOverride
#endif // MOZ_SMIL
                               );
  ~nsDOMCSSAttributeDeclaration();

  NS_DECL_CYCLE_COLLECTING_ISUPPORTS
  NS_DECL_CYCLE_COLLECTION_CLASS_AMBIGUOUS(nsDOMCSSAttributeDeclaration,
                                           nsICSSDeclaration)

  // If GetCSSDeclaration returns non-null, then the decl it returns
  // is owned by our current style rule.
  virtual nsresult GetCSSDeclaration(mozilla::css::Declaration **aDecl,
                                     PRBool aAllocate);
  virtual nsresult GetCSSParsingEnvironment(nsIURI** aSheetURI,
                                            nsIURI** aBaseURI,
                                            nsIPrincipal** aSheetPrincipal,
                                            mozilla::css::Loader** aCSSLoader);
  NS_IMETHOD GetParentRule(nsIDOMCSSRule **aParent);

  virtual nsINode *GetParentObject()
  {
    return mContent;
  }

protected:
  virtual nsresult DeclarationChanged();
  virtual nsIDocument* DocToUpdate();

  nsCOMPtr<nsIContent> mContent;

#ifdef MOZ_SMIL
  /* If true, this indicates that this nsDOMCSSAttributeDeclaration
   * should interact with mContent's SMIL override style rule (rather
   * than the inline style rule).
   */
  const PRBool mIsSMILOverride;
#endif // MOZ_SMIL
};

#endif /* nsDOMCSSAttributeDeclaration_h___ */