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/* -*- 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
 * http://www.mozilla.org/MPL/
 * 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 of 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 MPL, 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 MPL, the GPL or the LGPL.
 * ***** END LICENSE BLOCK ***** */
#ifndef nsDOMAttribute_h___
#define nsDOMAttribute_h___

#include "nsIAttribute.h"
#include "nsIDOMAttr.h"
#include "nsIDOMText.h"
#include "nsIDOMNodeList.h"
#include "nsGenericDOMNodeList.h"
#include "nsString.h"
#include "nsCOMPtr.h"
#include "nsINodeInfo.h"
#include "nsIDOM3Node.h"
#include "nsDOMAttributeMap.h"

class nsDOMAttribute;

// bogus child list for an attribute
class nsAttributeChildList : public nsGenericDOMNodeList
  nsAttributeChildList(nsDOMAttribute* aAttribute);
  virtual ~nsAttributeChildList();

  // interface nsIDOMNodeList
  NS_IMETHOD    GetLength(PRUint32* aLength);
  NS_IMETHOD    Item(PRUint32 aIndex, nsIDOMNode** aReturn);

  void DropReference();

  nsDOMAttribute* mAttribute;

// Attribute helper class used to wrap up an attribute with a dom
// object that implements nsIDOMAttr and nsIDOMNode
class nsDOMAttribute : public nsIDOMAttr,
                       public nsIDOM3Node,
                       public nsIAttribute
  nsDOMAttribute(nsDOMAttributeMap* aAttrMap, nsINodeInfo *aNodeInfo,
                 const nsAString& aValue);
  virtual ~nsDOMAttribute();


  // nsIDOMNode interface

  // nsIDOM3Node interface

  // nsIDOMAttr interface

  // nsIAttribute interface
  void SetMap(nsDOMAttributeMap *aMap);
  nsIContent *GetContent() const;

  // Property functions, see nsPropertyTable.h
  virtual void* GetProperty(nsIAtom  *aPropertyName,
                            nsresult *aStatus = nsnull);
  virtual nsresult SetProperty(nsIAtom            *aPropertyName,
                               void               *aValue,
                               NSPropertyDtorFunc  aDtor);
  virtual nsresult DeleteProperty(nsIAtom  *aPropertyName);
  virtual void*    UnsetProperty(nsIAtom *aPropertyName,
                                 nsresult *aStatus = nsnull);
  static void Initialize();
  static void Shutdown();

  static PRBool sInitialized;

  nsString mValue;
  // XXX For now, there's only a single child - a text
  // element representing the value
  nsIDOMText* mChild;
  nsAttributeChildList* mChildList;

  nsIContent *GetContentInternal() const
    return mAttrMap ? mAttrMap->GetContent() : nsnull;

#endif /* nsDOMAttribute_h___ */

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