/* -*- 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.org 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):
 *   John Gaunt (jgaunt@netscape.com) (original author)
 *
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 * 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
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 * ***** END LICENSE BLOCK ***** */

#ifndef _nsHTMLWin32ObjectAccessible_H_
#define _nsHTMLWin32ObjectAccessible_H_

#include "nsIAccessibleWin32Object.h"
#include "nsBaseWidgetAccessible.h"

struct IAccessible;

class nsHTMLWin32ObjectOwnerAccessible : public nsAccessibleWrap
{
public:
  // This will own the nsHTMLWin32ObjectAccessible. We create this where the
  // <object> or <embed> exists in the tree, so that get_accNextSibling() etc.
  // will still point to Gecko accessible sibling content. This is necessary
  // because the native plugin accessible doesn't know where it exists in the
  // Mozilla tree, and returns null for previous and next sibling. This would
  // have the effect of cutting off all content after the plugin.
  nsHTMLWin32ObjectOwnerAccessible(nsIDOMNode* aNode, nsIWeakReference* aShell, void* aHwnd);
  virtual ~nsHTMLWin32ObjectOwnerAccessible() {}

  // nsIAccessible
  NS_IMETHOD GetFirstChild(nsIAccessible **aFirstChild);
  NS_IMETHOD GetLastChild(nsIAccessible **aLastChild);
  NS_IMETHOD GetChildCount(PRInt32 *aChildCount);  // Zero or one child

  // nsAccessNode
  virtual nsresult Shutdown();

protected:
  void* mHwnd;
  nsCOMPtr<nsIAccessible> mNativeAccessible;
};

/**
  * This class is used only internally, we never! send out an IAccessible linked
  *   back to this object. This class is used to represent a plugin object when
  *   referenced as a child or sibling of another nsAccessible node. We need only
  *   a limited portion of the nsIAccessible interface implemented here. The
  *   in depth accessible information will be returned by the actual IAccessible
  *   object returned by us in Accessible::NewAccessible() that gets the IAccessible
  *   from the windows system from the window handle.
  */
class nsHTMLWin32ObjectAccessible : public nsLeafAccessible,
                                    public nsIAccessibleWin32Object
{
public:

  nsHTMLWin32ObjectAccessible(void* aHwnd);
  virtual ~nsHTMLWin32ObjectAccessible() {}

  NS_DECL_ISUPPORTS_INHERITED
  NS_DECL_NSIACCESSIBLEWIN32OBJECT

protected:
  void* mHwnd;
};

#endif  
