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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.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)
 * 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 _nsBaseWidgetAccessible_H_
#define _nsBaseWidgetAccessible_H_

#include "nsAccessibleWrap.h"
#include "nsHyperTextAccessibleWrap.h"
#include "nsIContent.h"

class nsIDOMNode;

  * This file contains a number of classes that are used as base
  *  classes for the different accessibility implementations of
  *  the HTML and XUL widget sets.  --jgaunt

  * Leaf version of DOM Accessible -- has no children
00057 class nsLeafAccessible : public nsAccessibleWrap
  nsLeafAccessible(nsIDOMNode* aNode, nsIWeakReference* aShell);
  NS_IMETHOD GetFirstChild(nsIAccessible **_retval);
  NS_IMETHOD GetLastChild(nsIAccessible **_retval);
  NS_IMETHOD GetChildCount(PRInt32 *_retval);
  NS_IMETHOD GetAllowsAnonChildAccessibles(PRBool *aAllowsAnonChildren);

  * A type of accessible for DOM nodes containing an href="" attribute.
  *  It knows how to report the state of the link ( traveled or not )
  *  and can activate ( click ) the link programmatically.
00073 class nsLinkableAccessible : public nsHyperTextAccessibleWrap
  enum { eAction_Jump = 0 };

  nsLinkableAccessible(nsIDOMNode* aNode, nsIWeakReference* aShell);
  NS_IMETHOD GetNumActions(PRUint8 *_retval);
  NS_IMETHOD GetActionName(PRUint8 aIndex, nsAString& aName);
  NS_IMETHOD DoAction(PRUint8 index);
  NS_IMETHOD GetState(PRUint32 *aState, PRUint32 *aExtraState);
  NS_IMETHOD GetValue(nsAString& _retval);
  NS_IMETHOD TakeFocus();
  NS_IMETHOD GetKeyboardShortcut(nsAString& _retval);
  NS_IMETHOD GetURI(PRInt32 i, nsIURI **aURI);
  NS_IMETHOD Init();
  NS_IMETHOD Shutdown();

  virtual void CacheActionContent();
  nsCOMPtr<nsIContent> mActionContent;
  PRPackedBool mIsLink;
  PRPackedBool mIsOnclick;

 * A simple accessible that gets its enumerated role passed into constructor.
00101 class nsEnumRoleAccessible : public nsAccessibleWrap
  nsEnumRoleAccessible(nsIDOMNode* aNode, nsIWeakReference* aShell, PRUint32 aRole);
  virtual ~nsEnumRoleAccessible() { }
  NS_IMETHODIMP GetRole(PRUint32 *aRole) { *aRole = mRole; return NS_OK; }

  PRUint32 mRole;


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