/* -*- 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
 * Mozilla Foundation.
 * Portions created by the Initial Developer are Copyright (C) 2007
 * the Initial Developer. All Rights Reserved.
 *
 * Contributor(s):
 *   Alexander Surkov <surkov.alexander@gmail.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 _nsXULSliderAccessible_H_
#define _nsXULSliderAccessible_H_

#include "nsAccessibleWrap.h"

#include "nsIDOMElement.h"

/**
 * Used for XUL slider and scale elements.
 */
class nsXULSliderAccessible : public nsAccessibleWrap
{
public:
  nsXULSliderAccessible(nsIContent *aContent, nsIWeakReference *aShell);

  // nsISupports
  NS_DECL_ISUPPORTS_INHERITED

  // nsIAccessible
  NS_IMETHOD GetValue(nsAString& aValue);
  NS_IMETHOD GetActionName(PRUint8 aIndex, nsAString& aName);
  NS_IMETHOD DoAction(PRUint8 aIndex);

  // nsIAccessibleValue
  NS_DECL_NSIACCESSIBLEVALUE

  // nsAccessible
  virtual PRUint32 NativeRole();
  virtual PRUint64 NativeState();
  virtual bool GetAllowsAnonChildAccessibles();

  // ActionAccessible
  virtual PRUint8 ActionCount();

protected:
  already_AddRefed<nsIContent> GetSliderNode();

  nsresult GetSliderAttr(nsIAtom *aName, nsAString& aValue);
  nsresult SetSliderAttr(nsIAtom *aName, const nsAString& aValue);

  nsresult GetSliderAttr(nsIAtom *aName, double *aValue);
  nsresult SetSliderAttr(nsIAtom *aName, double aValue);

private:
  nsCOMPtr<nsIDOMElement> mSliderNode;
};


/**
 * Used for slider's thumb element.
 */
class nsXULThumbAccessible : public nsAccessibleWrap
{
public:
  nsXULThumbAccessible(nsIContent *aContent, nsIWeakReference *aShell);

  // nsAccessible
  virtual PRUint32 NativeRole();
};

#endif

