/* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
/* vim: set ts=2 sw=2 et tw=78: */
/* ***** 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):
 *   Pierre Phaneuf <pp@ludusdesign.com>
 *   Mats Palmgren <mats.palmgren@bredband.net>
 *
 * 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 nsHTMLOptionElement_h__
#define nsHTMLOptionElement_h__

#include "nsGenericHTMLElement.h"
#include "nsIDOMHTMLOptionElement.h"
#include "nsIJSNativeInitializer.h"

class nsHTMLSelectElement;

class nsHTMLOptionElement : public nsGenericHTMLElement,
                            public nsIDOMHTMLOptionElement,
                            public nsIJSNativeInitializer
{
public:
  nsHTMLOptionElement(already_AddRefed<nsINodeInfo> aNodeInfo);
  virtual ~nsHTMLOptionElement();

  /** Typesafe, non-refcounting cast from nsIContent.  Cheaper than QI. **/
  static nsHTMLOptionElement* FromContent(nsIContent *aContent)
  {
    if (aContent && aContent->IsHTML(nsGkAtoms::option))
      return static_cast<nsHTMLOptionElement*>(aContent);
    return nsnull;
  }

  // nsISupports
  NS_DECL_ISUPPORTS_INHERITED

  // nsIDOMNode
  NS_FORWARD_NSIDOMNODE(nsGenericHTMLElement::)

  // nsIDOMElement
  NS_FORWARD_NSIDOMELEMENT(nsGenericHTMLElement::)

  // nsIDOMHTMLElement
  NS_FORWARD_NSIDOMHTMLELEMENT(nsGenericHTMLElement::)

  // nsIDOMHTMLOptionElement
  using nsGenericElement::SetText;
  using nsGenericElement::GetText;
  NS_DECL_NSIDOMHTMLOPTIONELEMENT

  bool Selected() const;
  bool DefaultSelected() const;

  // nsIJSNativeInitializer
  NS_IMETHOD Initialize(nsISupports* aOwner, JSContext* aContext,
                        JSObject *aObj, PRUint32 argc, jsval *argv);

  virtual nsChangeHint GetAttributeChangeHint(const nsIAtom* aAttribute,
                                              PRInt32 aModType) const;

  virtual nsresult BeforeSetAttr(PRInt32 aNamespaceID, nsIAtom* aName,
                                 const nsAString* aValue, PRBool aNotify);
  
  void SetSelectedInternal(PRBool aValue, PRBool aNotify);

  // nsIContent
  virtual nsEventStates IntrinsicState() const;

  virtual nsresult Clone(nsINodeInfo *aNodeInfo, nsINode **aResult) const;

  nsresult CopyInnerTo(nsGenericElement* aDest) const;

  virtual nsXPCClassInfo* GetClassInfo();
protected:
  /**
   * Get the select content element that contains this option, this
   * intentionally does not return nsresult, all we care about is if
   * there's a select associated with this option or not.
   */
  nsHTMLSelectElement* GetSelect();

  PRPackedBool mSelectedChanged;
  PRPackedBool mIsSelected;

  // True only while we're under the SetOptionsSelectedByIndex call when our
  // "selected" attribute is changing and mSelectedChanged is false.
  PRPackedBool mIsInSetDefaultSelected;
};

#endif
