/* -*- 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):
 *   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 nsHTMLLegendElement_h___
#define nsHTMLLegendElement_h___

#include "nsIDOMHTMLLegendElement.h"
#include "nsGenericHTMLElement.h"

class nsHTMLLegendElement : public nsGenericHTMLElement,
                            public nsIDOMHTMLLegendElement
{
public:
  nsHTMLLegendElement(already_AddRefed<nsINodeInfo> aNodeInfo);
  virtual ~nsHTMLLegendElement();

  static nsHTMLLegendElement* FromContent(nsIContent *aContent)
  {
    if (aContent->IsHTML() && aContent->Tag() == nsGkAtoms::legend)
      return static_cast<nsHTMLLegendElement*>(aContent);
    return nsnull;
  }

  // nsISupports
  NS_DECL_ISUPPORTS_INHERITED

  // nsIDOMNode
  NS_FORWARD_NSIDOMNODE(nsGenericHTMLElement::)

  // nsIDOMElement
  NS_FORWARD_NSIDOMELEMENT(nsGenericHTMLElement::)

  // nsIDOMHTMLLegendElement
  NS_DECL_NSIDOMHTMLLEGENDELEMENT

    // Forward nsIDOMHTMLElement -- We don't override Click()
  NS_FORWARD_NSIDOMHTMLELEMENT_NOFOCUSCLICK(nsGenericHTMLElement::)
  NS_IMETHOD Click() { 
    return nsGenericHTMLElement::Click(); 
  }
  NS_IMETHOD Focus();

  virtual void PerformAccesskey(PRBool aKeyCausesActivation,
                                PRBool aIsTrustedEvent);

  // nsIContent
  virtual nsresult BindToTree(nsIDocument* aDocument, nsIContent* aParent,
                              nsIContent* aBindingParent,
                              PRBool aCompileEventHandlers);
  virtual void UnbindFromTree(PRBool aDeep = PR_TRUE,
                              PRBool aNullParent = PR_TRUE);
  virtual PRBool ParseAttribute(PRInt32 aNamespaceID,
                                nsIAtom* aAttribute,
                                const nsAString& aValue,
                                nsAttrValue& aResult);
  virtual nsChangeHint GetAttributeChangeHint(const nsIAtom* aAttribute,
                                              PRInt32 aModType) const;
  nsresult SetAttr(PRInt32 aNameSpaceID, nsIAtom* aName,
                   const nsAString& aValue, PRBool aNotify)
  {
    return SetAttr(aNameSpaceID, aName, nsnull, aValue, aNotify);
  }
  virtual nsresult SetAttr(PRInt32 aNameSpaceID, nsIAtom* aName,
                           nsIAtom* aPrefix, const nsAString& aValue,
                           PRBool aNotify);
  virtual nsresult UnsetAttr(PRInt32 aNameSpaceID, nsIAtom* aAttribute,
                             PRBool aNotify);

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

  mozilla::dom::Element *GetFormElement()
  {
    nsCOMPtr<nsIFormControl> fieldsetControl = do_QueryInterface(GetFieldSet());

    return fieldsetControl ? fieldsetControl->GetFormElement() : nsnull;
  }

  virtual nsXPCClassInfo* GetClassInfo();
protected:
  /**
   * Get the fieldset content element that contains this legend.
   * Returns null if there is no fieldset containing this legend.
   */
  nsIContent* GetFieldSet();
};

#endif /* nsHTMLLegendElement_h___ */
