/* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
/* ***** BEGIN LICENSE BLOCK *****
 * Version: NPL 1.1/GPL 2.0/LGPL 2.1
 *
 * The contents of this file are subject to the Netscape 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/NPL/
 *
 * 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):
 *
 *
 * Alternatively, the contents of this file may be used under the terms of
 * either 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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 * decision by deleting the provisions above and replace them with the notice
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 * the provisions above, a recipient may use your version of this file under
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 * ***** END LICENSE BLOCK ***** */
#include "nsIDOMHTMLLegendElement.h"
#include "nsIDOMHTMLFormElement.h"
#include "nsIDOMEventReceiver.h"
#include "nsIHTMLContent.h"
#include "nsGenericHTMLElement.h"
#include "nsHTMLAtoms.h"
#include "nsStyleConsts.h"
#include "nsIPresContext.h"
#include "nsIForm.h"
#include "nsIFormControl.h"


class nsHTMLLegendElement : public nsGenericHTMLFormElement,
                            public nsIDOMHTMLLegendElement
{
public:
  nsHTMLLegendElement();
  virtual ~nsHTMLLegendElement();

  // nsISupports
  NS_DECL_ISUPPORTS_INHERITED

  // nsIDOMNode
  NS_FORWARD_NSIDOMNODE_NO_CLONENODE(nsGenericHTMLFormElement::)

  // nsIDOMElement
  NS_FORWARD_NSIDOMELEMENT(nsGenericHTMLFormElement::)

  // nsIDOMHTMLElement
  NS_FORWARD_NSIDOMHTMLELEMENT(nsGenericHTMLFormElement::)

  // nsIDOMHTMLLegendElement
  NS_DECL_NSIDOMHTMLLEGENDELEMENT

  // nsIFormControl
  NS_IMETHOD_(PRInt32) GetType() { return NS_FORM_LEGEND; }
  NS_IMETHOD Reset();
  NS_IMETHOD SubmitNamesValues(nsIFormSubmission* aFormSubmission,
                               nsIContent* aSubmitElement);

  // nsIContent
  virtual PRBool ParseAttribute(nsIAtom* aAttribute,
                                const nsAString& aValue,
                                nsAttrValue& aResult);
  NS_IMETHOD AttributeToString(nsIAtom* aAttribute,
                               const nsHTMLValue& aValue,
                               nsAString& aResult) const;
  NS_IMETHOD GetAttributeChangeHint(const nsIAtom* aAttribute,
                                    PRInt32 aModType,
                                    nsChangeHint& aHint) const;
};

nsresult
NS_NewHTMLLegendElement(nsIHTMLContent** aInstancePtrResult,
                        nsINodeInfo *aNodeInfo, PRBool aFromParser)
{
  NS_ENSURE_ARG_POINTER(aInstancePtrResult);

  nsHTMLLegendElement* it = new nsHTMLLegendElement();

  if (!it) {
    return NS_ERROR_OUT_OF_MEMORY;
  }

  nsresult rv = NS_STATIC_CAST(nsGenericElement *, it)->Init(aNodeInfo);

  if (NS_FAILED(rv)) {
    delete it;

    return rv;
  }

  *aInstancePtrResult = NS_STATIC_CAST(nsIHTMLContent *, it);
  NS_ADDREF(*aInstancePtrResult);

  return NS_OK;
}


nsHTMLLegendElement::nsHTMLLegendElement()
{
}

nsHTMLLegendElement::~nsHTMLLegendElement()
{
}


NS_IMPL_ADDREF_INHERITED(nsHTMLLegendElement, nsGenericElement) 
NS_IMPL_RELEASE_INHERITED(nsHTMLLegendElement, nsGenericElement) 


// QueryInterface implementation for nsHTMLLegendElement
NS_HTML_CONTENT_INTERFACE_MAP_BEGIN(nsHTMLLegendElement,
                                    nsGenericHTMLFormElement)
  NS_INTERFACE_MAP_ENTRY(nsIDOMHTMLLegendElement)
  NS_INTERFACE_MAP_ENTRY_CONTENT_CLASSINFO(HTMLLegendElement)
NS_HTML_CONTENT_INTERFACE_MAP_END


// nsIDOMHTMLLegendElement
nsresult
nsHTMLLegendElement::CloneNode(PRBool aDeep, nsIDOMNode** aReturn)
{
  NS_ENSURE_ARG_POINTER(aReturn);
  *aReturn = nsnull;

  nsHTMLLegendElement* it = new nsHTMLLegendElement();

  if (!it) {
    return NS_ERROR_OUT_OF_MEMORY;
  }

  nsCOMPtr<nsIDOMNode> kungFuDeathGrip(it);

  nsresult rv = NS_STATIC_CAST(nsGenericElement *, it)->Init(mNodeInfo);

  if (NS_FAILED(rv))
    return rv;

  CopyInnerTo(it, aDeep);

  *aReturn = NS_STATIC_CAST(nsIDOMNode *, it);

  NS_ADDREF(*aReturn);

  return NS_OK;
}

NS_IMETHODIMP
nsHTMLLegendElement::GetForm(nsIDOMHTMLFormElement** aForm)
{
  return nsGenericHTMLFormElement::GetForm(aForm);
}


NS_IMPL_STRING_ATTR(nsHTMLLegendElement, AccessKey, accesskey)
NS_IMPL_STRING_ATTR(nsHTMLLegendElement, Align, align)

// this contains center, because IE4 does
static const nsHTMLValue::EnumTable kAlignTable[] = {
  { "left", NS_STYLE_TEXT_ALIGN_LEFT },
  { "right", NS_STYLE_TEXT_ALIGN_RIGHT },
  { "center", NS_STYLE_TEXT_ALIGN_CENTER },
  { "bottom", NS_STYLE_VERTICAL_ALIGN_BOTTOM },
  { "top", NS_STYLE_VERTICAL_ALIGN_TOP },
  { 0 }
};

PRBool
nsHTMLLegendElement::ParseAttribute(nsIAtom* aAttribute,
                                    const nsAString& aValue,
                                    nsAttrValue& aResult)
{
  if (aAttribute == nsHTMLAtoms::align) {
    return aResult.ParseEnumValue(aValue, kAlignTable);
  }

  return nsGenericHTMLElement::ParseAttribute(aAttribute, aValue, aResult);
}

NS_IMETHODIMP
nsHTMLLegendElement::AttributeToString(nsIAtom* aAttribute,
                                       const nsHTMLValue& aValue,
                                       nsAString& aResult) const
{
  if (aAttribute == nsHTMLAtoms::align) {
    if (eHTMLUnit_Enumerated == aValue.GetUnit()) {
      aValue.EnumValueToString(kAlignTable, aResult);
      return NS_CONTENT_ATTR_HAS_VALUE;
    }
  }

  return nsGenericHTMLFormElement::AttributeToString(aAttribute, aValue,
                                                     aResult);
}

NS_IMETHODIMP
nsHTMLLegendElement::GetAttributeChangeHint(const nsIAtom* aAttribute,
                                            PRInt32 aModType,
                                            nsChangeHint& aHint) const
{
  nsresult rv =
    nsGenericHTMLFormElement::GetAttributeChangeHint(aAttribute, aModType,
                                                     aHint);
  if (aAttribute == nsHTMLAtoms::align) {
    NS_UpdateHint(aHint, NS_STYLE_HINT_REFLOW);
  }
  return rv;
}

nsresult
nsHTMLLegendElement::Reset()
{
  return NS_OK;
}

NS_IMETHODIMP
nsHTMLLegendElement::SubmitNamesValues(nsIFormSubmission* aFormSubmission,
                                       nsIContent* aSubmitElement)
{
  return NS_OK;
}
