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nsHTMLHeadingElement.cpp

/* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
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 * Version: MPL 1.1/GPL 2.0/LGPL 2.1
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 * The contents of this file are subject to the Mozilla Public License Version
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 * the License. You may obtain a copy of the License at
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 * 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.
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 * Contributor(s):
 *
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 * either of the GNU General Public License Version 2 or later (the "GPL"),
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#include "nsIDOMHTMLHeadingElement.h"
#include "nsIDOMEventTarget.h"
#include "nsGenericHTMLElement.h"
#include "nsGkAtoms.h"
#include "nsStyleConsts.h"
#include "nsPresContext.h"
#include "nsMappedAttributes.h"
#include "nsRuleData.h"
#include "mozAutoDocUpdate.h"

class nsHTMLHeadingElement : public nsGenericHTMLElement,
                             public nsIDOMHTMLHeadingElement
{
public:
  nsHTMLHeadingElement(nsINodeInfo *aNodeInfo);
  virtual ~nsHTMLHeadingElement();

  // nsISupports
  NS_DECL_ISUPPORTS_INHERITED

  // nsIDOMNode
  NS_FORWARD_NSIDOMNODE(nsGenericHTMLElement::)

  // nsIDOMElement
  NS_FORWARD_NSIDOMELEMENT(nsGenericHTMLElement::)

  // nsIDOMHTMLElement
  NS_FORWARD_NSIDOMHTMLELEMENT(nsGenericHTMLElement::)

  // nsIDOMHTMLHeadingElement
  NS_DECL_NSIDOMHTMLHEADINGELEMENT

  virtual PRBool ParseAttribute(PRInt32 aNamespaceID,
                                nsIAtom* aAttribute,
                                const nsAString& aValue,
                                nsAttrValue& aResult);
  NS_IMETHOD_(PRBool) IsAttributeMapped(const nsIAtom* aAttribute) const;
  nsMapRuleToAttributesFunc GetAttributeMappingFunction() const;
  virtual nsresult Clone(nsINodeInfo *aNodeInfo, nsINode **aResult) const;
};


NS_IMPL_NS_NEW_HTML_ELEMENT(Heading)


nsHTMLHeadingElement::nsHTMLHeadingElement(nsINodeInfo *aNodeInfo)
  : nsGenericHTMLElement(aNodeInfo)
{
}

nsHTMLHeadingElement::~nsHTMLHeadingElement()
{
}


NS_IMPL_ADDREF_INHERITED(nsHTMLHeadingElement, nsGenericElement) 
NS_IMPL_RELEASE_INHERITED(nsHTMLHeadingElement, nsGenericElement) 


// QueryInterface implementation for nsHTMLHeadingElement
NS_HTML_CONTENT_INTERFACE_TABLE_HEAD(nsHTMLHeadingElement,
                                     nsGenericHTMLElement)
  NS_INTERFACE_TABLE_INHERITED1(nsHTMLHeadingElement, nsIDOMHTMLHeadingElement)
NS_HTML_CONTENT_INTERFACE_TABLE_TAIL_CLASSINFO(HTMLHeadingElement)


NS_IMPL_ELEMENT_CLONE(nsHTMLHeadingElement)


NS_IMPL_STRING_ATTR(nsHTMLHeadingElement, Align, align)


PRBool
nsHTMLHeadingElement::ParseAttribute(PRInt32 aNamespaceID,
                                     nsIAtom* aAttribute,
                                     const nsAString& aValue,
                                     nsAttrValue& aResult)
{
  if (aAttribute == nsGkAtoms::align && aNamespaceID == kNameSpaceID_None) {
    return ParseDivAlignValue(aValue, aResult);
  }

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

static void
MapAttributesIntoRule(const nsMappedAttributes* aAttributes, nsRuleData* aData)
{
  nsGenericHTMLElement::MapDivAlignAttributeInto(aAttributes, aData);
  nsGenericHTMLElement::MapCommonAttributesInto(aAttributes, aData);
}

NS_IMETHODIMP_(PRBool)
nsHTMLHeadingElement::IsAttributeMapped(const nsIAtom* aAttribute) const
{
  static const MappedAttributeEntry* const map[] = {
    sDivAlignAttributeMap,
    sCommonAttributeMap
  };

  return FindAttributeDependence(aAttribute, map, NS_ARRAY_LENGTH(map));
}


nsMapRuleToAttributesFunc
nsHTMLHeadingElement::GetAttributeMappingFunction() const
{
  return &MapAttributesIntoRule;
}

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