Mozilla/mozilla/layout/html/content/src/nsHTMLEmbedElement.cpp

/* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*-
 *
 * The contents of this file are subject to the Netscape Public License
 * Version 1.0 (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 Netscape are Copyright (C) 1998
 * Netscape Communications Corporation.  All Rights Reserved.
 */
#include "nsIDOMHTMLElement.h"
#include "nsIScriptObjectOwner.h"
#include "nsIDOMEventReceiver.h"
#include "nsIHTMLContent.h"
#include "nsGenericHTMLElement.h"
#include "nsHTMLAtoms.h"
#include "nsHTMLIIDs.h"
#include "nsIStyleContext.h"
#include "nsStyleConsts.h"
#include "nsIPresContext.h"

// XXX define nsIDOMHTMLEmbedElement; add in nav attrs

//static NS_DEFINE_IID(kIDOMHTMLEmbedElementIID, NS_IDOMHTMLEmbedELEMENT_IID);

class nsHTMLEmbedElement : public nsIDOMHTMLElement,
                           public nsIScriptObjectOwner,
                           public nsIDOMEventReceiver,
                           public nsIHTMLContent
{
public:
  nsHTMLEmbedElement(nsIAtom* aTag);
  virtual ~nsHTMLEmbedElement();

  // nsISupports
  NS_DECL_ISUPPORTS

  // nsIDOMNode
  NS_IMPL_IDOMNODE_USING_GENERIC(mInner)

  // nsIDOMElement
  NS_IMPL_IDOMELEMENT_USING_GENERIC(mInner)

  // nsIDOMHTMLElement
  NS_IMPL_IDOMHTMLELEMENT_USING_GENERIC(mInner)

  // nsIDOMHTMLEmbedElement

  // nsIScriptObjectOwner
  NS_IMPL_ISCRIPTOBJECTOWNER_USING_GENERIC(mInner)

  // nsIDOMEventReceiver
  NS_IMPL_IDOMEVENTRECEIVER_USING_GENERIC(mInner)

  // nsIContent
  NS_IMPL_ICONTENT_USING_GENERIC(mInner)

  // nsIHTMLContent
  NS_IMPL_IHTMLCONTENT_USING_GENERIC(mInner)

protected:
  nsGenericHTMLLeafElement mInner;
};

nsresult
NS_NewHTMLEmbedElement(nsIHTMLContent** aInstancePtrResult, nsIAtom* aTag)
{
  NS_PRECONDITION(nsnull != aInstancePtrResult, "null ptr");
  if (nsnull == aInstancePtrResult) {
    return NS_ERROR_NULL_POINTER;
  }
  nsIHTMLContent* it = new nsHTMLEmbedElement(aTag);
  if (nsnull == it) {
    return NS_ERROR_OUT_OF_MEMORY;
  }
  return it->QueryInterface(kIHTMLContentIID, (void**) aInstancePtrResult);
}

nsHTMLEmbedElement::nsHTMLEmbedElement(nsIAtom* aTag)
{
  NS_INIT_REFCNT();
  mInner.Init(this, aTag);
}

nsHTMLEmbedElement::~nsHTMLEmbedElement()
{
}

NS_IMPL_ADDREF(nsHTMLEmbedElement)

NS_IMPL_RELEASE(nsHTMLEmbedElement)

nsresult
nsHTMLEmbedElement::QueryInterface(REFNSIID aIID, void** aInstancePtr)
{
  NS_IMPL_HTML_CONTENT_QUERY_INTERFACE(aIID, aInstancePtr, this)
#if XXX
  if (aIID.Equals(kIDOMHTMLEmbedElementIID)) {
    nsIDOMHTMLEmbedElement* tmp = this;
    *aInstancePtr = (void*) tmp;
    mRefCnt++;
    return NS_OK;
  }
#endif
  return NS_NOINTERFACE;
}

nsresult
nsHTMLEmbedElement::CloneNode(PRBool aDeep, nsIDOMNode** aReturn)
{
  nsHTMLEmbedElement* it = new nsHTMLEmbedElement(mInner.mTag);
  if (nsnull == it) {
    return NS_ERROR_OUT_OF_MEMORY;
  }
  mInner.CopyInnerTo(this, &it->mInner, aDeep);
  return it->QueryInterface(kIDOMNodeIID, (void**) aReturn);
}

NS_IMETHODIMP
nsHTMLEmbedElement::StringToAttribute(nsIAtom* aAttribute,
                                       const nsString& aValue,
                                       nsHTMLValue& aResult)
{
  if (aAttribute == nsHTMLAtoms::align) {
    if (nsGenericHTMLElement::ParseAlignValue(aValue, aResult)) {
      return NS_CONTENT_ATTR_HAS_VALUE;
    }
  }
  else if (nsGenericHTMLElement::ParseImageAttribute(aAttribute,
                                                     aValue, aResult)) {
    return NS_CONTENT_ATTR_HAS_VALUE;
  }
  return NS_CONTENT_ATTR_NOT_THERE;
}

NS_IMETHODIMP
nsHTMLEmbedElement::AttributeToString(nsIAtom* aAttribute,
                                       const nsHTMLValue& aValue,
                                       nsString& aResult) const
{
  if (aAttribute == nsHTMLAtoms::align) {
    if (eHTMLUnit_Enumerated == aValue.GetUnit()) {
      nsGenericHTMLElement::AlignValueToString(aValue, aResult);
      return NS_CONTENT_ATTR_HAS_VALUE;
    }
  }
  else if (nsGenericHTMLElement::ImageAttributeToString(aAttribute,
                                                        aValue, aResult)) {
    return NS_CONTENT_ATTR_HAS_VALUE;
  }
  return mInner.AttributeToString(aAttribute, aValue, aResult);
}

static void
MapAttributesInto(const nsIHTMLMappedAttributes* aAttributes,
                  nsIStyleContext* aContext,
                  nsIPresContext* aPresContext)
{
  nsGenericHTMLElement::MapImageAlignAttributeInto(aAttributes, aContext, aPresContext);
  nsGenericHTMLElement::MapImageAttributesInto(aAttributes, aContext, aPresContext);
  nsGenericHTMLElement::MapImageBorderAttributeInto(aAttributes, aContext, aPresContext, nsnull);
  nsGenericHTMLElement::MapCommonAttributesInto(aAttributes, aContext, aPresContext);
}

NS_IMETHODIMP
nsHTMLEmbedElement::GetMappedAttributeImpact(const nsIAtom* aAttribute,
                                             PRInt32& aHint) const
{
  if (! nsGenericHTMLElement::GetCommonMappedAttributesImpact(aAttribute, aHint)) {
    if (! nsGenericHTMLElement::GetImageMappedAttributesImpact(aAttribute, aHint)) {
      if (! nsGenericHTMLElement::GetImageAlignAttributeImpact(aAttribute, aHint)) {
        if (! nsGenericHTMLElement::GetImageBorderAttributeImpact(aAttribute, aHint)) {
          aHint = NS_STYLE_HINT_CONTENT;
        }
      }
    }
  }
  return NS_OK;
}


NS_IMETHODIMP
nsHTMLEmbedElement::GetAttributeMappingFunctions(nsMapAttributesFunc& aFontMapFunc,
                                                 nsMapAttributesFunc& aMapFunc) const
{
  aFontMapFunc = nsnull;
  aMapFunc = &MapAttributesInto;
  return NS_OK;
}


NS_IMETHODIMP
nsHTMLEmbedElement::HandleDOMEvent(nsIPresContext& aPresContext,
                                    nsEvent* aEvent,
                                    nsIDOMEvent** aDOMEvent,
                                    PRUint32 aFlags,
                                    nsEventStatus& aEventStatus)
{
  return mInner.HandleDOMEvent(aPresContext, aEvent, aDOMEvent,
                               aFlags, aEventStatus);
}