Mozilla/mozilla/layout/html/content/src/nsHTMLScriptElement.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 1.1 (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 Netscape are
 * Copyright (C) 1998 Netscape Communications Corporation. All
 * Rights Reserved.
 *
 * Contributor(s): 
 */
#include "nsIDOMHTMLScriptElement.h"
#include "nsIScriptObjectOwner.h"
#include "nsIDOMEventReceiver.h"
#include "nsIHTMLContent.h"
#include "nsGenericHTMLElement.h"
#include "nsHTMLAtoms.h"
#include "nsHTMLIIDs.h"
#include "nsIStyleContext.h"
#include "nsIMutableStyleContext.h"
#include "nsStyleConsts.h"
#include "nsIPresContext.h"

static NS_DEFINE_IID(kIDOMHTMLScriptElementIID, NS_IDOMHTMLSCRIPTELEMENT_IID);

class nsHTMLScriptElement : public nsIDOMHTMLScriptElement,
                     public nsIJSScriptObject,
                     public nsIHTMLContent
{
public:
  nsHTMLScriptElement(nsIAtom* aTag);
  virtual ~nsHTMLScriptElement();

  // 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)

  // nsIDOMHTMLScriptElement
  NS_IMETHOD GetText(nsString& aText);
  NS_IMETHOD SetText(const nsString& aText);
  NS_IMETHOD GetHtmlFor(nsString& aHtmlFor);
  NS_IMETHOD SetHtmlFor(const nsString& aHtmlFor);
  NS_IMETHOD GetEvent(nsString& aEvent);
  NS_IMETHOD SetEvent(const nsString& aEvent);
  NS_IMETHOD GetCharset(nsString& aCharset);
  NS_IMETHOD SetCharset(const nsString& aCharset);
  NS_IMETHOD GetDefer(PRBool* aDefer);
  NS_IMETHOD SetDefer(PRBool aDefer);
  NS_IMETHOD GetSrc(nsString& aSrc);
  NS_IMETHOD SetSrc(const nsString& aSrc);
  NS_IMETHOD GetType(nsString& aType);
  NS_IMETHOD SetType(const nsString& aType);

  // nsIJSScriptObject
  NS_IMPL_IJSSCRIPTOBJECT_USING_GENERIC(mInner)

  // nsIContent
  NS_IMPL_ICONTENT_USING_GENERIC(mInner)

  // nsIHTMLContent
  NS_IMPL_IHTMLCONTENT_USING_GENERIC(mInner)

protected:
  nsGenericHTMLContainerElement mInner;
  nsString mText;
};

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


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

nsHTMLScriptElement::~nsHTMLScriptElement()
{
}

NS_IMPL_ADDREF(nsHTMLScriptElement)

NS_IMPL_RELEASE(nsHTMLScriptElement)

nsresult
nsHTMLScriptElement::QueryInterface(REFNSIID aIID, void** aInstancePtr)
{
  NS_IMPL_HTML_CONTENT_QUERY_INTERFACE(aIID, aInstancePtr, this)
  if (aIID.Equals(kIDOMHTMLScriptElementIID)) {
    nsIDOMHTMLScriptElement* tmp = this;
    *aInstancePtr = (void*) tmp;
    NS_ADDREF_THIS();
    return NS_OK;
  }
  return NS_NOINTERFACE;
}

nsresult
nsHTMLScriptElement::CloneNode(PRBool aDeep, nsIDOMNode** aReturn)
{
  nsHTMLScriptElement* it = new nsHTMLScriptElement(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
nsHTMLScriptElement::GetText(nsString& aValue)
{
  // XXX out of memory errors
  aValue = mText;
  return NS_OK;
}

NS_IMETHODIMP
nsHTMLScriptElement::SetText(const nsString& aValue)
{
  // XXX out of memory errors
  mText = aValue;
  return NS_OK;
}

NS_IMETHODIMP
nsHTMLScriptElement::GetHtmlFor(nsString& aValue)
{
  // XXX write me
//  mInner.GetAttribute(nsHTMLAtoms::charset, aValue);
  return NS_OK;
}

NS_IMETHODIMP
nsHTMLScriptElement::SetHtmlFor(const nsString& aValue)
{
  // XXX write me
//  return mInner.SetAttr(nsHTMLAtoms::charset, aValue);
  return NS_OK;
}

NS_IMETHODIMP
nsHTMLScriptElement::GetEvent(nsString& aValue)
{
  // XXX write me
//  mInner.GetAttribute(nsHTMLAtoms::charset, aValue);
  return NS_OK;
}

NS_IMETHODIMP
nsHTMLScriptElement::SetEvent(const nsString& aValue)
{
  // XXX write me
//  return mInner.SetAttr(nsHTMLAtoms::charset, aValue);
  return NS_OK;
}

NS_IMPL_STRING_ATTR(nsHTMLScriptElement, Charset, charset)
NS_IMPL_BOOL_ATTR(nsHTMLScriptElement, Defer, defer)
NS_IMPL_STRING_ATTR(nsHTMLScriptElement, Src, src)
NS_IMPL_STRING_ATTR(nsHTMLScriptElement, Type, type)

NS_IMETHODIMP
nsHTMLScriptElement::StringToAttribute(nsIAtom* aAttribute,
                                const nsString& aValue,
                                nsHTMLValue& aResult)
{
  return NS_CONTENT_ATTR_NOT_THERE;
}

NS_IMETHODIMP
nsHTMLScriptElement::AttributeToString(nsIAtom* aAttribute,
                                const nsHTMLValue& aValue,
                                nsString& aResult) const
{
  return mInner.AttributeToString(aAttribute, aValue, aResult);
}

static void
MapAttributesInto(const nsIHTMLMappedAttributes* aAttributes,
                  nsIMutableStyleContext* aContext,
                  nsIPresContext* aPresContext)
{
  nsGenericHTMLElement::MapCommonAttributesInto(aAttributes, aContext, aPresContext);
}

NS_IMETHODIMP
nsHTMLScriptElement::GetMappedAttributeImpact(const nsIAtom* aAttribute,
                                              PRInt32& aHint) const
{
  if (! nsGenericHTMLElement::GetCommonMappedAttributesImpact(aAttribute, aHint)) {
    aHint = NS_STYLE_HINT_CONTENT;
  }

  return NS_OK;
}

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


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


NS_IMETHODIMP
nsHTMLScriptElement::SizeOf(nsISizeOfHandler* aSizer, PRUint32* aResult) const
{
  if (!aResult) return NS_ERROR_NULL_POINTER;
#ifdef DEBUG
  PRUint32 sum;
  mInner.SizeOf(aSizer, &sum, sizeof(*this));
  PRUint32 ssize;
  mText.SizeOf(aSizer, &ssize);
  sum = sum - sizeof(mText) + ssize;
  *aResult = sum;
#endif
  return NS_OK;
}