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nsSVGStylableElement.cpp

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#include "nsSVGStylableElement.h"
#include "nsICSSOMFactory.h"
#include "nsSVGAnimatedString.h"
#include "nsSVGAtoms.h"
#include "nsDOMCSSDeclaration.h"

static NS_DEFINE_CID(kCSSOMFactoryCID, NS_CSSOMFACTORY_CID);

//----------------------------------------------------------------------
// nsISupports methods

NS_IMPL_ADDREF_INHERITED(nsSVGStylableElement, nsSVGStylableElementBase)
NS_IMPL_RELEASE_INHERITED(nsSVGStylableElement, nsSVGStylableElementBase)

NS_INTERFACE_MAP_BEGIN(nsSVGStylableElement)
  NS_INTERFACE_MAP_ENTRY(nsIDOMSVGStylable)
NS_INTERFACE_MAP_END_INHERITING(nsSVGStylableElementBase)

//----------------------------------------------------------------------
// Implementation

nsSVGStylableElement::nsSVGStylableElement(nsINodeInfo *aNodeInfo)
  : nsSVGStylableElementBase(aNodeInfo)
{

}

nsresult
nsSVGStylableElement::Init()
{
  nsresult rv;

  // Create mapped properties:

  // DOM property: className, #IMPLIED attrib: class
  {
    mClassName = new nsSVGClassValue;
    NS_ENSURE_TRUE(mClassName, NS_ERROR_OUT_OF_MEMORY);
    rv = AddMappedSVGValue(nsSVGAtoms::_class,
                     NS_STATIC_CAST(nsIDOMSVGAnimatedString*, mClassName),
                     kNameSpaceID_None);
    NS_ENSURE_SUCCESS(rv, rv);
  }

  return rv;
}

//----------------------------------------------------------------------
// nsIStyledContent methods

const nsAttrValue*
nsSVGStylableElement::GetClasses() const
{
  return mClassName->GetAttrValue();
}

NS_IMETHODIMP_(PRBool)
nsSVGStylableElement::HasClass(nsIAtom* aClass, PRBool aCaseSensitive) const
{
  NS_ASSERTION(aCaseSensitive, "svg should always be casesensitive");

  const nsAttrValue* val = mClassName->GetAttrValue();
  if (val->Type() == nsAttrValue::eAtom) {
    return aClass == val->GetAtomValue();
  }
  if (val->Type() == nsAttrValue::eAtomArray) {
    return val->GetAtomArrayValue()->IndexOf(aClass) >= 0;
  }

  return PR_FALSE;
}

//----------------------------------------------------------------------
// nsIDOMSVGStylable methods

/* readonly attribute nsIDOMSVGAnimatedString className; */
NS_IMETHODIMP
nsSVGStylableElement::GetClassName(nsIDOMSVGAnimatedString** aClassName)
{
  NS_ADDREF(*aClassName = mClassName);

  return NS_OK;
}

/* readonly attribute nsIDOMCSSStyleDeclaration style; */
NS_IMETHODIMP
nsSVGStylableElement::GetStyle(nsIDOMCSSStyleDeclaration** aStyle)
{
  nsDOMSlots *slots = GetDOMSlots();

  if (!slots->mStyle) {
    nsICSSOMFactory* cssOMFactory = nsnull;
    // We could cache the factory here, but lets wait with that until
    // we share code with html here.
    nsresult rv = CallGetService(kCSSOMFactoryCID, &cssOMFactory);
    NS_ENSURE_SUCCESS(rv, rv);

    rv = cssOMFactory->
      CreateDOMCSSAttributeDeclaration(this, getter_AddRefs(slots->mStyle));
    NS_ENSURE_SUCCESS(rv, rv);
  }

  NS_ADDREF(*aStyle = slots->mStyle);

  return NS_OK;
}

/* nsIDOMCSSValue getPresentationAttribute (in DOMString name); */
NS_IMETHODIMP
nsSVGStylableElement::GetPresentationAttribute(const nsAString& aName,
                                    nsIDOMCSSValue** aReturn)
{
  // Let's not implement this just yet. The CSSValue interface has been
  // deprecated by the CSS WG.
  // http://lists.w3.org/Archives/Public/www-style/2003Oct/0347.html

  return NS_ERROR_NOT_IMPLEMENTED;
}

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