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// Tom Kneeland (3/29/99)
//
//  Implementation of the Document Object Model Level 1 Core
//    Implementation of the Attr class
//

#include "txDOM.h"
#include "txAtoms.h"
#include "txXMLUtils.h"

Attr::Attr(nsIAtom *aPrefix, nsIAtom *aLocalName, PRInt32 aNamespaceID,
           Element *aOwnerElement, const nsAString &aValue) :
    NodeDefinition(Node::ATTRIBUTE_NODE, aLocalName, aValue,
                   aOwnerElement->getOwnerDocument()),
    mPrefix(aPrefix),
    mNamespaceID(aNamespaceID),
    mOwnerElement(aOwnerElement)
{
}

//
//Not implemented anymore, return null as an error.
//
Node* Attr::appendChild(Node* newChild)
{
  NS_ASSERTION(0, "not implemented");
  return nsnull;
}

nsresult
Attr::getNodeName(nsAString& aName) const
{
  if (mPrefix) {
    mPrefix->ToString(aName);
    aName.Append(PRUnichar(':'));
  }
  else {
    aName.Truncate();
  }

  const char* ASCIIAtom;
  mLocalName->GetUTF8String(&ASCIIAtom);
  AppendUTF8toUTF16(ASCIIAtom, aName);

  return NS_OK;
}

//
//Return the attributes local (unprefixed) name atom.
//
MBool Attr::getLocalName(nsIAtom** aLocalName)
{
  if (!aLocalName)
    return MB_FALSE;
  *aLocalName = mLocalName;
  NS_ADDREF(*aLocalName);
  return MB_TRUE;
}

//
//Return the namespace the attribute belongs to. If the attribute doesn't
//have a prefix it doesn't belong to any namespace per the namespace spec,
//and is handled in the constructor.
//
PRInt32 Attr::getNamespaceID()
{
  return mNamespaceID;
}

//
//Return the attributes owning element
//
Node* Attr::getXPathParent()
{
  return mOwnerElement;
}