nsresult
SVGAnimatedTransformList::SetBaseValueString(const nsAString& aValue)
{
  SVGTransformList newBaseValue;
  nsresult rv = newBaseValue.SetValueFromString(aValue);
  if (NS_FAILED(rv)) {
    return rv;
  }

  DOMSVGAnimatedTransformList *domWrapper =
    DOMSVGAnimatedTransformList::GetDOMWrapperIfExists(this);
  if (domWrapper) {
    // We must send this notification *before* changing mBaseVal! If the length
    // of our baseVal is being reduced, our baseVal's DOM wrapper list may have
    // to remove DOM items from itself, and any removed DOM items need to copy
    // their internal counterpart values *before* we change them.
    //
    domWrapper->InternalBaseValListWillChangeLengthTo(newBaseValue.Length());
  }

  // We don't need to call DidChange* here - we're only called by
  // nsSVGElement::ParseAttribute under nsGenericElement::SetAttr,
  // which takes care of notifying.

  rv = mBaseVal.CopyFrom(newBaseValue);
  if (NS_FAILED(rv) && domWrapper) {
    // Attempting to increase mBaseVal's length failed - reduce domWrapper
    // back to the same length:
    domWrapper->InternalBaseValListWillChangeLengthTo(mBaseVal.Length());
  } else {
    mIsAttrSet = true;
  }
  return rv;
}
void
SVGAnimatedTransformList::ClearBaseValue()
{
  DOMSVGAnimatedTransformList *domWrapper =
    DOMSVGAnimatedTransformList::GetDOMWrapperIfExists(this);
  if (domWrapper) {
    // We must send this notification *before* changing mBaseVal! (See above.)
    domWrapper->InternalBaseValListWillChangeLengthTo(0);
  }
  mBaseVal.Clear();
  mIsAttrSet = false;
  // Caller notifies
}