void
DOMSVGPointList::MaybeInsertNullInAnimValListAt(uint32_t aIndex)
{
MOZ_ASSERT(!IsAnimValList(), "call from baseVal to animVal");
if (!AnimListMirrorsBaseList()) {
return;
}
// The anim val list is in sync with the base val list
DOMSVGPointList *animVal =
GetDOMWrapperIfExists(InternalAList().GetAnimValKey());
MOZ_ASSERT(animVal, "AnimListMirrorsBaseList() promised a non-null animVal");
MOZ_ASSERT(animVal->mItems.Length() == mItems.Length(),
"animVal list not in sync!");
MOZ_ALWAYS_TRUE(animVal->mItems.InsertElementAt(aIndex, nullptr, fallible));
UpdateListIndicesFromIndex(animVal->mItems, aIndex + 1);
}
bool
DOMSVGPointList::AnimListMirrorsBaseList() const
{
return GetDOMWrapperIfExists(InternalAList().GetAnimValKey()) &&
!AttrIsAnimating();
}