int TextTrackList::getTrackIndex(TextTrack& textTrack)
{
if (is<LoadableTextTrack>(textTrack))
return downcast<LoadableTextTrack>(textTrack).trackElementIndex();
if (textTrack.trackType() == TextTrack::AddTrack)
return m_elementTracks.size() + m_addTrackTracks.find(&textTrack);
if (textTrack.trackType() == TextTrack::InBand)
return m_elementTracks.size() + m_addTrackTracks.size() + m_inbandTracks.find(&textTrack);
ASSERT_NOT_REACHED();
return -1;
}
void TextTrackList::invalidateTrackIndexesAfterTrack(TextTrack& track)
{
Vector<RefPtr<TrackBase>>* tracks = nullptr;
switch (track.trackType()) {
case TextTrack::TrackElement:
tracks = &m_elementTracks;
for (auto& addTrack : m_addTrackTracks)
downcast<TextTrack>(addTrack.get())->invalidateTrackIndex();
for (auto& inbandTrack : m_inbandTracks)
downcast<TextTrack>(inbandTrack.get())->invalidateTrackIndex();
break;
case TextTrack::AddTrack:
tracks = &m_addTrackTracks;
for (auto& inbandTrack : m_inbandTracks)
downcast<TextTrack>(inbandTrack.get())->invalidateTrackIndex();
break;
case TextTrack::InBand:
tracks = &m_inbandTracks;
break;
default:
ASSERT_NOT_REACHED();
}
size_t index = tracks->find(&track);
if (index == notFound)
return;
for (size_t i = index; i < tracks->size(); ++i)
downcast<TextTrack>(*tracks->at(index)).invalidateTrackIndex();
}
