void HTMLTrackElement::scheduleLoad()
{
WTF_LOG(Media, "HTMLTrackElement::scheduleLoad");
// 1. If another occurrence of this algorithm is already running for this text track and its track element,
// abort these steps, letting that other algorithm take care of this element.
if (m_loadTimer.isActive())
return;
// 2. If the text track's text track mode is not set to one of hidden or showing, abort these steps.
if (ensureTrack()->mode() != TextTrack::hiddenKeyword() && ensureTrack()->mode() != TextTrack::showingKeyword())
return;
// 3. If the text track's track element does not have a media element as a parent, abort these steps.
if (!mediaElement())
return;
// 4. Run the remainder of these steps asynchronously, allowing whatever caused these steps to run to continue.
m_loadTimer.startOneShot(0, FROM_HERE);
}
void HTMLTrackElement::scheduleLoad()
{
WTF_LOG(Media, "HTMLTrackElement::scheduleLoad");
// 1. If another occurrence of this algorithm is already running for this text track and its track element,
// abort these steps, letting that other algorithm take care of this element.
if (m_loadTimer.isActive())
return;
// 2. If the text track's text track mode is not set to one of hidden or showing, abort these steps.
if (ensureTrack()->mode() != TextTrack::hiddenKeyword() && ensureTrack()->mode() != TextTrack::showingKeyword())
return;
// 3. If the text track's track element does not have a media element as a parent, abort these steps.
if (!mediaElement())
return;
// 4. Run the remainder of these steps in parallel, allowing whatever caused these steps to run to continue.
m_loadTimer.startOneShot(0, BLINK_FROM_HERE);
// 5. Top: Await a stable state. The synchronous section consists of the following steps. (The steps in the
// synchronous section are marked with [X])
// FIXME: We use a timer to approximate a "stable state" - i.e. this is not 100% per spec.
}
void HTMLTrackElement::loadTimerFired(Timer<HTMLTrackElement>*)
{
if (!fastHasAttribute(srcAttr))
return;
WTF_LOG(Media, "HTMLTrackElement::loadTimerFired");
// 6. Set the text track readiness state to loading.
setReadyState(HTMLTrackElement::LOADING);
// 7. Let URL be the track URL of the track element.
KURL url = getNonEmptyURLAttribute(srcAttr);
// 8. If the track element's parent is a media element then let CORS mode be the state of the parent media
// element's crossorigin content attribute. Otherwise, let CORS mode be No CORS.
if (!canLoadUrl(url)) {
didCompleteLoad(HTMLTrackElement::Failure);
return;
}
ensureTrack()->scheduleLoad(url);
}
HTMLTrackElement::ReadyState HTMLTrackElement::readyState()
{
return static_cast<ReadyState>(ensureTrack()->readinessState());
}
void HTMLTrackElement::setReadyState(ReadyState state)
{
ensureTrack()->setReadinessState(static_cast<TextTrack::ReadinessState>(state));
if (HTMLMediaElement* parent = mediaElement())
return parent->textTrackReadyStateChanged(m_track.get());
}
TextTrack* HTMLTrackElement::track()
{
return ensureTrack();
}