String MediaControlsHost::displayNameForTrack(TextTrack* track)
{
if (!track)
return emptyString();
Page* page = m_mediaElement->document().page();
if (!page)
return emptyString();
CaptionUserPreferences* captionPreferences = page->group().captionPreferences();
return captionPreferences->displayNameForTrack(track);
}
void MediaControlClosedCaptionsTrackListElement::rebuildTrackListMenu()
{
#if ENABLE(VIDEO_TRACK)
// Remove any existing content.
removeChildren();
m_menuItems.clear();
m_menuToTrackMap.clear();
if (!mediaController()->hasClosedCaptions())
return;
HTMLMediaElement* mediaElement = toParentMediaElement(this);
if (!mediaElement)
return;
TextTrackList* trackList = mediaElement->textTracks();
if (!trackList || !trackList->length())
return;
Document* doc = document();
if (!document()->page())
return;
CaptionUserPreferences* captionPreferences = document()->page()->group().captionPreferences();
Vector<RefPtr<TextTrack> > tracksForMenu = captionPreferences->sortedTrackListForMenu(trackList);
RefPtr<Element> captionsHeader = doc->createElement(h3Tag, ASSERT_NO_EXCEPTION);
captionsHeader->appendChild(doc->createTextNode(textTrackSubtitlesText()));
appendChild(captionsHeader);
RefPtr<Element> captionsMenuList = doc->createElement(ulTag, ASSERT_NO_EXCEPTION);
for (unsigned i = 0, length = tracksForMenu.size(); i < length; ++i) {
RefPtr<TextTrack> textTrack = tracksForMenu[i];
RefPtr<Element> menuItem = doc->createElement(liTag, ASSERT_NO_EXCEPTION);
menuItem->appendChild(doc->createTextNode(captionPreferences->displayNameForTrack(textTrack.get())));
captionsMenuList->appendChild(menuItem);
m_menuItems.append(menuItem);
m_menuToTrackMap.add(menuItem, textTrack);
}
appendChild(captionsMenuList);
#endif
}
