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/*
* Copyright (c) 2023, Tim Flynn <trflynn89@serenityos.org>
*
* SPDX-License-Identifier: BSD-2-Clause
*/
#include <LibJS/Runtime/Realm.h>
#include <LibJS/Runtime/VM.h>
#include <LibWeb/Bindings/Intrinsics.h>
#include <LibWeb/Bindings/VideoTrackListPrototype.h>
#include <LibWeb/HTML/EventNames.h>
#include <LibWeb/HTML/VideoTrackList.h>
namespace Web::HTML {
VideoTrackList::VideoTrackList(JS::Realm& realm)
: DOM::EventTarget(realm)
, m_video_tracks(realm.heap())
{
}
JS::ThrowCompletionOr<void> VideoTrackList::initialize(JS::Realm& realm)
{
MUST_OR_THROW_OOM(Base::initialize(realm));
set_prototype(&Bindings::ensure_web_prototype<Bindings::VideoTrackListPrototype>(realm, "VideoTrackList"));
return {};
}
// https://html.spec.whatwg.org/multipage/media.html#dom-tracklist-item
JS::ThrowCompletionOr<Optional<JS::PropertyDescriptor>> VideoTrackList::internal_get_own_property(JS::PropertyKey const& property_name) const
{
// To determine the value of an indexed property for a given index index in an AudioTrackList or VideoTrackList
// object list, the user agent must return the AudioTrack or VideoTrack object that represents the indexth track
// in list.
if (property_name.is_number()) {
if (auto index = property_name.as_number(); index < m_video_tracks.size()) {
JS::PropertyDescriptor descriptor;
descriptor.value = m_video_tracks.at(index);
return descriptor;
}
}
return Base::internal_get_own_property(property_name);
}
ErrorOr<void> VideoTrackList::add_track(Badge<HTMLMediaElement>, JS::NonnullGCPtr<VideoTrack> video_track)
{
TRY(m_video_tracks.try_append(video_track));
video_track->set_video_track_list({}, this);
return {};
}
void VideoTrackList::remove_all_tracks(Badge<HTMLMediaElement>)
{
m_video_tracks.clear();
}
// https://html.spec.whatwg.org/multipage/media.html#dom-videotracklist-gettrackbyid
JS::GCPtr<VideoTrack> VideoTrackList::get_track_by_id(StringView id) const
{
// The AudioTrackList getTrackById(id) and VideoTrackList getTrackById(id) methods must return the first AudioTrack
// or VideoTrack object (respectively) in the AudioTrackList or VideoTrackList object (respectively) whose identifier
// is equal to the value of the id argument (in the natural order of the list, as defined above).
auto it = m_video_tracks.find_if([&](auto const& video_track) {
return video_track->id() == id;
});
// When no tracks match the given argument, the methods must return null.
if (it == m_video_tracks.end())
return nullptr;
return *it;
}
// https://html.spec.whatwg.org/multipage/media.html#dom-videotracklist-selectedindex
i32 VideoTrackList::selected_index() const
{
// The VideoTrackList selectedIndex attribute must return the index of the currently selected track, if any.
auto it = m_video_tracks.find_if([&](auto const& video_track) {
return video_track->selected();
});
// If the VideoTrackList object does not currently represent any tracks, or if none of the tracks are selected,
// it must instead return −1.
if (it == m_video_tracks.end())
return -1;
return static_cast<i32>(it.index());
}
// https://html.spec.whatwg.org/multipage/media.html#handler-tracklist-onchange
void VideoTrackList::set_onchange(WebIDL::CallbackType* event_handler)
{
set_event_handler_attribute(HTML::EventNames::change, event_handler);
}
// https://html.spec.whatwg.org/multipage/media.html#handler-tracklist-onchange
WebIDL::CallbackType* VideoTrackList::onchange()
{
return event_handler_attribute(HTML::EventNames::change);
}
// https://html.spec.whatwg.org/multipage/media.html#handler-tracklist-onaddtrack
void VideoTrackList::set_onaddtrack(WebIDL::CallbackType* event_handler)
{
set_event_handler_attribute(HTML::EventNames::addtrack, event_handler);
}
// https://html.spec.whatwg.org/multipage/media.html#handler-tracklist-onaddtrack
WebIDL::CallbackType* VideoTrackList::onaddtrack()
{
return event_handler_attribute(HTML::EventNames::addtrack);
}
// https://html.spec.whatwg.org/multipage/media.html#handler-tracklist-onremovetrack
void VideoTrackList::set_onremovetrack(WebIDL::CallbackType* event_handler)
{
set_event_handler_attribute(HTML::EventNames::removetrack, event_handler);
}
// https://html.spec.whatwg.org/multipage/media.html#handler-tracklist-onremovetrack
WebIDL::CallbackType* VideoTrackList::onremovetrack()
{
return event_handler_attribute(HTML::EventNames::removetrack);
}
}
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