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https://github.com/LadybirdBrowser/ladybird.git
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c0d7f748ed
This commit introduces a WEB_SET_PROTOTYPE_FOR_INTERFACE macro that caches the interface name in a local static FlyString. This means that we only pay for FlyString-from-literal lookup once per browser lifetime instead of every time the interface is instantiated.
131 lines
4.4 KiB
C++
131 lines
4.4 KiB
C++
/*
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* Copyright (c) 2023, Tim Flynn <trflynn89@serenityos.org>
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*
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* SPDX-License-Identifier: BSD-2-Clause
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*/
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#include <LibJS/Runtime/Realm.h>
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#include <LibJS/Runtime/VM.h>
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#include <LibWeb/Bindings/Intrinsics.h>
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#include <LibWeb/Bindings/VideoTrackListPrototype.h>
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#include <LibWeb/HTML/EventNames.h>
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#include <LibWeb/HTML/VideoTrackList.h>
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namespace Web::HTML {
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JS_DEFINE_ALLOCATOR(VideoTrackList);
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VideoTrackList::VideoTrackList(JS::Realm& realm)
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: DOM::EventTarget(realm, MayInterfereWithIndexedPropertyAccess::Yes)
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, m_video_tracks(realm.heap())
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{
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}
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void VideoTrackList::initialize(JS::Realm& realm)
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{
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Base::initialize(realm);
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WEB_SET_PROTOTYPE_FOR_INTERFACE(VideoTrackList);
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}
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// https://html.spec.whatwg.org/multipage/media.html#dom-tracklist-item
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JS::ThrowCompletionOr<Optional<JS::PropertyDescriptor>> VideoTrackList::internal_get_own_property(JS::PropertyKey const& property_name) const
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{
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// To determine the value of an indexed property for a given index index in an AudioTrackList or VideoTrackList
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// object list, the user agent must return the AudioTrack or VideoTrack object that represents the indexth track
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// in list.
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if (property_name.is_number()) {
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if (auto index = property_name.as_number(); index < m_video_tracks.size()) {
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JS::PropertyDescriptor descriptor;
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descriptor.value = m_video_tracks.at(index);
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return descriptor;
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}
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}
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return Base::internal_get_own_property(property_name);
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}
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ErrorOr<void> VideoTrackList::add_track(Badge<HTMLMediaElement>, JS::NonnullGCPtr<VideoTrack> video_track)
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{
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TRY(m_video_tracks.try_append(video_track));
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video_track->set_video_track_list({}, this);
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return {};
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}
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void VideoTrackList::remove_all_tracks(Badge<HTMLMediaElement>)
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{
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m_video_tracks.clear();
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}
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// https://html.spec.whatwg.org/multipage/media.html#dom-videotracklist-gettrackbyid
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JS::GCPtr<VideoTrack> VideoTrackList::get_track_by_id(StringView id) const
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{
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// The AudioTrackList getTrackById(id) and VideoTrackList getTrackById(id) methods must return the first AudioTrack
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// or VideoTrack object (respectively) in the AudioTrackList or VideoTrackList object (respectively) whose identifier
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// is equal to the value of the id argument (in the natural order of the list, as defined above).
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auto it = m_video_tracks.find_if([&](auto const& video_track) {
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return video_track->id() == id;
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});
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// When no tracks match the given argument, the methods must return null.
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if (it == m_video_tracks.end())
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return nullptr;
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return *it;
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}
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// https://html.spec.whatwg.org/multipage/media.html#dom-videotracklist-selectedindex
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i32 VideoTrackList::selected_index() const
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{
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// The VideoTrackList selectedIndex attribute must return the index of the currently selected track, if any.
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auto it = m_video_tracks.find_if([&](auto const& video_track) {
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return video_track->selected();
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});
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// If the VideoTrackList object does not currently represent any tracks, or if none of the tracks are selected,
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// it must instead return −1.
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if (it == m_video_tracks.end())
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return -1;
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return static_cast<i32>(it.index());
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}
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// https://html.spec.whatwg.org/multipage/media.html#handler-tracklist-onchange
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void VideoTrackList::set_onchange(WebIDL::CallbackType* event_handler)
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{
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set_event_handler_attribute(HTML::EventNames::change, event_handler);
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}
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// https://html.spec.whatwg.org/multipage/media.html#handler-tracklist-onchange
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WebIDL::CallbackType* VideoTrackList::onchange()
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{
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return event_handler_attribute(HTML::EventNames::change);
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}
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// https://html.spec.whatwg.org/multipage/media.html#handler-tracklist-onaddtrack
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void VideoTrackList::set_onaddtrack(WebIDL::CallbackType* event_handler)
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{
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set_event_handler_attribute(HTML::EventNames::addtrack, event_handler);
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}
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// https://html.spec.whatwg.org/multipage/media.html#handler-tracklist-onaddtrack
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WebIDL::CallbackType* VideoTrackList::onaddtrack()
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{
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return event_handler_attribute(HTML::EventNames::addtrack);
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}
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// https://html.spec.whatwg.org/multipage/media.html#handler-tracklist-onremovetrack
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void VideoTrackList::set_onremovetrack(WebIDL::CallbackType* event_handler)
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{
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set_event_handler_attribute(HTML::EventNames::removetrack, event_handler);
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}
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// https://html.spec.whatwg.org/multipage/media.html#handler-tracklist-onremovetrack
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WebIDL::CallbackType* VideoTrackList::onremovetrack()
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{
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return event_handler_attribute(HTML::EventNames::removetrack);
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}
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}
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