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https://github.com/LadybirdBrowser/ladybird.git
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6caa2f99aa
With this commit, all PlaybackManager can do is autoplay a file from start to finish, with no pausing or seeking functionality. All audio playback functionality has been removed from HTMLMediaElement and HTMLAudioElement in anticipation of PlaybackManager taking that over, for both audio-only and audio/video.
92 lines
3.2 KiB
C++
92 lines
3.2 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 <AK/IDAllocator.h>
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#include <AK/Time.h>
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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/VideoTrackPrototype.h>
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#include <LibWeb/DOM/Event.h>
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#include <LibWeb/HTML/EventNames.h>
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#include <LibWeb/HTML/HTMLMediaElement.h>
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#include <LibWeb/HTML/VideoTrack.h>
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#include <LibWeb/HTML/VideoTrackList.h>
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namespace Web::HTML {
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GC_DEFINE_ALLOCATOR(VideoTrack);
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static IDAllocator s_video_track_id_allocator;
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VideoTrack::VideoTrack(JS::Realm& realm, GC::Ref<HTMLMediaElement> media_element, Media::Track const& track)
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: PlatformObject(realm)
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, m_media_element(media_element)
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, m_track_in_playback_manager(track)
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{
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}
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VideoTrack::~VideoTrack()
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{
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auto id = m_id.to_number<int>();
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VERIFY(id.has_value());
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s_video_track_id_allocator.deallocate(id.value());
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}
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void VideoTrack::initialize(JS::Realm& realm)
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{
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WEB_SET_PROTOTYPE_FOR_INTERFACE(VideoTrack);
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Base::initialize(realm);
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auto id = s_video_track_id_allocator.allocate();
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m_id = String::number(id);
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}
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void VideoTrack::visit_edges(Cell::Visitor& visitor)
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{
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Base::visit_edges(visitor);
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visitor.visit(m_media_element);
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visitor.visit(m_video_track_list);
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}
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// https://html.spec.whatwg.org/multipage/media.html#dom-videotrack-selected
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void VideoTrack::set_selected(bool selected)
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{
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// On setting, it must select the track if the new value is true, and unselect it otherwise.
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if (m_selected == selected)
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return;
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// If the track is in a VideoTrackList, then all the other VideoTrack objects in that list must be unselected. (If the track is
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// no longer in a VideoTrackList object, then the track being selected or unselected has no effect beyond changing the value of
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// the attribute on the VideoTrack object.)
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if (m_video_track_list) {
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for (auto video_track : m_video_track_list->video_tracks()) {
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if (video_track.ptr() != this)
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video_track->m_selected = false;
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}
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// Whenever a track in a VideoTrackList that was previously not selected is selected, and whenever the selected track in a
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// VideoTrackList is unselected without a new track being selected in its stead, the user agent must queue a media element
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// task given the media element to fire an event named change at the VideoTrackList object. This task must be queued before
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// the task that fires the resize event, if any.
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auto previously_unselected_track_is_selected = !m_selected && selected;
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auto selected_track_was_unselected_without_another_selection = m_selected && !selected;
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if (previously_unselected_track_is_selected || selected_track_was_unselected_without_another_selection) {
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m_media_element->queue_a_media_element_task([this]() {
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m_video_track_list->dispatch_event(DOM::Event::create(realm(), HTML::EventNames::change));
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});
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}
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}
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m_selected = selected;
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// AD-HOC: Inform the element node that we have (un)selected a video track for layout.
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m_media_element->set_selected_video_track({}, m_selected ? this : nullptr);
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}
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}
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