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da4e8b2b2b
Since the queued task callback is already capturing the media element weakly, we may as well directly use that in the steps that need to interact with the element, which is the majority of them. Also, root the element in the callback. This ensures that any queued tasks will fire events before the element gets collected.
66 lines
2.1 KiB
C++
66 lines
2.1 KiB
C++
/*
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* Copyright (c) 2023, Tim Flynn <trflynn89@serenityos.org>
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* Copyright (c) 2025, Gregory Bertilson <gregory@ladybird.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/AudioTrack.h>
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#include <LibWeb/Bindings/Intrinsics.h>
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#include <LibWeb/DOM/Event.h>
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#include <LibWeb/HTML/AudioTrack.h>
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#include <LibWeb/HTML/AudioTrackList.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/Layout/Node.h>
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namespace Web::HTML {
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GC_DEFINE_ALLOCATOR(AudioTrack);
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AudioTrack::AudioTrack(JS::Realm& realm, GC::Ref<HTMLMediaElement> media_element, Media::Track const& track)
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: MediaTrackBase(realm, media_element, track)
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{
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}
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AudioTrack::~AudioTrack() = default;
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void AudioTrack::initialize(JS::Realm& realm)
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{
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WEB_SET_PROTOTYPE_FOR_INTERFACE(AudioTrack);
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Base::initialize(realm);
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}
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void AudioTrack::visit_edges(Cell::Visitor& visitor)
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{
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Base::visit_edges(visitor);
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visitor.visit(m_audio_track_list);
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}
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// https://html.spec.whatwg.org/multipage/media.html#dom-audiotrack-enabled
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void AudioTrack::set_enabled(bool enabled)
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{
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// On setting, it must enable the track if the new value is true, and disable it otherwise. (If the track is no
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// longer in an AudioTrackList object, then the track being enabled or disabled has no effect beyond changing the
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// value of the attribute on the AudioTrack object.)
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if (m_enabled == enabled)
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return;
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m_enabled = enabled;
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if (!m_audio_track_list)
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return;
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// Whenever an audio track in an AudioTrackList that was disabled is enabled, and whenever one that was enabled
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// is disabled, the user agent must queue a media element task given the media element to fire an event named
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// change at the AudioTrackList object.
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media_element().queue_a_media_element_task([audio_track_list = m_audio_track_list](HTMLMediaElement&) {
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audio_track_list->dispatch_event(DOM::Event::create(audio_track_list->realm(), HTML::EventNames::change));
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});
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media_element().set_audio_track_enabled({}, this, enabled);
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}
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}
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