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			123 lines
		
	
	
	
		
			4.1 KiB
		
	
	
	
		
			C++
		
	
	
	
	
	
			
		
		
	
	
			123 lines
		
	
	
	
		
			4.1 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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| 
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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/AudioTrackListPrototype.h>
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| #include <LibWeb/Bindings/Intrinsics.h>
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| #include <LibWeb/HTML/AudioTrackList.h>
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| #include <LibWeb/HTML/EventNames.h>
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| 
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| namespace Web::HTML {
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| 
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| AudioTrackList::AudioTrackList(JS::Realm& realm)
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|     : DOM::EventTarget(realm)
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|     , m_audio_tracks(realm.heap())
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| {
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| }
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| 
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| JS::ThrowCompletionOr<void> AudioTrackList::initialize(JS::Realm& realm)
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| {
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|     MUST_OR_THROW_OOM(Base::initialize(realm));
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|     set_prototype(&Bindings::ensure_web_prototype<Bindings::AudioTrackListPrototype>(realm, "AudioTrackList"));
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| 
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|     return {};
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| }
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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>> AudioTrackList::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_audio_tracks.size()) {
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|             JS::PropertyDescriptor descriptor;
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|             descriptor.value = m_audio_tracks.at(index);
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| 
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|             return descriptor;
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|         }
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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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| 
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| ErrorOr<void> AudioTrackList::add_track(Badge<HTMLMediaElement>, JS::NonnullGCPtr<AudioTrack> audio_track)
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| {
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|     TRY(m_audio_tracks.try_append(audio_track));
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|     audio_track->set_audio_track_list({}, this);
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| 
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|     return {};
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| }
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| 
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| void AudioTrackList::remove_all_tracks(Badge<HTMLMediaElement>)
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| {
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|     m_audio_tracks.clear();
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| }
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| 
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| // https://html.spec.whatwg.org/multipage/media.html#dom-audiotracklist-gettrackbyid
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| JS::GCPtr<AudioTrack> AudioTrackList::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_audio_tracks.find_if([&](auto const& audio_track) {
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|         return audio_track->id() == id;
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|     });
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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_audio_tracks.end())
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|         return nullptr;
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| 
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|     return *it;
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| }
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| 
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| bool AudioTrackList::has_enabled_track() const
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| {
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|     auto it = m_audio_tracks.find_if([&](auto const& audio_track) {
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|         return audio_track->enabled();
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|     });
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| 
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|     return it != m_audio_tracks.end();
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| }
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| 
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| // https://html.spec.whatwg.org/multipage/media.html#handler-tracklist-onchange
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| void AudioTrackList::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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| 
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| // https://html.spec.whatwg.org/multipage/media.html#handler-tracklist-onchange
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| WebIDL::CallbackType* AudioTrackList::onchange()
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| {
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|     return event_handler_attribute(HTML::EventNames::change);
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| }
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| 
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| // https://html.spec.whatwg.org/multipage/media.html#handler-tracklist-onaddtrack
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| void AudioTrackList::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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| 
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| // https://html.spec.whatwg.org/multipage/media.html#handler-tracklist-onaddtrack
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| WebIDL::CallbackType* AudioTrackList::onaddtrack()
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| {
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|     return event_handler_attribute(HTML::EventNames::addtrack);
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| }
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| 
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| // https://html.spec.whatwg.org/multipage/media.html#handler-tracklist-onremovetrack
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| void AudioTrackList::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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| 
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| // https://html.spec.whatwg.org/multipage/media.html#handler-tracklist-onremovetrack
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| WebIDL::CallbackType* AudioTrackList::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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| }
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