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LibWeb: Implement HTMLMediaElement's autoplay attribute

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This commit is contained in:
Timothy Flynn 2023-04-17 07:24:50 -04:00 • committed by Andreas Kling
parent 1ffd533ea2
commit 229cc67fee
3 changed files with 52 additions and 10 deletions
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56
Userland/Libraries/LibWeb/HTML/HTMLMediaElement.cpp
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@ -335,7 +335,10 @@ WebIDL::ExceptionOr<void> HTMLMediaElement::load_element()
}
// FIXME: 7. Set the playbackRate attribute to the value of the defaultPlaybackRate attribute.
// FIXME: 8. Set the error attribute to null and the can autoplay flag to true.
// 8. Set the error attribute to null and the can autoplay flag to true.
// FIXME: Handle the error attribute.
m_can_autoplay = true;
// 9. Invoke the media element's resource selection algorithm.
TRY(select_resource());
@ -934,13 +937,25 @@ void HTMLMediaElement::set_ready_state(ReadyState ready_state)
dispatch_event(DOM::Event::create(this->realm(), HTML::EventNames::canplaythrough).release_value_but_fixme_should_propagate_errors());
});
// FIXME: If the element is not eligible for autoplay, then the user agent must abort these substeps.
// If the element is not eligible for autoplay, then the user agent must abort these substeps.
if (!is_eligible_for_autoplay())
return;
// FIXME: The user agent may run the following substeps:
// Set the paused attribute to false.
// If the element's show poster flag is true, set it to false and run the time marches on steps.
// Queue a media element task given the element to fire an event named play at the element.
// Notify about playing for the element.
// The user agent may run the following substeps:
{
// Set the paused attribute to false.
set_paused(false);
// FIXME: If the element's show poster flag is true, set it to false and run the time marches on steps.
// Queue a media element task given the element to fire an event named play at the element.
queue_a_media_element_task([this]() {
dispatch_event(DOM::Event::create(realm(), HTML::EventNames::play).release_value_but_fixme_should_propagate_errors());
});
// Notify about playing for the element.
notify_about_playing();
}
// FIXME: Alternatively, if the element is a video element, the user agent may start observing whether the element intersects the viewport. When the
// element starts intersecting the viewport, if the element is still eligible for autoplay, run the substeps above. Optionally, when the element
@ -1003,7 +1018,8 @@ WebIDL::ExceptionOr<void> HTMLMediaElement::play_element()
});
}
// FIXME: 5. Set the media element's can autoplay flag to false.
// 5. Set the media element's can autoplay flag to false.
m_can_autoplay = false;
return {};
}
@ -1011,7 +1027,8 @@ WebIDL::ExceptionOr<void> HTMLMediaElement::play_element()
// https://html.spec.whatwg.org/multipage/media.html#internal-pause-steps
WebIDL::ExceptionOr<void> HTMLMediaElement::pause_element()
{
// FIXME: 1. Set the media element's can autoplay flag to false.
// 1. Set the media element's can autoplay flag to false.
m_can_autoplay = false;
// 2. If the media element's paused attribute is false, run the following steps:
if (!paused()) {
@ -1146,6 +1163,27 @@ void HTMLMediaElement::set_paused(bool paused)
on_paused();
}
// https://html.spec.whatwg.org/multipage/media.html#eligible-for-autoplay
bool HTMLMediaElement::is_eligible_for_autoplay() const
{
// A media element is said to be eligible for autoplay when all of the following conditions are met:
return (
// Its can autoplay flag is true.
m_can_autoplay &&
// Its paused attribute is true.
paused() &&
// It has an autoplay attribute specified.
has_attribute(HTML::AttributeNames::autoplay) &&
// Its node document's active sandboxing flag set does not have the sandboxed automatic features browsing context flag set.
(document().active_sandboxing_flag_set().flags & SandboxingFlagSet::SandboxedAutomaticFeatures) == 0 &&
// Its node document is allowed to use the "autoplay" feature.
document().is_allowed_to_use_feature(DOM::PolicyControlledFeature::Autoplay));
}
// https://html.spec.whatwg.org/multipage/media.html#ended-playback
bool HTMLMediaElement::has_ended_playback() const
{