diff --git a/Libraries/LibWeb/HTML/HTMLSourceElement.cpp b/Libraries/LibWeb/HTML/HTMLSourceElement.cpp
index 721091c0a75..b654b273d8a 100644
--- a/Libraries/LibWeb/HTML/HTMLSourceElement.cpp
+++ b/Libraries/LibWeb/HTML/HTMLSourceElement.cpp
@@ -27,33 +27,35 @@ void HTMLSourceElement::initialize(JS::Realm& realm)
WEB_SET_PROTOTYPE_FOR_INTERFACE(HTMLSourceElement);
}
-// https://html.spec.whatwg.org/multipage/embedded-content.html#the-source-element:the-source-element-15
+// https://html.spec.whatwg.org/multipage/embedded-content.html#the-source-element:html-element-insertion-steps
void HTMLSourceElement::inserted()
{
// The source HTML element insertion steps, given insertedNode, are:
Base::inserted();
- // 1. If insertedNode's parent is a media element that has no src attribute and whose networkState has the value
- // NETWORK_EMPTY, then invoke that media element's resource selection algorithm.
- if (is(parent())) {
- auto& media_element = static_cast(*parent());
+ // 1. Let parent be insertedNode's parent.
+ auto* parent = this->parent();
- if (!media_element.has_attribute(HTML::AttributeNames::src) && media_element.network_state() == HTMLMediaElement::NetworkState::Empty)
- media_element.select_resource().release_value_but_fixme_should_propagate_errors();
+ // 2. If parent is a media element that has no src attribute and whose networkState has the value NETWORK_EMPTY,
+ // then invoke that media element's resource selection algorithm.
+ if (auto* media_element = as_if(parent); media_element
+ && !media_element->has_attribute(HTML::AttributeNames::src)
+ && media_element->network_state() == HTMLMediaElement::NetworkState::Empty) {
+ media_element->select_resource().release_value_but_fixme_should_propagate_errors();
}
- // FIXME: 2. If insertedNode's next sibling is an img element and its parent is a picture element, then, count this as a
- // relevant mutation for the img element.
+ // FIXME: 3. If parent is a picture element, then for each child of parent's children, if child is an img element, then
+ // count this as a relevant mutation for child.
}
-// https://html.spec.whatwg.org/multipage/embedded-content.html#the-source-element:the-source-element-16
+// https://html.spec.whatwg.org/multipage/embedded-content.html#the-source-element:html-element-removing-steps
void HTMLSourceElement::removed_from(DOM::Node* old_parent, DOM::Node& old_root)
{
// The source HTML element removing steps, given removedNode and oldParent, are:
Base::removed_from(old_parent, old_root);
- // FIXME: 1. If removedNode's next sibling was an img element and oldParent is a picture element, then, count this as a
- // relevant mutation for the img element.
+ // FIXME: 1. If oldParent is a picture element, then for each child of oldParent's children, if child is an img
+ // element, then count this as a relevant mutation for child.
}
}