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LibWeb/HTML: Use DOM's post connection steps for <script> elements

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This aligns our behaviour with WebKit and Chrome.

See: ddd2d0dd
This commit is contained in:
Shannon Booth 2024-12-10 19:35:21 +13:00 • committed by Luke Wilde
parent 02efb64e64
commit 0a216f9c14
Notes: github-actions[bot] 2024-12-10 10:39:52 +00:00
6 changed files with 82 additions and 16 deletions
Libraries/LibWeb/HTML
HTMLScriptElement.cpp

41
Libraries/LibWeb/HTML/HTMLScriptElement.cpp
View file

@ -59,13 +59,13 @@ void HTMLScriptElement::attribute_changed(FlyString const& name, Optional<String
} else if (name == HTML::AttributeNames::referrerpolicy) {
m_referrer_policy = ReferrerPolicy::from_string(value.value_or(""_string)).value_or(ReferrerPolicy::ReferrerPolicy::EmptyString);
} else if (name == HTML::AttributeNames::src) {
// https://html.spec.whatwg.org/multipage/scripting.html#script-processing-model
// When a script element el that is not parser-inserted experiences one of the events listed in the following list, the user agent must immediately prepare the script element el:
// - [...]
// - The script element is connected and has a src attribute set where previously the element had no such attribute.
if (!is_parser_inserted() && is_connected() && value.has_value() && !old_value.has_value()) {
prepare_script();
}
// https://html.spec.whatwg.org/multipage/scripting.html#script-processing-model:html-element-post-connection-steps-6
// 1. If namespace is not null, then return.
if (namespace_.has_value())
return;
// 2. If localName is src, then run the script HTML element post-connection steps, given element.
post_connection();
} else if (name == HTML::AttributeNames::async) {
// https://html.spec.whatwg.org/multipage/scripting.html#script-processing-model:script-force-async
// When an async attribute is added to a script element el, the user agent must set el's force async to false.
@ -586,15 +586,26 @@ void HTMLScriptElement::prepare_script()
}
}
void HTMLScriptElement::inserted()
// https://html.spec.whatwg.org/multipage/scripting.html#script-processing-model:html-element-post-connection-steps-4
void HTMLScriptElement::children_changed()
{
if (!is_parser_inserted()) {
// FIXME: Only do this if the element was previously not connected.
if (is_connected()) {
prepare_script();
}
}
HTMLElement::inserted();
// 1. Run the script HTML element post-connection steps, given the script element.
post_connection();
}
// https://html.spec.whatwg.org/multipage/scripting.html#script-processing-model:prepare-the-script-element-5
void HTMLScriptElement::post_connection()
{
// 1. If insertedNode is not connected, then return.
if (!is_connected())
return;
// 2. If insertedNode is parser-inserted, then return.
if (is_parser_inserted())
return;
// 3. Prepare the script element given insertedNode.
prepare_script();
}
// https://html.spec.whatwg.org/multipage/scripting.html#mark-as-ready