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script: Implement Element::GetHTML and ShadowRoot::GetHTML (#36106)

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* Serialize html fragments without going through html5ever

Signed-off-by: Simon Wülker <simon.wuelker@arcor.de>

* Implement ShadowRoot::GetHtml / Element::GetHtml

Signed-off-by: Simon Wülker <simon.wuelker@arcor.de>

* Update WPT expectations

Signed-off-by: Simon Wülker <simon.wuelker@arcor.de>

* Propagate CanGc annotations

Signed-off-by: Simon Wülker <simon.wuelker@arcor.de>

---------

Signed-off-by: Simon Wülker <simon.wuelker@arcor.de>
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Simon Wülker 2025-03-23 20:04:23 +01:00 • committed by GitHub
parent 1c9f486f88
commit 19d5f5f06f
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12 changed files with 286 additions and 15941 deletions
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35
components/script/dom/node.rs
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@ -21,6 +21,7 @@ use constellation_traits::{
use devtools_traits::NodeInfo;
use dom_struct::dom_struct;
use euclid::default::{Rect, Size2D, Vector2D};
use html5ever::serialize::HtmlSerializer;
use html5ever::{Namespace, Prefix, QualName, namespace_url, ns, serialize as html_serialize};
use js::jsapi::JSObject;
use js::rust::HandleObject;
@ -110,6 +111,7 @@ use crate::dom::nodelist::NodeList;
use crate::dom::processinginstruction::ProcessingInstruction;
use crate::dom::range::WeakRangeVec;
use crate::dom::raredata::NodeRareData;
use crate::dom::servoparser::serialize_html_fragment;
use crate::dom::shadowroot::{IsUserAgentWidget, LayoutShadowRootHelpers, ShadowRoot};
use crate::dom::stylesheetlist::StyleSheetListOwner;
use crate::dom::svgsvgelement::{LayoutSVGSVGElementHelpers, SVGSVGElement};
@ -2862,22 +2864,34 @@ impl Node {
pub(crate) fn html_serialize(
&self,
traversal_scope: html_serialize::TraversalScope,
serialize_shadow_roots: bool,
shadow_roots: Vec<DomRoot<ShadowRoot>>,
can_gc: CanGc,
) -> DOMString {
let mut writer = vec![];
html_serialize::serialize(
let mut serializer = HtmlSerializer::new(
&mut writer,
&self,
html_serialize::SerializeOpts {
traversal_scope,
traversal_scope: traversal_scope.clone(),
..Default::default()
},
);
serialize_html_fragment(
self,
&mut serializer,
traversal_scope,
serialize_shadow_roots,
shadow_roots,
can_gc,
)
.expect("Cannot serialize node");
.expect("Serializing node failed");
// FIXME(ajeffrey): Directly convert UTF8 to DOMString
DOMString::from(String::from_utf8(writer).unwrap())
}
/// <https://w3c.github.io/DOM-Parsing/#dfn-xml-serialization>
pub(crate) fn xml_serialize(
&self,
traversal_scope: xml_serialize::TraversalScope,
@ -2895,14 +2909,23 @@ impl Node {
}
/// <https://html.spec.whatwg.org/multipage/#fragment-serializing-algorithm-steps>
pub(crate) fn fragment_serialization_algorithm(&self, require_well_formed: bool) -> DOMString {
pub(crate) fn fragment_serialization_algorithm(
&self,
require_well_formed: bool,
can_gc: CanGc,
) -> DOMString {
// Step 1. Let context document be node's node document.
let context_document = self.owner_document();
// Step 2. If context document is an HTML document, return the result of HTML fragment serialization algorithm
// with node, false, and « ».
if context_document.is_html_document() {
return self.html_serialize(html_serialize::TraversalScope::ChildrenOnly(None));
return self.html_serialize(
html_serialize::TraversalScope::ChildrenOnly(None),
false,
vec![],
can_gc,
);
}
// Step 3. Return the XML serialization of node given require well-formed.