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Implement declarative shadow dom (#34964)

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* Implement declarative shadow dom

Signed-off-by: batu_hoang <longvatrong111@gmail.com>

* Set allowDeclarativeShadowRoots false for innerHTML

Signed-off-by: batu_hoang <longvatrong111@gmail.com>

* Enable allowDeclarativeShadowRoots for Document

Signed-off-by: batu_hoang <longvatrong111@gmail.com>

* Expose HTMLTemplateElement to js

Signed-off-by: batu_hoang <longvatrong111@gmail.com>

* Implemenet setHTMLUnsafe and add more test cases

Signed-off-by: batu_hoang <longvatrong111@gmail.com>

* Declarative shadow dom: minor updates and expected test result update

Signed-off-by: batu_hoang <longvatrong111@gmail.com>

* Shadow-dom: add more test cases

Signed-off-by: batu_hoang <longvatrong111@gmail.com>

* Update comments according to the spec

Signed-off-by: batu_hoang <longvatrong111@gmail.com>

* Bump html5ever version

Signed-off-by: batu_hoang <longvatrong111@gmail.com>

---------

Signed-off-by: batu_hoang <longvatrong111@gmail.com>
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batu_hoang 2025-03-17 17:41:34 +08:00 • committed by GitHub
parent f483a3d34b
commit 28c8c1df0c
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44 changed files with 360 additions and 1965 deletions
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35
components/script/dom/element.rs
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@ -2076,7 +2076,7 @@ impl Element {
) -> Fallible<DomRoot<DocumentFragment>> {
// Steps 1-2.
// TODO(#11995): XML case.
let new_children = ServoParser::parse_html_fragment(self, markup, can_gc);
let new_children = ServoParser::parse_html_fragment(self, markup, false, can_gc);
// Step 3.
// See https://github.com/w3c/DOM-Parsing/issues/61.
let context_document = {
@ -2857,6 +2857,39 @@ impl ElementMethods<crate::DomTypeHolder> for Element {
self.client_rect(can_gc).size.height
}
/// <https://html.spec.whatwg.org/multipage/#dom-element-sethtmlunsafe>
fn SetHTMLUnsafe(&self, html: DOMString, can_gc: CanGc) {
// Step 2. Let target be this's template contents if this is a template element; otherwise this.
let target = if let Some(template) = self.downcast::<HTMLTemplateElement>() {
DomRoot::upcast(template.Content(can_gc))
} else {
DomRoot::from_ref(self.upcast())
};
// Step 3. Unsafely set HTML given target, this, and compliantHTML.
// Let newChildren be the result of the HTML fragment parsing algorithm.
let new_children = ServoParser::parse_html_fragment(self, html, true, can_gc);
let context_document = {
if let Some(template) = self.downcast::<HTMLTemplateElement>() {
template.Content(can_gc).upcast::<Node>().owner_doc()
} else {
self.owner_document()
}
};
// Let fragment be a new DocumentFragment whose node document is contextElement's node document.
let frag = DocumentFragment::new(&context_document, can_gc);
// For each node in newChildren, append node to fragment.
for child in new_children {
frag.upcast::<Node>().AppendChild(&child).unwrap();
}
// Replace all with fragment within target.
Node::replace_all(Some(frag.upcast()), &target);
}
/// <https://html.spec.whatwg.org/multipage/#dom-element-innerhtml>
fn GetInnerHTML(&self) -> Fallible<DOMString> {
let qname = QualName::new(