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Support ::part selector (#37307)

Browse source 
This is pretty much just wiring up the necessary stylo methods. Note
that the `exportparts` attribute is not yet supported, I'll do that in a
followup change

Testing: Covered by existing web platform tests.
This is the first half of https://github.com/servo/servo/issues/35349

Fixes https://github.com/servo/servo/issues/37325

---------

Signed-off-by: Simon Wülker <simon.wuelker@arcor.de>
This commit is contained in:
Simon Wülker 2025-06-09 12:17:28 +02:00 • committed by GitHub
parent 73ee36be00
commit 0fa3de3937
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36 changed files with 119 additions and 348 deletions
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8
components/script/layout_dom/node.rs
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@ -119,9 +119,7 @@ impl<'dom> style::dom::TNode for ServoLayoutNode<'dom> {
type ConcreteShadowRoot = ServoShadowRoot<'dom>;
fn parent_node(&self) -> Option<Self> {
self.node
.composed_parent_node_ref()
.map(Self::from_layout_js)
self.node.parent_node_ref().map(Self::from_layout_js)
}
fn first_child(&self) -> Option<Self> {
@ -302,8 +300,8 @@ impl<'dom> ThreadSafeLayoutNode<'dom> for ServoThreadSafeLayoutNode<'dom> {
}
fn parent_style(&self) -> Arc<ComputedValues> {
let parent = self.node.parent_node().unwrap().as_element().unwrap();
let parent_data = parent.borrow_data().unwrap();
let parent_element = self.node.traversal_parent().unwrap();
let parent_data = parent_element.borrow_data().unwrap();
parent_data.styles.primary().clone()
}