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Support ::part selector (#37307)

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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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9
components/script/dom/node.rs
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@ -1583,6 +1583,7 @@ pub(crate) unsafe fn from_untrusted_node_address(candidate: UntrustedNodeAddress
pub(crate) trait LayoutNodeHelpers<'dom> {
fn type_id_for_layout(self) -> NodeTypeId;
fn parent_node_ref(self) -> Option<LayoutDom<'dom, Node>>;
fn composed_parent_node_ref(self) -> Option<LayoutDom<'dom, Node>>;
fn first_child_ref(self) -> Option<LayoutDom<'dom, Node>>;
fn last_child_ref(self) -> Option<LayoutDom<'dom, Node>>;
@ -1645,7 +1646,7 @@ pub(crate) trait LayoutNodeHelpers<'dom> {
impl<'dom> LayoutDom<'dom, Node> {
#[inline]
#[allow(unsafe_code)]
fn parent_node_ref(self) -> Option<LayoutDom<'dom, Node>> {
pub(crate) fn parent_node_ref(self) -> Option<LayoutDom<'dom, Node>> {
unsafe { self.unsafe_get().parent_node.get_inner_as_layout() }
}
}
@ -1661,6 +1662,12 @@ impl<'dom> LayoutNodeHelpers<'dom> for LayoutDom<'dom, Node> {
(*self).is::<Element>()
}
#[inline]
#[allow(unsafe_code)]
fn parent_node_ref(self) -> Option<LayoutDom<'dom, Node>> {
unsafe { self.unsafe_get().parent_node.get_inner_as_layout() }
}
#[inline]
fn composed_parent_node_ref(self) -> Option<LayoutDom<'dom, Node>> {
let parent = self.parent_node_ref();