Implement shadow dom slots (#35013)

* Implement slot-related algorithms

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

* Hook up slot elements to DOM creation logic

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

* Set a slot assignment mode for servo-internal shadow roots

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

* Assign slots when a slottable's slot attribute changes

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

* Properly compute slot name

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

* ./mach test-tidy

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

* Update <slot> name when name attribute changes

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

* Implement fast path for Node::assign_slottables_for_a_tree

assign_slottables_for_a_tree traverses all descendants of the node
and is potentially very expensive. If the node is not a shadow root
then assigning slottables to it won't have any effect, so we
take a fast path out.

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

* Move slottable data into ElementRareData

This shrinks all element descendants back to their
original size.

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

* Address review comments

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

* Update WPT expectations

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

---------

Signed-off-by: Simon Wülker <simon.wuelker@arcor.de>
This commit is contained in:
Simon Wülker 2025-01-19 15:05:05 +01:00 committed by GitHub
parent 8bb50fa3c9
commit dabe162d44
No known key found for this signature in database
GPG key ID: B5690EEEBB952194
31 changed files with 758 additions and 355 deletions

View file

@ -66,6 +66,7 @@ use crate::dom::htmlprogresselement::HTMLProgressElement;
use crate::dom::htmlquoteelement::HTMLQuoteElement;
use crate::dom::htmlscriptelement::HTMLScriptElement;
use crate::dom::htmlselectelement::HTMLSelectElement;
use crate::dom::htmlslotelement::HTMLSlotElement;
use crate::dom::htmlsourceelement::HTMLSourceElement;
use crate::dom::htmlspanelement::HTMLSpanElement;
use crate::dom::htmlstyleelement::HTMLStyleElement;
@ -357,6 +358,7 @@ pub(crate) fn create_native_html_element(
local_name!("script") => make!(HTMLScriptElement, creator),
local_name!("section") => make!(HTMLElement),
local_name!("select") => make!(HTMLSelectElement),
local_name!("slot") => make!(HTMLSlotElement),
local_name!("small") => make!(HTMLElement),
local_name!("source") => make!(HTMLSourceElement),
// https://html.spec.whatwg.org/multipage/#other-elements,-attributes-and-apis:spacer