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dom: IntersectionObserver initialization (#35314)

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* Add internal slot definition

Signed-off-by: stevennovaryo <steven.novaryo@gmail.com>

* Add initialization for new IntersectionObserver

Signed-off-by: stevennovaryo <steven.novaryo@gmail.com>

* Move observer initialization

Signed-off-by: stevennovaryo <steven.novaryo@gmail.com>

* Update WPT tests

Signed-off-by: stevennovaryo <steven.novaryo@gmail.com>

* Make a copy of style IntersectionObserverRootMargin

Signed-off-by: stevennovaryo <steven.novaryo@gmail.com>

* Move initialization to account for rooted expression

Signed-off-by: stevennovaryo <steven.novaryo@gmail.com>

* Fix some fields typing

Signed-off-by: stevennovaryo <steven.novaryo@gmail.com>

* Impl rest of IntersectionObserver interface

Signed-off-by: stevennovaryo <steven.novaryo@gmail.com>

* Fix tidy issue

Signed-off-by: stevennovaryo <steven.novaryo@gmail.com>

* Apply types logic and tidy fix from suggestions

Signed-off-by: stevennovaryo <steven.novaryo@gmail.com>

* Add allow unrooted for add registration to element

Signed-off-by: stevennovaryo <steven.novaryo@gmail.com>

---------

Signed-off-by: stevennovaryo <steven.novaryo@gmail.com>
This commit is contained in:
Steven Novaryo 2025-02-13 15:47:29 +08:00 • committed by GitHub
parent 610a1c2303
commit becd097585
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11 changed files with 439 additions and 64 deletions
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45
components/script/dom/element.rs
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@ -64,6 +64,7 @@ use xml5ever::serialize::TraversalScope::{
use super::customelementregistry::is_valid_custom_element_name;
use super::htmltablecolelement::{HTMLTableColElement, HTMLTableColElementLayoutHelpers};
use super::intersectionobserver::{IntersectionObserver, IntersectionObserverRegistration};
use crate::dom::activation::Activatable;
use crate::dom::attr::{Attr, AttrHelpersForLayout};
use crate::dom::bindings::cell::{ref_filter_map, DomRefCell, Ref, RefMut};
@ -613,6 +614,50 @@ impl Element {
Some(node) => node.is::<Document>(),
}
}
/// Return all IntersectionObserverRegistration for this element.
/// Lazily initialize the raredata if it does not exist.
pub(crate) fn registered_intersection_observers_mut(
&self,
) -> RefMut<Vec<IntersectionObserverRegistration>> {
RefMut::map(self.ensure_rare_data(), |rare_data| {
&mut rare_data.registered_intersection_observers
})
}
pub(crate) fn registered_intersection_observers(
&self,
) -> Option<Ref<Vec<IntersectionObserverRegistration>>> {
let rare_data: Ref<_> = self.rare_data.borrow();
if rare_data.is_none() {
return None;
}
Some(Ref::map(rare_data, |rare_data| {
&rare_data
.as_ref()
.unwrap()
.registered_intersection_observers
}))
}
/// Add a new IntersectionObserverRegistration to the element.
#[cfg_attr(crown, allow(crown::unrooted_must_root))]
pub(crate) fn add_intersection_observer_registration(
&self,
registration: IntersectionObserverRegistration,
) {
self.ensure_rare_data()
.registered_intersection_observers
.push(registration);
}
/// Removes a certain IntersectionObserver.
pub(crate) fn remove_intersection_observer(&self, observer: &IntersectionObserver) {
self.ensure_rare_data()
.registered_intersection_observers
.retain(|reg_obs| *reg_obs.observer != *observer)
}
}
/// <https://dom.spec.whatwg.org/#valid-shadow-host-name>