Mirrors/servo
1
0
Fork 0
mirror of https://github.com/servo/servo.git synced 2025-09-30 16:49:16 +01:00
Code Issues Projects Releases Packages Wiki Activity

script: Use HTMLElement.scrollParent to implement Element.scrollIntoView (#39144)

Browse source 
To find scrolling ancestors, we need to walk up the flat tree and only
consider the elements that are in the chain of containing block
ancestors of an element. `scrollParent` now does this so we can use it
to properly implement `scrollIntoView`.

Testing: There are WPT tests for this change.

---------

Signed-off-by: Martin Robinson <mrobinson@igalia.com>
Co-authored-by: Oriol Brufau <obrufau@igalia.com>
This commit is contained in:
Martin Robinson 2025-09-07 14:44:11 -07:00 • committed by GitHub
parent 286bbe6cb1
commit 9f4f598f44
No known key found for this signature in database
GPG key ID: B5690EEEBB952194
9 changed files with 141 additions and 71 deletions
Download patch file Download diff file Expand all files Collapse all files

18
components/script/dom/html/htmlelement.rs
View file

@ -9,7 +9,8 @@ use std::rc::Rc;
use dom_struct::dom_struct;
use html5ever::{LocalName, Prefix, local_name, ns};
use js::rust::HandleObject;
use layout_api::QueryMsg;
use layout_api::{QueryMsg, ScrollContainerQueryType, ScrollContainerResponse};
use script_bindings::codegen::GenericBindings::DocumentBinding::DocumentMethods;
use style::attr::AttrValue;
use stylo_dom::ElementState;
@ -48,7 +49,9 @@ use crate::dom::html::htmlhtmlelement::HTMLHtmlElement;
use crate::dom::html::htmlinputelement::{HTMLInputElement, InputType};
use crate::dom::html::htmllabelelement::HTMLLabelElement;
use crate::dom::html::htmltextareaelement::HTMLTextAreaElement;
use crate::dom::node::{BindContext, Node, NodeTraits, ShadowIncluding, UnbindContext};
use crate::dom::node::{
BindContext, Node, NodeTraits, ShadowIncluding, UnbindContext, from_untrusted_node_address,
};
use crate::dom::shadowroot::ShadowRoot;
use crate::dom::text::Text;
use crate::dom::virtualmethods::VirtualMethods;
@ -445,8 +448,17 @@ impl HTMLElementMethods<crate::DomTypeHolder> for HTMLElement {
}
/// <https://drafts.csswg.org/cssom-view/#dom-htmlelement-scrollparent>
#[allow(unsafe_code)]
fn GetScrollParent(&self) -> Option<DomRoot<Element>> {
self.owner_window().scroll_parent_query(self.upcast())
self.owner_window()
.scroll_container_query(self.upcast(), ScrollContainerQueryType::ForScrollParent)
.and_then(|response| match response {
ScrollContainerResponse::Viewport => self.owner_document().GetScrollingElement(),
ScrollContainerResponse::Element(parent_node_address) => {
let node = unsafe { from_untrusted_node_address(parent_node_address) };
DomRoot::downcast(node)
},
})
}
/// <https://drafts.csswg.org/cssom-view/#dom-htmlelement-offsetparent>