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

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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
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9 changed files with 141 additions and 71 deletions
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16
components/layout/layout_impl.rs
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@ -29,8 +29,8 @@ use layout_api::wrapper_traits::LayoutNode;
use layout_api::{
BoxAreaType, IFrameSizes, Layout, LayoutConfig, LayoutDamage, LayoutFactory,
OffsetParentResponse, PropertyRegistration, QueryMsg, ReflowGoal, ReflowPhasesRun,
ReflowRequest, ReflowRequestRestyle, ReflowResult, RegisterPropertyError, ScrollParentResponse,
TrustedNodeAddress,
ReflowRequest, ReflowRequestRestyle, ReflowResult, RegisterPropertyError,
ScrollContainerQueryType, ScrollContainerResponse, TrustedNodeAddress,
};
use log::{debug, error, warn};
use malloc_size_of::{MallocConditionalSizeOf, MallocSizeOf, MallocSizeOfOps};
@ -92,8 +92,8 @@ use crate::display_list::{DisplayListBuilder, HitTest, StackingContextTree};
use crate::query::{
get_the_text_steps, process_box_area_request, process_box_areas_request,
process_client_rect_request, process_node_scroll_area_request, process_offset_parent_query,
process_resolved_font_style_query, process_resolved_style_request, process_scroll_parent_query,
process_text_index_request,
process_resolved_font_style_query, process_resolved_style_request,
process_scroll_container_query, process_text_index_request,
};
use crate::traversal::{RecalcStyle, compute_damage_and_repair_style};
use crate::{BoxTree, FragmentTree};
@ -326,9 +326,13 @@ impl Layout for LayoutThread {
}
#[servo_tracing::instrument(skip_all)]
fn query_scroll_parent(&self, node: TrustedNodeAddress) -> Option<ScrollParentResponse> {
fn query_scroll_container(
&self,
node: TrustedNodeAddress,
query_type: ScrollContainerQueryType,
) -> Option<ScrollContainerResponse> {
let node = unsafe { ServoLayoutNode::new(&node) };
process_scroll_parent_query(node)
process_scroll_container_query(node, query_type)
}
#[servo_tracing::instrument(skip_all)]