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script: Mark the entire shadow tree for restyle when its stylesheet is invalidated (#38529)

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This change fix this bugs: modify stylesheet of shadow tree does not
take effect if there is no other Dom change within the shadow tree
happens.

Fixes: This change fix some bugs reported by this issue #38211. 
Testing: This fixes some subtests in
`/css/cssom/CSSStyleSheet-constructable.html` and
`/css/cssom/CSSStyleSheet-constructable-disallow-import.tentative.html`,
and make some subtest failed in
`/css/cssom/CSSStyleSheet-constructable-baseURL.html`, because the
`BaseUrl` is not yet supported for `CSSStylesheet`.

Signed-off-by: sharpshooter_pt <ibluegalaxy_taoj@163.com>
This commit is contained in:
JoeDow 2025-08-18 20:48:35 +08:00 • committed by GitHub
parent 5c885d61ad
commit ce16fbce75
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4 changed files with 12 additions and 9 deletions
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6
components/script/dom/shadowroot.rs
View file

@ -14,6 +14,7 @@ use script_bindings::script_runtime::JSContext;
use servo_arc::Arc;
use style::author_styles::AuthorStyles;
use style::dom::TElement;
use style::invalidation::element::restyle_hints::RestyleHint;
use style::shared_lock::SharedRwLockReadGuard;
use style::stylesheets::Stylesheet;
use style::stylist::{CascadeData, Stylist};
@ -270,6 +271,11 @@ impl ShadowRoot {
// Mark the host element dirty so a reflow will be performed.
if let Some(host) = self.host.get() {
host.upcast::<Node>().dirty(NodeDamage::Style);
// Also mark the host element with `RestyleHint::restyle_subtree` so a reflow
// can traverse into the shadow tree.
let mut restyle = self.document.ensure_pending_restyle(&host);
restyle.hint.insert(RestyleHint::restyle_subtree());
}
}