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style: Make :host::part work in the same shadow tree as the part.

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Differential Revision: https://phabricator.services.mozilla.com/D68249
This commit is contained in:
Emilio Cobos Álvarez 2020-04-06 10:25:08 +00:00
parent 257b96c549
commit 846996ae7e
2 changed files with 112 additions and 74 deletions
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27
components/selectors/matching.rs
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@ -676,19 +676,22 @@ where
None => return false,
};
loop {
let outer_host = host.containing_shadow_host();
if outer_host.as_ref().map(|h| h.opaque()) == context.shared.current_host {
break;
let current_host = context.shared.current_host;
if current_host != Some(host.opaque()) {
loop {
let outer_host = host.containing_shadow_host();
if outer_host.as_ref().map(|h| h.opaque()) == current_host {
break;
}
let outer_host = match outer_host {
Some(h) => h,
None => return false,
};
// TODO(emilio): if worth it, we could early return if
// host doesn't have the exportparts attribute.
hosts.push(host);
host = outer_host;
}
let outer_host = match outer_host {
Some(h) => h,
None => return false,
};
// TODO(emilio): if worth it, we could early return if
// host doesn't have the exportparts attribute.
hosts.push(host);
host = outer_host;
}
// Translate the part into the right scope.