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223ca14abc
The :host::part() pattern allows a shadow DOM's own stylesheet to style its internal elements that have been exposed via the part attribute. Previously, ::part() rules were only collected from ancestor shadow roots (for external part styling), but never from the element's own containing shadow root. Fix this by also collecting ::part() rules from the element's own shadow root in collect_matching_rules(). Additionally, fix the selector engine's ::part() compound matching to preserve the shadow_host when the rule originates from the part element's own shadow root, allowing :host to match correctly in the same compound selector. This fixes 2 previously failing WPT tests: - css/css-shadow-parts/host-part-002.html - css/css-shadow-parts/host-part-nesting.html
59 lines
1.8 KiB
C++
59 lines
1.8 KiB
C++
/*
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* Copyright (c) 2018-2024, Andreas Kling <andreas@ladybird.org>
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*
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* SPDX-License-Identifier: BSD-2-Clause
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*/
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#pragma once
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#include <AK/HashMap.h>
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#include <LibWeb/CSS/Selector.h>
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#include <LibWeb/DOM/Element.h>
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namespace Web::SelectorEngine {
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enum class SelectorKind {
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Normal,
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Relative,
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};
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enum class HasMatchResult : u8 {
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Matched,
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NotMatched,
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};
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struct HasResultCacheKey {
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CSS::Selector const* selector;
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GC::Ptr<DOM::Element const> element;
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void visit_edges(GC::Cell::Visitor& visitor)
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{
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visitor.visit(element);
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}
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bool operator==(HasResultCacheKey const&) const = default;
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};
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struct HasResultCacheKeyTraits : Traits<HasResultCacheKey> {
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static unsigned hash(HasResultCacheKey const& key)
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{
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return pair_int_hash(ptr_hash(key.selector), ptr_hash(key.element.ptr()));
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}
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};
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using HasResultCache = HashMap<HasResultCacheKey, HasMatchResult, HasResultCacheKeyTraits>;
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struct MatchContext {
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GC::Ptr<CSS::CSSStyleSheet const> style_sheet_for_rule {};
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GC::Ptr<DOM::Element const> subject {};
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GC::Ptr<DOM::Element const> slotted_element {}; // Only set when matching a ::slotted() pseudo-element
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GC::Ptr<DOM::Element const> part_owning_parent {}; // Only set temporarily when matching a ::part() pseudo-element
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GC::Ptr<DOM::ShadowRoot const> rule_shadow_root {}; // Shadow root the matched rule belongs to
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bool collect_per_element_selector_involvement_metadata { false };
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CSS::PseudoClassBitmap attempted_pseudo_class_matches {};
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HasResultCache* has_result_cache { nullptr };
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};
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bool matches(CSS::Selector const&, DOM::Element const&, GC::Ptr<DOM::Element const> shadow_host, MatchContext& context, Optional<CSS::PseudoElement> = {}, GC::Ptr<DOM::ParentNode const> scope = {}, SelectorKind selector_kind = SelectorKind::Normal, GC::Ptr<DOM::Element const> anchor = nullptr);
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}
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