mirror of
https://github.com/LadybirdBrowser/ladybird
synced 2026-05-03 13:02:09 +02:00
1ba3ec6ae7
Element.cpp still handled the style invalidation fallout from part and exportparts attribute changes directly. Move that ::part-related policy into CSS::Invalidation::PartInvalidator. Element continues to update the DOM token state for part attributes. The helper now owns the style dirtiness for elements targeted through ::part and for shadow-tree descendants exposed through exportparts.
35 lines
1.1 KiB
C++
35 lines
1.1 KiB
C++
/*
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* Copyright (c) 2026-present, the Ladybird developers
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*
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* SPDX-License-Identifier: BSD-2-Clause
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*/
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#include <LibWeb/CSS/Invalidation/PartInvalidator.h>
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#include <LibWeb/DOM/Element.h>
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#include <LibWeb/DOM/ShadowRoot.h>
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#include <LibWeb/TraversalDecision.h>
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namespace Web::CSS::Invalidation {
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void invalidate_style_after_part_attribute_change(DOM::Element& element)
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{
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// ::part(...) rules in the outer scope target this element by part name, so the element's computed style must
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// be recomputed when its part tokens change.
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element.set_needs_style_update(true);
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}
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void invalidate_style_after_exportparts_attribute_change(DOM::Element& element)
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{
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// When exportparts changes on a shadow host, elements with part tokens inside its shadow tree may newly become
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// or stop being targets of ::part() rules in the outer scope.
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if (auto shadow_root = element.shadow_root()) {
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shadow_root->for_each_in_subtree_of_type<DOM::Element>([](DOM::Element& element) {
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if (!element.part_names().is_empty())
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element.set_needs_style_update(true);
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return TraversalDecision::Continue;
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});
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}
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}
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}
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