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ladybird/Libraries/LibWeb/CSS/SelectorEngine.h

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Meta: Add license header to source files As suggested by Joshua, this commit adds the 2-clause BSD license as a comment block to the top of every source file. For the first pass, I've just added myself for simplicity. I encourage everyone to add themselves as copyright holders of any file they've added or modified in some significant way. If I've added myself in error somewhere, feel free to replace it with the appropriate copyright holder instead. Going forward, all new source files should include a license header.
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/*
Meta: Update my e-mail address everywhere
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* Copyright (c) 2018-2024, Andreas Kling <andreas@ladybird.org>
Meta: Add license header to source files As suggested by Joshua, this commit adds the 2-clause BSD license as a comment block to the top of every source file. For the first pass, I've just added myself for simplicity. I encourage everyone to add themselves as copyright holders of any file they've added or modified in some significant way. If I've added myself in error somewhere, feel free to replace it with the appropriate copyright holder instead. Going forward, all new source files should include a license header.
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*
Everything: Move to SPDX license identifiers in all files. SPDX License Identifiers are a more compact / standardized way of representing file license information. See: https://spdx.dev/resources/use/#identifiers This was done with the `ambr` search and replace tool. ambr --no-parent-ignore --key-from-file --rep-from-file key.txt rep.txt *
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* SPDX-License-Identifier: BSD-2-Clause
Meta: Add license header to source files As suggested by Joshua, this commit adds the 2-clause BSD license as a comment block to the top of every source file. For the first pass, I've just added myself for simplicity. I encourage everyone to add themselves as copyright holders of any file they've added or modified in some significant way. If I've added myself in error somewhere, feel free to replace it with the appropriate copyright holder instead. Going forward, all new source files should include a license header.
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*/
LibHTML: Move selector matching into a SelectorEngine namespace
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#pragma once
LibWeb: Rename directory LibHTML => LibWeb Let's rename this to LibWeb since it aims to provide more parts of the web platform than just HTML. :^)
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#include <LibWeb/CSS/Selector.h>
LibWeb: Move DOM classes into the Web::DOM namespace LibWeb keeps growing and the Web namespace is filling up fast. Let's put DOM stuff into Web::DOM, just like we already started doing with SVG stuff in Web::SVG.
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#include <LibWeb/DOM/Element.h>
LibHTML: Move selector matching into a SelectorEngine namespace
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LibWeb: Move DOM classes into the Web::DOM namespace LibWeb keeps growing and the Web namespace is filling up fast. Let's put DOM stuff into Web::DOM, just like we already started doing with SVG stuff in Web::SVG.
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namespace Web::SelectorEngine {
LibWeb: Move everything into the Web namespace
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LibWeb: Implement the `:has()` pseudo-class See https://drafts.csswg.org/selectors-4/#relational.
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enum class SelectorKind {
Normal,
Relative,
};
LibGC+Everywhere: Factor out a LibGC from LibJS Resulting in a massive rename across almost everywhere! Alongside the namespace change, we now have the following names: * JS::NonnullGCPtr -> GC::Ref * JS::GCPtr -> GC::Ptr * JS::HeapFunction -> GC::Function * JS::CellImpl -> GC::Cell * JS::Handle -> GC::Root
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bool matches(CSS::Selector const&, Optional<CSS::CSSStyleSheet const&> style_sheet_for_rule, DOM::Element const&, GC::Ptr<DOM::Element const> shadow_host, Optional<CSS::Selector::PseudoElement::Type> = {}, GC::Ptr<DOM::ParentNode const> scope = {}, SelectorKind selector_kind = SelectorKind::Normal, GC::Ptr<DOM::Element const> anchor = nullptr);
LibWeb: Move everything into the Web namespace
2020-03-07 10:27:02 +01:00
LibGC+Everywhere: Factor out a LibGC from LibJS Resulting in a massive rename across almost everywhere! Alongside the namespace change, we now have the following names: * JS::NonnullGCPtr -> GC::Ref * JS::GCPtr -> GC::Ptr * JS::HeapFunction -> GC::Function * JS::CellImpl -> GC::Cell * JS::Handle -> GC::Root
2024-11-15 04:01:23 +13:00
[[nodiscard]] bool fast_matches(CSS::Selector const&, Optional<CSS::CSSStyleSheet const&> style_sheet_for_rule, DOM::Element const&, GC::Ptr<DOM::Element const> shadow_host);
LibWeb: Add a fast (iterative) selector matcher for trivial selectors If we determine that a selector is simple enough, we now run it using a special matching loop that traverses up the DOM ancestor chain without recursion. The criteria for this fast path are: - All combinators involved must be either descendant or child. - Only tag name, class, ID and attribute selectors allowed. It's definitely possible to increase the coverage of this fast path, but this first version already provides a substantial reduction in time spent evaluating selectors. 48% of the selectors evaluated when loading our GitHub repo are now using this fast path. 18% speed-up on the "Descendant and child combinators" subtest of StyleBench. :^)
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[[nodiscard]] bool can_use_fast_matches(CSS::Selector const&);
LibWeb: Filter :hover selectors early for elements that aren't hovered Some websites (like vercel.com...) have a *lot* of :hover selectors that we can simply skip for any element that isn't currently hovered.
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[[nodiscard]] bool matches_hover_pseudo_class(DOM::Element const&);
LibWeb: Move everything into the Web namespace
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}
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