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LibWeb: Match the :not pseudoclass

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When a Selector features a :not() pseudoclass we now check whether the
current element matches with the given selector in the :not and act
accordingly.
This commit is contained in:
Tobias Christiansen 2021-05-23 21:00:44 +02:00 committed by Linus Groh
parent 1ab82afee6
commit 820224bb48
Notes: sideshowbarker 2024-07-18 17:25:46 +09:00 
Author: https://github.com/TobyAsE
Commit: https://github.com/SerenityOS/serenity/commit/820224bb487
Pull-request: https://github.com/SerenityOS/serenity/pull/7422
1 changed files with 12 additions and 0 deletions
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12
Userland/Libraries/LibWeb/CSS/SelectorEngine.cpp
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@ -4,6 +4,7 @@
* SPDX-License-Identifier: BSD-2-Clause
*/
#include <LibWeb/CSS/Parser/DeprecatedCSSParser.h>
#include <LibWeb/CSS/SelectorEngine.h>
#include <LibWeb/DOM/Document.h>
#include <LibWeb/DOM/Element.h>
@ -100,6 +101,17 @@ static bool matches(const CSS::Selector::SimpleSelector& component, const DOM::E
if (!element.has_attribute("checked"))
return false;
break;
case CSS::Selector::SimpleSelector::PseudoClass::Not: {
if (component.not_selector.is_empty())
return false;
auto not_selector = Web::parse_selector(CSS::ParsingContext(element), component.not_selector);
if (!not_selector.has_value())
return false;
auto not_matches = matches(not_selector.value(), element);
if (not_matches)
return false;
break;
}
case CSS::Selector::SimpleSelector::PseudoClass::NthChild:
case CSS::Selector::SimpleSelector::PseudoClass::NthLastChild:
const auto step_size = component.nth_child_pattern.step_size;