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LibWeb/CSS: Use CSSRule's context to parse new child rules

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Keep track of which CSSRule owns a CSSRuleList, and then use that to
produce a stack of RuleContexts for the CSS Parser to use.

There are certainly other places we should do this!
This commit is contained in:
Sam Atkins 2025-04-14 17:27:00 +01:00
commit 658569b533
Notes: github-actions[bot] 2025-04-23 10:39:55 +00:00
7 changed files with 32 additions and 15 deletions
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5
Libraries/LibWeb/CSS/CSSRuleList.h
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@ -11,6 +11,7 @@
#include <AK/Function.h>
#include <LibWeb/Bindings/PlatformObject.h>
#include <LibWeb/CSS/CSSRule.h>
#include <LibWeb/CSS/Parser/RuleContext.h>
#include <LibWeb/Forward.h>
#include <LibWeb/TraversalOrder.h>
#include <LibWeb/WebIDL/ExceptionOr.h>
@ -62,6 +63,7 @@ public:
// Returns whether the match state of any media queries changed after evaluation.
bool evaluate_media_queries(HTML::Window const&);
void set_owner_rule(GC::Ref<CSSRule> owner_rule) { m_owner_rule = owner_rule; }
void set_rules(Badge<CSSStyleSheet>, Vector<GC::Ref<CSSRule>> rules) { m_rules = move(rules); }
Function<void()> on_change;
@ -72,7 +74,10 @@ private:
virtual void initialize(JS::Realm&) override;
virtual void visit_edges(Cell::Visitor&) override;
Vector<Parser::RuleContext> rule_context() const;
Vector<GC::Ref<CSSRule>> m_rules;
GC::Ptr<CSSRule> m_owner_rule;
};
}