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LibWeb: Implement @supports rule :^)

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The main thing missing is that we don't serialize the supports clause,
but for actually using a `@supports (something: cool) {}` rule in CSS,
it works!
This commit is contained in:
Sam Atkins 2021-10-08 17:48:14 +01:00 • committed by Andreas Kling
parent 439d978ea5
commit 57a25139a5
9 changed files with 129 additions and 0 deletions
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6
Userland/Libraries/LibWeb/CSS/CSSRuleList.cpp
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@ -8,6 +8,7 @@
#include <LibWeb/CSS/CSSImportRule.h>
#include <LibWeb/CSS/CSSMediaRule.h>
#include <LibWeb/CSS/CSSRuleList.h>
#include <LibWeb/CSS/CSSSupportsRule.h>
#include <LibWeb/DOM/ExceptionOr.h>
namespace Web::CSS {
@ -93,6 +94,9 @@ void CSSRuleList::for_each_effective_style_rule(Function<void(CSSStyleRule const
case CSSRule::Type::Media:
verify_cast<CSSMediaRule>(rule).for_each_effective_style_rule(callback);
break;
case CSSRule::Type::Supports:
verify_cast<CSSSupportsRule>(rule).for_each_effective_style_rule(callback);
break;
case CSSRule::Type::__Count:
VERIFY_NOT_REACHED();
}
@ -114,6 +118,8 @@ bool CSSRuleList::for_first_not_loaded_import_rule(Function<void(CSSImportRule&)
}
} else if (rule.type() == CSSRule::Type::Media) {
return verify_cast<CSSMediaRule>(rule).for_first_not_loaded_import_rule(callback);
} else if (rule.type() == CSSRule::Type::Supports) {
return verify_cast<CSSSupportsRule>(rule).for_first_not_loaded_import_rule(callback);
}
}