LibWeb: Make style-rule iteration aware of CSSMediaRule

The logic is handled by `CSSGroupingRule` and `CSSConditionRule`, so
`CSSMediaRule` only has to report if its condition matches.

Right now, that condition is always false because we do not evaluate the
media query.

1 files changed, 15 insertions, 3 deletions

diff --git a/Userland/Libraries/LibWeb/CSS/CSSRuleList.cpp b/Userland/Libraries/LibWeb/CSS/CSSRuleList.cpp
index ebb810806f..92f02249d5 100644
--- a/Userland/Libraries/LibWeb/CSS/CSSRuleList.cpp
+++ b/Userland/Libraries/LibWeb/CSS/CSSRuleList.cpp
@@ -6,6 +6,7 @@
 
 #include <AK/TypeCasts.h>
 #include <LibWeb/CSS/CSSImportRule.h>
+#include <LibWeb/CSS/CSSMediaRule.h>
 #include <LibWeb/CSS/CSSRuleList.h>
 #include <LibWeb/DOM/ExceptionOr.h>
 
@@ -79,12 +80,21 @@ DOM::ExceptionOr<void> CSSRuleList::remove_a_css_rule(u32 index)
 void CSSRuleList::for_each_effective_style_rule(Function<void(CSSStyleRule const&)> const& callback) const
 {
     for (auto& rule : m_rules) {
-        if (rule.type() == CSSRule::Type::Style) {
+        switch (rule.type()) {
+        case CSSRule::Type::Style:
             callback(verify_cast<CSSStyleRule>(rule));
-        } else if (rule.type() == CSSRule::Type::Import) {
-            const auto& import_rule = verify_cast<CSSImportRule>(rule);
+            break;
+        case CSSRule::Type::Import: {
+            auto const& import_rule = verify_cast<CSSImportRule>(rule);
             if (import_rule.has_import_result())
                 import_rule.loaded_style_sheet()->for_each_effective_style_rule(callback);
+            break;
+        }
+        case CSSRule::Type::Media:
+            verify_cast<CSSMediaRule>(rule).for_each_effective_style_rule(callback);
+            break;
+        case CSSRule::Type::__Count:
+            VERIFY_NOT_REACHED();
         }
     }
 }
@@ -102,6 +112,8 @@ bool CSSRuleList::for_first_not_loaded_import_rule(Function<void(CSSImportRule&)
             if (import_rule.loaded_style_sheet()->for_first_not_loaded_import_rule(callback)) {
                 return true;
             }
+        } else if (rule.type() == CSSRule::Type::Media) {
+            return verify_cast<CSSMediaRule>(rule).for_first_not_loaded_import_rule(callback);
         }
     }