7 files changed, 138 insertions, 3 deletions
diff --git a/Userland/Libraries/LibWeb/CSS/CSSFontFaceRule.cpp b/Userland/Libraries/LibWeb/CSS/CSSFontFaceRule.cpp
new file mode 100644
index 0000000000..f001068142
--- /dev/null
+++ b/Userland/Libraries/LibWeb/CSS/CSSFontFaceRule.cpp
@@ -0,0 +1,29 @@
+/*
+ * Copyright (c) 2022, Sam Atkins <atkinssj@serenityos.org>
+ *
+ * SPDX-License-Identifier: BSD-2-Clause
+ */
+
+#include <LibWeb/CSS/CSSFontFaceRule.h>
+
+namespace Web::CSS {
+
+CSSFontFaceRule::CSSFontFaceRule(FontFace&& font_face)
+    : m_font_face(move(font_face))
+{
+}
+
+CSSStyleDeclaration* CSSFontFaceRule::style()
+{
+    // FIXME: Return a CSSStyleDeclaration subclass that directs changes to the FontFace.
+    return nullptr;
+}
+
+// https://www.w3.org/TR/cssom/#ref-for-cssfontfacerule
+String CSSFontFaceRule::serialized() const
+{
+    // FIXME: Implement this!
+    return "@font-face { /* FIXME: Implement CSSFontFaceRule::serialized()! */ }";
+}
+
+}
diff --git a/Userland/Libraries/LibWeb/CSS/CSSFontFaceRule.h b/Userland/Libraries/LibWeb/CSS/CSSFontFaceRule.h
new file mode 100644
index 0000000000..7eb1b487e8
--- /dev/null
+++ b/Userland/Libraries/LibWeb/CSS/CSSFontFaceRule.h
@@ -0,0 +1,45 @@
+/*
+ * Copyright (c) 2022, Sam Atkins <atkinssj@serenityos.org>
+ *
+ * SPDX-License-Identifier: BSD-2-Clause
+ */
+
+#pragma once
+
+#include <LibWeb/CSS/CSSRule.h>
+#include <LibWeb/CSS/FontFace.h>
+
+namespace Web::CSS {
+
+class CSSFontFaceRule final : public CSSRule {
+    AK_MAKE_NONCOPYABLE(CSSFontFaceRule);
+    AK_MAKE_NONMOVABLE(CSSFontFaceRule);
+
+public:
+    using WrapperType = Bindings::CSSFontFaceRuleWrapper;
+
+    static NonnullRefPtr<CSSFontFaceRule> create(FontFace&& font_face)
+    {
+        return adopt_ref(*new CSSFontFaceRule(move(font_face)));
+    }
+
+    virtual ~CSSFontFaceRule() override = default;
+
+    virtual StringView class_name() const override { return "CSSFontFaceRule"; }
+    virtual Type type() const override { return Type::FontFace; }
+
+    FontFace const& font_face() const { return m_font_face; }
+    CSSStyleDeclaration* style();
+
+private:
+    explicit CSSFontFaceRule(FontFace&&);
+
+    virtual String serialized() const override;
+
+    FontFace m_font_face;
+};
+
+template<>
+inline bool CSSRule::fast_is<CSSFontFaceRule>() const { return type() == CSSRule::Type::FontFace; }
+
+}
diff --git a/Userland/Libraries/LibWeb/CSS/CSSFontFaceRule.idl b/Userland/Libraries/LibWeb/CSS/CSSFontFaceRule.idl
new file mode 100644
index 0000000000..cf5701a19b
--- /dev/null
+++ b/Userland/Libraries/LibWeb/CSS/CSSFontFaceRule.idl
@@ -0,0 +1,7 @@
+#import <CSS/CSSRule.idl>
+#import <CSS/CSSStyleDeclaration.idl>
+
+[Exposed=Window]
+interface CSSFontFaceRule : CSSRule {
+    readonly attribute CSSStyleDeclaration style;
+};
diff --git a/Userland/Libraries/LibWeb/CSS/CSSRule.h b/Userland/Libraries/LibWeb/CSS/CSSRule.h
index 125f38d63d..ec7f9f29d9 100644
--- a/Userland/Libraries/LibWeb/CSS/CSSRule.h
+++ b/Userland/Libraries/LibWeb/CSS/CSSRule.h
@@ -29,6 +29,7 @@ public:
         Import,
         Media,
         Supports,
+        FontFace,
         __Count,
     };
 
diff --git a/Userland/Libraries/LibWeb/CSS/CSSRuleList.cpp b/Userland/Libraries/LibWeb/CSS/CSSRuleList.cpp
index 0ee0b1fd43..650dac3765 100644
--- a/Userland/Libraries/LibWeb/CSS/CSSRuleList.cpp
+++ b/Userland/Libraries/LibWeb/CSS/CSSRuleList.cpp
@@ -78,8 +78,7 @@ void CSSRuleList::for_each_effective_style_rule(Function<void(CSSStyleRule const
 {
     for (auto const& rule : m_rules) {
         switch (rule.type()) {
-        case CSSRule::Type::Style:
-            callback(static_cast<CSSStyleRule const&>(rule));
+        case CSSRule::Type::FontFace:
             break;
         case CSSRule::Type::Import: {
             auto const& import_rule = static_cast<CSSImportRule const&>(rule);
@@ -90,6 +89,9 @@ void CSSRuleList::for_each_effective_style_rule(Function<void(CSSStyleRule const
         case CSSRule::Type::Media:
             static_cast<CSSMediaRule const&>(rule).for_each_effective_style_rule(callback);
             break;
+        case CSSRule::Type::Style:
+            callback(static_cast<CSSStyleRule const&>(rule));
+            break;
         case CSSRule::Type::Supports:
             static_cast<CSSSupportsRule const&>(rule).for_each_effective_style_rule(callback);
             break;
@@ -105,7 +107,7 @@ bool CSSRuleList::evaluate_media_queries(HTML::Window const& window)
 
     for (auto& rule : m_rules) {
         switch (rule.type()) {
-        case CSSRule::Type::Style:
+        case CSSRule::Type::FontFace:
             break;
         case CSSRule::Type::Import: {
             auto& import_rule = verify_cast<CSSImportRule>(rule);
@@ -123,6 +125,8 @@ bool CSSRuleList::evaluate_media_queries(HTML::Window const& window)
                 any_media_queries_changed_match_state = true;
             break;
         }
+        case CSSRule::Type::Style:
+            break;
         case CSSRule::Type::Supports: {
             auto& supports_rule = verify_cast<CSSSupportsRule>(rule);
             if (supports_rule.condition_matches() && supports_rule.css_rules().evaluate_media_queries(window))
diff --git a/Userland/Libraries/LibWeb/CSS/FontFace.cpp b/Userland/Libraries/LibWeb/CSS/FontFace.cpp
new file mode 100644
index 0000000000..b0401996cd
--- /dev/null
+++ b/Userland/Libraries/LibWeb/CSS/FontFace.cpp
@@ -0,0 +1,17 @@
+/*
+ * Copyright (c) 2022, Sam Atkins <atkinssj@serenityos.org>
+ *
+ * SPDX-License-Identifier: BSD-2-Clause
+ */
+
+#include <LibWeb/CSS/FontFace.h>
+
+namespace Web::CSS {
+
+FontFace::FontFace(FlyString font_family, Vector<Source> sources)
+    : m_font_family(move(font_family))
+    , m_sources(move(sources))
+{
+}
+
+}
diff --git a/Userland/Libraries/LibWeb/CSS/FontFace.h b/Userland/Libraries/LibWeb/CSS/FontFace.h
new file mode 100644
index 0000000000..e90aa75b19
--- /dev/null
+++ b/Userland/Libraries/LibWeb/CSS/FontFace.h
@@ -0,0 +1,32 @@
+/*
+ * Copyright (c) 2022, Sam Atkins <atkinssj@serenityos.org>
+ *
+ * SPDX-License-Identifier: BSD-2-Clause
+ */
+
+#pragma once
+
+#include <AK/FlyString.h>
+#include <AK/URL.h>
+
+namespace Web::CSS {
+
+class FontFace {
+public:
+    struct Source {
+        AK::URL url;
+    };
+
+    FontFace(FlyString font_family, Vector<Source> sources);
+    ~FontFace() = default;
+
+    FlyString font_family() const { return m_font_family; }
+    Vector<Source> const& sources() const { return m_sources; }
+    // FIXME: font-style, font-weight, font-stretch, unicode-range, font-feature-settings
+
+private:
+    FlyString m_font_family;
+    Vector<Source> m_sources;
+};
+
+}