LibWeb/CSS: Stub out CSSNumericValue

Most of the methods on this rely on its subclasses existing, so for now it's very basic.
Author: https://github.com/AtkinsSJ Commit: 6cb8e92bd4 Pull-request: https://github.com/LadybirdBrowser/ladybird/pull/5937
2025-10-19 15:43:20 +00:00 · 2025-08-19 13:55:42 +01:00 · 2025-08-19 13:55:42 +01:00 · 6cb8e92bd4 · 2025-08-22 08:49:55 +00:00
commit 6cb8e92bd4
parent 5bdc2981e3
9 changed files with 233 additions and 0 deletions
--- a/Libraries/LibWeb/CSS/CSSNumericValue.h
+++ b/Libraries/LibWeb/CSS/CSSNumericValue.h
@ -0,0 +1,59 @@
+/*
+ * Copyright (c) 2025, Sam Atkins <sam@ladybird.org>
+ *
+ * SPDX-License-Identifier: BSD-2-Clause
+ */
+
+#pragma once
+
+#include <AK/FlyString.h>
+#include <LibWeb/Bindings/CSSNumericValuePrototype.h>
+#include <LibWeb/CSS/CSSStyleValue.h>
+#include <LibWeb/CSS/NumericType.h>
+#include <LibWeb/WebIDL/Types.h>
+
+namespace Web::CSS {
+
+struct CSSNumericType {
+    WebIDL::Long length {};
+    WebIDL::Long angle {};
+    WebIDL::Long time {};
+    WebIDL::Long frequency {};
+    WebIDL::Long resolution {};
+    WebIDL::Long flex {};
+    WebIDL::Long percent {};
+    Optional<Bindings::CSSNumericBaseType> percent_hint {};
+};
+
+// https://drafts.css-houdini.org/css-typed-om-1/#cssnumericvalue
+class CSSNumericValue : public CSSStyleValue {
+    WEB_PLATFORM_OBJECT(CSSNumericValue, CSSStyleValue);
+    GC_DECLARE_ALLOCATOR(CSSNumericValue);
+
+public:
+    struct SerializationParams {
+        Optional<double> minimum {};
+        Optional<double> maximum {};
+        bool nested { false };
+        bool parenless { false };
+    };
+    virtual ~CSSNumericValue() override = default;
+
+    CSSNumericType type_for_bindings() const;
+    NumericType const& type() const { return m_type; }
+
+    virtual String to_string() const final override { return to_string({}); }
+    String to_string(SerializationParams const&) const;
+
+protected:
+    explicit CSSNumericValue(JS::Realm&, NumericType);
+
+    virtual void initialize(JS::Realm&) override;
+
+    NumericType m_type;
+};
+
+// https://drafts.css-houdini.org/css-typed-om-1/#typedefdef-cssnumberish
+using CSSNumberish = Variant<double, GC::Root<CSSNumericValue>>;
+
+}