LibWeb: Implement SVGAnimatedLengthList

Author: https://github.com/gmta
Commit: 527a293047
Pull-request: https://github.com/LadybirdBrowser/ladybird/pull/6878

Libraries/LibWeb/SVG/SVGAnimatedLengthList.cpp

@@ -0,0 +1,38 @@
+/*
+ * Copyright (c) 2025, Jelle Raaijmakers <jelle@ladybird.org>
+ *
+ * SPDX-License-Identifier: BSD-2-Clause
+ */
+
+#include <LibWeb/Bindings/Intrinsics.h>
+#include <LibWeb/Bindings/SVGAnimatedLengthListPrototype.h>
+#include <LibWeb/SVG/SVGAnimatedLengthList.h>
+
+namespace Web::SVG {
+
+GC_DEFINE_ALLOCATOR(SVGAnimatedLengthList);
+
+GC::Ref<SVGAnimatedLengthList> SVGAnimatedLengthList::create(JS::Realm& realm, GC::Ref<SVGLengthList> base_val)
+{
+    return realm.create<SVGAnimatedLengthList>(realm, base_val);
+}
+
+SVGAnimatedLengthList::SVGAnimatedLengthList(JS::Realm& realm, GC::Ref<SVGLengthList> base_val)
+    : PlatformObject(realm)
+    , m_base_val(base_val)
+{
+}
+
+void SVGAnimatedLengthList::initialize(JS::Realm& realm)
+{
+    WEB_SET_PROTOTYPE_FOR_INTERFACE(SVGAnimatedLengthList);
+    Base::initialize(realm);
+}
+
+void SVGAnimatedLengthList::visit_edges(Visitor& visitor)
+{
+    Base::visit_edges(visitor);
+    visitor.visit(m_base_val);
+}
+
+}

Libraries/LibWeb/SVG/SVGAnimatedLengthList.h

@@ -0,0 +1,38 @@
+/*
+ * Copyright (c) 2025, Jelle Raaijmakers <jelle@ladybird.org>
+ *
+ * SPDX-License-Identifier: BSD-2-Clause
+ */
+
+#pragma once
+
+#include <LibWeb/Bindings/PlatformObject.h>
+#include <LibWeb/SVG/SVGLengthList.h>
+
+namespace Web::SVG {
+
+// https://svgwg.org/svg2-draft/types.html#InterfaceSVGAnimatedLengthList
+class SVGAnimatedLengthList final : public Bindings::PlatformObject {
+    WEB_PLATFORM_OBJECT(SVGAnimatedLengthList, Bindings::PlatformObject);
+    GC_DECLARE_ALLOCATOR(SVGAnimatedLengthList);
+
+public:
+    [[nodiscard]] static GC::Ref<SVGAnimatedLengthList> create(JS::Realm&, GC::Ref<SVGLengthList>);
+    virtual ~SVGAnimatedLengthList() override = default;
+
+    // https://svgwg.org/svg2-draft/types.html#__svg__SVGAnimatedLengthList__baseVal
+    GC::Ref<SVGLengthList> base_val() const { return m_base_val; }
+
+    // https://svgwg.org/svg2-draft/types.html#__svg__SVGAnimatedLengthList__animVal
+    GC::Ref<SVGLengthList> anim_val() const { return m_base_val; }
+
+private:
+    SVGAnimatedLengthList(JS::Realm&, GC::Ref<SVGLengthList>);
+
+    virtual void initialize(JS::Realm&) override;
+    virtual void visit_edges(Visitor&) override;
+
+    GC::Ref<SVGLengthList> m_base_val;
+};
+
+}

Libraries/LibWeb/SVG/SVGAnimatedLengthList.idl

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+#import <SVG/SVGLengthList.idl>
+
+// https://svgwg.org/svg2-draft/types.html#InterfaceSVGAnimatedLengthList
+[Exposed=Window]
+interface SVGAnimatedLengthList {
+    [SameObject] readonly attribute SVGLengthList baseVal;
+    [SameObject] readonly attribute SVGLengthList animVal;
+};