LibWeb: Implement StaticRange

Userland/Libraries/LibWeb/DOM/StaticRange.h

@@ -0,0 +1,34 @@
+/*
+ * Copyright (c) 2022, Luke Wilde <lukew@serenityos.org>
+ *
+ * SPDX-License-Identifier: BSD-2-Clause
+ */
+
+#pragma once
+
+#include <LibWeb/DOM/AbstractRange.h>
+
+namespace Web::DOM {
+
+// NOTE: We must use RP instead of NNRP here, otherwise the generated code cannot default initialize this struct.
+//       They will never be null, as they are marked as required and non-null in the dictionary.
+struct StaticRangeInit {
+    RefPtr<Node> start_container;
+    u32 start_offset { 0 };
+    RefPtr<Node> end_container;
+    u32 end_offset { 0 };
+};
+
+class StaticRange final : public AbstractRange {
+public:
+    using WrapperType = Bindings::StaticRangeWrapper;
+
+    virtual ~StaticRange() override;
+
+    static ExceptionOr<NonnullRefPtr<StaticRange>> create_with_global_object(JS::GlobalObject&, StaticRangeInit& init);
+
+private:
+    StaticRange(Node& start_container, u32 start_offset, Node& end_container, u32 end_offset);
+};
+
+}