Everywhere: Hoist the Libraries folder to the top-level

Author: https://github.com/trflynn89
Commit: 93712b24bf
Pull-request: https://github.com/LadybirdBrowser/ladybird/pull/2256
Reviewed-by: https://github.com/sideshowbarker

Libraries/LibWeb/HTML/HTMLOptionsCollection.h

@@ -0,0 +1,44 @@
+/*
+ * Copyright (c) 2022, the SerenityOS developers.
+ *
+ * SPDX-License-Identifier: BSD-2-Clause
+ */
+
+#pragma once
+
+#include <AK/Variant.h>
+#include <LibWeb/DOM/HTMLCollection.h>
+#include <LibWeb/WebIDL/ExceptionOr.h>
+#include <LibWeb/WebIDL/Types.h>
+
+namespace Web::HTML {
+
+using HTMLOptionOrOptGroupElement = Variant<JS::Handle<HTMLOptionElement>, JS::Handle<HTMLOptGroupElement>>;
+using HTMLElementOrElementIndex = Variant<JS::Handle<HTMLElement>, i32>;
+
+class HTMLOptionsCollection final : public DOM::HTMLCollection {
+    WEB_PLATFORM_OBJECT(HTMLOptionsCollection, DOM::HTMLCollection);
+    JS_DECLARE_ALLOCATOR(HTMLOptionsCollection);
+
+public:
+    [[nodiscard]] static JS::NonnullGCPtr<HTMLOptionsCollection> create(DOM::ParentNode& root, ESCAPING Function<bool(DOM::Element const&)> filter);
+    virtual ~HTMLOptionsCollection() override;
+
+    WebIDL::ExceptionOr<void> set_value_of_indexed_property(u32, JS::Value) override;
+
+    WebIDL::ExceptionOr<void> set_length(WebIDL::UnsignedLong);
+
+    WebIDL::ExceptionOr<void> add(HTMLOptionOrOptGroupElement element, Optional<HTMLElementOrElementIndex> before = {});
+
+    void remove(WebIDL::Long);
+
+    WebIDL::Long selected_index() const;
+    void set_selected_index(WebIDL::Long);
+
+private:
+    HTMLOptionsCollection(DOM::ParentNode& root, ESCAPING Function<bool(DOM::Element const&)> filter);
+
+    virtual void initialize(JS::Realm&) override;
+};
+
+}