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/DOMStringMap.h

@@ -0,0 +1,53 @@
+/*
+ * Copyright (c) 2021-2023, Luke Wilde <lukew@serenityos.org>
+ * Copyright (c) 2022, Andreas Kling <andreas@ladybird.org>
+ *
+ * SPDX-License-Identifier: BSD-2-Clause
+ */
+
+#pragma once
+
+#include <LibWeb/Bindings/PlatformObject.h>
+#include <LibWeb/Forward.h>
+
+namespace Web::HTML {
+
+// https://html.spec.whatwg.org/multipage/dom.html#domstringmap
+class DOMStringMap final : public Bindings::PlatformObject {
+    WEB_PLATFORM_OBJECT(DOMStringMap, Bindings::PlatformObject);
+    JS_DECLARE_ALLOCATOR(DOMStringMap);
+
+public:
+    [[nodiscard]] static JS::NonnullGCPtr<DOMStringMap> create(DOM::Element&);
+
+    virtual ~DOMStringMap() override;
+
+    String determine_value_of_named_property(FlyString const&) const;
+
+    virtual WebIDL::ExceptionOr<void> set_value_of_new_named_property(String const&, JS::Value) override;
+    virtual WebIDL::ExceptionOr<void> set_value_of_existing_named_property(String const&, JS::Value) override;
+
+    virtual WebIDL::ExceptionOr<DidDeletionFail> delete_value(String const&) override;
+
+private:
+    explicit DOMStringMap(DOM::Element&);
+
+    virtual void initialize(JS::Realm&) override;
+    virtual void visit_edges(Cell::Visitor&) override;
+
+    // ^PlatformObject
+    virtual JS::Value named_item_value(FlyString const&) const override;
+    virtual Vector<FlyString> supported_property_names() const override;
+
+    struct NameValuePair {
+        FlyString name;
+        String value;
+    };
+
+    Vector<NameValuePair> get_name_value_pairs() const;
+
+    // https://html.spec.whatwg.org/multipage/dom.html#concept-domstringmap-element
+    JS::NonnullGCPtr<DOM::Element> m_associated_element;
+};
+
+}