1 files changed, 54 insertions, 0 deletions
diff --git a/Userland/Libraries/LibWeb/HTML/DOMStringMap.h b/Userland/Libraries/LibWeb/HTML/DOMStringMap.h
new file mode 100644
index 0000000000..a29c85faa4
--- /dev/null
+++ b/Userland/Libraries/LibWeb/HTML/DOMStringMap.h
@@ -0,0 +1,54 @@
+/*
+ * Copyright (c) 2021, Luke Wilde <lukew@serenityos.org>
+ *
+ * SPDX-License-Identifier: BSD-2-Clause
+ */
+
+#pragma once
+
+#include <AK/RefCounted.h>
+#include <AK/Weakable.h>
+#include <LibWeb/Bindings/Wrappable.h>
+#include <LibWeb/Forward.h>
+
+namespace Web::HTML {
+
+// https://html.spec.whatwg.org/multipage/dom.html#domstringmap
+class DOMStringMap final
+    : public RefCounted<DOMStringMap>
+    , public Weakable<DOMStringMap>
+    , public Bindings::Wrappable {
+public:
+    using WrapperType = Bindings::DOMStringMapWrapper;
+
+    static NonnullRefPtr<DOMStringMap> create(DOM::Element& associated_element)
+    {
+        return adopt_ref(*new DOMStringMap(associated_element));
+    }
+
+    virtual ~DOMStringMap() override;
+
+    Vector<String> supported_property_names() const;
+
+    String determine_value_of_named_property(String const&) const;
+
+    DOM::ExceptionOr<void> set_value_of_new_named_property(String const&, String const&);
+    DOM::ExceptionOr<void> set_value_of_existing_named_property(String const&, String const&);
+
+    bool delete_existing_named_property(String const&);
+
+private:
+    DOMStringMap(DOM::Element&);
+
+    struct NameValuePair {
+        String name;
+        String value;
+    };
+
+    Vector<NameValuePair> get_name_value_pairs() const;
+
+    // https://html.spec.whatwg.org/multipage/dom.html#concept-domstringmap-element
+    NonnullRefPtr<DOM::Element> m_associated_element;
+};
+
+}