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/EventHandler.cpp

@@ -0,0 +1,33 @@
+/*
+ * Copyright (c) 2022, Andreas Kling <andreas@ladybird.org>
+ *
+ * SPDX-License-Identifier: BSD-2-Clause
+ */
+
+#include <LibWeb/DOM/DOMEventListener.h>
+#include <LibWeb/HTML/EventHandler.h>
+
+namespace Web::HTML {
+
+JS_DEFINE_ALLOCATOR(EventHandler);
+
+EventHandler::EventHandler(ByteString s)
+    : value(move(s))
+{
+}
+
+EventHandler::EventHandler(WebIDL::CallbackType& c)
+    : value(&c)
+{
+}
+
+void EventHandler::visit_edges(Cell::Visitor& visitor)
+{
+    Base::visit_edges(visitor);
+    visitor.visit(listener);
+
+    if (auto* callback = value.get_pointer<JS::GCPtr<WebIDL::CallbackType>>())
+        visitor.visit(*callback);
+}
+
+}