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/WindowEventHandlers.h

@@ -0,0 +1,47 @@
+/*
+ * Copyright (c) 2022, Luke Wilde <lukew@serenityos.org>
+ *
+ * SPDX-License-Identifier: BSD-2-Clause
+ */
+
+#pragma once
+
+#include <AK/Forward.h>
+#include <LibWeb/Forward.h>
+
+#define ENUMERATE_WINDOW_EVENT_HANDLERS(E)                        \
+    E(onafterprint, HTML::EventNames::afterprint)                 \
+    E(onbeforeprint, HTML::EventNames::beforeprint)               \
+    E(onbeforeunload, HTML::EventNames::beforeunload)             \
+    E(onhashchange, HTML::EventNames::hashchange)                 \
+    E(onlanguagechange, HTML::EventNames::languagechange)         \
+    E(onmessage, HTML::EventNames::message)                       \
+    E(onmessageerror, HTML::EventNames::messageerror)             \
+    E(onoffline, HTML::EventNames::offline)                       \
+    E(ononline, HTML::EventNames::online)                         \
+    E(onpagehide, HTML::EventNames::pagehide)                     \
+    E(onpageshow, HTML::EventNames::pageshow)                     \
+    E(onpopstate, HTML::EventNames::popstate)                     \
+    E(onrejectionhandled, HTML::EventNames::rejectionhandled)     \
+    E(onstorage, HTML::EventNames::storage)                       \
+    E(onunhandledrejection, HTML::EventNames::unhandledrejection) \
+    E(onunload, HTML::EventNames::unload)
+
+namespace Web::HTML {
+
+class WindowEventHandlers {
+public:
+    virtual ~WindowEventHandlers();
+
+#undef __ENUMERATE
+#define __ENUMERATE(attribute_name, event_name)       \
+    void set_##attribute_name(WebIDL::CallbackType*); \
+    WebIDL::CallbackType* attribute_name();
+    ENUMERATE_WINDOW_EVENT_HANDLERS(__ENUMERATE)
+#undef __ENUMERATE
+
+protected:
+    virtual JS::GCPtr<DOM::EventTarget> window_event_handlers_to_event_target() = 0;
+};
+
+}