Everywhere: Hoist the Libraries folder to the top-level

Libraries/LibWeb/HTML/ElementInternals.cpp

@@ -0,0 +1,61 @@
+/*
+ * Copyright (c) 2024, the Ladybird developers.
+ *
+ * SPDX-License-Identifier: BSD-2-Clause
+ */
+
+#include <LibWeb/Bindings/ElementInternalsPrototype.h>
+#include <LibWeb/Bindings/Intrinsics.h>
+#include <LibWeb/DOM/ShadowRoot.h>
+#include <LibWeb/HTML/ElementInternals.h>
+#include <LibWeb/HTML/HTMLElement.h>
+
+namespace Web::HTML {
+
+JS_DEFINE_ALLOCATOR(ElementInternals);
+
+JS::NonnullGCPtr<ElementInternals> ElementInternals::create(JS::Realm& realm, HTMLElement& target_element)
+{
+    return realm.heap().allocate<ElementInternals>(realm, realm, target_element);
+}
+
+ElementInternals::ElementInternals(JS::Realm& realm, HTMLElement& target_element)
+    : Bindings::PlatformObject(realm)
+    , m_target_element(target_element)
+{
+}
+
+// https://html.spec.whatwg.org/#dom-elementinternals-shadowroot
+JS::GCPtr<DOM::ShadowRoot> ElementInternals::shadow_root() const
+{
+    // 1. Let target be this's target element.
+    auto target = m_target_element;
+
+    // 2. If target is not a shadow host, then return null.
+    if (!target->is_shadow_host())
+        return nullptr;
+
+    // 3. Let shadow be target's shadow root.
+    auto shadow = target->shadow_root();
+
+    // 4. If shadow's available to element internals is false, then return null.
+    if (!shadow->available_to_element_internals())
+        return nullptr;
+
+    // 5. Return shadow.
+    return shadow;
+}
+
+void ElementInternals::initialize(JS::Realm& realm)
+{
+    Base::initialize(realm);
+    WEB_SET_PROTOTYPE_FOR_INTERFACE(ElementInternals);
+}
+
+void ElementInternals::visit_edges(JS::Cell::Visitor& visitor)
+{
+    Base::visit_edges(visitor);
+    visitor.visit(m_target_element);
+}
+
+}