LibWeb/IDB: Implement IDBCursorWithValue interface

Author: https://github.com/stelar7
Commit: 296d9d74d8
Pull-request: https://github.com/LadybirdBrowser/ladybird/pull/4720
Reviewed-by: https://github.com/ADKaster ✅
Reviewed-by: https://github.com/AtkinsSJ ✅
Reviewed-by: https://github.com/shannonbooth

Libraries/LibWeb/IndexedDB/IDBCursorWithValue.h

@@ -0,0 +1,30 @@
+/*
+ * Copyright (c) 2025, stelar7 <dudedbz@gmail.com>
+ *
+ * SPDX-License-Identifier: BSD-2-Clause
+ */
+
+#pragma once
+
+#include <LibWeb/IndexedDB/IDBCursor.h>
+
+namespace Web::IndexedDB {
+
+// https://w3c.github.io/IndexedDB/#idbcursorwithvalue
+class IDBCursorWithValue : public IDBCursor {
+    WEB_PLATFORM_OBJECT(IDBCursorWithValue, IDBCursor);
+    GC_DECLARE_ALLOCATOR(IDBCursorWithValue);
+
+public:
+    virtual ~IDBCursorWithValue() override;
+
+    // https://w3c.github.io/IndexedDB/#dom-idbcursorwithvalue-value
+    [[nodiscard]] JS::Value value() { return m_value.value_or(JS::js_undefined()); }
+
+private:
+    explicit IDBCursorWithValue(JS::Realm&, CursorSourceHandle, GC::Ptr<Key>, Bindings::IDBCursorDirection, GotValue, GC::Ptr<Key>, JS::Value, GC::Ref<IDBKeyRange>, KeyOnly);
+    virtual void initialize(JS::Realm&) override;
+    virtual void visit_edges(Visitor& visitor) override;
+};
+
+}