LibWeb/IDB: Implement IDBDatabase::transaction()

Author: https://github.com/stelar7
Commit: 61384473ca
Pull-request: https://github.com/LadybirdBrowser/ladybird/pull/4476
Reviewed-by: https://github.com/gmta ✅

Libraries/LibWeb/IndexedDB/IDBDatabase.h

@@ -7,9 +7,11 @@
 #pragma once
 
 #include <LibGC/Ptr.h>
+#include <LibWeb/Bindings/IDBDatabasePrototype.h>
 #include <LibWeb/DOM/EventTarget.h>
 #include <LibWeb/HTML/DOMStringList.h>
 #include <LibWeb/IndexedDB/IDBRequest.h>
+#include <LibWeb/IndexedDB/IDBTransaction.h>
 #include <LibWeb/IndexedDB/Internal/Database.h>
 #include <LibWeb/IndexedDB/Internal/ObjectStore.h>
 #include <LibWeb/StorageAPI/StorageKey.h>
@@ -24,6 +26,11 @@ struct IDBObjectStoreParameters {
     bool auto_increment { false };
 };
 
+// https://w3c.github.io/IndexedDB/#dictdef-idbtransactionoptions
+struct IDBTransactionOptions {
+    Bindings::IDBTransactionDurability durability = Bindings::IDBTransactionDurability::Default;
+};
+
 // FIXME: I'm not sure if this object should do double duty as both the connection and the interface
 //        but the spec treats it as such...?
 // https://w3c.github.io/IndexedDB/#IDBDatabase-interface
@@ -66,6 +73,8 @@ public:
     WebIDL::ExceptionOr<GC::Ref<IDBObjectStore>> create_object_store(String const&, IDBObjectStoreParameters const&);
     WebIDL::ExceptionOr<void> delete_object_store(String const&);
 
+    WebIDL::ExceptionOr<GC::Ref<IDBTransaction>> transaction(Variant<String, Vector<String>>, Bindings::IDBTransactionMode = Bindings::IDBTransactionMode::Readonly, IDBTransactionOptions = { .durability = Bindings::IDBTransactionDurability::Default });
+
     void close();
 
     void set_onabort(WebIDL::CallbackType*);