From fe5bb7d77d9d5700c649170114965095069c460a Mon Sep 17 00:00:00 2001
From: stelar7 <dudedbz@gmail.com>
Date: Tue, 1 Apr 2025 18:38:55 +0200
Subject: [PATCH] LibWeb/IDB: Implement IDBObjectStore::indexNames

---
 Libraries/LibWeb/IndexedDB/IDBObjectStore.cpp | 12 ++++++++++++
 Libraries/LibWeb/IndexedDB/IDBObjectStore.h   |  1 +
 Libraries/LibWeb/IndexedDB/IDBObjectStore.idl |  2 +-
 3 files changed, 14 insertions(+), 1 deletion(-)

diff --git a/Libraries/LibWeb/IndexedDB/IDBObjectStore.cpp b/Libraries/LibWeb/IndexedDB/IDBObjectStore.cpp
index 35f7ea24f46..255026e319b 100644
--- a/Libraries/LibWeb/IndexedDB/IDBObjectStore.cpp
+++ b/Libraries/LibWeb/IndexedDB/IDBObjectStore.cpp
@@ -153,4 +153,16 @@ WebIDL::ExceptionOr<GC::Ref<IDBIndex>> IDBObjectStore::create_index(String const
     return IDBIndex::create(realm, index, *this);
 }
 
+// https://w3c.github.io/IndexedDB/#dom-idbobjectstore-indexnames
+GC::Ref<HTML::DOMStringList> IDBObjectStore::index_names()
+{
+    // 1. Let names be a list of the names of the indexes in this's index set.
+    Vector<String> names;
+    for (auto const& [name, index] : m_indexes)
+        names.append(name);
+
+    // 2. Return the result (a DOMStringList) of creating a sorted name list with names.
+    return create_a_sorted_name_list(realm(), names);
+}
+
 }
diff --git a/Libraries/LibWeb/IndexedDB/IDBObjectStore.h b/Libraries/LibWeb/IndexedDB/IDBObjectStore.h
index df6e0f03efb..8baf4a1869c 100644
--- a/Libraries/LibWeb/IndexedDB/IDBObjectStore.h
+++ b/Libraries/LibWeb/IndexedDB/IDBObjectStore.h
@@ -40,6 +40,7 @@ public:
     AK::HashMap<String, GC::Ref<Index>>& index_set() { return m_indexes; }
 
     WebIDL::ExceptionOr<GC::Ref<IDBIndex>> create_index(String const&, KeyPath, IDBIndexParameters options);
+    [[nodiscard]] GC::Ref<HTML::DOMStringList> index_names();
 
 protected:
     explicit IDBObjectStore(JS::Realm&, GC::Ref<ObjectStore>, GC::Ref<IDBTransaction>);
diff --git a/Libraries/LibWeb/IndexedDB/IDBObjectStore.idl b/Libraries/LibWeb/IndexedDB/IDBObjectStore.idl
index 4af455b4102..550f7d3c60f 100644
--- a/Libraries/LibWeb/IndexedDB/IDBObjectStore.idl
+++ b/Libraries/LibWeb/IndexedDB/IDBObjectStore.idl
@@ -6,7 +6,7 @@
 interface IDBObjectStore {
     attribute DOMString name;
     readonly attribute any keyPath;
-    [FIXME] readonly attribute DOMStringList indexNames;
+    readonly attribute DOMStringList indexNames;
     [SameObject] readonly attribute IDBTransaction transaction;
     readonly attribute boolean autoIncrement;