Stub out IDBIndex (#38813)

Stubs the IDBIndex interface.

Testing: Mostly stubbing. Eventually covered by WPT.
Fixes: Partially #38100

---------

Signed-off-by: Ashwin Naren <arihant2math@gmail.com>

components/script/dom/idbindex.rs

@@ -0,0 +1,76 @@
+/* This Source Code Form is subject to the terms of the Mozilla Public
+ * License, v. 2.0. If a copy of the MPL was not distributed with this
+ * file, You can obtain one at https://mozilla.org/MPL/2.0/. */
+use dom_struct::dom_struct;
+use script_bindings::codegen::GenericBindings::IDBIndexBinding::IDBIndexMethods;
+use script_bindings::str::DOMString;
+
+use crate::dom::bindings::reflector::{Reflector, reflect_dom_object};
+use crate::dom::bindings::root::DomRoot;
+use crate::dom::globalscope::GlobalScope;
+use crate::dom::idbobjectstore::IDBObjectStore;
+use crate::script_runtime::CanGc;
+
+#[dom_struct]
+pub(crate) struct IDBIndex {
+    reflector_: Reflector,
+    object_store: DomRoot<IDBObjectStore>,
+    name: DOMString,
+    multi_entry: bool,
+    unique: bool,
+}
+
+impl IDBIndex {
+    pub fn new_inherited(
+        object_store: DomRoot<IDBObjectStore>,
+        name: DOMString,
+        multi_entry: bool,
+        unique: bool,
+    ) -> IDBIndex {
+        IDBIndex {
+            reflector_: Reflector::new(),
+            object_store,
+            name,
+            multi_entry,
+            unique,
+        }
+    }
+
+    #[expect(dead_code)]
+    pub fn new(
+        global: &GlobalScope,
+        object_store: DomRoot<IDBObjectStore>,
+        name: DOMString,
+        multi_entry: bool,
+        unique: bool,
+        can_gc: CanGc,
+    ) -> DomRoot<IDBIndex> {
+        reflect_dom_object(
+            Box::new(IDBIndex::new_inherited(
+                object_store,
+                name,
+                multi_entry,
+                unique,
+            )),
+            global,
+            can_gc,
+        )
+    }
+}
+
+impl IDBIndexMethods<crate::DomTypeHolder> for IDBIndex {
+    // https://www.w3.org/TR/IndexedDB/#dom-idbindex-objectstore
+    fn ObjectStore(&self) -> DomRoot<IDBObjectStore> {
+        self.object_store.clone()
+    }
+
+    // https://www.w3.org/TR/IndexedDB/#dom-idbindex-multientry
+    fn MultiEntry(&self) -> bool {
+        self.multi_entry
+    }
+
+    // https://www.w3.org/TR/IndexedDB/#dom-idbindex-unique
+    fn Unique(&self) -> bool {
+        self.unique
+    }
+}

components/script/dom/mod.rs

@@ -428,6 +428,7 @@ pub(crate) mod htmlunknownelement;
 pub(crate) mod htmlvideoelement;
 pub(crate) mod idbdatabase;
 pub(crate) mod idbfactory;
+pub(crate) mod idbindex;
 pub(crate) mod idbkeyrange;
 pub(crate) mod idbobjectstore;
 pub(crate) mod idbopendbrequest;

components/script_bindings/webidls/IDBIndex.webidl

@@ -0,0 +1,31 @@
+/* This Source Code Form is subject to the terms of the Mozilla Public
+ * License, v. 2.0. If a copy of the MPL was not distributed with this
+ * file, You can obtain one at https://mozilla.org/MPL/2.0/. */
+/*
+ * The origin of this IDL file is
+ * https://w3c.github.io/IndexedDB/#idbindex
+ *
+ */
+
+[Pref="dom_indexeddb_enabled", Exposed=(Window,Worker)]
+interface IDBIndex {
+  // attribute DOMString name;
+  [SameObject] readonly attribute IDBObjectStore objectStore;
+  // readonly attribute any keyPath;
+  readonly attribute boolean multiEntry;
+  readonly attribute boolean unique;
+
+  // [NewObject] IDBRequest get(any query);
+  // [NewObject] IDBRequest getKey(any query);
+  // [NewObject] IDBRequest getAll(optional any queryOrOptions,
+  //                               optional [EnforceRange] unsigned long count);
+  // [NewObject] IDBRequest getAllKeys(optional any queryOrOptions,
+  //                                   optional [EnforceRange] unsigned long count);
+  // [NewObject] IDBRequest getAllRecords(optional IDBGetAllOptions options = {});
+  // [NewObject] IDBRequest count(optional any query);
+
+  // [NewObject] IDBRequest openCursor(optional any query,
+  //                                   optional IDBCursorDirection direction = "next");
+  // [NewObject] IDBRequest openKeyCursor(optional any query,
+  //                                      optional IDBCursorDirection direction = "next");
+};

tests/wpt/meta/IndexedDB/idlharness.any.js.ini

@@ -32,39 +32,12 @@
   [IDBObjectStore interface: operation deleteIndex(DOMString)]
     expected: FAIL
 
-  [IDBIndex interface: existence and properties of interface object]
-    expected: FAIL
-
-  [IDBIndex interface object length]
-    expected: FAIL
-
-  [IDBIndex interface object name]
-    expected: FAIL
-
-  [IDBIndex interface: existence and properties of interface prototype object]
-    expected: FAIL
-
-  [IDBIndex interface: existence and properties of interface prototype object's "constructor" property]
-    expected: FAIL
-
-  [IDBIndex interface: existence and properties of interface prototype object's @@unscopables property]
-    expected: FAIL
-
   [IDBIndex interface: attribute name]
     expected: FAIL
 
-  [IDBIndex interface: attribute objectStore]
-    expected: FAIL
-
   [IDBIndex interface: attribute keyPath]
     expected: FAIL
 
-  [IDBIndex interface: attribute multiEntry]
-    expected: FAIL
-
-  [IDBIndex interface: attribute unique]
-    expected: FAIL
-
   [IDBIndex interface: operation get(any)]
     expected: FAIL
 
@@ -196,39 +169,12 @@
   [IDBObjectStore interface: operation deleteIndex(DOMString)]
     expected: FAIL
 
-  [IDBIndex interface: existence and properties of interface object]
-    expected: FAIL
-
-  [IDBIndex interface object length]
-    expected: FAIL
-
-  [IDBIndex interface object name]
-    expected: FAIL
-
-  [IDBIndex interface: existence and properties of interface prototype object]
-    expected: FAIL
-
-  [IDBIndex interface: existence and properties of interface prototype object's "constructor" property]
-    expected: FAIL
-
-  [IDBIndex interface: existence and properties of interface prototype object's @@unscopables property]
-    expected: FAIL
-
   [IDBIndex interface: attribute name]
     expected: FAIL
 
-  [IDBIndex interface: attribute objectStore]
-    expected: FAIL
-
   [IDBIndex interface: attribute keyPath]
     expected: FAIL
 
-  [IDBIndex interface: attribute multiEntry]
-    expected: FAIL
-
-  [IDBIndex interface: attribute unique]
-    expected: FAIL
-
   [IDBIndex interface: operation get(any)]
     expected: FAIL
 

tests/wpt/meta/workers/semantics/interface-objects/001.worker.js.ini

@@ -5,9 +5,6 @@
   [The CanvasPath interface object should be exposed.]
     expected: FAIL
 
-  [The IDBIndex interface object should be exposed.]
-    expected: FAIL
-
   [The IDBCursor interface object should be exposed.]
     expected: FAIL