1 files changed, 64 insertions, 0 deletions
diff --git a/dom/webidl/CustomElementRegistry.webidl b/dom/webidl/CustomElementRegistry.webidl
new file mode 100644
index 0000000000..8c10f2f41f
--- /dev/null
+++ b/dom/webidl/CustomElementRegistry.webidl
@@ -0,0 +1,64 @@
+/* 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 http://mozilla.org/MPL/2.0/. */
+
+// https://html.spec.whatwg.org/#dom-window-customelements
+[Exposed=Window]
+interface CustomElementRegistry {
+  [CEReactions, Throws, UseCounter]
+  undefined define(DOMString name, CustomElementConstructor constructor,
+                   optional ElementDefinitionOptions options = {});
+  [ChromeOnly, Throws]
+  undefined setElementCreationCallback(DOMString name, CustomElementCreationCallback callback);
+  (CustomElementConstructor or undefined) get(DOMString name);
+  [Throws]
+  Promise<CustomElementConstructor> whenDefined(DOMString name);
+  [CEReactions] undefined upgrade(Node root);
+};
+
+dictionary ElementDefinitionOptions {
+  DOMString extends;
+};
+
+callback constructor CustomElementConstructor = any ();
+
+[MOZ_CAN_RUN_SCRIPT_BOUNDARY]
+callback CustomElementCreationCallback = undefined (DOMString name);
+
+[MOZ_CAN_RUN_SCRIPT_BOUNDARY]
+callback LifecycleConnectedCallback = undefined();
+[MOZ_CAN_RUN_SCRIPT_BOUNDARY]
+callback LifecycleDisconnectedCallback = undefined();
+[MOZ_CAN_RUN_SCRIPT_BOUNDARY]
+callback LifecycleAdoptedCallback = undefined(Document? oldDocument,
+                                              Document? newDocment);
+[MOZ_CAN_RUN_SCRIPT_BOUNDARY]
+callback LifecycleAttributeChangedCallback = undefined(DOMString attrName,
+                                                       DOMString? oldValue,
+                                                       DOMString? newValue,
+                                                       DOMString? namespaceURI);
+[MOZ_CAN_RUN_SCRIPT_BOUNDARY]
+callback LifecycleFormAssociatedCallback = undefined(HTMLFormElement? form);
+[MOZ_CAN_RUN_SCRIPT_BOUNDARY]
+callback LifecycleFormResetCallback = undefined();
+[MOZ_CAN_RUN_SCRIPT_BOUNDARY]
+callback LifecycleFormDisabledCallback = undefined(boolean disabled);
+[MOZ_CAN_RUN_SCRIPT_BOUNDARY]
+callback LifecycleGetCustomInterfaceCallback = object?(any iid);
+
+// Unsorted is necessary until https://github.com/whatwg/html/issues/3580 is resolved.
+[GenerateInit, Unsorted]
+dictionary LifecycleCallbacks {
+  LifecycleConnectedCallback connectedCallback;
+  LifecycleDisconnectedCallback disconnectedCallback;
+  LifecycleAdoptedCallback adoptedCallback;
+  LifecycleAttributeChangedCallback attributeChangedCallback;
+  [ChromeOnly] LifecycleGetCustomInterfaceCallback getCustomInterfaceCallback;
+};
+
+[GenerateInit, Unsorted]
+dictionary FormAssociatedLifecycleCallbacks {
+  LifecycleFormAssociatedCallback formAssociatedCallback;
+  LifecycleFormResetCallback formResetCallback;
+  LifecycleFormDisabledCallback formDisabledCallback;
+};