1 files changed, 35 insertions, 0 deletions
diff --git a/testing/specialpowers/content/SpecialPowersEventUtils.sys.mjs b/testing/specialpowers/content/SpecialPowersEventUtils.sys.mjs
new file mode 100644
index 0000000000..68cec2b6e3
--- /dev/null
+++ b/testing/specialpowers/content/SpecialPowersEventUtils.sys.mjs
@@ -0,0 +1,35 @@
+/* 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/. */
+
+/**
+ * Loads a stub copy of EventUtils.js which can be used by things like
+ * content tasks without holding any direct references to windows.
+ */
+
+import { setTimeout } from "resource://gre/modules/Timer.sys.mjs";
+
+export let EventUtils = { setTimeout, window: {}, _EU_Ci: Ci, _EU_Cc: Cc };
+
+EventUtils.parent = EventUtils.window;
+
+EventUtils.synthesizeClick = element =>
+  new Promise(resolve => {
+    element.addEventListener("click", () => resolve(), { once: true });
+
+    EventUtils.synthesizeMouseAtCenter(
+      element,
+      { type: "mousedown", isSynthesized: false },
+      element.ownerGlobal
+    );
+    EventUtils.synthesizeMouseAtCenter(
+      element,
+      { type: "mouseup", isSynthesized: false },
+      element.ownerGlobal
+    );
+  });
+
+Services.scriptloader.loadSubScript(
+  "chrome://mochikit/content/tests/SimpleTest/EventUtils.js",
+  EventUtils
+);