1 files changed, 25 insertions, 0 deletions
diff --git a/remote/WindowManager.jsm b/remote/WindowManager.jsm
new file mode 100644
index 0000000000..c22feee36f
--- /dev/null
+++ b/remote/WindowManager.jsm
@@ -0,0 +1,25 @@
+/* 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/. */
+
+"use strict";
+
+var EXPORTED_SYMBOLS = ["WindowManager"];
+
+const { Services } = ChromeUtils.import("resource://gre/modules/Services.jsm");
+const { EventPromise } = ChromeUtils.import("chrome://remote/content/Sync.jsm");
+
+var WindowManager = {
+  async focus(window) {
+    if (window != Services.focus.activeWindow) {
+      const promises = [
+        EventPromise(window, "activate"),
+        EventPromise(window, "focus", { capture: true }),
+      ];
+
+      window.focus();
+
+      await Promise.all(promises);
+    }
+  },
+};