1 files changed, 25 insertions, 0 deletions
diff --git a/toolkit/modules/nsIBrowserWindowTracker.idl b/toolkit/modules/nsIBrowserWindowTracker.idl
new file mode 100644
index 0000000000..60c6f5ec2e
--- /dev/null
+++ b/toolkit/modules/nsIBrowserWindowTracker.idl
@@ -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/. */
+#include "nsISupports.idl"
+
+[scriptable, uuid(f6190951-69d0-4ce5-b503-d2535d9de98c)]
+interface nsIVisibleTab : nsISupports
+{
+  attribute AString contentTitle;
+  attribute int64_t browserId;
+};
+
+[scriptable, uuid(846ff245-ccbf-4c7a-807e-060f02927651)]
+interface nsIBrowserWindowTracker : nsISupports
+{
+  /**
+   * Return array of browser tabs that are currently visible.
+   */
+  Array<nsIVisibleTab> getAllVisibleTabs();
+
+  /**
+   * Return browser having given browser id.
+   */
+  nsISupports getBrowserById(in uint64_t aBrowserId);
+};