1 files changed, 21 insertions, 0 deletions
diff --git a/dom/webidl/TreeContentView.webidl b/dom/webidl/TreeContentView.webidl
new file mode 100644
index 0000000000..c7ab0cb96f
--- /dev/null
+++ b/dom/webidl/TreeContentView.webidl
@@ -0,0 +1,21 @@
+/* -*- Mode: IDL; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
+/* 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/. */
+
+[ChromeOnly,
+ Exposed=Window]
+interface TreeContentView
+{
+  /**
+   * Retrieve the content item associated with the specified row.
+   */
+  [Throws]
+  Element? getItemAtIndex(long row);
+
+  /**
+   * Retrieve the index associated with the specified content item.
+   */
+  long getIndexOfItem(Element? item);
+};
+TreeContentView includes TreeView;