1 files changed, 26 insertions, 0 deletions
diff --git a/dom/webidl/VisualViewport.webidl b/dom/webidl/VisualViewport.webidl
new file mode 100644
index 0000000000..bde4b9a1b5
--- /dev/null
+++ b/dom/webidl/VisualViewport.webidl
@@ -0,0 +1,26 @@
+/* -*- 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/.
+ *
+ * The origin of this IDL file is:
+ * https://wicg.github.io/visual-viewport/#the-visualviewport-interface
+ */
+
+[Pref="dom.visualviewport.enabled",
+ Exposed=Window]
+interface VisualViewport : EventTarget {
+  readonly attribute double offsetLeft;
+  readonly attribute double offsetTop;
+
+  readonly attribute double pageLeft;
+  readonly attribute double pageTop;
+
+  readonly attribute double width;
+  readonly attribute double height;
+
+  readonly attribute double scale;
+
+  attribute EventHandler onresize;
+  attribute EventHandler onscroll;
+};