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+/* -*- 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 PageTransitionEvent interface is used for the pageshow and
+ * pagehide events, which are generic events that apply to both page
+ * load/unload and saving/restoring a document from session history.
+ */
+
+[Constructor(DOMString type, optional PageTransitionEventInit eventInitDict)]
+interface PageTransitionEvent : Event
+{
+ /**
+ * Set to true if the document has been or will be persisted across
+ * firing of the event. For example, if a document is being cached in
+ * session history, |persisted| is true for the PageHide event.
+ */
+ readonly attribute boolean persisted;
+};
+
+dictionary PageTransitionEventInit : EventInit
+{
+ boolean persisted = false;
+};