import FIREFOX_52_6_0esr_RELEASE from mozilla-esr52 hg repo

embedding/components/windowwatcher/nsAutoWindowStateHelper.h

@@ -0,0 +1,35 @@
+/* -*- Mode: C++; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
+/* vim: set ts=8 sts=2 et sw=2 tw=80: */
+/* 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/. */
+
+#ifndef __nsAutoWindowStateHelper_h
+#define __nsAutoWindowStateHelper_h
+
+#include "nsCOMPtr.h"
+#include "nsPIDOMWindow.h"
+
+/**
+ * Helper class for dealing with notifications around opening modal
+ * windows.
+ */
+
+class nsPIDOMWindowOuter;
+
+class nsAutoWindowStateHelper
+{
+public:
+  explicit nsAutoWindowStateHelper(nsPIDOMWindowOuter* aWindow);
+  ~nsAutoWindowStateHelper();
+
+  bool DefaultEnabled() { return mDefaultEnabled; }
+
+protected:
+  bool DispatchEventToChrome(const char* aEventName);
+
+  nsCOMPtr<nsPIDOMWindowOuter> mWindow;
+  bool mDefaultEnabled;
+};
+
+#endif