Adding upstream version 115.7.0esr.upstream/115.7.0esrupstream

Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>

1 files changed, 22 insertions, 0 deletions

diff --git a/layout/generic/nsIScrollPositionListener.h b/layout/generic/nsIScrollPositionListener.h
new file mode 100644
index 0000000000..eadae2fe0c
--- /dev/null
+++ b/layout/generic/nsIScrollPositionListener.h
@@ -0,0 +1,22 @@
+/* -*- 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 nsIScrollPositionListener_h___
+#define nsIScrollPositionListener_h___
+
+#include "nsCoord.h"
+
+/**
+ * Provides a way to learn about scroll position changes of
+ * nsIScrollableFrame's.
+ */
+class nsIScrollPositionListener {
+ public:
+  virtual void ScrollPositionWillChange(nscoord aX, nscoord aY) = 0;
+  virtual void ScrollPositionDidChange(nscoord aX, nscoord aY) = 0;
+};
+
+#endif /* nsIScrollPositionListener_h___ */