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-rw-r--r--layout/base/CaretAssociationHint.h21
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diff --git a/layout/base/CaretAssociationHint.h b/layout/base/CaretAssociationHint.h
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+++ b/layout/base/CaretAssociationHint.h
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+/* -*- 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 mozilla_CaretAssociationHint_h
+#define mozilla_CaretAssociationHint_h
+
+namespace mozilla {
+
+/**
+ * Hint whether a caret is associated with the content before a
+ * given character offset (Before), or with the content after a given
+ * character offset (After).
+ */
+enum class CaretAssociationHint { Before, After };
+
+} // namespace mozilla
+
+#endif