create SfxGroupId based on o3tl::strong_int

Change-Id: Iaccf16f29b6f4b1a2c712d1e5e2bd0fa4fdb5e71
Reviewed-on: https://gerrit.libreoffice.org/37108
Tested-by: Jenkins <ci@libreoffice.org>
Reviewed-by: Noel Grandin <noel.grandin@collabora.co.uk>

1 files changed, 56 insertions, 0 deletions

diff --git a/include/sfx2/groupid.hxx b/include/sfx2/groupid.hxx
new file mode 100644
index 000000000000..072ac723319b
--- /dev/null
+++ b/include/sfx2/groupid.hxx
@@ -0,0 +1,56 @@
+/* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*- */
+/*
+ * This file is part of the LibreOffice project.
+ *
+ * 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/.
+ *
+ * This file incorporates work covered by the following license notice:
+ *
+ *   Licensed to the Apache Software Foundation (ASF) under one or more
+ *   contributor license agreements. See the NOTICE file distributed
+ *   with this work for additional information regarding copyright
+ *   ownership. The ASF licenses this file to you under the Apache
+ *   License, Version 2.0 (the "License"); you may not use this file
+ *   except in compliance with the License. You may obtain a copy of
+ *   the License at http://www.apache.org/licenses/LICENSE-2.0 .
+ */
+#ifndef INCLUDED_SFX2_GROUPID_HXX
+#define INCLUDED_SFX2_GROUPID_HXX
+
+#ifdef __RSC
+#define SfxGroupId(x)  (x)
+#else
+
+#include <o3tl/strong_int.hxx>
+#include <sal/types.h>
+#include <functional>
+
+struct SfxGroupIdTag {};
+typedef o3tl::strong_int<sal_uInt16, SfxGroupIdTag> SfxGroupId;
+
+// make it hashable for storing in maps
+namespace std {
+
+  template <>
+  struct hash<SfxGroupId>
+  {
+    std::size_t operator()(const SfxGroupId& k) const
+    {
+      return std::hash<sal_uInt16>()((sal_uInt16)k);
+    }
+  };
+
+}
+
+// Make it easier to declare the constants in the .hrc files.
+// This way, we only have to mark the START constant as being SfxGroupId.
+inline SfxGroupId operator+(SfxGroupId lhs, sal_uInt16 rhs)
+{
+    return SfxGroupId((sal_uInt16)lhs + rhs);
+}
+#endif
+#endif
+
+/* vim:set shiftwidth=4 softtabstop=4 expandtab: */