1 files changed, 71 insertions, 0 deletions
diff --git a/sfx2/source/sidebar/AsynchronousCall.cxx b/sfx2/source/sidebar/AsynchronousCall.cxx
new file mode 100644
index 000000000..5a3ce8db2
--- /dev/null
+++ b/sfx2/source/sidebar/AsynchronousCall.cxx
@@ -0,0 +1,71 @@
+/* -*- 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 .
+ */
+
+#include <sfx2/sidebar/AsynchronousCall.hxx>
+#include <vcl/svapp.hxx>
+
+namespace sfx2::sidebar {
+
+AsynchronousCall::AsynchronousCall (const Action& rAction)
+    : maAction(rAction),
+      mnCallId(nullptr)
+{
+}
+
+AsynchronousCall::~AsynchronousCall()
+{
+    CancelRequest();
+}
+
+void AsynchronousCall::RequestCall()
+{
+    if (mnCallId == nullptr)
+    {
+        Link<void*,void> aLink (LINK(this, AsynchronousCall, HandleUserCall));
+        mnCallId = Application::PostUserEvent(aLink);
+    }
+}
+
+void AsynchronousCall::CancelRequest()
+{
+    if (mnCallId != nullptr)
+    {
+        Application::RemoveUserEvent(mnCallId);
+        mnCallId = nullptr;
+    }
+}
+
+void AsynchronousCall::Sync()
+{
+    if (mnCallId != nullptr) {
+        maAction();
+        CancelRequest();
+    }
+}
+
+IMPL_LINK_NOARG(AsynchronousCall, HandleUserCall, void*, void )
+{
+    mnCallId = nullptr;
+    if (maAction)
+        maAction();
+}
+
+} // end of namespace sfx2::sidebar
+
+/* vim:set shiftwidth=4 softtabstop=4 expandtab: */