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-rw-r--r--sfx2/source/sidebar/AsynchronousCall.cxx71
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diff --git a/sfx2/source/sidebar/AsynchronousCall.cxx b/sfx2/source/sidebar/AsynchronousCall.cxx
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+/* -*- 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: */