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diff --git a/sw/source/core/inc/DocumentTimerManager.hxx b/sw/source/core/inc/DocumentTimerManager.hxx
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+++ b/sw/source/core/inc/DocumentTimerManager.hxx
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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 .
+ */
+
+#ifndef INCLUDED_SW_SOURCE_CORE_INC_DOCUMENTTIMERMANAGER_HXX
+#define INCLUDED_SW_SOURCE_CORE_INC_DOCUMENTTIMERMANAGER_HXX
+
+#include <IDocumentTimerAccess.hxx>
+#include <SwDocIdle.hxx>
+
+#include <sal/types.h>
+#include <tools/link.hxx>
+
+class SwDoc;
+
+namespace sw
+{
+
+class DocumentTimerManager : public IDocumentTimerAccess
+{
+public:
+    enum class IdleJob
+    {
+        None, ///< document has no idle jobs to do
+        Busy, ///< document is busy and idle jobs are postponed
+        Grammar,
+        Layout,
+        Fields,
+    };
+
+    DocumentTimerManager( SwDoc& i_rSwdoc );
+    virtual ~DocumentTimerManager() override;
+
+    void StartIdling() override;
+
+    void StopIdling() override;
+
+    void BlockIdling() override;
+
+    void UnblockIdling() override;
+
+    bool IsDocIdle() const override;
+
+private:
+    DocumentTimerManager(DocumentTimerManager const&) = delete;
+    DocumentTimerManager& operator=(DocumentTimerManager const&) = delete;
+
+    /// Delay starting idle jobs to allow for post-load activity.
+    /// Used by LOK only.
+    DECL_LINK( FireIdleJobsTimeout, Timer *, void );
+
+    DECL_LINK( DoIdleJobs, Timer *, void );
+
+    IdleJob GetNextIdleJob() const;
+
+    SwDoc& m_rDoc;
+
+    sal_uInt32 m_nIdleBlockCount; ///< Don't run the Idle, if > 0
+    bool m_bStartOnUnblock; ///< true, if the last unblock should start the timer
+    SwDocIdle m_aDocIdle;
+    Timer m_aFireIdleJobsTimer;
+    bool m_bWaitForLokInit; ///< true if we waited for LOK to initialize already.
+};
+
+inline bool DocumentTimerManager::IsDocIdle() const
+{
+    return ((0 == m_nIdleBlockCount) && (GetNextIdleJob() != IdleJob::Busy));
+}
+
+}
+
+#endif
+
+/* vim:set shiftwidth=4 softtabstop=4 expandtab: */