/* -*- 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 .

 */

#pragma once

#include <tools/link.hxx>

struct ImplSVEvent;

namespace svxform

{

    //= DelayedEvent

    /** small class which encapsulates posting a Link instance as ApplicationUserEvent

        No thread safety at all here, just a little saving of code to type multiple times

    */

    class DelayedEvent

    {

    public:

        DelayedEvent( const Link<void*,void>& _rHandler )

            :m_aHandler( _rHandler )

            ,m_nEventId( nullptr )

        {

        }

        ~DelayedEvent()

        {

            CancelPendingCall();

        }

        /** calls the handler asynchronously

            If there's already a call pending, this previous call is cancelled.

        */

        void    Call();

        /** cancels a call which is currently pending

            If no call is currently pending, then this is ignored.

        */

        void    CancelPendingCall();

    private:

        Link<void*,void>  m_aHandler;

        ImplSVEvent * m_nEventId;

    private:

        DECL_LINK( OnCall, void*, void );

    private:

        DelayedEvent( const DelayedEvent& ) = delete;

        DelayedEvent& operator=( const DelayedEvent& ) = delete;

    };

}

/* vim:set shiftwidth=4 softtabstop=4 expandtab: */