/* -*- 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_SLIDESHOW_EVENTHANDLER_HXX
#define INCLUDED_SLIDESHOW_EVENTHANDLER_HXX

#include <boost/shared_ptr.hpp>


/* Definition of EventHandler interface */

namespace slideshow
{
    namespace internal
    {

        /** Interface for event handling objects.

            Classes implementing this interface can be added to an
            EventMultiplexer object, and are called from there to
            handle events.
         */
        class EventHandler
        {
        public:
            virtual ~EventHandler() {}

            /** Handle the event.

                @return true, if this handler has successfully
                processed the event. When this method returns false,
                possibly other, less prioritized handlers are called,
                too.
             */
            virtual bool handleEvent() = 0;
        };

        typedef ::boost::shared_ptr< EventHandler > EventHandlerSharedPtr;

    }
}

#endif /* INCLUDED_SLIDESHOW_EVENTHANDLER_HXX */

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