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       1             : /* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*- */
       2             : /*
       3             :  * This file is part of the LibreOffice project.
       4             :  *
       5             :  * This Source Code Form is subject to the terms of the Mozilla Public
       6             :  * License, v. 2.0. If a copy of the MPL was not distributed with this
       7             :  * file, You can obtain one at http://mozilla.org/MPL/2.0/.
       8             :  *
       9             :  * This file incorporates work covered by the following license notice:
      10             :  *
      11             :  *   Licensed to the Apache Software Foundation (ASF) under one or more
      12             :  *   contributor license agreements. See the NOTICE file distributed
      13             :  *   with this work for additional information regarding copyright
      14             :  *   ownership. The ASF licenses this file to you under the Apache
      15             :  *   License, Version 2.0 (the "License"); you may not use this file
      16             :  *   except in compliance with the License. You may obtain a copy of
      17             :  *   the License at http://www.apache.org/licenses/LICENSE-2.0 .
      18             :  */
      19             : #ifndef INCLUDED_SLIDESHOW_SOURCE_INC_EVENT_HXX
      20             : #define INCLUDED_SLIDESHOW_SOURCE_INC_EVENT_HXX
      21             : 
      22             : #include "disposable.hxx"
      23             : #include <rtl/ustring.hxx>
      24             : #include <boost/shared_ptr.hpp>
      25             : #include <vector>
      26             : 
      27             : namespace slideshow {
      28             : namespace internal {
      29             : 
      30             : /** Definition of Event interface
      31             :  */
      32           0 : class Event : public Disposable
      33             : {
      34             : public:
      35           0 :     Event (const OUString& rsDescription) : msDescription(rsDescription) {}
      36             : 
      37             :     /** Execute the event.
      38             : 
      39             :         @return true, if event was successfully executed.
      40             :     */
      41             :     virtual bool fire() = 0;
      42             : 
      43             :     /** Query whether this event is still charged, i.e. able
      44             :         to fire.
      45             : 
      46             :         Inactive events are ignored by the normal event
      47             :         containers (EventQueue, UserEventQueue etc.), and no
      48             :         explicit fire() is called upon them.
      49             : 
      50             :         @return true, if this event has already been fired.
      51             :     */
      52             :     virtual bool isCharged() const = 0;
      53             : 
      54             :     /** Query the activation time instant this event shall be
      55             :         fired, if it was inserted at instant nCurrentTime into
      56             :         the queue.
      57             : 
      58             :         @param nCurrentTime
      59             :         The time from which the activation time is to be
      60             :         calculated from.
      61             : 
      62             :         @return the time instant in seconds, on which this
      63             :         event is to be fired.
      64             :     */
      65             :     virtual double getActivationTime( double nCurrentTime ) const = 0;
      66             : 
      67             :     const OUString& GetDescription (void) const { return msDescription; }
      68             : 
      69             : private:
      70             :     const OUString msDescription;
      71             : };
      72             : 
      73             : typedef ::boost::shared_ptr< Event > EventSharedPtr;
      74             : typedef ::std::vector< EventSharedPtr > VectorOfEvents;
      75             : 
      76             : } // namespace internal
      77             : } // namespace presentation
      78             : 
      79             : #endif // INCLUDED_SLIDESHOW_SOURCE_INC_EVENT_HXX
      80             : 
      81             : /* vim:set shiftwidth=4 softtabstop=4 expandtab: */