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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 _SDR_EVENT_EVENTHANDLER_HXX
#define _SDR_EVENT_EVENTHANDLER_HXX
#include <sal/types.h>
#include <vector>
#include <vcl/timer.hxx>
//////////////////////////////////////////////////////////////////////////////
// predeclarations
namespace sdr
{
namespace event
{
class BaseEvent;
class EventHandler;
// typedefs for a list of BaseEvents
typedef ::std::vector< BaseEvent* > BaseEventVector;
} // end of namespace event
} // end of namespace sdr
//////////////////////////////////////////////////////////////////////////////
namespace sdr
{
namespace event
{
class BaseEvent
{
// the EventHandler this event is registered at
EventHandler& mrEventHandler;
public:
// basic constructor.
BaseEvent(EventHandler& rEventHandler);
// destructor
virtual ~BaseEvent();
// the called method if the event is triggered
virtual void ExecuteEvent() = 0;
};
} // end of namespace event
} // end of namespace sdr
//////////////////////////////////////////////////////////////////////////////
namespace sdr
{
namespace event
{
class EventHandler
{
BaseEventVector maVector;
// to allow BaseEvents to use the add/remove functionality
friend class BaseEvent;
// methods to add/remove events. These are private since
// they are used from BaseEvent only.
void AddEvent(BaseEvent& rBaseEvent);
void RemoveEvent(BaseEvent& rBaseEvent);
// access to a event, 0L when no more events
BaseEvent* GetEvent();
public:
// basic constructor.
EventHandler();
// destructor
virtual ~EventHandler();
// Trigger and consume the events
virtual void ExecuteEvents();
// for control
sal_Bool IsEmpty() const;
};
} // end of namespace event
} // end of namespace sdr
//////////////////////////////////////////////////////////////////////////////
namespace sdr
{
namespace event
{
class TimerEventHandler : public EventHandler, public Timer
{
public:
// basic constructor.
TimerEventHandler(sal_uInt32 nTimeout = 1L);
// destructor
virtual ~TimerEventHandler();
// The timer when it is triggered; from class Timer
virtual void Timeout();
// reset the timer
void Restart();
};
} // end of namespace event
} // end of namespace sdr
//////////////////////////////////////////////////////////////////////////////
#endif //_SDR_EVENT_EVENTHANDLER_HXX
/* vim:set shiftwidth=4 softtabstop=4 expandtab: */
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