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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
+ 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: */