86 lines
2.3 KiB
C
86 lines
2.3 KiB
C
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/*
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** Command & Conquer Renegade(tm)
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** Copyright 2025 Electronic Arts Inc.
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**
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** This program is free software: you can redistribute it and/or modify
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** it under the terms of the GNU General Public License as published by
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** the Free Software Foundation, either version 3 of the License, or
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** (at your option) any later version.
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**
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** This program is distributed in the hope that it will be useful,
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** but WITHOUT ANY WARRANTY; without even the implied warranty of
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** MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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** GNU General Public License for more details.
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**
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** You should have received a copy of the GNU General Public License
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** along with this program. If not, see <http://www.gnu.org/licenses/>.
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*/
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/******************************************************************************
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*
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* FILE
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* $Archive: /Commando/Code/wwlib/Signaler.h $
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*
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* DESCRIPTION
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* Lightweight two-way notification system. This class allows loose coupling
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* communication between two classes. The only details that need to be know
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* by both classes is the Signaler class it self and the type of signal they
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* communicate to each other.
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*
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* PROGRAMMER
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* Denzil E. Long, Jr.
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* $Author: Denzil_l $
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*
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* VERSION INFO
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* $Modtime: 11/16/01 11:19a $
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* $Revision: 4 $
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*
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******************************************************************************/
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#ifndef __SIGNALER_H__
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#define __SIGNALER_H__
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template<typename T> class Signaler
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{
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public:
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void SignalMe(Signaler<T>& target)
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{if (mConnection != &target) {Disconnect(); Connect(target); target.Connect(*this);}}
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void StopSignaling(Signaler<T>& target)
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{if (mConnection == &target) {Disconnect();}}
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void SendSignal(T& signal)
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{if (mConnection) {mConnection->ReceiveSignal(signal);}}
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virtual void ReceiveSignal(T&)
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{}
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virtual void SignalDropped(Signaler<T>& signaler)
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{mConnection = NULL;}
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protected:
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Signaler() :
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mConnection(NULL)
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{}
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virtual ~Signaler()
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{Disconnect();}
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void Connect(Signaler<T>& source)
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{mConnection = &source;}
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void Disconnect(void)
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{if (mConnection) {mConnection->SignalDropped(*this);} mConnection = NULL;}
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// Prevent copy and assignment
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Signaler(const Signaler&);
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const Signaler& operator=(const Signaler&);
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private:
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Signaler<T>* mConnection;
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};
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#endif // __SIGNALER_H__
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