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63 lines
2.0 KiB
63 lines
2.0 KiB
/* -*- mode: C++; c-file-style: "gnu" -*- |
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* |
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* This file is part of KMail, the KDE mail client. |
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* Copyright (c) 2003 Carsten Burghardt <burghardt@kde.org> |
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* |
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* KMail is free software; you can redistribute it and/or modify it |
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* under the terms of the GNU General Public License, version 2, as |
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* published by the Free Software Foundation. |
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* |
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* KMail is distributed in the hope that it will be useful, but |
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* WITHOUT ANY WARRANTY; without even the implied warranty of |
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU |
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* 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, write to the Free Software |
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* Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA |
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* |
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* In addition, as a special exception, the copyright holders give |
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* permission to link the code of this program with any edition of |
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* the Qt library by Trolltech AS, Norway (or with modified versions |
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* of Qt that use the same license as Qt), and distribute linked |
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* combinations including the two. You must obey the GNU General |
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* Public License in all respects for all of the code used other than |
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* Qt. If you modify this file, you may extend this exception to |
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* your version of the file, but you are not obligated to do so. If |
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* you do not wish to do so, delete this exception statement from |
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* your version. |
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*/ |
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#ifndef _SUBJECT |
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#define _SUBJECT |
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#include <qptrlist.h> |
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namespace KMail { |
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class IObserver; |
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class ISubject |
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{ |
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public : |
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virtual ~ISubject(); |
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public : |
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/** Attach the observer if it is not in the list yet */ |
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virtual void attach( IObserver * ); |
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/** Detach the observer */ |
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virtual void detach( IObserver * ); |
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/** Notify all observers ( call observer->update() ) */ |
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virtual void notify(); |
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// Protected constructor and attribute(s) |
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protected : |
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ISubject(); |
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QPtrList<IObserver> mObserverList; |
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}; |
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} // namespace KMail |
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#endif
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