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140 lines
2.8 KiB
140 lines
2.8 KiB
/*
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safedelete.cpp - Kopete Groupwise Protocol
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Copyright (c) 2004 SUSE Linux AG http://www.suse.com
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Based on Iris, Copyright (C) 2003 Justin Karneges
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Kopete (c) 2002-2004 by the Kopete developers <kopete-devel@kde.org>
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*************************************************************************
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* *
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* This library is free software; you can redistribute it and/or *
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* modify it under the terms of the GNU Lesser General Public *
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* License as published by the Free Software Foundation; either *
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* version 2 of the License, or (at your option) any later version. *
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* *
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*************************************************************************
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*/
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#include "safedelete.h"
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#include <qtimer.h>
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//----------------------------------------------------------------------------
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// SafeDelete
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//----------------------------------------------------------------------------
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SafeDelete::SafeDelete()
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{
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lock = 0;
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}
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SafeDelete::~SafeDelete()
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{
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if(lock)
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lock->dying();
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}
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void SafeDelete::deleteLater(QObject *o)
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{
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if(!lock)
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deleteSingle(o);
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else
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list.append(o);
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}
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void SafeDelete::unlock()
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{
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lock = 0;
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deleteAll();
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}
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void SafeDelete::deleteAll()
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{
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if(list.isEmpty())
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return;
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QObjectListIt it(list);
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for(QObject *o; (o = it.current()); ++it)
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deleteSingle(o);
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list.clear();
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}
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void SafeDelete::deleteSingle(QObject *o)
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{
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#if QT_VERSION < 0x030000
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// roll our own QObject::deleteLater()
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SafeDeleteLater *sdl = SafeDeleteLater::ensureExists();
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sdl->deleteItLater(o);
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#else
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o->deleteLater();
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#endif
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}
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//----------------------------------------------------------------------------
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// SafeDeleteLock
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//----------------------------------------------------------------------------
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SafeDeleteLock::SafeDeleteLock(SafeDelete *sd)
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{
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own = false;
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if(!sd->lock) {
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_sd = sd;
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_sd->lock = this;
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}
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else
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_sd = 0;
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}
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SafeDeleteLock::~SafeDeleteLock()
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{
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if(_sd) {
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_sd->unlock();
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if(own)
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delete _sd;
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}
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}
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void SafeDeleteLock::dying()
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{
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_sd = new SafeDelete(*_sd);
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own = true;
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}
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//----------------------------------------------------------------------------
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// SafeDeleteLater
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//----------------------------------------------------------------------------
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SafeDeleteLater *SafeDeleteLater::self = 0;
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SafeDeleteLater *SafeDeleteLater::ensureExists()
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{
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if(!self)
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new SafeDeleteLater();
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return self;
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}
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SafeDeleteLater::SafeDeleteLater()
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{
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list.setAutoDelete(true);
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self = this;
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QTimer::singleShot(0, this, SLOT(explode()));
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}
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SafeDeleteLater::~SafeDeleteLater()
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{
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list.clear();
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self = 0;
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}
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void SafeDeleteLater::deleteItLater(QObject *o)
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{
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list.append(o);
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}
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void SafeDeleteLater::explode()
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{
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delete this;
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}
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#include "safedelete.moc"
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