diff options
Diffstat (limited to 'kopete/protocols/groupwise/libgroupwise/safedelete.cpp')
-rw-r--r-- | kopete/protocols/groupwise/libgroupwise/safedelete.cpp | 139 |
1 files changed, 139 insertions, 0 deletions
diff --git a/kopete/protocols/groupwise/libgroupwise/safedelete.cpp b/kopete/protocols/groupwise/libgroupwise/safedelete.cpp new file mode 100644 index 00000000..703e8ed3 --- /dev/null +++ b/kopete/protocols/groupwise/libgroupwise/safedelete.cpp @@ -0,0 +1,139 @@ +/* + safedelete.cpp - Kopete Groupwise Protocol + + Copyright (c) 2004 SUSE Linux AG http://www.suse.com + + Based on Iris, Copyright (C) 2003 Justin Karneges + + Kopete (c) 2002-2004 by the Kopete developers <kopete-devel@kde.org> + + ************************************************************************* + * * + * This library is free software; you can redistribute it and/or * + * modify it under the terms of the GNU Lesser General Public * + * License as published by the Free Software Foundation; either * + * version 2 of the License, or (at your option) any later version. * + * * + ************************************************************************* +*/ + +#include "safedelete.h" + +#include <qtimer.h> + +//---------------------------------------------------------------------------- +// SafeDelete +//---------------------------------------------------------------------------- +SafeDelete::SafeDelete() +{ + lock = 0; +} + +SafeDelete::~SafeDelete() +{ + if(lock) + lock->dying(); +} + +void SafeDelete::deleteLater(QObject *o) +{ + if(!lock) + deleteSingle(o); + else + list.append(o); +} + +void SafeDelete::unlock() +{ + lock = 0; + deleteAll(); +} + +void SafeDelete::deleteAll() +{ + if(list.isEmpty()) + return; + + QObjectListIt it(list); + for(QObject *o; (o = it.current()); ++it) + deleteSingle(o); + list.clear(); +} + +void SafeDelete::deleteSingle(QObject *o) +{ +#if QT_VERSION < 0x030000 + // roll our own QObject::deleteLater() + SafeDeleteLater *sdl = SafeDeleteLater::ensureExists(); + sdl->deleteItLater(o); +#else + o->deleteLater(); +#endif +} + +//---------------------------------------------------------------------------- +// SafeDeleteLock +//---------------------------------------------------------------------------- +SafeDeleteLock::SafeDeleteLock(SafeDelete *sd) +{ + own = false; + if(!sd->lock) { + _sd = sd; + _sd->lock = this; + } + else + _sd = 0; +} + +SafeDeleteLock::~SafeDeleteLock() +{ + if(_sd) { + _sd->unlock(); + if(own) + delete _sd; + } +} + +void SafeDeleteLock::dying() +{ + _sd = new SafeDelete(*_sd); + own = true; +} + +//---------------------------------------------------------------------------- +// SafeDeleteLater +//---------------------------------------------------------------------------- +SafeDeleteLater *SafeDeleteLater::self = 0; + +SafeDeleteLater *SafeDeleteLater::ensureExists() +{ + if(!self) + new SafeDeleteLater(); + return self; +} + +SafeDeleteLater::SafeDeleteLater() +{ + list.setAutoDelete(true); + self = this; + QTimer::singleShot(0, this, SLOT(explode())); +} + +SafeDeleteLater::~SafeDeleteLater() +{ + list.clear(); + self = 0; +} + +void SafeDeleteLater::deleteItLater(QObject *o) +{ + list.append(o); +} + +void SafeDeleteLater::explode() +{ + delete this; +} + +#include "safedelete.moc" + |