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-rw-r--r--kopete/protocols/yahoo/libkyahoo/safedelete.cpp139
1 files changed, 139 insertions, 0 deletions
diff --git a/kopete/protocols/yahoo/libkyahoo/safedelete.cpp b/kopete/protocols/yahoo/libkyahoo/safedelete.cpp
new file mode 100644
index 00000000..703e8ed3
--- /dev/null
+++ b/kopete/protocols/yahoo/libkyahoo/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"
+