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Diffstat (limited to 'tdehtml/dom/dom_misc.h')
-rw-r--r-- | tdehtml/dom/dom_misc.h | 60 |
1 files changed, 60 insertions, 0 deletions
diff --git a/tdehtml/dom/dom_misc.h b/tdehtml/dom/dom_misc.h new file mode 100644 index 000000000..4cded0f00 --- /dev/null +++ b/tdehtml/dom/dom_misc.h @@ -0,0 +1,60 @@ +/* + * This file is part of the DOM implementation for KDE. + * + * (C) 1999 Lars Knoll ([email protected]) + * + * This library is free software; you can redistribute it and/or + * modify it under the terms of the GNU Library General Public + * License as published by the Free Software Foundation; either + * version 2 of the License, or (at your option) any later version. + * + * This library is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU + * Library General Public License for more details. + * + * You should have received a copy of the GNU Library General Public License + * along with this library; see the file COPYING.LIB. If not, write to + * the Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor, + * Boston, MA 02110-1301, USA. + * + */ +#ifndef _DOM_RefCountImpl_h_ +#define _DOM_RefCountImpl_h_ + +#include <tdelibs_export.h> + +namespace DOM { + +/* + * This implements the reference counting scheme used for all internal + * DOM objects. + * + * Other objects should overload deleteMe() to fit their needs. The default + * implementation deletes the object if the ref count drops to 0. + */ +class KHTML_EXPORT DomShared +{ +public: + DomShared() : _ref( 0 ) {} + virtual ~DomShared(); + + /* Overload this function if you want a different deletion behavior + */ + virtual bool deleteMe(); + + void ref() { _ref++; } + void deref() { if(_ref) _ref--; if(!_ref && deleteMe()) delete this; } + bool hasOneRef() const { return _ref == 1; } + unsigned int refCount() const { return _ref; } + +protected: + // the number of DOMObjects referencing this Node + // An implementation object will delete itself, if it has + // no DOMObject referencing it, and deleteMe() returns true. + unsigned int _ref; +}; + +} // namespace + +#endif |