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# dom_misc.h

    00001 /*
    00002  * This file is part of the DOM implementation for KDE.
    00003  *
    00004  * (C) 1999 Lars Knoll (knoll@kde.org)
    00005  *
    00006  * This library is free software; you can redistribute it and/or
    00007  * modify it under the terms of the GNU Library General Public
    00008  * License as published by the Free Software Foundation; either
    00009  * version 2 of the License, or (at your option) any later version.
    00010  *
    00011  * This library is distributed in the hope that it will be useful,
    00012  * but WITHOUT ANY WARRANTY; without even the implied warranty of
    00013  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
    00014  * Library General Public License for more details.
    00015  *
    00016  * You should have received a copy of the GNU Library General Public License
    00017  * along with this library; see the file COPYING.LIB.  If not, write to
    00018  * the Free Software Foundation, Inc., 59 Temple Place - Suite 330,
    00019  * Boston, MA 02111-1307, USA.
    00020  *
    00021  */
    00022 #ifndef _DOM_RefCountImpl_h_
    00023 #define _DOM_RefCountImpl_h_
    00024
    00025 #include <kdelibs_export.h>
    00026
    00027 namespace DOM {
    00028
    00029 /*
    00030  * This implements the reference counting scheme used for all internal
    00031  * DOM objects.
    00032  *
    00033  * Other objects should overload deleteMe() to fit their needs. The default
    00034  * implementation deletes the object if the ref count drops to 0.
    00035  */
    00036 class KHTML_EXPORT DomShared
    00037 {
    00038 public:
    00039   DomShared() : _ref( 0 ) {}
    00040   virtual ~DomShared();
    00041
    00042   /* Overload this function if you want a different deletion behavior
    00043    */
    00044   virtual bool deleteMe();
    00045
    00046   void ref() { _ref++; }
    00047   void deref() { if(_ref) _ref--; if(!_ref && deleteMe()) delete this; }
    00048   bool hasOneRef() const { return _ref == 1; }
    00049   unsigned int refCount() const { return _ref; }
    00050
    00051 protected:
    00052     // the number of DOMObjects referencing this Node
    00053     // An implementation object will delete itself, if it has
    00054     // no DOMObject referencing it, and deleteMe() returns true.
    00055     unsigned int _ref;
    00056 };
    00057
    00058 } // namespace
    00059
    00060 #endif

This file is part of the documentation for khtml Library Version 3.4.1.
Documentation copyright © 1996-2004 the KDE developers.
Generated on Sat Jun 11 20:33:10 2005 by doxygen 1.4.1 written by Dimitri van Heesch, © 1997-2003