UDK 3.2.7 C/C++ API Reference
cppu/FreeReference.hxx
Go to the documentation of this file.
00001 /* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*- */
00002 /*************************************************************************
00003  *
00004  * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
00005  *
00006  * Copyright 2000, 2010 Oracle and/or its affiliates.
00007  *
00008  * OpenOffice.org - a multi-platform office productivity suite
00009  *
00010  * This file is part of OpenOffice.org.
00011  *
00012  * OpenOffice.org is free software: you can redistribute it and/or modify
00013  * it under the terms of the GNU Lesser General Public License version 3
00014  * only, as published by the Free Software Foundation.
00015  *
00016  * OpenOffice.org is distributed in the hope that it will be useful,
00017  * but WITHOUT ANY WARRANTY; without even the implied warranty of
00018  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
00019  * GNU Lesser General Public License version 3 for more details
00020  * (a copy is included in the LICENSE file that accompanied this code).
00021  *
00022  * You should have received a copy of the GNU Lesser General Public License
00023  * version 3 along with OpenOffice.org.  If not, see
00024  * <http://www.openoffice.org/license.html>
00025  * for a copy of the LGPLv3 License.
00026  *
00027  ************************************************************************/
00028 
00029 #ifndef INCLUDED_cppu_FreeReference_hxx
00030 #define INCLUDED_cppu_FreeReference_hxx
00031 
00032 #include "uno/environment.hxx"
00033 #include "cppu/Map.hxx"
00034 #include "com/sun/star/uno/Reference.h"
00035 
00036 
00037 namespace cssuno = com::sun::star::uno;
00038 
00039 
00040 namespace cppu
00041 {
00047     template< class T >
00048     class FreeReference
00049     {
00050         cssuno::Environment    m_env;
00051         T                   *  m_pObject;
00052 
00053     public:
00054         FreeReference() : m_pObject(NULL) {}
00055 
00056         FreeReference(T * pObject, __sal_NoAcquire)
00057             : m_env(cssuno::Environment::getCurrent()),
00058               m_pObject(pObject)
00059         {
00060         }
00061 
00062         FreeReference(T * pObject)
00063             : m_env(cssuno::Environment::getCurrent()),
00064               m_pObject(pObject)
00065         {
00066             if (m_pObject)
00067                 m_env.get()->pExtEnv->acquireInterface(m_env.get()->pExtEnv, m_pObject);
00068         }
00069 
00070         explicit FreeReference(cssuno::Reference<T> const & xRef)
00071             : m_env(cssuno::Environment::getCurrent()),
00072               m_pObject(xRef.get())
00073         {
00074             if (m_pObject)
00075                 m_env.get()->pExtEnv->acquireInterface(m_env.get()->pExtEnv, m_pObject);
00076         }
00077 
00078         FreeReference(FreeReference<T> const & rOther)
00079             : m_env    (rOther.m_env),
00080               m_pObject(rOther.m_pObject)
00081         {
00082             if (m_pObject)
00083                 m_env.get()->pExtEnv->acquireInterface(m_env.get()->pExtEnv, m_pObject);
00084         }
00085 
00086 
00087         ~FreeReference()
00088         {
00089             clear();
00090         }
00091 
00092         cssuno::Environment getEnv() const throw (cssuno::RuntimeException)
00093         {
00094             return m_env;
00095         }
00096 
00097         cssuno::Reference<T> get() const throw (cssuno::RuntimeException)
00098         {
00099             return cssuno::Reference<T>(cppu::mapIn(m_pObject, m_env), SAL_NO_ACQUIRE);
00100         }
00101 
00102         operator cssuno::Reference<T> () const throw (cssuno::RuntimeException)
00103         {
00104             return get();
00105         }
00106 
00107         cssuno::Reference<T> operator -> () const throw (cssuno::RuntimeException)
00108         {
00109             return get();
00110         }
00111 
00112         bool is() const throw (cssuno::RuntimeException)
00113         {
00114             return m_pObject != NULL;
00115         }
00116 
00117         void clear()
00118         {
00119             if (m_pObject)
00120             {
00121 
00122                 m_env.get()->pExtEnv->releaseInterface(m_env.get()->pExtEnv, m_pObject);
00123                 m_pObject = NULL;
00124                 m_env.clear();
00125             }
00126         }
00127 
00128         FreeReference<T> & operator = (FreeReference<T> const & rOther)
00129         {
00130             clear();
00131 
00132             m_pObject = rOther.m_pObject;
00133             if (m_pObject)
00134             {
00135                 m_env     = rOther.m_env;
00136                 m_env.get()->pExtEnv->acquireInterface(m_env.get()->pExtEnv, m_pObject);
00137             }
00138 
00139             return *this;
00140         }
00141 
00142         void set(cssuno::Reference<T> const & xRef)
00143         {
00144             clear();
00145 
00146             m_pObject = xRef.get();
00147             if (m_pObject)
00148             {
00149                 m_env = cssuno::Environment::getCurrent();
00150 
00151                 m_env.get()->pExtEnv->acquireInterface(m_env.get()->pExtEnv, m_pObject);
00152             }
00153         }
00154 
00155         bool operator == (FreeReference const & rOther) const
00156         {
00157             return get() == rOther.get();
00158         }
00159 
00160         bool operator != (FreeReference const & rOther) const
00161         {
00162             return !operator==(rOther);
00163         }
00164     };
00165 }
00166 
00167 #endif
00168 
00169 /* vim:set shiftwidth=4 softtabstop=4 expandtab: */
 All Classes Namespaces Files Functions Variables Typedefs Enumerations Enumerator Friends Defines