comphelper/source/property/propmultiplex.cxx

   1 /*************************************************************************
   2  *
   3  * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
   4  *
   5  * Copyright 2000, 2010 Oracle and/or its affiliates.
   6  *
   7  * OpenOffice.org - a multi-platform office productivity suite
   8  *
   9  * This file is part of OpenOffice.org.
  10  *
  11  * OpenOffice.org is free software: you can redistribute it and/or modify
  12  * it under the terms of the GNU Lesser General Public License version 3
  13  * only, as published by the Free Software Foundation.
  14  *
  15  * OpenOffice.org is distributed in the hope that it will be useful,
  16  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  17  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  18  * GNU Lesser General Public License version 3 for more details
  19  * (a copy is included in the LICENSE file that accompanied this code).
  20  *
  21  * You should have received a copy of the GNU Lesser General Public License
  22  * version 3 along with OpenOffice.org.  If not, see
  23  * <http://www.openoffice.org/license.html>
  24  * for a copy of the LGPLv3 License.
  25  *
  26  ************************************************************************/
  27
  28 // MARKER(update_precomp.py): autogen include statement, do not remove
  29 #include "precompiled_comphelper.hxx"
  30 #include <comphelper/propmultiplex.hxx>
  31 #include <osl/diagnose.h>
  32
  33 //.........................................................................
  34 namespace comphelper
  35 {
  36 //.........................................................................
  37
  38 using namespace ::com::sun::star::uno;
  39 using namespace ::com::sun::star::lang;
  40 using namespace ::com::sun::star::beans;
  41
  42 //========================================================================
  43 //= OPropertyChangeListener
  44 //========================================================================
  45 //------------------------------------------------------------------------
  46 OPropertyChangeListener::~OPropertyChangeListener()
  47 {
  48     if (m_pAdapter)
  49         m_pAdapter->dispose();
  50 }
  51
  52 //------------------------------------------------------------------
  53 void OPropertyChangeListener::_disposing(const EventObject&) throw( RuntimeException)
  54 {
  55     // nothing to do here
  56 }
  57
  58 //------------------------------------------------------------------
  59 void OPropertyChangeListener::disposeAdapter()
  60 {
  61     if ( m_pAdapter )
  62         m_pAdapter->dispose();
  63
  64     // will automatically set a new adapter
  65     OSL_ENSURE( !m_pAdapter, "OPropertyChangeListener::disposeAdapter: what did dispose do?" );
  66 }
  67
  68 //------------------------------------------------------------------
  69 void OPropertyChangeListener::setAdapter(OPropertyChangeMultiplexer* pAdapter)
  70 {
  71     if (m_pAdapter)
  72     {
  73         ::osl::MutexGuard aGuard(m_rMutex);
  74         m_pAdapter->release();
  75         m_pAdapter = NULL;
  76     }
  77
  78     if (pAdapter)
  79     {
  80         ::osl::MutexGuard aGuard(m_rMutex);
  81         m_pAdapter = pAdapter;
  82         m_pAdapter->acquire();
  83     }
  84 }
  85
  86 //========================================================================
  87 //= OPropertyChangeMultiplexer
  88 //========================================================================
  89 //------------------------------------------------------------------
  90 OPropertyChangeMultiplexer::OPropertyChangeMultiplexer(OPropertyChangeListener* _pListener, const  Reference< XPropertySet>& _rxSet, sal_Bool _bAutoReleaseSet)
  91             :m_xSet(_rxSet)
  92             ,m_pListener(_pListener)
  93             ,m_nLockCount(0)
  94             ,m_bListening(sal_False)
  95             ,m_bAutoSetRelease(_bAutoReleaseSet)
  96 {
  97     m_pListener->setAdapter(this);
  98 }
  99
 100 //------------------------------------------------------------------
 101 OPropertyChangeMultiplexer::~OPropertyChangeMultiplexer()
 102 {
 103 }
 104
 105 //------------------------------------------------------------------
 106 void OPropertyChangeMultiplexer::lock()
 107 {
 108     ++m_nLockCount;
 109 }
 110
 111 //------------------------------------------------------------------
 112 void OPropertyChangeMultiplexer::unlock()
 113 {
 114     --m_nLockCount;
 115 }
 116
 117 //------------------------------------------------------------------
 118 void OPropertyChangeMultiplexer::dispose()
 119 {
 120     if (m_bListening)
 121     {
 122         Reference< XPropertyChangeListener> xPreventDelete(this);
 123
 124         const ::rtl::OUString* pProperties = m_aProperties.getConstArray();
 125         for (sal_Int32 i = 0; i < m_aProperties.getLength(); ++i, ++pProperties)
 126             m_xSet->removePropertyChangeListener(*pProperties, static_cast< XPropertyChangeListener*>(this));
 127
 128         m_pListener->setAdapter(NULL);
 129
 130         m_pListener = NULL;
 131         m_bListening = sal_False;
 132
 133         if (m_bAutoSetRelease)
 134             m_xSet = NULL;
 135     }
 136 }
 137
 138 // XEventListener
 139 //------------------------------------------------------------------
 140 void SAL_CALL OPropertyChangeMultiplexer::disposing( const  EventObject& _rSource) throw( RuntimeException)
 141 {
 142     if (m_pListener)
 143     {
 144          // tell the listener
 145         if (!locked())
 146             m_pListener->_disposing(_rSource);
 147         // disconnect the listener
 148         if (m_pListener)    // may have been reset whilest calling into _disposing
 149             m_pListener->setAdapter(NULL);
 150     }
 151
 152     m_pListener = NULL;
 153     m_bListening = sal_False;
 154
 155     if (m_bAutoSetRelease)
 156         m_xSet = NULL;
 157 }
 158
 159 // XPropertyChangeListener
 160 //------------------------------------------------------------------
 161 void SAL_CALL OPropertyChangeMultiplexer::propertyChange( const  PropertyChangeEvent& _rEvent ) throw( RuntimeException)
 162 {
 163     if (m_pListener && !locked())
 164         m_pListener->_propertyChanged(_rEvent);
 165 }
 166
 167 //------------------------------------------------------------------
 168 void OPropertyChangeMultiplexer::addProperty(const ::rtl::OUString& _sPropertyName)
 169 {
 170     if (m_xSet.is())
 171     {
 172         m_xSet->addPropertyChangeListener(_sPropertyName, static_cast< XPropertyChangeListener*>(this));
 173         m_aProperties.realloc(m_aProperties.getLength() + 1);
 174         m_aProperties.getArray()[m_aProperties.getLength()-1] = _sPropertyName;
 175         m_bListening = sal_True;
 176     }
 177 }
 178
 179 //.........................................................................
 180 }
 181 //.........................................................................
 182