1 /************************************************************** 2 * 3 * Licensed to the Apache Software Foundation (ASF) under one 4 * or more contributor license agreements. See the NOTICE file 5 * distributed with this work for additional information 6 * regarding copyright ownership. The ASF licenses this file 7 * to you under the Apache License, Version 2.0 (the 8 * "License"); you may not use this file except in compliance 9 * with the License. You may obtain a copy of the License at 10 * 11 * http://www.apache.org/licenses/LICENSE-2.0 12 * 13 * Unless required by applicable law or agreed to in writing, 14 * software distributed under the License is distributed on an 15 * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY 16 * KIND, either express or implied. See the License for the 17 * specific language governing permissions and limitations 18 * under the License. 19 * 20 *************************************************************/ 21 22 23 24 // MARKER(update_precomp.py): autogen include statement, do not remove 25 #include "precompiled_comphelper.hxx" 26 #include <comphelper/propmultiplex.hxx> 27 #include <osl/diagnose.h> 28 29 //......................................................................... 30 namespace comphelper 31 { 32 //......................................................................... 33 34 using namespace ::com::sun::star::uno; 35 using namespace ::com::sun::star::lang; 36 using namespace ::com::sun::star::beans; 37 38 //======================================================================== 39 //= OPropertyChangeListener 40 //======================================================================== 41 //------------------------------------------------------------------------ 42 OPropertyChangeListener::~OPropertyChangeListener() 43 { 44 if (m_pAdapter) 45 m_pAdapter->dispose(); 46 } 47 48 //------------------------------------------------------------------ 49 void OPropertyChangeListener::_disposing(const EventObject&) throw( RuntimeException) 50 { 51 // nothing to do here 52 } 53 54 //------------------------------------------------------------------ 55 void OPropertyChangeListener::disposeAdapter() 56 { 57 if ( m_pAdapter ) 58 m_pAdapter->dispose(); 59 60 // will automatically set a new adapter 61 OSL_ENSURE( !m_pAdapter, "OPropertyChangeListener::disposeAdapter: what did dispose do?" ); 62 } 63 64 //------------------------------------------------------------------ 65 void OPropertyChangeListener::setAdapter(OPropertyChangeMultiplexer* pAdapter) 66 { 67 if (m_pAdapter) 68 { 69 ::osl::MutexGuard aGuard(m_rMutex); 70 m_pAdapter->release(); 71 m_pAdapter = NULL; 72 } 73 74 if (pAdapter) 75 { 76 ::osl::MutexGuard aGuard(m_rMutex); 77 m_pAdapter = pAdapter; 78 m_pAdapter->acquire(); 79 } 80 } 81 82 //======================================================================== 83 //= OPropertyChangeMultiplexer 84 //======================================================================== 85 //------------------------------------------------------------------ 86 OPropertyChangeMultiplexer::OPropertyChangeMultiplexer(OPropertyChangeListener* _pListener, const Reference< XPropertySet>& _rxSet, sal_Bool _bAutoReleaseSet) 87 :m_xSet(_rxSet) 88 ,m_pListener(_pListener) 89 ,m_nLockCount(0) 90 ,m_bListening(sal_False) 91 ,m_bAutoSetRelease(_bAutoReleaseSet) 92 { 93 m_pListener->setAdapter(this); 94 } 95 96 //------------------------------------------------------------------ 97 OPropertyChangeMultiplexer::~OPropertyChangeMultiplexer() 98 { 99 } 100 101 //------------------------------------------------------------------ 102 void OPropertyChangeMultiplexer::lock() 103 { 104 ++m_nLockCount; 105 } 106 107 //------------------------------------------------------------------ 108 void OPropertyChangeMultiplexer::unlock() 109 { 110 --m_nLockCount; 111 } 112 113 //------------------------------------------------------------------ 114 void OPropertyChangeMultiplexer::dispose() 115 { 116 if (m_bListening) 117 { 118 Reference< XPropertyChangeListener> xPreventDelete(this); 119 120 const ::rtl::OUString* pProperties = m_aProperties.getConstArray(); 121 for (sal_Int32 i = 0; i < m_aProperties.getLength(); ++i, ++pProperties) 122 m_xSet->removePropertyChangeListener(*pProperties, static_cast< XPropertyChangeListener*>(this)); 123 124 m_pListener->setAdapter(NULL); 125 126 m_pListener = NULL; 127 m_bListening = sal_False; 128 129 if (m_bAutoSetRelease) 130 m_xSet = NULL; 131 } 132 } 133 134 // XEventListener 135 //------------------------------------------------------------------ 136 void SAL_CALL OPropertyChangeMultiplexer::disposing( const EventObject& _rSource) throw( RuntimeException) 137 { 138 if (m_pListener) 139 { 140 // tell the listener 141 if (!locked()) 142 m_pListener->_disposing(_rSource); 143 // disconnect the listener 144 if (m_pListener) // may have been reset whilest calling into _disposing 145 m_pListener->setAdapter(NULL); 146 } 147 148 m_pListener = NULL; 149 m_bListening = sal_False; 150 151 if (m_bAutoSetRelease) 152 m_xSet = NULL; 153 } 154 155 // XPropertyChangeListener 156 //------------------------------------------------------------------ 157 void SAL_CALL OPropertyChangeMultiplexer::propertyChange( const PropertyChangeEvent& _rEvent ) throw( RuntimeException) 158 { 159 if (m_pListener && !locked()) 160 m_pListener->_propertyChanged(_rEvent); 161 } 162 163 //------------------------------------------------------------------ 164 void OPropertyChangeMultiplexer::addProperty(const ::rtl::OUString& _sPropertyName) 165 { 166 if (m_xSet.is()) 167 { 168 m_xSet->addPropertyChangeListener(_sPropertyName, static_cast< XPropertyChangeListener*>(this)); 169 m_aProperties.realloc(m_aProperties.getLength() + 1); 170 m_aProperties.getArray()[m_aProperties.getLength()-1] = _sPropertyName; 171 m_bListening = sal_True; 172 } 173 } 174 175 //......................................................................... 176 } 177 //......................................................................... 178 179