LibreOffice Module comphelper (master)  1
propmultiplex.cxx
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19 
20 #include <com/sun/star/beans/XPropertySet.hpp>
22 #include <osl/diagnose.h>
23 
24 
25 namespace comphelper
26 {
27 
28 
29 using namespace ::com::sun::star::uno;
30 using namespace ::com::sun::star::lang;
31 using namespace ::com::sun::star::beans;
32 
34 {
35  if (m_xAdapter.is())
36  m_xAdapter->dispose();
37 }
38 
39 
40 void OPropertyChangeListener::_disposing(const EventObject&)
41 {
42  // nothing to do here
43 }
44 
45 
47 {
48  if ( m_xAdapter.is() )
49  m_xAdapter->dispose();
50 
51  // will automatically set a new adapter
52  OSL_ENSURE( !m_xAdapter.is(), "OPropertyChangeListener::disposeAdapter: what did dispose do?" );
53 }
54 
55 
57 {
58  ::osl::MutexGuard aGuard(m_rMutex);
59  m_xAdapter = pAdapter;
60 }
61 
62 OPropertyChangeMultiplexer::OPropertyChangeMultiplexer(OPropertyChangeListener* _pListener, const Reference< XPropertySet>& _rxSet, bool _bAutoReleaseSet)
63  :m_xSet(_rxSet)
64  ,m_pListener(_pListener)
65  ,m_nLockCount(0)
66  ,m_bListening(false)
67  ,m_bAutoSetRelease(_bAutoReleaseSet)
68 {
69  m_pListener->setAdapter(this);
70 }
71 
72 
74 {
75 }
76 
77 
79 {
80  ++m_nLockCount;
81 }
82 
83 
85 {
86  --m_nLockCount;
87 }
88 
89 
91 {
92  if (!m_bListening)
93  return;
94 
95  Reference< XPropertyChangeListener> xPreventDelete(this);
96 
97  for (const OUString& rProp : m_aProperties)
98  m_xSet->removePropertyChangeListener(rProp, static_cast< XPropertyChangeListener*>(this));
99 
100  m_pListener->setAdapter(nullptr);
101 
102  m_pListener = nullptr;
103  m_bListening = false;
104 
105  if (m_bAutoSetRelease)
106  m_xSet = nullptr;
107 }
108 
109 // XEventListener
110 
111 void SAL_CALL OPropertyChangeMultiplexer::disposing( const EventObject& _rSource)
112 {
113  if (m_pListener)
114  {
115  // tell the listener
116  if (!locked())
117  m_pListener->_disposing(_rSource);
118  // disconnect the listener
119  if (m_pListener) // may have been reset whilst calling into _disposing
120  m_pListener->setAdapter(nullptr);
121  }
122 
123  m_pListener = nullptr;
124  m_bListening = false;
125 
126  if (m_bAutoSetRelease)
127  m_xSet = nullptr;
128 }
129 
130 // XPropertyChangeListener
131 
132 void SAL_CALL OPropertyChangeMultiplexer::propertyChange( const PropertyChangeEvent& _rEvent )
133 {
134  if (m_pListener && !locked())
135  m_pListener->_propertyChanged(_rEvent);
136 }
137 
138 
139 void OPropertyChangeMultiplexer::addProperty(const OUString& _sPropertyName)
140 {
141  if (m_xSet.is())
142  {
143  m_xSet->addPropertyChangeListener(_sPropertyName, static_cast< XPropertyChangeListener*>(this));
144  m_aProperties.push_back(_sPropertyName);
145  m_bListening = true;
146  }
147 }
148 
149 
150 }
151 
152 
153 /* vim:set shiftwidth=4 softtabstop=4 expandtab: */
void disposeAdapter()
If the derivee also owns the mutex which we know as reference, then call this within your derivee's d...
css::uno::Reference< css::beans::XPropertySet > m_xSet
virtual ~OPropertyChangeMultiplexer() override
rtl::Reference< OPropertyChangeMultiplexer > m_xAdapter
virtual void _propertyChanged(const css::beans::PropertyChangeEvent &_rEvent)=0
virtual void SAL_CALL propertyChange(const css::beans::PropertyChangeEvent &evt) override
simple listener adapter for property sets
multiplexer for property changes
std::vector< OUString > m_aProperties
void addProperty(const OUString &aPropertyName)
OPropertyChangeListener * m_pListener
void unlock()
incremental unlock
OPropertyChangeMultiplexer(OPropertyChangeListener *_pListener, const css::uno::Reference< css::beans::XPropertySet > &_rxSet, bool _bAutoReleaseSet=true)
virtual void _disposing(const css::lang::EventObject &_rSource)
sal_Int32 locked() const
get the lock count
virtual void SAL_CALL disposing(const css::lang::EventObject &Source) override
void setAdapter(OPropertyChangeMultiplexer *_pAdapter)