include/tools/weakbase.hxx

   1 /* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*- */
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  19
  20 #ifndef INCLUDED_TOOLS_WEAKBASE_HXX
  21 #define INCLUDED_TOOLS_WEAKBASE_HXX
  22
  23 #include <tools/weakbase.h>
  24
  25 /// see weakbase.h for documentation
  26
  27 namespace tools
  28 {
  29
  30 template< class reference_type >
  31 inline WeakReference< reference_type >::WeakReference()
  32 {
  33     mpWeakConnection = new WeakConnection<reference_type>( 0 );
  34     mpWeakConnection->acquire();
  35 }
  36
  37 template< class reference_type >
  38 inline WeakReference< reference_type >::WeakReference( reference_type* pReference )
  39 {
  40     if( pReference )
  41         mpWeakConnection = pReference->getWeakConnection();
  42     else
  43         mpWeakConnection = new WeakConnection<reference_type>( 0 );
  44
  45     mpWeakConnection->acquire();
  46 }
  47
  48 template< class reference_type >
  49 inline WeakReference< reference_type >::WeakReference( const WeakReference< reference_type >& rWeakRef )
  50 {
  51     mpWeakConnection = rWeakRef.mpWeakConnection;
  52     mpWeakConnection->acquire();
  53 }
  54
  55 template< class reference_type >
  56 inline WeakReference< reference_type >::~WeakReference()
  57 {
  58     mpWeakConnection->release();
  59 }
  60
  61 template< class reference_type >
  62 inline bool WeakReference< reference_type >::is() const
  63 {
  64     return mpWeakConnection->mpReference != 0;
  65 }
  66
  67 template< class reference_type >
  68 inline reference_type * WeakReference< reference_type >::get() const
  69 {
  70     return mpWeakConnection->mpReference;
  71 }
  72
  73 template< class reference_type >
  74 inline void WeakReference< reference_type >::reset( reference_type* pReference )
  75 {
  76     mpWeakConnection->release();
  77
  78     if( pReference )
  79         mpWeakConnection = pReference->getWeakConnection();
  80     else
  81         mpWeakConnection = new WeakConnection<reference_type>( 0 );
  82
  83     mpWeakConnection->acquire();
  84 }
  85
  86 template< class reference_type >
  87 inline reference_type * WeakReference< reference_type >::operator->() const
  88 {
  89     OSL_PRECOND(mpWeakConnection, "tools::WeakReference::operator->() : null body");
  90     return mpWeakConnection->mpReference;
  91 }
  92
  93 template< class reference_type >
  94 inline bool WeakReference< reference_type >::operator==(const reference_type * pReferenceObject) const
  95 {
  96     return mpWeakConnection->mpReference == pReferenceObject;
  97 }
  98
  99 template< class reference_type >
 100 inline bool WeakReference< reference_type >::operator==(const WeakReference<reference_type> & handle) const
 101 {
 102     return mpWeakConnection == handle.mpWeakConnection;
 103 }
 104
 105 template< class reference_type >
 106 inline bool WeakReference< reference_type >::operator!=(const WeakReference<reference_type> & handle) const
 107 {
 108     return mpWeakConnection != handle.mpWeakConnection;
 109 }
 110
 111 template< class reference_type >
 112 inline bool WeakReference< reference_type >::operator<(const WeakReference<reference_type> & handle) const
 113 {
 114     return mpWeakConnection->mpReference < handle.mpWeakConnection->mpReference;
 115 }
 116
 117 template< class reference_type >
 118 inline bool WeakReference< reference_type >::operator>(const WeakReference<reference_type> & handle) const
 119 {
 120     return mpWeakConnection->mpReference > handle.mpWeakConnection->mpReference;
 121 }
 122
 123 template< class reference_type >
 124 inline WeakReference<reference_type>& WeakReference<reference_type>::operator= (
 125     const WeakReference<reference_type>& rReference)
 126 {
 127     if (&rReference != this)
 128     {
 129         mpWeakConnection->release();
 130
 131         mpWeakConnection = rReference.mpWeakConnection;
 132         mpWeakConnection->acquire();
 133     }
 134     return *this;
 135 }
 136
 137 template< class reference_type >
 138 inline WeakBase< reference_type >::WeakBase()
 139 {
 140     mpWeakConnection = 0;
 141 }
 142
 143 template< class reference_type >
 144 inline WeakBase< reference_type >::~WeakBase()
 145 {
 146     if( mpWeakConnection )
 147     {
 148         mpWeakConnection->mpReference = 0;
 149         mpWeakConnection->release();
 150         mpWeakConnection = 0;
 151     }
 152 }
 153
 154 template< class reference_type >
 155 inline void WeakBase< reference_type >::clearWeak()
 156 {
 157     if( mpWeakConnection )
 158         mpWeakConnection->mpReference = 0;
 159 }
 160
 161 template< class reference_type >
 162 inline WeakConnection< reference_type >* WeakBase< reference_type >::getWeakConnection()
 163 {
 164     if( !mpWeakConnection )
 165     {
 166         mpWeakConnection = new WeakConnection< reference_type >( static_cast< reference_type* >( this ) );
 167         mpWeakConnection->acquire();
 168     }
 169     return mpWeakConnection;
 170 }
 171
 172 }
 173
 174 #endif
 175
 176 /* vim:set shiftwidth=4 softtabstop=4 expandtab: */