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LibreOffice 5.1 SDK C/C++ API Reference
weakref.hxx
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19 #ifndef INCLUDED_CPPUHELPER_WEAKREF_HXX
20 #define INCLUDED_CPPUHELPER_WEAKREF_HXX
21 
22 #include <sal/config.h>
23 
24 #include <cstddef>
25 
27 #include <com/sun/star/uno/XInterface.hpp>
29 
30 
31 namespace com
32 {
33 namespace sun
34 {
35 namespace star
36 {
37 namespace uno
38 {
39 
40 class OWeakRefListener;
41 
52 {
53 public:
57  : m_pImpl( NULL )
58  {}
59 
64  WeakReferenceHelper( const WeakReferenceHelper & rWeakRef );
70  WeakReferenceHelper( const css::uno::Reference< css::uno::XInterface > & xInt );
74 
79  WeakReferenceHelper & SAL_CALL operator = ( const WeakReferenceHelper & rWeakRef );
80 
87  WeakReferenceHelper & SAL_CALL operator = (
88  const css::uno::Reference< css::uno::XInterface > & xInt );
89 
95  inline bool SAL_CALL operator == ( const WeakReferenceHelper & rObj ) const
96  { return (get() == rObj.get()); }
97 
102  css::uno::Reference< css::uno::XInterface > SAL_CALL get() const;
107  inline SAL_CALL operator Reference< XInterface > () const
108  { return get(); }
109 
114  void SAL_CALL clear();
115 
116 protected:
118  OWeakRefListener * m_pImpl;
120 };
121 
133 template< class interface_type >
135 {
136 public:
139  inline WeakReference()
141  {}
142 
148  : WeakReferenceHelper( rRef )
149  {}
150 
159  WeakReference & SAL_CALL operator = (
160  const css::uno::Reference< interface_type > & xInt )
161  { WeakReferenceHelper::operator=(xInt); return *this; }
162 
167  inline SAL_CALL operator Reference< interface_type > () const
168  { return Reference< interface_type >::query( get() ); }
169 };
170 
171 }
172 }
173 }
174 }
175 
176 #endif
177 
178 /* vim:set shiftwidth=4 softtabstop=4 expandtab: */
bool operator==(const Any &rAny, const C &value)
Template equality operator: compares set value of left side any to right side value.
Definition: Any.hxx:573
WeakReferenceHelper()
Default ctor.
Definition: weakref.hxx:56
#define SAL_WARN_UNUSED
Annotate classes where a compiler should warn if an instance is unused.
Definition: types.h:612
WeakReference(const Reference< interface_type > &rRef)
Copy ctor.
Definition: weakref.hxx:147
Definition: types.h:389
The WeakReferenceHelper holds a weak reference to an object.
Definition: weakref.hxx:51
static SAL_WARN_UNUSED_RESULT Reference< interface_type > query(const BaseReference &rRef)
Queries given interface reference for type interface_type.
Definition: Reference.hxx:346
css::uno::Reference< css::uno::XInterface > get() const
Gets a hard reference to the object.
#define CPPUHELPER_DLLPUBLIC
Definition: cppuhelperdllapi.h:28
WeakReference()
Default ctor.
Definition: weakref.hxx:139
Template reference class for interface type derived from BaseReference.
Definition: unotype.hxx:39
WeakReferenceHelper & operator=(const WeakReferenceHelper &rWeakRef)
Releases this reference and takes over rWeakRef.
The WeakReference<> holds a weak reference to an object.
Definition: weakref.hxx:134