include/comphelper/SelectionMultiplex.hxx

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  17  *   the License at http://www.apache.org/licenses/LICENSE-2.0 .
  18  */
  19
  20 #ifndef INCLUDED_COMPHELPER_SELECTIONMULTIPLEX_HXX
  21 #define INCLUDED_COMPHELPER_SELECTIONMULTIPLEX_HXX
  22
  23 #include <com/sun/star/view/XSelectionChangeListener.hpp>
  24 #include <com/sun/star/view/XSelectionSupplier.hpp>
  25 #include <cppuhelper/implbase.hxx>
  26 #include <comphelper/comphelperdllapi.h>
  27 #include <rtl/ref.hxx>
  28
  29
  30 //= selection helper classes
  31
  32
  33 namespace comphelper
  34 {
  35
  36
  37     class OSelectionChangeMultiplexer;
  38
  39
  40     //= OSelectionChangeListener
  41
  42     /// simple listener adapter for selections
  43     class COMPHELPER_DLLPUBLIC OSelectionChangeListener
  44     {
  45         friend class OSelectionChangeMultiplexer;
  46
  47         rtl::Reference<OSelectionChangeMultiplexer>  m_xAdapter;
  48         ::osl::Mutex&                                m_rMutex;
  49
  50     public:
  51         OSelectionChangeListener(::osl::Mutex& _rMutex)
  52             : m_rMutex(_rMutex) { }
  53         virtual ~OSelectionChangeListener();
  54
  55         /// @throws css::uno::RuntimeException
  56         virtual void _selectionChanged( const css::lang::EventObject& aEvent ) = 0;
  57         /// @throws css::uno::RuntimeException
  58         virtual void _disposing(const css::lang::EventObject& _rSource);
  59
  60     protected:
  61         // pseudo-private. Making it private now could break compatibility
  62         void    setAdapter( OSelectionChangeMultiplexer* _pAdapter );
  63     };
  64
  65
  66     //= OSelectionChangeMultiplexer
  67
  68     /// multiplexer for selection changes
  69     class COMPHELPER_DLLPUBLIC OSelectionChangeMultiplexer  :public cppu::WeakImplHelper< css::view::XSelectionChangeListener>
  70     {
  71         friend class OSelectionChangeListener;
  72         css::uno::Reference< css::view::XSelectionSupplier>  m_xSet;
  73         OSelectionChangeListener*                            m_pListener;
  74         sal_Int32                                            m_nLockCount;
  75
  76         OSelectionChangeMultiplexer(const OSelectionChangeMultiplexer&) = delete;
  77         OSelectionChangeMultiplexer& operator=(const OSelectionChangeMultiplexer&) = delete;
  78     protected:
  79         virtual ~OSelectionChangeMultiplexer() override;
  80     public:
  81         OSelectionChangeMultiplexer(OSelectionChangeListener* _pListener, const  css::uno::Reference< css::view::XSelectionSupplier>& _rxSet);
  82
  83     // XEventListener
  84         virtual void SAL_CALL disposing( const  css::lang::EventObject& Source ) override;
  85
  86     // XSelectionChangeListener
  87         virtual void SAL_CALL selectionChanged( const css::lang::EventObject& aEvent ) override;
  88
  89         /// incremental lock
  90         void        lock();
  91         /// incremental unlock
  92         void        unlock();
  93         /// get the lock count
  94         sal_Int32   locked() const { return m_nLockCount; }
  95     };
  96
  97
  98 }   // namespace comphelper
  99
 100
 101 #endif // INCLUDED_COMPHELPER_SELECTIONMULTIPLEX_HXX
 102
 103 /* vim:set shiftwidth=4 softtabstop=4 expandtab: */