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
  28
  29 //= selection helper classes
  30
  31
  32 namespace comphelper
  33 {
  34
  35
  36     class OSelectionChangeMultiplexer;
  37
  38
  39     //= OSelectionChangeListener
  40
  41     /// simple listener adapter for selections
  42     class COMPHELPER_DLLPUBLIC OSelectionChangeListener
  43     {
  44         friend class OSelectionChangeMultiplexer;
  45
  46         OSelectionChangeMultiplexer*    m_pAdapter;
  47         ::osl::Mutex&                   m_rMutex;
  48
  49     public:
  50         OSelectionChangeListener(::osl::Mutex& _rMutex)
  51             : m_pAdapter(nullptr), m_rMutex(_rMutex) { }
  52         virtual ~OSelectionChangeListener();
  53
  54         virtual void _selectionChanged( const css::lang::EventObject& aEvent ) throw (css::uno::RuntimeException) = 0;
  55         virtual void _disposing(const css::lang::EventObject& _rSource)
  56             throw (css::uno::RuntimeException, std::exception);
  57
  58     protected:
  59         // pseudo-private. Making it private now could break compatibility
  60         void    setAdapter( OSelectionChangeMultiplexer* _pAdapter );
  61     };
  62
  63
  64     //= OSelectionChangeMultiplexer
  65
  66     /// multiplexer for selection changes
  67     class COMPHELPER_DLLPUBLIC OSelectionChangeMultiplexer  :public cppu::WeakImplHelper< css::view::XSelectionChangeListener>
  68     {
  69         friend class OSelectionChangeListener;
  70         css::uno::Reference< css::view::XSelectionSupplier>  m_xSet;
  71         OSelectionChangeListener*                            m_pListener;
  72         sal_Int32                                            m_nLockCount;
  73
  74         OSelectionChangeMultiplexer(const OSelectionChangeMultiplexer&) = delete;
  75         OSelectionChangeMultiplexer& operator=(const OSelectionChangeMultiplexer&) = delete;
  76     protected:
  77         virtual ~OSelectionChangeMultiplexer() override;
  78     public:
  79         OSelectionChangeMultiplexer(OSelectionChangeListener* _pListener, const  css::uno::Reference< css::view::XSelectionSupplier>& _rxSet);
  80
  81     // XEventListener
  82         virtual void SAL_CALL disposing( const  css::lang::EventObject& Source ) throw( css::uno::RuntimeException, std::exception) override;
  83
  84     // XSelectionChangeListener
  85         virtual void SAL_CALL selectionChanged( const css::lang::EventObject& aEvent ) throw (css::uno::RuntimeException, std::exception) override;
  86
  87         /// incremental lock
  88         void        lock();
  89         /// incremental unlock
  90         void        unlock();
  91         /// get the lock count
  92         sal_Int32   locked() const { return m_nLockCount; }
  93     };
  94
  95
  96 }   // namespace comphelper
  97
  98
  99 #endif // INCLUDED_COMPHELPER_SELECTIONMULTIPLEX_HXX
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