SelectionMultiplex.hxx

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#ifndef INCLUDED_COMPHELPER_SELECTIONMULTIPLEX_HXX
#define INCLUDED_COMPHELPER_SELECTIONMULTIPLEX_HXX

#include <com/sun/star/view/XSelectionChangeListener.hpp>
#include <com/sun/star/lang/EventObject.hpp>
#include <cppuhelper/implbase.hxx>
#include <comphelper/comphelperdllapi.h>

namespace com::sun::star::view { class XSelectionSupplier; }

//= selection helper classes


namespace comphelper
{


    //= OSelectionChangeListener

    class COMPHELPER_DLLPUBLIC OSelectionChangeListener
    {
        friend class OSelectionChangeMultiplexer;

    public:
        OSelectionChangeListener() {}
        virtual ~OSelectionChangeListener();

        virtual void _selectionChanged( const css::lang::EventObject& aEvent ) = 0;
        virtual void _disposing(const css::lang::EventObject& _rSource);
    };


    //= OSelectionChangeMultiplexer

    class COMPHELPER_DLLPUBLIC OSelectionChangeMultiplexer  :public cppu::WeakImplHelper< css::view::XSelectionChangeListener>
    {
        friend class OSelectionChangeListener;
        css::uno::Reference< css::view::XSelectionSupplier>  m_xSet;
        OSelectionChangeListener*                            m_pListener;
        sal_Int32                                            m_nLockCount;

        OSelectionChangeMultiplexer(const OSelectionChangeMultiplexer&) = delete;
        OSelectionChangeMultiplexer& operator=(const OSelectionChangeMultiplexer&) = delete;
    protected:
        virtual ~OSelectionChangeMultiplexer() override;
    public:
        OSelectionChangeMultiplexer(OSelectionChangeListener* _pListener, const  css::uno::Reference< css::view::XSelectionSupplier>& _rxSet);

    // XEventListener
        virtual void SAL_CALL disposing( const  css::lang::EventObject& Source ) override;

    // XSelectionChangeListener
        virtual void SAL_CALL selectionChanged( const css::lang::EventObject& aEvent ) override;

        void        lock();
        void        unlock();
        sal_Int32   locked() const { return m_nLockCount; }
    };


}   // namespace comphelper


#endif // INCLUDED_COMPHELPER_SELECTIONMULTIPLEX_HXX

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