broadcast.hxx

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#ifndef INCLUDED_SVL_BROADCAST_HXX
#define INCLUDED_SVL_BROADCAST_HXX
 
#include <svl/svldllapi.h>
 
#include <vector>
 
class SvtListener;
class SfxHint;
 
class SVL_DLLPUBLIC SvtBroadcaster
{
public:
    friend class SvtListener;
 
    typedef std::vector<SvtListener*> ListenersType;
 
private:
    const SvtBroadcaster&   operator=(const SvtBroadcaster &) = delete;
 
    void Normalize() const;
 
    void Add( SvtListener* p );
    void Remove( SvtListener* p );
 
protected:
    virtual void            ListenersGone();
 
public:
                            SvtBroadcaster()
                                : mnEmptySlots(0), mnListenersFirstUnsorted(0), mbAboutToDie(false)
                                , mbDisposing(false), mbDestNormalized(true) {}
                            SvtBroadcaster( const SvtBroadcaster &rBC );
    virtual                 ~SvtBroadcaster();
 
    void                    Broadcast( const SfxHint &rHint );
 
    ListenersType& GetAllListeners();
    const ListenersType& GetAllListeners() const;
 
    bool HasListeners() const { return (maListeners.size() - mnEmptySlots) > 0; }
 
    void PrepareForDestruction();
 
private:
    mutable ListenersType maListeners;
 
    mutable ListenersType maDestructedListeners;
 
    mutable sal_Int32 mnEmptySlots;
    // The first item in maListeners that is not sorted. The container can become large, so this optimizes sorting.
    mutable sal_Int32 mnListenersFirstUnsorted;
    bool mbAboutToDie:1;
    bool mbDisposing:1;
    // Whether maDestructedListeners is sorted or not.
    mutable bool mbDestNormalized:1;
};
 
 
#endif
 
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