AOO410/main/svl/inc/svl/listeneriter.hxx

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#ifndef _SVT_LISTENERITER_HXX
#define _SVT_LISTENERITER_HXX

#include "svl/svldllapi.h"
#include <tools/rtti.hxx>

class SvtListener;
class SvtListenerBase;
class SvtBroadcaster;

//-------------------------------------------------------------------------

class SVL_DLLPUBLIC SvtListenerIter
{
	friend class SvtListenerBase;

	SvtBroadcaster& rRoot;
	SvtListenerBase *pAkt, *pDelNext;

	// for the update of all iterator's, if a listener is added or removed
	// at the same time.
	static SvtListenerIter *pListenerIters;
	SvtListenerIter *pNxtIter;
	TypeId aSrchId;				// fuer First/Next - suche diesen Type

	SVL_DLLPRIVATE static void RemoveListener( SvtListenerBase& rDel,
											   SvtListenerBase* pNext );

public:
	SvtListenerIter( SvtBroadcaster& );
	~SvtListenerIter();

	const SvtBroadcaster& GetBroadcaster() const	{ return rRoot; }
		  SvtBroadcaster& GetBroadcaster() 			{ return rRoot; }

	SvtListener* GoNext();			// to the next
	SvtListener* GoPrev();			// to the previous

	SvtListener* GoStart(); 		// to the start of the list
	SvtListener* GoEnd();			// to the end of the list

	SvtListener* GoRoot(); 			// to the root
	SvtListener* GetCurr() const;	// returns the current

	int IsChanged() const 		{ return pDelNext != pAkt; }

	SvtListener* First( TypeId nType );
	SvtListener* Next();
};


#endif