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/*************************************************************************
 *
 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
 *
 * Copyright 2008 by Sun Microsystems, Inc.
 *
 * OpenOffice.org - a multi-platform office productivity suite
 *
 * $RCSfile: listeneriter.hxx,v $
 * $Revision: 1.4 $
 *
 * This file is part of OpenOffice.org.
 *
 * OpenOffice.org is free software: you can redistribute it and/or modify
 * it under the terms of the GNU Lesser General Public License version 3
 * only, as published by the Free Software Foundation.
 *
 * OpenOffice.org is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 * GNU Lesser General Public License version 3 for more details
 * (a copy is included in the LICENSE file that accompanied this code).
 *
 * You should have received a copy of the GNU Lesser General Public License
 * version 3 along with OpenOffice.org.  If not, see
 * <http://www.openoffice.org/license.html>
 * for a copy of the LGPLv3 License.
 *
 ************************************************************************/
#ifndef _SVT_LISTENERITER_HXX
#define _SVT_LISTENERITER_HXX

#include "svtools/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