include/svl/listeneriter.hxx

   1 /* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*- */
   2 /*
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   5  * This Source Code Form is subject to the terms of the Mozilla Public
   6  * License, v. 2.0. If a copy of the MPL was not distributed with this
   7  * file, You can obtain one at http://mozilla.org/MPL/2.0/.
   8  *
   9  * This file incorporates work covered by the following license notice:
  10  *
  11  *   Licensed to the Apache Software Foundation (ASF) under one or more
  12  *   contributor license agreements. See the NOTICE file distributed
  13  *   with this work for additional information regarding copyright
  14  *   ownership. The ASF licenses this file to you under the Apache
  15  *   License, Version 2.0 (the "License"); you may not use this file
  16  *   except in compliance with the License. You may obtain a copy of
  17  *   the License at http://www.apache.org/licenses/LICENSE-2.0 .
  18  */
  19 #ifndef _SVT_LISTENERITER_HXX
  20 #define _SVT_LISTENERITER_HXX
  21
  22 #include "svl/svldllapi.h"
  23 #include <tools/rtti.hxx>
  24
  25 class SvtListener;
  26 class SvtListenerBase;
  27 class SvtBroadcaster;
  28
  29 //-------------------------------------------------------------------------
  30
  31 class SVL_DLLPUBLIC SvtListenerIter
  32 {
  33     friend class SvtListenerBase;
  34
  35     SvtBroadcaster& rRoot;
  36     SvtListenerBase *pAkt, *pDelNext;
  37
  38     // for the update of all iterator's, if a listener is added or removed
  39     // at the same time.
  40     static SvtListenerIter *pListenerIters;
  41     SvtListenerIter *pNxtIter;
  42
  43     SVL_DLLPRIVATE static void RemoveListener( SvtListenerBase& rDel,
  44                                                SvtListenerBase* pNext );
  45
  46 public:
  47     SvtListenerIter( SvtBroadcaster& );
  48     ~SvtListenerIter();
  49
  50     const SvtBroadcaster& GetBroadcaster() const    { return rRoot; }
  51           SvtBroadcaster& GetBroadcaster()          { return rRoot; }
  52
  53     SvtListener* GoNext();          // to the next
  54
  55     SvtListener* GoStart();         // to the start of the list
  56
  57     SvtListener* GetCurr() const;   // returns the current
  58
  59     int IsChanged() const       { return pDelNext != pAkt; }
  60 };
  61
  62
  63 #endif
  64
  65 /* vim:set shiftwidth=4 softtabstop=4 expandtab: */