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1 : /* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*- */
2 : /*
3 : * This file is part of the LibreOffice project.
4 : *
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 :
20 : #include "listenerbase.hxx"
21 : #include <svl/listeneriter.hxx>
22 : #include <svl/broadcast.hxx>
23 : #include <svl/listener.hxx>
24 :
25 : SvtListenerIter* SvtListenerIter::pListenerIters = 0;
26 :
27 14946 : SvtListenerIter::SvtListenerIter( SvtBroadcaster& rBrdcst )
28 14946 : : rRoot( rBrdcst )
29 : {
30 : // hinten einketten!
31 14946 : pNxtIter = 0;
32 14946 : if( pListenerIters )
33 : {
34 0 : SvtListenerIter* pTmp = pListenerIters;
35 0 : while( pTmp->pNxtIter )
36 0 : pTmp = pTmp->pNxtIter;
37 0 : pTmp->pNxtIter = this;
38 : }
39 : else
40 14946 : pListenerIters = this;
41 :
42 14946 : pAkt = rRoot.pRoot;
43 14946 : pDelNext = pAkt;
44 14946 : }
45 :
46 :
47 :
48 14946 : SvtListenerIter::~SvtListenerIter()
49 : {
50 14946 : if( pListenerIters )
51 : {
52 14946 : if( pListenerIters == this )
53 14946 : pListenerIters = pNxtIter;
54 : else
55 : {
56 0 : SvtListenerIter* pTmp = pListenerIters;
57 0 : while( pTmp->pNxtIter != this )
58 0 : if( 0 == ( pTmp = pTmp->pNxtIter ) )
59 0 : return ;
60 0 : pTmp->pNxtIter = pNxtIter;
61 : }
62 : }
63 14946 : }
64 :
65 13924 : void SvtListenerIter::RemoveListener( SvtListenerBase& rDel,
66 : SvtListenerBase* pNext )
67 : {
68 : // Update the ListenerIter
69 13924 : SvtListenerIter* pTmp = pListenerIters;
70 33624 : while( pTmp )
71 : {
72 5776 : if( pTmp->pAkt == &rDel || pTmp->pDelNext == &rDel )
73 5776 : pTmp->pDelNext = pNext;
74 5776 : pTmp = pTmp->pNxtIter;
75 : }
76 13924 : }
77 :
78 8260 : SvtListener* SvtListenerIter::GoNext()
79 : {
80 8260 : if( pDelNext == pAkt )
81 : {
82 6644 : pAkt = pAkt->GetRight();
83 6644 : pDelNext = pAkt;
84 : }
85 : else
86 1616 : pAkt = pDelNext;
87 8260 : return pAkt ? pAkt->GetListener() : 0;
88 : }
89 :
90 14946 : SvtListener* SvtListenerIter::GoStart() // zum Anfang des Baums
91 : {
92 14946 : pAkt = rRoot.pRoot;
93 14946 : if( pAkt )
94 17400 : while( pAkt->GetLeft() )
95 128 : pAkt = pAkt->GetLeft();
96 14946 : pDelNext = pAkt;
97 14946 : return pAkt ? pAkt->GetListener() : 0;
98 : }
99 :
100 0 : SvtListener* SvtListenerIter::GetCurr() const // returns the current
101 : {
102 0 : return pDelNext ? pDelNext->GetListener() : 0;
103 : }
104 :
105 : /* vim:set shiftwidth=4 softtabstop=4 expandtab: */
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