1*40df464eSAndrew Rist /**************************************************************
2cdf0e10cSrcweir *
3*40df464eSAndrew Rist * Licensed to the Apache Software Foundation (ASF) under one
4*40df464eSAndrew Rist * or more contributor license agreements. See the NOTICE file
5*40df464eSAndrew Rist * distributed with this work for additional information
6*40df464eSAndrew Rist * regarding copyright ownership. The ASF licenses this file
7*40df464eSAndrew Rist * to you under the Apache License, Version 2.0 (the
8*40df464eSAndrew Rist * "License"); you may not use this file except in compliance
9*40df464eSAndrew Rist * with the License. You may obtain a copy of the License at
10*40df464eSAndrew Rist *
11*40df464eSAndrew Rist * http://www.apache.org/licenses/LICENSE-2.0
12*40df464eSAndrew Rist *
13*40df464eSAndrew Rist * Unless required by applicable law or agreed to in writing,
14*40df464eSAndrew Rist * software distributed under the License is distributed on an
15*40df464eSAndrew Rist * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
16*40df464eSAndrew Rist * KIND, either express or implied. See the License for the
17*40df464eSAndrew Rist * specific language governing permissions and limitations
18*40df464eSAndrew Rist * under the License.
19*40df464eSAndrew Rist *
20*40df464eSAndrew Rist *************************************************************/
21*40df464eSAndrew Rist
22*40df464eSAndrew Rist
23cdf0e10cSrcweir
24cdf0e10cSrcweir // MARKER(update_precomp.py): autogen include statement, do not remove
25cdf0e10cSrcweir #include "precompiled_svl.hxx"
26cdf0e10cSrcweir
27cdf0e10cSrcweir #include <tools/debug.hxx>
28cdf0e10cSrcweir #include "listenerbase.hxx"
29cdf0e10cSrcweir #include <svl/listeneriter.hxx>
30cdf0e10cSrcweir #include <svl/listener.hxx>
31cdf0e10cSrcweir #include <svl/broadcast.hxx>
32cdf0e10cSrcweir
33cdf0e10cSrcweir
SvtListenerBase(SvtListener & rLst,SvtBroadcaster & rBroadcaster)34cdf0e10cSrcweir SvtListenerBase::SvtListenerBase( SvtListener& rLst,
35cdf0e10cSrcweir SvtBroadcaster& rBroadcaster )
36cdf0e10cSrcweir : pLeft( 0 ), pRight( 0 ),
37cdf0e10cSrcweir pBroadcaster( &rBroadcaster ), pListener( &rLst )
38cdf0e10cSrcweir {
39cdf0e10cSrcweir pNext = rLst.pBrdCastLst;
40cdf0e10cSrcweir rLst.pBrdCastLst = this;
41cdf0e10cSrcweir
42cdf0e10cSrcweir if( pBroadcaster->pRoot )
43cdf0e10cSrcweir {
44cdf0e10cSrcweir // set ever behind the root
45cdf0e10cSrcweir pRight = pBroadcaster->pRoot->pRight;
46cdf0e10cSrcweir pBroadcaster->pRoot->pRight = this;
47cdf0e10cSrcweir this->pLeft = pBroadcaster->pRoot;
48cdf0e10cSrcweir if( pRight )
49cdf0e10cSrcweir pRight->pLeft = this;
50cdf0e10cSrcweir }
51cdf0e10cSrcweir else
52cdf0e10cSrcweir pBroadcaster->pRoot = this;
53cdf0e10cSrcweir }
54cdf0e10cSrcweir
~SvtListenerBase()55cdf0e10cSrcweir SvtListenerBase::~SvtListenerBase()
56cdf0e10cSrcweir {
57cdf0e10cSrcweir SvtListenerBase *pR = pRight, *pL = pLeft;
58cdf0e10cSrcweir if( pBroadcaster->pRoot )
59cdf0e10cSrcweir pBroadcaster->pRoot = pL ? pL : pR;
60cdf0e10cSrcweir
61cdf0e10cSrcweir if( pL )
62cdf0e10cSrcweir pL->pRight = pR;
63cdf0e10cSrcweir if( pR )
64cdf0e10cSrcweir pR->pLeft = pL;
65cdf0e10cSrcweir
66cdf0e10cSrcweir SvtListenerIter::RemoveListener( *this, pR );
67cdf0e10cSrcweir
68cdf0e10cSrcweir if( !pBroadcaster->pRoot )
69cdf0e10cSrcweir pBroadcaster->ListenersGone();
70cdf0e10cSrcweir }
71cdf0e10cSrcweir
72cdf0e10cSrcweir
73