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Diffstat (limited to 'svl/source/notify/listener.cxx')
-rw-r--r-- | svl/source/notify/listener.cxx | 169 |
1 files changed, 169 insertions, 0 deletions
diff --git a/svl/source/notify/listener.cxx b/svl/source/notify/listener.cxx new file mode 100644 index 000000000000..7d9a223e1a73 --- /dev/null +++ b/svl/source/notify/listener.cxx @@ -0,0 +1,169 @@ +/************************************************************************* + * + * 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: listener.cxx,v $ + * $Revision: 1.6 $ + * + * 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. + * + ************************************************************************/ + +// MARKER(update_precomp.py): autogen include statement, do not remove +#include "precompiled_svl.hxx" +#ifndef GCC +#endif + +#ifndef DEBUG_HXX +#include <tools/debug.hxx> +#endif + +#include "broadcast.hxx" +#include "listener.hxx" +#include "listenerbase.hxx" +#include "listeneriter.hxx" + + +//==================================================================== +TYPEINIT0(SvtListener); + +//==================================================================== +// simple ctor of class SvtListener + +SvtListener::SvtListener() + : pBrdCastLst( 0 ) +{ +} +//-------------------------------------------------------------------- + +// copy ctor of class SvtListener + +SvtListener::SvtListener( const SvtListener &rListener ) + : pBrdCastLst( 0 ) +{ + SvtListenerBase* pLst = rListener.pBrdCastLst; + while( pLst ) + { + new SvtListenerBase( *this, *pLst->GetBroadcaster() ); + pLst = pLst->GetNext(); + } +} +//-------------------------------------------------------------------- + +// unregisteres the SvtListener from its SvtBroadcasters + +SvtListener::~SvtListener() +{ + EndListeningAll(); +} + +//-------------------------------------------------------------------- + +// registeres at a specific SvtBroadcaster + +BOOL SvtListener::StartListening( SvtBroadcaster& rBroadcaster ) +{ + const SvtListenerBase* pLst = pBrdCastLst; + while( pLst ) + { + if( &rBroadcaster == pLst->GetBroadcaster() ) + { + // double, than return + return FALSE; + } + pLst = pLst->GetNext(); + } + new SvtListenerBase( *this, rBroadcaster ); + return TRUE; +} + +//-------------------------------------------------------------------- + +// unregisteres at a specific SvtBroadcaster + +BOOL SvtListener::EndListening( SvtBroadcaster& rBroadcaster ) +{ + SvtListenerBase *pLst = pBrdCastLst, *pPrev = pLst; + while( pLst ) + { + if( &rBroadcaster == pLst->GetBroadcaster() ) + { + if( pBrdCastLst == pLst ) + pBrdCastLst = pLst->GetNext(); + else + pPrev->SetNext( pLst->GetNext() ); + + delete pLst; + return TRUE; + } + pPrev = pLst; + pLst = pLst->GetNext(); + } + return FALSE; +} + +//-------------------------------------------------------------------- + +// unregisteres all Broadcasters + +void SvtListener::EndListeningAll() +{ + SvtListenerBase *pLst = pBrdCastLst; + while( pLst ) + { + SvtListenerBase *pDel = pLst; + pLst = pLst->GetNext(); + + delete pDel; + } + pBrdCastLst = 0; +} + +//-------------------------------------------------------------------- + +BOOL SvtListener::IsListening( SvtBroadcaster& rBroadcaster ) const +{ + const SvtListenerBase *pLst = pBrdCastLst; + while( pLst ) + { + if( &rBroadcaster == pLst->GetBroadcaster() ) + break; + pLst = pLst->GetNext(); + } + return 0 != pLst; +} + +//-------------------------------------------------------------------- + +// base implementation of notification handler + +void SvtListener::Notify( SvtBroadcaster& +#ifdef DBG_UTIL +rBC +#endif +, const SfxHint& ) +{ + DBG_ASSERT( IsListening( rBC ), + "notification from unregistered broadcaster" ); +} + + |