188 lines
5.4 KiB
C++
188 lines
5.4 KiB
C++
/* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*- */
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/*************************************************************************
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*
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* DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
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*
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* Copyright 2000, 2010 Oracle and/or its affiliates.
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*
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* OpenOffice.org - a multi-platform office productivity suite
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*
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* This file is part of OpenOffice.org.
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*
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* OpenOffice.org is free software: you can redistribute it and/or modify
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* it under the terms of the GNU Lesser General Public License version 3
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* only, as published by the Free Software Foundation.
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*
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* OpenOffice.org is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU Lesser General Public License version 3 for more details
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* (a copy is included in the LICENSE file that accompanied this code).
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*
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* You should have received a copy of the GNU Lesser General Public License
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* version 3 along with OpenOffice.org. If not, see
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* <http://www.openoffice.org/license.html>
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* for a copy of the LGPLv3 License.
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*
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************************************************************************/
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#include <tools/debug.hxx>
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#include <osl/diagnose.h>
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#include <svl/hint.hxx>
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#include <svl/smplhint.hxx>
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#include <svl/lstner.hxx>
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SV_DECL_PTRARR( SfxListenerArr_Impl, SfxListener*, 0, 2 )
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#define _SFX_BRDCST_CXX
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#include <svl/brdcst.hxx>
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//====================================================================
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DBG_NAME(SfxBroadcaster)
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TYPEINIT0(SfxBroadcaster);
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//====================================================================
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//====================================================================
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// broadcast immediately
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void SfxBroadcaster::Broadcast( const SfxHint &rHint )
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{
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DBG_CHKTHIS(SfxBroadcaster, 0);
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// is anybody to notify?
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if ( aListeners.Count() /*! || aGlobListeners.Count() */ )
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{
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// notify all registered listeners exactly once
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for ( sal_uInt16 n = 0; n < aListeners.Count(); ++n )
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{
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SfxListener* pListener = aListeners[n];
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if ( pListener )
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pListener->Notify( *this, rHint );
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}
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}
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}
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// unregister all listeners
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SfxBroadcaster::~SfxBroadcaster()
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{
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DBG_DTOR(SfxBroadcaster, 0);
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Broadcast( SfxSimpleHint(SFX_HINT_DYING) );
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// remove all still registered listeners
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for ( sal_uInt16 nPos = 0; nPos < aListeners.Count(); ++nPos )
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{
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SfxListener *pListener = aListeners[nPos];
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if ( pListener )
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pListener->RemoveBroadcaster_Impl(*this);
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}
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}
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//--------------------------------------------------------------------
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// simple ctor of class SfxBroadcaster
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SfxBroadcaster::SfxBroadcaster()
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{
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DBG_CTOR(SfxBroadcaster, 0);
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}
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//--------------------------------------------------------------------
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// copy ctor of class SfxBroadcaster
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SfxBroadcaster::SfxBroadcaster( const SfxBroadcaster &rBC )
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{
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DBG_CTOR(SfxBroadcaster, 0);
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for ( sal_uInt16 n = 0; n < rBC.aListeners.Count(); ++n )
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{
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SfxListener *pListener = rBC.aListeners[n];
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if ( pListener )
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pListener->StartListening( *this );
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}
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}
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//--------------------------------------------------------------------
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// add a new SfxListener to the list
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sal_Bool SfxBroadcaster::AddListener( SfxListener& rListener )
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{
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DBG_CHKTHIS(SfxBroadcaster, 0);
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const SfxListener *pListener = &rListener;
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const SfxListener *pNull = 0;
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sal_uInt16 nFreePos = aListeners.GetPos( pNull );
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if ( nFreePos < aListeners.Count() )
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aListeners.GetData()[nFreePos] = pListener;
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else if ( aListeners.Count() < (USHRT_MAX-1) )
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aListeners.Insert( pListener, aListeners.Count() );
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else
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{
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OSL_FAIL( "array overflow" );
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return sal_False;
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}
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DBG_ASSERT( USHRT_MAX != aListeners.GetPos(pListener),
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"AddListener failed" );
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return sal_True;
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}
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//--------------------------------------------------------------------
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// called, if no more listeners exists
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void SfxBroadcaster::ListenersGone()
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{
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DBG_CHKTHIS(SfxBroadcaster,0);
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}
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//--------------------------------------------------------------------
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// forward a notification to all registered listeners
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void SfxBroadcaster::Forward(SfxBroadcaster& rBC, const SfxHint& rHint)
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{
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const sal_uInt16 nCount = aListeners.Count();
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for ( sal_uInt16 i = 0; i < nCount; ++i )
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{
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SfxListener *pListener = aListeners[i];
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if ( pListener )
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pListener->Notify( rBC, rHint );
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}
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}
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//--------------------------------------------------------------------
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// remove one SfxListener from the list
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void SfxBroadcaster::RemoveListener( SfxListener& rListener )
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{
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{DBG_CHKTHIS(SfxBroadcaster, 0);}
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const SfxListener *pListener = &rListener;
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sal_uInt16 nPos = aListeners.GetPos(pListener);
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DBG_ASSERT( nPos != USHRT_MAX, "RemoveListener: Listener unknown" );
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aListeners.GetData()[nPos] = 0;
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if ( !HasListeners() )
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ListenersGone();
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}
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//--------------------------------------------------------------------
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sal_Bool SfxBroadcaster::HasListeners() const
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{
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for ( sal_uInt16 n = 0; n < aListeners.Count(); ++n )
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if ( aListeners.GetObject(n) != 0 )
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return sal_True;
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return sal_False;
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}
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//--------------------------------------------------------------------
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/* vim:set shiftwidth=4 softtabstop=4 expandtab: */
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