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/* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*- */
/*
* This file is part of the LibreOffice project.
*
* This Source Code Form is subject to the terms of the Mozilla Public
* License, v. 2.0. If a copy of the MPL was not distributed with this
* file, You can obtain one at http://mozilla.org/MPL/2.0/.
*
* This file incorporates work covered by the following license notice:
*
* Licensed to the Apache Software Foundation (ASF) under one or more
* contributor license agreements. See the NOTICE file distributed
* with this work for additional information regarding copyright
* ownership. The ASF licenses this file to you under the Apache
* License, Version 2.0 (the "License"); you may not use this file
* except in compliance with the License. You may obtain a copy of
* the License at http://www.apache.org/licenses/LICENSE-2.0 .
*/
#include <tools/debug.hxx>
#include <svl/hint.hxx>
#include <svl/brdcst.hxx>
#include <svl/lstner.hxx>
#include <algorithm>
//====================================================================
DBG_NAME(SfxListener)
TYPEINIT0(SfxListener);
//====================================================================
// simple ctor of class SfxListener
SfxListener::SfxListener()
{
DBG_CTOR(SfxListener, 0);
}
//--------------------------------------------------------------------
// copy ctor of class SfxListener
SfxListener::SfxListener( const SfxListener &rListener )
{
DBG_CTOR(SfxListener, 0);
for ( sal_uInt16 n = 0; n < rListener.aBCs.size(); ++n )
StartListening( *rListener.aBCs[n] );
}
//--------------------------------------------------------------------
// unregisters the SfxListener from its SfxBroadcasters
SfxListener::~SfxListener()
{
DBG_DTOR(SfxListener, 0);
// unregister at all remaining broadcasters
for ( sal_uInt16 nPos = 0; nPos < aBCs.size(); ++nPos )
{
SfxBroadcaster *pBC = aBCs[nPos];
pBC->RemoveListener(*this);
}
}
//--------------------------------------------------------------------
// unregisters a specific SfxBroadcaster
void SfxListener::RemoveBroadcaster_Impl( SfxBroadcaster& rBroadcaster )
{
DBG_CHKTHIS(SfxListener, 0);
aBCs.erase( std::find( aBCs.begin(), aBCs.end(), &rBroadcaster ) );
}
//--------------------------------------------------------------------
// registers a specific SfxBroadcaster
sal_Bool SfxListener::StartListening( SfxBroadcaster& rBroadcaster, sal_Bool bPreventDups )
{
DBG_CHKTHIS(SfxListener, 0);
if ( !bPreventDups || !IsListening( rBroadcaster ) )
{
if ( rBroadcaster.AddListener(*this) )
{
aBCs.push_back( &rBroadcaster );
DBG_ASSERT( IsListening(rBroadcaster), "StartListening failed" );
return sal_True;
}
}
return sal_False;
}
//--------------------------------------------------------------------
// unregisters a specific SfxBroadcaster
sal_Bool SfxListener::EndListening( SfxBroadcaster& rBroadcaster, sal_Bool bAllDups )
{
DBG_CHKTHIS(SfxListener, 0);
if ( !IsListening( rBroadcaster ) )
return sal_False;
do
{
rBroadcaster.RemoveListener(*this);
aBCs.erase( std::find( aBCs.begin(), aBCs.end(), &rBroadcaster ) );
}
while ( bAllDups && IsListening( rBroadcaster ) );
return sal_True;
}
//--------------------------------------------------------------------
// unregisters all Broadcasters
void SfxListener::EndListeningAll()
{
DBG_CHKTHIS(SfxListener, 0);
// MI: bei Optimierung beachten: Seiteneffekte von RemoveListener beachten!
while ( !aBCs.empty() )
{
SfxBroadcaster *pBC = aBCs.front();
pBC->RemoveListener(*this);
aBCs.pop_front();
}
}
//--------------------------------------------------------------------
sal_Bool SfxListener::IsListening( SfxBroadcaster& rBroadcaster ) const
{
return aBCs.end() != std::find( aBCs.begin(), aBCs.end(), &rBroadcaster );
}
//--------------------------------------------------------------------
// base implementation of notification handler
#ifdef DBG_UTIL
void SfxListener::Notify( SfxBroadcaster& rBroadcaster, const SfxHint& )
#else
void SfxListener::Notify( SfxBroadcaster&, const SfxHint& )
#endif
{
#ifdef DBG_UTIL
DBG_ASSERT(aBCs.end() != std::find(aBCs.begin(), aBCs.end(), &rBroadcaster),
"notification from unregistered broadcaster" );
#endif
}
/* vim:set shiftwidth=4 softtabstop=4 expandtab: */
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