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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 <svl/listener.hxx>
#include <svl/broadcast.hxx>
SvtListener::~SvtListener() COVERITY_NOEXCEPT_FALSE
{
// Unregister itself from all broadcasters it's listening to.
EndListeningAll();
}
// registers at a specific SvtBroadcaster
bool SvtListener::StartListening( SvtBroadcaster& rBroadcaster )
{
std::pair<BroadcastersType::const_iterator, bool> r =
maBroadcasters.insert(&rBroadcaster);
if (r.second)
{
// This is a new broadcaster.
rBroadcaster.Add(this);
}
return r.second;
}
void SvtListener::EndListening( SvtBroadcaster& rBroadcaster )
{
BroadcastersType::const_iterator it = maBroadcasters.find(&rBroadcaster);
if (it == maBroadcasters.end())
// Not listening to this broadcaster.
return;
maBroadcasters.erase(it);
rBroadcaster.Remove(this);
}
// called from the SvtBroadcaster destructor, used to avoid calling
// back into the broadcaster again
void SvtListener::BroadcasterDying( SvtBroadcaster& rBroadcaster )
{
BroadcastersType::const_iterator it = maBroadcasters.find(&rBroadcaster);
if (it != maBroadcasters.end())
maBroadcasters.erase(it);
}
void SvtListener::EndListeningAll()
{
for (SvtBroadcaster* p : maBroadcasters)
{
SvtBroadcaster& rBC = *p;
rBC.Remove(this);
}
maBroadcasters.clear();
}
void SvtListener::CopyAllBroadcasters( const SvtListener& r )
{
EndListeningAll();
BroadcastersType aCopy(r.maBroadcasters);
maBroadcasters.swap(aCopy);
for (SvtBroadcaster* p : maBroadcasters)
{
p->Add(this);
}
}
void SvtListener::Notify( const SfxHint& /*rHint*/ ) {}
void SvtListener::Query( QueryBase& /*rQuery*/ ) const {}
/* vim:set shiftwidth=4 softtabstop=4 expandtab: */
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