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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>
#include <tools/debug.hxx>
SvtListener::SvtListener() {}
SvtListener::SvtListener( const SvtListener &r ) :
maBroadcasters(r.maBroadcasters) {}
SvtListener::~SvtListener()
{
// Unregister itself from all broadcasters it's listening to.
EndListeningAll();
}
// registeres at a specific SvtBroadcaster
bool SvtListener::StartListening( SvtBroadcaster& rBroadcaster )
{
std::pair<BroadcastersType::iterator, bool> r =
maBroadcasters.insert(&rBroadcaster);
if (r.second)
{
// This is a new broadcaster.
rBroadcaster.Add(this);
}
return r.second;
}
bool SvtListener::EndListening( SvtBroadcaster& rBroadcaster )
{
BroadcastersType::iterator it = maBroadcasters.find(&rBroadcaster);
if (it == maBroadcasters.end())
// Not listening to this broadcaster.
return false;
rBroadcaster.Remove(this);
maBroadcasters.erase(it);
return true;
}
void SvtListener::EndListeningAll()
{
BroadcastersType::iterator it = maBroadcasters.begin(), itEnd = maBroadcasters.end();
for (; it != itEnd; ++it)
{
SvtBroadcaster& rBC = **it;
rBC.Remove(this);
}
maBroadcasters.clear();
}
bool SvtListener::IsListening( SvtBroadcaster& rBroadcaster ) const
{
return maBroadcasters.count(&rBroadcaster) > 0;
}
bool SvtListener::HasBroadcaster() const
{
return !maBroadcasters.empty();
}
void SvtListener::Notify( const SfxHint& ) {}
/* vim:set shiftwidth=4 softtabstop=4 expandtab: */
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