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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 <comphelper/weakeventlistener.hxx>
#include <osl/diagnose.h>
namespace comphelper
{
using namespace ::com::sun::star::uno;
using namespace ::com::sun::star::lang;
OWeakListenerAdapterBase::~OWeakListenerAdapterBase()
{
}
OWeakEventListenerAdapter::OWeakEventListenerAdapter( Reference< XWeak > const & _rxListener, Reference< XComponent > const & _rxBroadcaster )
:OWeakEventListenerAdapter_Base( _rxListener, _rxBroadcaster )
{
// add ourself as listener to the broadcaster
OSL_ENSURE( _rxBroadcaster.is(), "OWeakEventListenerAdapter::OWeakEventListenerAdapter: invalid broadcaster!" );
if ( _rxBroadcaster.is() )
{
osl_atomic_increment( &m_refCount );
{
_rxBroadcaster->addEventListener( this );
}
osl_atomic_decrement( &m_refCount );
OSL_ENSURE( m_refCount > 0, "OWeakEventListenerAdapter::OWeakEventListenerAdapter: oops - not to be used with implementations which hold their listeners weak!" );
// the one and only reason for this adapter class (A) is to add as listener to a component (C) which
// holds its listeners hard, and forward all calls then to another listener (L) which is
// held weak by A.
// Now if C holds listeners weak, then we do not need A, we can add L directly to C.
}
OSL_ENSURE( getListener().is(), "OWeakEventListenerAdapter::OWeakEventListenerAdapter: invalid listener (does not support the XEventListener interface)!" );
}
void SAL_CALL OWeakEventListenerAdapter::disposing( )
{
Reference< XComponent > xBroadcaster( getBroadcaster( ), UNO_QUERY );
OSL_ENSURE( xBroadcaster.is(), "OWeakEventListenerAdapter::disposing: broadcaster is invalid in the meantime! How this?" );
if ( xBroadcaster.is() )
{
xBroadcaster->removeEventListener( this );
}
resetListener();
}
} // namespace comphelper
/* vim:set shiftwidth=4 softtabstop=4 expandtab: */
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