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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 <sal/config.h>
#include <osl/diagnose.h>
#include <unotools/sharedunocomponent.hxx>
#include <com/sun/star/lang/XComponent.hpp>
#include <com/sun/star/util/CloseVetoException.hpp>
#include <com/sun/star/util/XCloseable.hpp>
#include <cppuhelper/implbase.hxx>
#include <tools/debug.hxx>
#include <tools/diagnose_ex.h>
namespace utl
{
using ::com::sun::star::uno::XInterface;
using ::com::sun::star::uno::Reference;
using ::com::sun::star::uno::Exception;
using ::com::sun::star::uno::UNO_QUERY;
using ::com::sun::star::lang::EventObject;
using ::com::sun::star::util::XCloseable;
using ::com::sun::star::util::XCloseListener;
using ::com::sun::star::util::CloseVetoException;
//= DisposableComponent
DisposableComponent::DisposableComponent( const Reference< XInterface >& _rxComponent )
:m_xComponent( _rxComponent, UNO_QUERY )
{
DBG_ASSERT( m_xComponent.is() || !_rxComponent.is(), "DisposableComponent::DisposableComponent: should be an XComponent!" );
}
DisposableComponent::~DisposableComponent()
{
if ( m_xComponent.is() )
{
try
{
m_xComponent->dispose();
}
catch( const Exception& )
{
TOOLS_WARN_EXCEPTION( "unotools", "DisposableComponent::~DisposableComponent" );
}
m_xComponent.clear();
}
}
typedef ::cppu::WeakImplHelper < XCloseListener
> CloseableComponentImpl_Base;
class CloseableComponentImpl : public CloseableComponentImpl_Base
{
private:
Reference< XCloseable > m_xCloseable;
CloseableComponentImpl(const CloseableComponentImpl&) = delete;
CloseableComponentImpl& operator=(const CloseableComponentImpl&) = delete;
public:
explicit CloseableComponentImpl( const Reference< XInterface >& _rxComponent );
/** closes the component
@nofail
*/
void nf_closeComponent();
protected:
virtual ~CloseableComponentImpl() override;
// XCloseListener overridables
virtual void SAL_CALL queryClosing( const EventObject& Source, sal_Bool GetsOwnership ) override;
virtual void SAL_CALL notifyClosing( const EventObject& Source ) override;
// XEventListener overridables
virtual void SAL_CALL disposing( const css::lang::EventObject& Source ) override;
private:
/** starts or stops being a CloseListener at the component
Only to be called upon construction of the instance, or when the component
is to be closed.
@nofail
*/
void impl_nf_switchListening( bool _bListen );
};
CloseableComponentImpl::CloseableComponentImpl( const Reference< XInterface >& _rxComponent )
:m_xCloseable( _rxComponent, UNO_QUERY )
{
DBG_ASSERT( m_xCloseable.is() || !_rxComponent.is(), "CloseableComponentImpl::CloseableComponentImpl: component is not an XCloseable!" );
impl_nf_switchListening( true );
}
CloseableComponentImpl::~CloseableComponentImpl()
{
nf_closeComponent();
}
void CloseableComponentImpl::nf_closeComponent()
{
if ( !m_xCloseable.is() )
// nothing to do
return;
// stop listening
impl_nf_switchListening( false );
// close
try
{
m_xCloseable->close( true );
}
catch( const CloseVetoException& ) { /* fine */ }
catch( const Exception& )
{
OSL_FAIL( "CloseableComponentImpl::nf_closeComponent: caught an unexpected exception!" );
}
// reset
m_xCloseable.clear();
}
void CloseableComponentImpl::impl_nf_switchListening( bool _bListen )
{
if ( !m_xCloseable.is() )
return;
try
{
if ( _bListen )
m_xCloseable->addCloseListener( this );
else
m_xCloseable->removeCloseListener( this );
}
catch( const Exception& )
{
TOOLS_WARN_EXCEPTION( "unotools", "CloseableComponentImpl::impl_nf_switchListening" );
}
}
void SAL_CALL CloseableComponentImpl::queryClosing( const EventObject& Source, sal_Bool /*GetsOwnership*/ )
{
// as long as we live, somebody wants to keep the object alive. So, veto the
// closing
DBG_ASSERT( Source.Source == m_xCloseable, "CloseableComponentImpl::queryClosing: where did this come from?" );
throw CloseVetoException();
}
void SAL_CALL CloseableComponentImpl::notifyClosing( const EventObject& Source )
{
DBG_ASSERT( Source.Source == m_xCloseable, "CloseableComponentImpl::notifyClosing: where did this come from?" );
// this should be unreachable: As long as we're a CloseListener, we veto the closing. If we're going
// to close the component ourself, then we revoke ourself as listener *before* the close call. So,
// if this here fires, something went definitely wrong.
OSL_FAIL( "CloseableComponentImpl::notifyClosing: unreachable!" );
}
void SAL_CALL CloseableComponentImpl::disposing( const EventObject& Source )
{
DBG_ASSERT( Source.Source == m_xCloseable, "CloseableComponentImpl::disposing: where did this come from?" );
OSL_FAIL( "CloseableComponentImpl::disposing: unreachable!" );
// same reasoning for this assertion as in ->notifyClosing
}
CloseableComponent::CloseableComponent( const Reference< XInterface >& _rxComponent )
:m_pImpl( new CloseableComponentImpl( _rxComponent ) )
{
}
CloseableComponent::~CloseableComponent()
{
// close the component, deliver ownership to anybody who wants to veto the close
m_pImpl->nf_closeComponent();
}
} // namespace utl
/* vim:set shiftwidth=4 softtabstop=4 expandtab: */
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