/* -*- 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 <framework/documentundoguard.hxx>
#include <com/sun/star/document/XUndoManagerSupplier.hpp>
#include <cppuhelper/implbase.hxx>
#include <rtl/ref.hxx>
#include <comphelper/diagnose_ex.hxx>
namespace framework
{
using ::com::sun::star::uno::Reference;
using ::com::sun::star::uno::XInterface;
using ::com::sun::star::uno::UNO_QUERY;
using ::com::sun::star::uno::Exception;
using ::com::sun::star::document::XUndoManagerSupplier;
using ::com::sun::star::document::XUndoManager;
using ::com::sun::star::document::XUndoManagerListener;
using ::com::sun::star::document::UndoManagerEvent;
using ::com::sun::star::lang::EventObject;
//= UndoManagerContextListener
typedef ::cppu::WeakImplHelper < XUndoManagerListener
> UndoManagerContextListener_Base;
class UndoManagerContextListener : public UndoManagerContextListener_Base
{
public :
explicit UndoManagerContextListener( const Reference< XUndoManager >& i_undoManager )
:m_xUndoManager( i_undoManager )
,m_nRelativeContextDepth( 0 )
,m_documentDisposed( false )
{
osl_atomic_increment( &m_refCount );
{
m_xUndoManager->addUndoManagerListener( this );
}
osl_atomic_decrement( &m_refCount );
}
void finish()
{
OSL_ENSURE( m_nRelativeContextDepth >= 0 , "UndoManagerContextListener: more contexts left than entered?" );
if ( m_documentDisposed )
return ;
// work with a copy of m_nRelativeContextDepth, to be independent from possible bugs in the
// listener notifications (where it would be decremented with every leaveUndoContext)
sal_Int32 nDepth = m_nRelativeContextDepth;
while ( nDepth-- > 0 )
{
m_xUndoManager->leaveUndoContext();
}
m_xUndoManager->removeUndoManagerListener( this );
}
// XUndoManagerListener
virtual void SAL_CALL undoActionAdded( const UndoManagerEvent& i_event ) override;
virtual void SAL_CALL actionUndone( const UndoManagerEvent& i_event ) override;
virtual void SAL_CALL actionRedone( const UndoManagerEvent& i_event ) override;
virtual void SAL_CALL allActionsCleared( const EventObject& i_event ) override;
virtual void SAL_CALL redoActionsCleared( const EventObject& i_event ) override;
virtual void SAL_CALL resetAll( const EventObject& i_event ) override;
virtual void SAL_CALL enteredContext( const UndoManagerEvent& i_event ) override;
virtual void SAL_CALL enteredHiddenContext( const UndoManagerEvent& i_event ) override;
virtual void SAL_CALL leftContext( const UndoManagerEvent& i_event ) override;
virtual void SAL_CALL leftHiddenContext( const UndoManagerEvent& i_event ) override;
virtual void SAL_CALL cancelledContext( const UndoManagerEvent& i_event ) override;
// XEventListener
virtual void SAL_CALL disposing( const EventObject& i_event ) override;
private :
Reference< XUndoManager > const m_xUndoManager;
oslInterlockedCount m_nRelativeContextDepth;
bool m_documentDisposed;
};
void SAL_CALL UndoManagerContextListener::undoActionAdded( const UndoManagerEvent& )
{
// not interested in
}
void SAL_CALL UndoManagerContextListener::actionUndone( const UndoManagerEvent& )
{
// not interested in
}
void SAL_CALL UndoManagerContextListener::actionRedone( const UndoManagerEvent& )
{
// not interested in
}
void SAL_CALL UndoManagerContextListener::allActionsCleared( const EventObject& )
{
// not interested in
}
void SAL_CALL UndoManagerContextListener::redoActionsCleared( const EventObject& )
{
// not interested in
}
void SAL_CALL UndoManagerContextListener::resetAll( const EventObject& )
{
m_nRelativeContextDepth = 0 ;
}
void SAL_CALL UndoManagerContextListener::enteredContext( const UndoManagerEvent& )
{
osl_atomic_increment( &m_nRelativeContextDepth );
}
void SAL_CALL UndoManagerContextListener::enteredHiddenContext( const UndoManagerEvent& )
{
osl_atomic_increment( &m_nRelativeContextDepth );
}
void SAL_CALL UndoManagerContextListener::leftContext( const UndoManagerEvent& )
{
osl_atomic_decrement( &m_nRelativeContextDepth );
}
void SAL_CALL UndoManagerContextListener::leftHiddenContext( const UndoManagerEvent& )
{
osl_atomic_decrement( &m_nRelativeContextDepth );
}
void SAL_CALL UndoManagerContextListener::cancelledContext( const UndoManagerEvent& )
{
osl_atomic_decrement( &m_nRelativeContextDepth );
}
void SAL_CALL UndoManagerContextListener::disposing( const EventObject& )
{
m_documentDisposed = true ;
}
//= DocumentUndoGuard
DocumentUndoGuard::DocumentUndoGuard( const Reference< XInterface >& i_undoSupplierComponent )
{
try
{
Reference< XUndoManagerSupplier > xUndoSupplier( i_undoSupplierComponent, UNO_QUERY );
if ( xUndoSupplier.is() )
mxUndoManager.set( xUndoSupplier->getUndoManager(), css::uno::UNO_SET_THROW );
if ( mxUndoManager.is() )
mxContextListener.set( new UndoManagerContextListener( mxUndoManager ) );
}
catch ( const Exception& )
{
DBG_UNHANDLED_EXCEPTION("fwk" );
}
}
DocumentUndoGuard::~DocumentUndoGuard()
{
try
{
if ( mxContextListener.is() )
mxContextListener->finish();
mxContextListener.clear();
}
catch ( const Exception& )
{
DBG_UNHANDLED_EXCEPTION("fwk" );
}
}
} // namespace framework
/* vim:set shiftwidth=4 softtabstop=4 expandtab: */
Messung V0.5 in Prozent C=92 H=98 G=94
¤ Dauer der Verarbeitung: 0.11 Sekunden
(vorverarbeitet am 2026-10-01)
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