UndoGuard.cxx

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/* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*- */
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#include "UndoGuard.hxx"
#include "ChartModelClone.hxx"
#include "UndoActions.hxx"
#include <ChartModel.hxx>
 
#include <com/sun/star/document/XUndoManager.hpp>
#include <utility>
 
#include <comphelper/diagnose_ex.hxx>
 
using namespace ::com::sun::star;
 
using ::com::sun::star::uno::Reference;
 
namespace chart
{
 
UndoGuard::UndoGuard( OUString i_undoString, const uno::Reference< document::XUndoManager > & i_undoManager,
                               const ModelFacet i_facet )
    :m_xUndoManager( i_undoManager )
    ,m_aUndoString(std::move( i_undoString ))
    ,m_bActionPosted( false )
{
    m_xChartModel = dynamic_cast<::chart::ChartModel*>(i_undoManager->getParent().get());
    assert(m_xChartModel);
    m_pDocumentSnapshot = std::make_shared<ChartModelClone>( m_xChartModel, i_facet );
}
 
UndoGuard::~UndoGuard()
{
    if ( m_pDocumentSnapshot )
        discardSnapshot();
}
 
void UndoGuard::commit()
{
    if ( !m_bActionPosted && m_pDocumentSnapshot )
    {
        try
        {
            const Reference< document::XUndoAction > xAction( new impl::UndoElement( m_aUndoString, m_xChartModel, m_pDocumentSnapshot ) );
            m_pDocumentSnapshot.reset();    // don't dispose, it's data went over to the UndoElement
            m_xUndoManager->addUndoAction( xAction );
        }
        catch( const uno::Exception& )
        {
            DBG_UNHANDLED_EXCEPTION("chart2");
        }
    }
    m_bActionPosted = true;
}
 
void UndoGuard::rollback()
{
    ENSURE_OR_RETURN_VOID( !!m_pDocumentSnapshot, "no snapshot!" );
    m_pDocumentSnapshot->applyToModel( m_xChartModel );
    discardSnapshot();
}
 
void UndoGuard::discardSnapshot()
{
    ENSURE_OR_RETURN_VOID( !!m_pDocumentSnapshot, "no snapshot!" );
    m_pDocumentSnapshot->dispose();
    m_pDocumentSnapshot.reset();
}
 
UndoLiveUpdateGuard::UndoLiveUpdateGuard( const OUString& i_undoString, const uno::Reference< document::XUndoManager >& i_undoManager )
    :UndoGuard( i_undoString, i_undoManager, E_MODEL )
{
}
 
UndoLiveUpdateGuard::~UndoLiveUpdateGuard()
{
    if ( !isActionPosted() )
        rollback();
}
 
UndoLiveUpdateGuardWithData::UndoLiveUpdateGuardWithData(
        const OUString& i_undoString, const uno::Reference< document::XUndoManager >& i_undoManager )
    :UndoGuard( i_undoString, i_undoManager, E_MODEL_WITH_DATA )
{
}
 
UndoLiveUpdateGuardWithData::~UndoLiveUpdateGuardWithData()
{
    if ( !isActionPosted() )
        rollback();
}
 
UndoGuardWithSelection::UndoGuardWithSelection(
        const OUString& i_undoString, const uno::Reference< document::XUndoManager >& i_undoManager )
    :UndoGuard( i_undoString, i_undoManager, E_MODEL_WITH_SELECTION )
{
}
 
UndoGuardWithSelection::~UndoGuardWithSelection()
{
    if ( !isActionPosted() )
        rollback();
}
 
HiddenUndoContext::HiddenUndoContext( const Reference< document::XUndoManager > & i_undoManager )
    :m_xUndoManager( i_undoManager )
{
    ENSURE_OR_THROW( m_xUndoManager.is(), "invalid undo manager!" );
    try
    {
        m_xUndoManager->enterHiddenUndoContext();
    }
    catch( const uno::Exception& )
    {
        DBG_UNHANDLED_EXCEPTION("chart2");
        m_xUndoManager.clear();
            // prevents the leaveUndoContext in the dtor
    }
}
 
HiddenUndoContext::~HiddenUndoContext()
{
    try
    {
        if ( m_xUndoManager.is() )
            m_xUndoManager->leaveUndoContext();
    }
    catch( const uno::Exception& )
    {
        DBG_UNHANDLED_EXCEPTION("chart2");
    }
}
 
} //  namespace chart
 
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