/* -*- 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 <LegendHelper.hxx>

#include <Legend.hxx>

#include <ChartModel.hxx>

#include <Diagram.hxx>

#include <com/sun/star/chart/ChartLegendExpansion.hpp>

#include <com/sun/star/chart2/LegendPosition.hpp>

#include <com/sun/star/chart2/RelativePosition.hpp>

#include <com/sun/star/uno/XComponentContext.hpp>

#include <comphelper/diagnose_ex.hxx>

using namespace ::com::sun::star;

using ::com::sun::star::uno::Reference;

namespace chart

{

rtl::Reference< Legend > LegendHelper::showLegend( ChartModel& rModel

                                                    , const uno::Reference< uno::XComponentContext >& xContext )

{

    rtl::Reference< Legend > xLegend = LegendHelper::getLegend( rModel, xContext, true );

    if( xLegend.is())

    {

        xLegend->setPropertyValue( u"Show"_ustr, uno::Any(true) );

        chart2::RelativePosition aRelativePosition;

        if( !(xLegend->getPropertyValue( u"RelativePosition"_ustr) >>=  aRelativePosition) )

        {

            chart2::LegendPosition ePos = chart2::LegendPosition_LINE_END;

            if( !(xLegend->getPropertyValue( u"AnchorPosition"_ustr) >>= ePos ) )

                xLegend->setPropertyValue( u"AnchorPosition"_ustr, uno::Any( ePos ));

            css::chart::ChartLegendExpansion eExpansion =

                    ( ePos == chart2::LegendPosition_LINE_END ||

                      ePos == chart2::LegendPosition_LINE_START )

                    ? css::chart::ChartLegendExpansion_HIGH

                    : css::chart::ChartLegendExpansion_WIDE;

            if( !(xLegend->getPropertyValue( u"Expansion"_ustr) >>= eExpansion ) )

                xLegend->setPropertyValue( u"Expansion"_ustr, uno::Any( eExpansion ));

            xLegend->setPropertyValue( u"RelativePosition"_ustr, uno::Any());

        }

    }

    return xLegend;

}

void LegendHelper::hideLegend( ChartModel& rModel )

{

    rtl::Reference< Legend > xLegend = LegendHelper::getLegend( rModel, nullptr );

    if( xLegend.is())

    {

        xLegend->setPropertyValue( u"Show"_ustr, uno::Any(false) );

    }

}

rtl::Reference< Legend > LegendHelper::getLegend(

      ChartModel& rModel

    , const uno::Reference< uno::XComponentContext >& xContext

    , bool bCreate )

{

    rtl::Reference< Legend > xResult;

    try

    {

        rtl::Reference< Diagram > xDia( rModel.getFirstChartDiagram());

        if( xDia.is() )

        {

            xResult = xDia->getLegend2();

            if( bCreate && !xResult.is() && xContext.is() )

            {

                xResult = new Legend();

                xDia->setLegend( xResult );

            }

        }

        else if(bCreate)

        {

            OSL_FAIL("need diagram for creation of legend");

        }

    }

    catch( const uno::Exception & )

    {

        DBG_UNHANDLED_EXCEPTION("chart2");

    }

    return xResult;

}

bool LegendHelper::hasLegend( const rtl::Reference< Diagram > & xDiagram )

{

    bool bReturn = false;

    if( xDiagram.is())

    {

        uno::Reference< beans::XPropertySet > xLegendProp( xDiagram->getLegend(), uno::UNO_QUERY );

        if( xLegendProp.is())

            xLegendProp->getPropertyValue( u"Show"_ustr) >>= bReturn;

    }

    return bReturn;

}

} //namespace chart

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