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 * This file is part of the LibreOffice project.
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 * 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
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 */
#ifndef INCLUDED_CHART2_SOURCE_INC_STATISTICSHELPER_HXX
#define INCLUDED_CHART2_SOURCE_INC_STATISTICSHELPER_HXX

#include <com/sun/star/uno/Reference.h>
#include <rtl/ustring.hxx>
#include "charttoolsdllapi.hxx"

namespace com { namespace sun { namespace star { namespace beans { class XPropertySet; } } } }
namespace com { namespace sun { namespace star { namespace chart2 { class XDataSeries; } } } }
namespace com { namespace sun { namespace star { namespace chart2 { namespace data { class XDataProvider; } } } } }
namespace com { namespace sun { namespace star { namespace chart2 { namespace data { class XDataSequence; } } } } }
namespace com { namespace sun { namespace star { namespace chart2 { namespace data { class XDataSource; } } } } }
namespace com { namespace sun { namespace star { namespace chart2 { namespace data { class XLabeledDataSequence; } } } } }
namespace com { namespace sun { namespace star { namespace uno { template <typename > class Sequence; } } } }

namespace chart
{

namespace StatisticsHelper
{
    /** Calculates 1/n * sum (x_i - x_mean)^2.

        @see http://mathworld.wolfram.com/Variance.html
     */
    OOO_DLLPUBLIC_CHARTTOOLS double getVariance( const css::uno::Sequence< double > & rData );

    // square root of the variance
    OOO_DLLPUBLIC_CHARTTOOLS double getStandardDeviation( const css::uno::Sequence< double > & rData );

    // also called "Standard deviation of the mean (SDOM)"
    OOO_DLLPUBLIC_CHARTTOOLS double getStandardError( const css::uno::Sequence< double > & rData );

    OOO_DLLPUBLIC_CHARTTOOLS css::uno::Reference< css::chart2::data::XLabeledDataSequence >
        getErrorLabeledDataSequenceFromDataSource(
            const css::uno::Reference< css::chart2::data::XDataSource > & xDataSource,
            bool bPositiveValue,
            bool bYError = true );

    OOO_DLLPUBLIC_CHARTTOOLS css::uno::Reference< css::chart2::data::XDataSequence >
        getErrorDataSequenceFromDataSource(
            const css::uno::Reference< css::chart2::data::XDataSource > & xDataSource,
            bool bPositiveValue,
            bool bYError = true );

    OOO_DLLPUBLIC_CHARTTOOLS double getErrorFromDataSource(
        const css::uno::Reference< css::chart2::data::XDataSource > & xDataSource,
        sal_Int32 nIndex,
        bool bPositiveValue,
        bool bYError = true );

    OOO_DLLPUBLIC_CHARTTOOLS void setErrorDataSequence(
        const css::uno::Reference< css::chart2::data::XDataSource > & xDataSource,
        const css::uno::Reference< css::chart2::data::XDataProvider > & xDataProvider,
        const OUString & rNewRange,
        bool bPositiveValue,
        bool bYError = true,
        OUString const * pXMLRange = nullptr );

    /// @return the newly created or existing error bar object
    OOO_DLLPUBLIC_CHARTTOOLS css::uno::Reference< css::beans::XPropertySet >
        addErrorBars(
            const css::uno::Reference< css::chart2::XDataSeries > & xDataSeries,
            sal_Int32 nStyle,
            bool bYError = true );

    OOO_DLLPUBLIC_CHARTTOOLS css::uno::Reference< css::beans::XPropertySet >
        getErrorBars(
            const css::uno::Reference< css::chart2::XDataSeries > & xDataSeries,
            bool bYError = true );

    OOO_DLLPUBLIC_CHARTTOOLS bool hasErrorBars(
        const css::uno::Reference< css::chart2::XDataSeries > & xDataSeries,
        bool bYError = true );

    OOO_DLLPUBLIC_CHARTTOOLS void removeErrorBars(
        const css::uno::Reference< css::chart2::XDataSeries > & xDataSeries,
        bool bYError = true );

    OOO_DLLPUBLIC_CHARTTOOLS bool usesErrorBarRanges(
        const css::uno::Reference< css::chart2::XDataSeries > & xDataSeries,
        bool bYError = true );
}

} //  namespace chart

// INCLUDED_CHART2_SOURCE_INC_STATISTICSHELPER_HXX
#endif

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