/* -*- 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/.

 *

 */

#include <memory>

#include <reffact.hxx>

#include <TableFillingAndNavigationTools.hxx>

#include <ExponentialSmoothingDialog.hxx>

#include <scresid.hxx>

#include <strings.hrc>

ScExponentialSmoothingDialog::ScExponentialSmoothingDialog(

                    SfxBindings* pSfxBindings, SfxChildWindow* pChildWindow,

                    weld::Window* pParent, ScViewData& rViewData )

    : ScStatisticsInputOutputDialog(

            pSfxBindings, pChildWindow, pParent, rViewData,

            u"modules/scalc/ui/exponentialsmoothingdialog.ui"_ustr,

            u"ExponentialSmoothingDialog"_ustr)

    , mxSmoothingFactor(m_xBuilder->weld_spin_button(u"smoothing-factor-spin"_ustr))

{

}

ScExponentialSmoothingDialog::~ScExponentialSmoothingDialog()

{

}

void ScExponentialSmoothingDialog::Close()

{

    DoClose( ScExponentialSmoothingDialogWrapper::GetChildWindowId() );

}

TranslateId ScExponentialSmoothingDialog::GetUndoNameId()

{

    return STR_EXPONENTIAL_SMOOTHING_UNDO_NAME;

}

ScRange ScExponentialSmoothingDialog::ApplyOutput(ScDocShell& rDocShell)

{

    AddressWalkerWriter output(mOutputAddress, rDocShell, mDocument,

            formula::FormulaGrammar::mergeToGrammar( formula::FormulaGrammar::GRAM_ENGLISH, mAddressDetails.eConv));

    FormulaTemplate aTemplate(&mDocument);

    // Smoothing factor

    double aSmoothingFactor = mxSmoothingFactor->get_value() / 100.0;

    // Alpha

    output.writeBoldString(ScResId(STR_LABEL_ALPHA));

    output.nextRow();

    // Alpha Value

    ScAddress aSmoothingFactorAddress = output.current();

    output.writeValue(aSmoothingFactor);

    output.nextRow();

    // Exponential Smoothing

    output.push();

    std::unique_ptr<DataRangeIterator> pIterator;

    if (mGroupedBy == BY_COLUMN)

        pIterator.reset(new DataRangeByColumnIterator(mInputRange));

    else

        pIterator.reset(new DataRangeByRowIterator(mInputRange));

    for( ; pIterator->hasNext(); pIterator->next() )

    {

        output.resetRow();

        ScRange aCurrentRange = pIterator->get();

        // Write column label

        if (mGroupedBy == BY_COLUMN)

            aTemplate.setTemplate(ScResId(STR_COLUMN_LABEL_TEMPLATE));

        else

            aTemplate.setTemplate(ScResId(STR_ROW_LABEL_TEMPLATE));

        aTemplate.applyNumber(u"%NUMBER%", pIterator->index() + 1);

        output.writeBoldString(aTemplate.getTemplate());

        output.nextRow();

        // Initial value

        if ((false))

        {

            aTemplate.setTemplate("=AVERAGE(%RANGE%)");

            aTemplate.applyRange(u"%RANGE%", aCurrentRange);

            output.writeFormula(aTemplate.getTemplate());

        }

        else

        {

            aTemplate.setTemplate("=%VAR%");

            aTemplate.applyAddress(u"%VAR%", aCurrentRange.aStart);

            output.writeFormula(aTemplate.getTemplate());

        }

        output.nextRow();

        DataCellIterator aDataCellIterator = pIterator->iterateCells();

        for (; aDataCellIterator.hasNext(); aDataCellIterator.next())

        {

            aTemplate.setTemplate("=%VALUE% * %PREVIOUS_INPUT% + (1 - %VALUE%) * %PREVIOUS_OUTPUT%");

            aTemplate.applyAddress(u"%PREVIOUS_INPUT%",  aDataCellIterator.get());

            aTemplate.applyAddress(u"%PREVIOUS_OUTPUT%", output.current(0, -1));

            aTemplate.applyAddress(u"%VALUE%",           aSmoothingFactorAddress);

            output.writeFormula(aTemplate.getTemplate());

            output.nextRow();

        }

        output.nextColumn();

    }

    return ScRange (output.mMinimumAddress, output.mMaximumAddress);

}

/* vim:set shiftwidth=4 softtabstop=4 expandtab: */