/* -*- 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 <com/sun/star/awt/Size.hpp>
#include <com/sun/star/awt/XControlModel.hpp>
#include <com/sun/star/drawing/XControlShape.hpp>
#include <com/sun/star/text/VertOrientation.hpp>

#include <editeng/unoprnms.hxx>
#include <vcl/outdev.hxx>
#include <vcl/svapp.hxx>
#include <unotools/datetime.hxx>

#include <DomainMapper_Impl.hxx>
#include <StyleSheetTable.hxx>
#include <SdtHelper.hxx>

namespace writerfilter
{
namespace dmapper
{

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

/// w:sdt's w:dropDownList doesn't have width, so guess the size based on the longest string.
awt::Size lcl_getOptimalWidth(StyleSheetTablePtr pStyleSheet, OUString& rDefault, std::vector<OUString>& rItems)
{
    OUString aLongest = rDefault;
    sal_Int32 nHeight = 0;
    for (size_t i = 0; i < rItems.size(); ++i)
        if (rItems[i].getLength() > aLongest.getLength())
            aLongest = rItems[i];

    MapMode aMap(MAP_100TH_MM);
    OutputDevice* pOut = Application::GetDefaultDevice();
    pOut->Push(PUSH_FONT | PUSH_MAPMODE);

    PropertyMapPtr pDefaultCharProps = pStyleSheet->GetDefaultCharProps();
    Font aFont(pOut->GetFont());
    PropertyMap::iterator aFontName = pDefaultCharProps->find(PROP_CHAR_FONT_NAME);
    if (aFontName != pDefaultCharProps->end())
        aFont.SetName(aFontName->second.getValue().get<OUString>());
    PropertyMap::iterator aHeight = pDefaultCharProps->find(PROP_CHAR_HEIGHT);
    if (aHeight != pDefaultCharProps->end())
    {
        nHeight = aHeight->second.getValue().get<double>() * 35; // points -> mm100
        aFont.SetSize(Size(0, nHeight));
    }
    pOut->SetFont(aFont);
    pOut->SetMapMode(aMap);
    sal_Int32 nWidth = pOut->GetTextWidth(aLongest);

    pOut->Pop();

    // Border: see PDFWriterImpl::drawFieldBorder(), border size is font height / 4,
    // so additional width / height needed is height / 2.
    sal_Int32 nBorder = nHeight / 2;

    // Width: space for the text + the square having the dropdown arrow.
    return awt::Size(nWidth + nBorder + nHeight, nHeight + nBorder);
}

SdtHelper::SdtHelper(DomainMapper_Impl& rDM_Impl)
    : m_rDM_Impl(rDM_Impl)
    , m_bHasElements(false)
{
}

SdtHelper::~SdtHelper()
{
}

void SdtHelper::createDropDownControl()
{
    OUString aDefaultText = m_aSdtTexts.makeStringAndClear();
    uno::Reference<awt::XControlModel> xControlModel(m_rDM_Impl.GetTextFactory()->createInstance("com.sun.star.form.component.ComboBox"), uno::UNO_QUERY);
    uno::Reference<beans::XPropertySet> xPropertySet(xControlModel, uno::UNO_QUERY);
    xPropertySet->setPropertyValue("DefaultText", uno::makeAny(aDefaultText));
    xPropertySet->setPropertyValue("Dropdown", uno::makeAny(sal_True));
    uno::Sequence<OUString> aItems(m_aDropDownItems.size());
    for (size_t i = 0; i < m_aDropDownItems.size(); ++i)
        aItems[i] = m_aDropDownItems[i];
    xPropertySet->setPropertyValue("StringItemList", uno::makeAny(aItems));

    createControlShape(lcl_getOptimalWidth(m_rDM_Impl.GetStyleSheetTable(), aDefaultText, m_aDropDownItems), xControlModel);
    m_aDropDownItems.clear();
}

void SdtHelper::createDateControl(OUString& rContentText)
{
    uno::Reference<awt::XControlModel> xControlModel(m_rDM_Impl.GetTextFactory()->createInstance("com.sun.star.form.component.DateField"), uno::UNO_QUERY);
    uno::Reference<beans::XPropertySet> xPropertySet(xControlModel, uno::UNO_QUERY);

    xPropertySet->setPropertyValue("Dropdown", uno::makeAny(sal_True));

    // See com/sun/star/awt/UnoControlDateFieldModel.idl, DateFormat; sadly there are no constants
    sal_Int16 nDateFormat = 0;
    OUString sDateFormat = m_sDateFormat.makeStringAndClear();
    if (sDateFormat == "M/d/yyyy" || sDateFormat == "M.d.yyyy")
        // Approximate with MM.dd.yyy
        nDateFormat = 8;
    else
        // Set default format, so at least the date picker is created.
        SAL_WARN("writerfilter", "unhandled w:dateFormat value");
    xPropertySet->setPropertyValue("DateFormat", uno::makeAny(nDateFormat));

    util::Date aDate;
    util::DateTime aDateTime;
    if (utl::ISO8601parseDateTime(m_sDate.makeStringAndClear(), aDateTime))
    {
        utl::extractDate(aDateTime, aDate);
        xPropertySet->setPropertyValue("Date", uno::makeAny(aDate));
        xPropertySet->setPropertyValue("HelpText", uno::makeAny(OUString("Click here to enter a date")));
    }
    else
        xPropertySet->setPropertyValue("HelpText", uno::makeAny(rContentText));

    // append date format to grab bag
    uno::Sequence<beans::PropertyValue> aGrabBag(4);
    aGrabBag[0].Name = "OriginalDate";
    aGrabBag[0].Value = uno::makeAny(aDate);
    aGrabBag[1].Name = "OriginalContent";
    aGrabBag[1].Value = uno::makeAny(rContentText);
    aGrabBag[2].Name = "DateFormat";
    aGrabBag[2].Value = uno::makeAny(sDateFormat);
    aGrabBag[3].Name = "Locale";
    aGrabBag[3].Value = uno::makeAny(m_sLocale.makeStringAndClear());

    std::vector<OUString> aItems;
    createControlShape(lcl_getOptimalWidth(m_rDM_Impl.GetStyleSheetTable(), rContentText, aItems), xControlModel, aGrabBag);
}

void SdtHelper::createControlShape(awt::Size aSize, uno::Reference<awt::XControlModel> xControlModel)
{
    createControlShape(aSize, xControlModel, uno::Sequence<beans::PropertyValue>());
}

void SdtHelper::createControlShape(awt::Size aSize, uno::Reference<awt::XControlModel> xControlModel, const uno::Sequence<beans::PropertyValue>& rGrabBag)
{
    uno::Reference<drawing::XControlShape> xControlShape(m_rDM_Impl.GetTextFactory()->createInstance("com.sun.star.drawing.ControlShape"), uno::UNO_QUERY);
    xControlShape->setSize(aSize);
    xControlShape->setControl(xControlModel);

    uno::Reference<beans::XPropertySet> xPropertySet(xControlShape, uno::UNO_QUERY);
    xPropertySet->setPropertyValue("VertOrient", uno::makeAny(text::VertOrientation::CENTER));

    if (rGrabBag.hasElements())
        xPropertySet->setPropertyValue(UNO_NAME_MISC_OBJ_INTEROPGRABBAG, uno::makeAny(rGrabBag));

    uno::Reference<text::XTextContent> xTextContent(xControlShape, uno::UNO_QUERY);
    m_rDM_Impl.appendTextContent(xTextContent, uno::Sequence< beans::PropertyValue >());
    m_bHasElements = true;
}

std::vector<OUString>& SdtHelper::getDropDownItems()
{
    return m_aDropDownItems;
}

OUStringBuffer& SdtHelper::getSdtTexts()
{
    return m_aSdtTexts;
}

OUStringBuffer& SdtHelper::getDate()
{
    return m_sDate;
}

OUStringBuffer& SdtHelper::getDateFormat()
{
    return m_sDateFormat;
}

OUStringBuffer& SdtHelper::getLocale()
{
    return m_sLocale;
}


void SdtHelper::appendToInteropGrabBag(com::sun::star::beans::PropertyValue rValue)
{
    sal_Int32 nLength = m_aGrabBag.getLength();
    m_aGrabBag.realloc(nLength + 1);
    m_aGrabBag[nLength] = rValue;
}

com::sun::star::uno::Sequence<com::sun::star::beans::PropertyValue> SdtHelper::getInteropGrabBagAndClear()
{
    com::sun::star::uno::Sequence<com::sun::star::beans::PropertyValue> aRet = m_aGrabBag;
    m_aGrabBag.realloc(0);
    return aRet;
}

bool SdtHelper::isInteropGrabBagEmpty()
{
    return m_aGrabBag.getLength() == 0;
}

sal_Int32 SdtHelper::getInteropGrabBagSize()
{
    return m_aGrabBag.getLength();
}

bool SdtHelper::containedInInteropGrabBag(const OUString& rValueName)
{
    for (sal_Int32 i=0; i < m_aGrabBag.getLength(); ++i)
        if (m_aGrabBag[i].Name == rValueName)
            return true;

    return false;
}

} // namespace dmapper
} // namespace writerfilter

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