/* -*- 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 <com/sun/star/beans/XPropertySet.hpp>
#include <com/sun/star/util/XFlushable.hpp>
#include <com/sun/star/uno/XComponentContext.hpp>

#include <com/sun/star/beans/PropertyValue.hpp>

#include <com/sun/star/ui/dialogs/TemplateDescription.hpp>

#include <comphelper/propertyvalue.hxx>
#include <o3tl/string_view.hxx>
#include <comphelper/diagnose_ex.hxx>
#include <tools/urlobj.hxx>
#include <unotools/pathoptions.hxx>
#include <unotools/streamwrap.hxx>
#include <osl/file.hxx>
#include <o3tl/enumrange.hxx>
#include <vcl/svapp.hxx>
#include <vcl/weld.hxx>
#include <sfx2/filedlghelper.hxx>
#include <tools/stream.hxx>

#include <rtl/uri.hxx>

#include <algorithm>
#include <memory>

#include <strings.hrc>
#include "xmlfiltersettingsdialog.hxx"
#include "xmlfiltertabdialog.hxx"
#include "xmlfiltertestdialog.hxx"
#include "xmlfilterjar.hxx"
#include <strings.hxx>

using namespace osl;
using namespace com::sun::star::lang;
using namespace com::sun::star::uno;
using namespace com::sun::star::io;
using namespace com::sun::star::container;
using namespace com::sun::star::beans;
using namespace com::sun::star::util;

using ::rtl::Uri;

XMLFilterSettingsDialog::XMLFilterSettingsDialog(weld::Window* pParent,
        const css::uno::Reference<css::uno::XComponentContext>& rxContext)
    : GenericDialogController(pParent, u"filter/ui/xmlfiltersettings.ui"_ustr, u"XMLFilterSettingsDialog"_ustr)
    , mxContext( rxContext )
    , m_sTemplatePath(u"$(user)/template/"_ustr)
    , m_sDocTypePrefix(u"doctype:"_ustr)
    , m_xPBNew(m_xBuilder->weld_button(u"new"_ustr))
    , m_xPBEdit(m_xBuilder->weld_button(u"edit"_ustr))
    , m_xPBTest(m_xBuilder->weld_button(u"test"_ustr))
    , m_xPBDelete(m_xBuilder->weld_button(u"delete"_ustr))
    , m_xPBSave(m_xBuilder->weld_button(u"save"_ustr))
    , m_xPBOpen(m_xBuilder->weld_button(u"open"_ustr))
    , m_xPBClose(m_xBuilder->weld_button(u"close"_ustr))
    , m_xFilterListBox(m_xBuilder->weld_tree_view(u"filterlist"_ustr))
{
    m_xFilterListBox->set_selection_mode(SelectionMode::Multiple);

    m_xFilterListBox->set_size_request(m_xFilterListBox->get_approximate_digit_width() * 65,
                                       m_xFilterListBox->get_height_rows(12));

    m_xFilterListBox->connect_selection_changed(
        LINK(this, XMLFilterSettingsDialog, SelectionChangedHdl_Impl));
    m_xFilterListBox->connect_row_activated( LINK( this, XMLFilterSettingsDialog, DoubleClickHdl_Impl ) );
    m_xFilterListBox->set_accessible_name(FilterResId(STR_XML_FILTER_LISTBOX));

    m_xPBNew->connect_clicked(LINK( this, XMLFilterSettingsDialog, ClickHdl_Impl ) );
    m_xPBEdit->connect_clicked(LINK( this, XMLFilterSettingsDialog, ClickHdl_Impl ) );
    m_xPBTest->connect_clicked(LINK( this, XMLFilterSettingsDialog, ClickHdl_Impl ) );
    m_xPBDelete->connect_clicked(LINK( this, XMLFilterSettingsDialog, ClickHdl_Impl ) );
    m_xPBSave->connect_clicked(LINK( this, XMLFilterSettingsDialog, ClickHdl_Impl ) );
    m_xPBOpen->connect_clicked(LINK( this, XMLFilterSettingsDialog, ClickHdl_Impl ) );
    m_xPBClose->connect_clicked(LINK( this, XMLFilterSettingsDialog, ClickHdl_Impl ) );

    try
    {
        mxFilterContainer.set( rxContext->getServiceManager()->createInstanceWithContext( u"com.sun.star.document.FilterFactory"_ustr, rxContext ), UNO_QUERY );
        mxTypeDetection.set( rxContext->getServiceManager()->createInstanceWithContext( u"com.sun.star.document.TypeDetection"_ustr, rxContext ), UNO_QUERY );
        mxExtendedTypeDetection.set( rxContext->getServiceManager()->createInstanceWithContext( u"com.sun.star.document.ExtendedTypeDetectionFactory"_ustr, rxContext ), UNO_QUERY );

        SvtPathOptions aOptions;
        m_sTemplatePath = aOptions.SubstituteVariable( m_sTemplatePath );
    }
    catch(const Exception&)
    {
        TOOLS_WARN_EXCEPTION("filter.xslt", "");
    }
}

XMLFilterSettingsDialog::~XMLFilterSettingsDialog()
{
}

IMPL_LINK(XMLFilterSettingsDialog, ClickHdl_Impl, weld::Button&, rButton, void)
{
    // tdf#122171 block closing libreoffice until the following dialog is dismissed
    incBusy();

    if (m_xPBNew.get() == &rButton)
    {
        onNew();
    }
    else if (m_xPBEdit.get() == &rButton)
    {
        onEdit();
    }
    else if (m_xPBTest.get() == &rButton)
    {
        onTest();
    }
    else if (m_xPBDelete.get() == &rButton)
    {
        onDelete();
    }
    else if (m_xPBSave.get() == &rButton)
    {
        onSave();
    }
    else if (m_xPBOpen.get() == &rButton)
    {
        onOpen();
    }

    decBusy();

    if (m_xPBClose.get() == &rButton)
        m_xDialog->response(RET_CLOSE);
}

IMPL_LINK_NOARG(XMLFilterSettingsDialog, SelectionChangedHdl_Impl, weld::TreeView&, void)
{
    updateStates();
}

IMPL_LINK_NOARG(XMLFilterSettingsDialog, DoubleClickHdl_Impl, weld::TreeView&, bool)
{
    onEdit();
    return true;
}

void XMLFilterSettingsDialog::UpdateWindow()
{
    m_xFilterListBox->grab_focus();
    disposeFilterList();
    m_xFilterListBox->clear();
    initFilterList();
    updateStates();
}

void XMLFilterSettingsDialog::updateStates()
{
    std::vector<int> aRows = m_xFilterListBox->get_selected_rows();

    bool bHasSelection = !aRows.empty();

    bool bMultiSelection = aRows.size() > 1;
    bool bIsReadonly = false;
    bool bIsDefault = false;
    if (bHasSelection)
    {
        filter_info_impl* pInfo = weld::fromId<filter_info_impl*>(m_xFilterListBox->get_id(aRows[0]));
        bIsReadonly = pInfo->mbReadonly;

        for( auto nFact : o3tl::enumrange<SvtModuleOptions::EFactory>())
        {
            OUString sDefault = maModuleOpt.GetFactoryDefaultFilter(nFact);
            if( sDefault == pInfo->maFilterName )
            {
                bIsDefault = true;
                break;
            }
        }
    }
    m_xPBEdit->set_sensitive( bHasSelection && !bMultiSelection && !bIsReadonly);
    m_xPBTest->set_sensitive( bHasSelection && !bMultiSelection );
    m_xPBDelete->set_sensitive( bHasSelection && !bMultiSelection && !bIsReadonly && !bIsDefault);
    m_xPBSave->set_sensitive( bHasSelection );
}

/** is called when the user clicks on the "New" button */
void XMLFilterSettingsDialog::onNew()
{
    filter_info_impl aTempInfo;

    // create a unique filter name
    aTempInfo.maFilterName = createUniqueFilterName(FilterResId(STR_DEFAULT_FILTER_NAME));

    // init default extension
    aTempInfo.maExtension = STR_DEFAULT_EXTENSION;

    // set default ui name
    aTempInfo.maInterfaceName = createUniqueInterfaceName(FilterResId(STR_DEFAULT_UI_NAME));

    // set default application
    aTempInfo.maDocumentService = "com.sun.star.text.TextDocument";

    // execute XML Filter Dialog
    XMLFilterTabDialog aDlg(m_xDialog.get(), mxContext, &aTempInfo);
    if (aDlg.run() == RET_OK)
    {
        // insert the new filter
        insertOrEdit( aDlg.getNewFilterInfo() );
    }
}

/** is called when the user clicks on the "Edit" Button */
void XMLFilterSettingsDialog::onEdit()
{
    // get selected filter info
    filter_info_impl* pOldInfo = weld::fromId<filter_info_impl*>(m_xFilterListBox->get_selected_id());
    if (!pOldInfo)
        return;

    // execute XML Filter Dialog
    XMLFilterTabDialog aDlg(m_xDialog.get(), mxContext, pOldInfo);
    if (aDlg.run() == RET_OK)
    {
        filter_info_impl* pNewInfo = aDlg.getNewFilterInfo();

        if( !(*pOldInfo == *pNewInfo) )
        {
            // change filter
            insertOrEdit( pNewInfo, pOldInfo );
        }
    }
}

/** helper to create a sequence of strings from an extensions strings
    "ext1;ext2;ext3" will become { "ext1", "ext2", "ext3" } */
static Sequence< OUString > createExtensionsSequence( const OUString& rExtensions )
{
    // first count how many extensions we have inside the string
    int nExtensions = 0;

    int nLength = rExtensions.getLength();
    if( nLength )
    {
        // a non empty string has at least one extension
        nExtensions++;

        // now count the delimiters ';'
        const sal_Unicode * pString = rExtensions.getStr();
        int i;
        for( i = 0; i < nLength; i++, pString++ )
        {
            if( *pString == ';' )
                nExtensions++;
        }
    }

    Sequence< OUString > aExtensions( nExtensions );
    auto aExtensionsRange = asNonConstRange(aExtensions);

    // extract the extensions from the source string and fill the sequence

    int nLastIndex = 0;
    int nCurrentIndex = 0;
    int i;

    for( i = 0; i < nExtensions; i++ )
    {
        nLastIndex = rExtensions.indexOf( ';', nLastIndex );

        if( nLastIndex == -1 )
        {
            aExtensionsRange[i] = rExtensions.copy( nCurrentIndex );
            break;
        }
        else
        {
            aExtensionsRange[i] = rExtensions.copy( nCurrentIndex, nLastIndex - nCurrentIndex );
            nCurrentIndex = nLastIndex + 1;
            nLastIndex = nCurrentIndex;
        }
    }

    return aExtensions;
}

/** checks if the given name is unique inside the filter factory. If not,
    numbers are added until the returned name is unique */
OUString XMLFilterSettingsDialog::createUniqueFilterName( const OUString& rFilterName )
{
    OUString aFilterName( rFilterName );

    sal_Int32 nId = 2;

    while( mxFilterContainer->hasByName( aFilterName ) )
    {
        aFilterName = rFilterName + " " + OUString::number( nId++ );
    }

    return aFilterName;
}

/** checks if the given name is unique inside the type detection. If not,
    numbers are added until the returned name is unique */
OUString XMLFilterSettingsDialog::createUniqueTypeName( const OUString& rTypeName )
{
    OUString aTypeName( rTypeName );

    sal_Int32 nId = 2;

    while( mxFilterContainer->hasByName( aTypeName ) )
    {
        aTypeName = rTypeName + " " + OUString::number( nId++ );
    }

    return aTypeName;
}

/** checks if the given name is a unique ui name inside the filter factory. If not,
    numbers are added until the returned name is unique */
OUString XMLFilterSettingsDialog::createUniqueInterfaceName( const OUString& rInterfaceName )
{
    sal_Int32 nDefaultNumber = 0;

    try
    {
        const Sequence< OUString > aFilterNames( mxFilterContainer->getElementNames() );

        Sequence< PropertyValue > aValues;
        for( OUString const & filterName : aFilterNames)
        {
            Any aAny( mxFilterContainer->getByName( filterName ) );
            if( !(aAny >>= aValues) )
                continue;

            const sal_Int32 nValueCount( aValues.getLength() );
            PropertyValue* pValues = aValues.getArray();
            sal_Int32 nValue;

            for( nValue = 0; nValue < nValueCount; nValue++, pValues++ )
            {
                if ( pValues->Name == "UIName" )
                {
                    OUString aInterfaceName;
                    pValues->Value >>= aInterfaceName;


                    // see if this filter matches our default filter name
                    if( aInterfaceName.match( rInterfaceName ) )
                    {
                        // if yes, make sure we generate a unique name with a higher number
                        // this is dump but fast
                        sal_Int32 nNumber = o3tl::toInt32(aInterfaceName.subView( rInterfaceName.getLength() ));
                        if( nNumber >= nDefaultNumber )
                            nDefaultNumber = nNumber + 1;
                    }
                }
            }
        }
    }
    catch( const Exception& )
    {
        TOOLS_WARN_EXCEPTION("filter.xslt", "");
    }

    OUString aInterfaceName( rInterfaceName );
    if( nDefaultNumber )
    {
        aInterfaceName += " " + OUString::number( nDefaultNumber );
    }

    return aInterfaceName;
}

/** inserts a new filter into the ui and configuration if pOldInfo is NULL.
    If pOldInfo is not null, the old filter will be replaced with the new settings */
bool XMLFilterSettingsDialog::insertOrEdit( filter_info_impl* pNewInfo, const filter_info_impl* pOldInfo )
{
    bool bOk = true;

    if( pOldInfo )
    {
        // see if we need to update the type name
        if( pOldInfo->maFilterName != pNewInfo->maFilterName )
        {
            if( pOldInfo->maType == pOldInfo->maFilterName )
            {
                pNewInfo->maType.clear();
            }
        }

        // see if we need to clean up old stuff first
        try
        {
            // if filter name changed, we need to remove the old filter first
            if( pOldInfo->maFilterName != pNewInfo->maFilterName )
                mxFilterContainer->removeByName( pOldInfo->maFilterName );

            // if type name changed, we need to remove the old type first
            if( pOldInfo->maType != pNewInfo->maType )
                mxTypeDetection->removeByName( pOldInfo->maType );
        }
        catch( const Exception& )
        {
            TOOLS_WARN_EXCEPTION("filter.xslt", "");
            bOk = false;
        }
    }

    filter_info_impl* pFilterEntry( nullptr );

    if( bOk )
    {
        // create or copy filter info
        if( pOldInfo )
        {
            // change existing filter entry in filter list box
            pFilterEntry = const_cast<filter_info_impl*>(pOldInfo);
            *pFilterEntry = *pNewInfo;
        }
        else
        {
            // add new entry to filter list box
            pFilterEntry = new filter_info_impl( *pNewInfo );
        }
    }

    // check if we need to copy the template
    if( bOk && !pFilterEntry->maImportTemplate.isEmpty() )
    {
        if( !pFilterEntry->maImportTemplate.matchIgnoreAsciiCase( m_sTemplatePath ) )
        {
            INetURLObject aSourceURL( pFilterEntry->maImportTemplate );
            if (!aSourceURL.GetLastName().isEmpty())
            {
                OUString aDestURL = m_sTemplatePath + pFilterEntry->maFilterName + "/";
                if( createDirectory( aDestURL ) )
                {
                    aDestURL += aSourceURL.GetLastName();

                    SvFileStream aInputStream(pFilterEntry->maImportTemplate, StreamMode::READ );
                    Reference< XInputStream > xIS( new utl::OInputStreamWrapper( aInputStream ) );
                    SvFileStream aOutputStream(aDestURL, StreamMode::WRITE );
                    Reference< XOutputStream > xOS(  new utl::OOutputStreamWrapper( aOutputStream ) );

                    if( copyStreams( xIS, xOS ) )
                        pFilterEntry->maImportTemplate = aDestURL;
                }
            }
        }
    }

    if( bOk )
    {
        if( pFilterEntry->maType.isEmpty() )
        {
            pFilterEntry->maType = createUniqueTypeName( pNewInfo->maFilterName );
        }

        // update import/export flags
        if( !pFilterEntry->maImportXSLT.isEmpty() )
        {
            pFilterEntry->maFlags |= 1;
        }
        else
        {
            pFilterEntry->maFlags &= ~1;
        }

        if( !pFilterEntry->maExportXSLT.isEmpty() )
        {
            pFilterEntry->maFlags |= 2;
        }
        else
        {
            pFilterEntry->maFlags &= ~2;
        }
        pFilterEntry->maFlags |= 0x80040;

        // 2. create user data for filter entry
        Sequence< OUString > aUserData( pFilterEntry->getFilterUserData());

        // 3. create property values for filter entry
        Sequence< PropertyValue > aFilterData{
            comphelper::makePropertyValue(u"Type"_ustr, pFilterEntry->maType),
            comphelper::makePropertyValue(u"UIName"_ustr, pFilterEntry->maInterfaceName),
            comphelper::makePropertyValue(u"DocumentService"_ustr, pFilterEntry->maDocumentService),
            comphelper::makePropertyValue(u"FilterService"_ustr, u"com.sun.star.comp.Writer.XmlFilterAdaptor"_ustr),
            comphelper::makePropertyValue(u"Flags"_ustr, pFilterEntry->maFlags),
            comphelper::makePropertyValue(u"UserData"_ustr, aUserData),
            comphelper::makePropertyValue(u"FileFormatVersion"_ustr, pFilterEntry->maFileFormatVersion),
            comphelper::makePropertyValue(u"TemplateName"_ustr, pFilterEntry->maImportTemplate)
        };

        // 4. insert new or replace existing filter
        try
        {
            Any aAny( aFilterData );
            if( mxFilterContainer->hasByName( pFilterEntry->maFilterName ) )
            {
                mxFilterContainer->replaceByName( pFilterEntry->maFilterName, aAny );
            }
            else
            {
                mxFilterContainer->insertByName( pFilterEntry->maFilterName, aAny );
            }
        }
        catch( const Exception& )
        {
            TOOLS_WARN_EXCEPTION("filter.xslt", "");
            bOk = false;
        }
    }

    // 5. prepare type information
    if( bOk )
    {
        OUString aDocType;
        if( !pFilterEntry->maDocType.match( m_sDocTypePrefix ) )
        {
            aDocType = m_sDocTypePrefix + pFilterEntry->maDocType;
        }
        else
        {
            aDocType = pFilterEntry->maDocType;
        }
        if (aDocType == m_sDocTypePrefix)
            aDocType.clear();

        Sequence< PropertyValue > aValues{
            comphelper::makePropertyValue(u"UIName"_ustr, pFilterEntry->maInterfaceName),
            comphelper::makePropertyValue(u"ClipboardFormat"_ustr, aDocType),
            comphelper::makePropertyValue(u"DocumentIconID"_ustr, pFilterEntry->mnDocumentIconID),
            comphelper::makePropertyValue(u"Extensions"_ustr, createExtensionsSequence( pFilterEntry->maExtension ))
        };

        // the detect service will only be registered, if a doctype/search token was specified
        if (aDocType.getLength() > m_sDocTypePrefix.getLength())
        {
            aValues.realloc(5);
            auto pValues = aValues.getArray();
            pValues[4].Name = "DetectService";
            pValues[4].Value <<= u"com.sun.star.comp.filters.XMLFilterDetect"_ustr;
        }

        // 6. insert new or replace existing type information
        if( mxTypeDetection.is() )
        {
            try
            {
                Any aAny( aValues );
                if( mxTypeDetection->hasByName( pFilterEntry->maType ) )
                {
                    mxTypeDetection->replaceByName( pFilterEntry->maType, aAny );
                }
                else
                {
                    mxTypeDetection->insertByName( pFilterEntry->maType, aAny );
                }
            }
            catch( const Exception& )
            {
                TOOLS_WARN_EXCEPTION("filter.xslt", "");
                bOk = false;
            }
        }

        if( bOk )
        {
            try
            {
                Reference< XFlushable > xFlushable( mxTypeDetection, UNO_QUERY );
                if( xFlushable.is() )
                    xFlushable->flush();
            }
            catch( const Exception& )
            {
                TOOLS_WARN_EXCEPTION("filter.xslt", "");
                bOk = false;
            }
        }

        if( !bOk )
        {
            // we failed to add the type, so let's remove the filter
            try
            {
                mxFilterContainer->removeByName( pFilterEntry->maFilterName );
            }
            catch( const Exception& )
            {
                TOOLS_WARN_EXCEPTION("filter.xslt", "");
                bOk = false;
            }
        }
        else // bOk
        {
            try
            {
                Reference< XFlushable > xFlushable( mxFilterContainer, UNO_QUERY );
                if( xFlushable.is() )
                    xFlushable->flush();
            }
            catch( const Exception& )
            {
                TOOLS_WARN_EXCEPTION("filter.xslt", "");
                bOk = false;
            }

            if( !bOk )
            {
                // we failed to add the filter, so let's remove the type
                try
                {
                    mxTypeDetection->removeByName( pFilterEntry->maType );
                }
                catch( const Exception& )
                {
                    TOOLS_WARN_EXCEPTION("filter.xslt", "");
                }

            }
        }
    }

    if( bOk )
    {
        if( mxExtendedTypeDetection.is() )
        {
            OUString sFilterDetectService( u"com.sun.star.comp.filters.XMLFilterDetect"_ustr );
            if( mxExtendedTypeDetection->hasByName( sFilterDetectService ) )
            {
                Sequence< PropertyValue > aSequence;
                if( mxExtendedTypeDetection->getByName( sFilterDetectService ) >>= aSequence )
                {
                    auto aSequenceRange = asNonConstRange(aSequence);
                    sal_Int32 nCount = aSequence.getLength();
                    sal_Int32 nIndex;
                    for( nIndex = 0; nIndex < nCount; nIndex++ )
                    {
                        if ( aSequence[nIndex].Name == "Types" )
                        {
                            Sequence< OUString > aTypes;
                            if( aSequence[nIndex].Value >>= aTypes )
                            {
                                sal_Int32 nStrCount = aTypes.getLength();
                                sal_Int32 nStr;
                                for( nStr = 0; nStr < nStrCount; nStr++ )
                                {
                                    if( aTypes[nStr] == pFilterEntry->maType )
                                        break;
                                }

                                if( nStr == nStrCount )
                                {
                                    aTypes.realloc( nStrCount + 1 );
                                    aTypes.getArray()[nStrCount] = pFilterEntry->maType;

                                    aSequenceRange[nIndex].Value <<= aTypes;

                                    mxExtendedTypeDetection->replaceByName( sFilterDetectService, Any( aSequence ) );

                                    Reference< XFlushable > xFlushable( mxExtendedTypeDetection, UNO_QUERY );
                                    if( xFlushable.is() )
                                        xFlushable->flush();
                                }
                            }

                            break;
                        }
                    }
                }
            }
        }
    }

    // update ui
    if( bOk )
    {
        if( pOldInfo )
        {
            changeEntry( pFilterEntry );
        }
        else
        {
            addFilterEntry( pFilterEntry );
            maFilterVector.push_back( std::unique_ptr<filter_info_impl>(pFilterEntry) );
        }
    }

    return bOk;
}

/** is called when the user clicks the "Test" button */
void XMLFilterSettingsDialog::onTest()
{
    // get the first selected filter
    filter_info_impl* pInfo = weld::fromId<filter_info_impl*>(m_xFilterListBox->get_selected_id());
    if (pInfo)
    {
        XMLFilterTestDialog aDlg(m_xDialog.get(), mxContext);
        aDlg.test( *pInfo );
    }
}

void XMLFilterSettingsDialog::onDelete()
{
    int nIndex = m_xFilterListBox->get_selected_index();
    if (nIndex == -1)
        return;
    filter_info_impl* pInfo = weld::fromId<filter_info_impl*>(m_xFilterListBox->get_id(nIndex));
    if (pInfo)
    {
        OUString aMessage(FilterResId(STR_WARN_DELETE));
        aMessage = aMessage.replaceFirst( "%s", pInfo->maFilterName );

        std::unique_ptr<weld::MessageDialog> xWarn(Application::CreateMessageDialog(m_xDialog.get(),
                                                   VclMessageType::Warning, VclButtonsType::YesNo,
                                                   aMessage));
        xWarn->set_default_response(RET_YES);
        if (xWarn->run() == RET_YES)
        {
            try
            {
                if( mxFilterContainer->hasByName( pInfo->maFilterName ) )
                {
                    mxFilterContainer->removeByName( pInfo->maFilterName );

                    bool bTypeStillUsed = false;

                    // now loop over all filter and see if someone else uses the same type
                    Sequence< OUString > aFilterNames( mxFilterContainer->getElementNames() );
                    OUString* pFilterName = aFilterNames.getArray();

                    const sal_Int32 nCount = aFilterNames.getLength();
                    sal_Int32 nFilter;
                    Sequence< PropertyValue > aValues;

                    for( nFilter = 0; (nFilter < nCount) && !bTypeStillUsed; nFilter++, pFilterName++ )
                    {
                        Any aAny( mxFilterContainer->getByName( *pFilterName ) );
                        if( !(aAny >>= aValues) )
                            continue;

                        const sal_Int32 nValueCount( aValues.getLength() );
                        PropertyValue* pValues = aValues.getArray();
                        sal_Int32 nValue;

                        for (nValue = 0; nValue < nValueCount; nValue++, pValues++)
                        {
                            if ( pValues->Name == "Type" )
                            {
                                OUString aType;
                                pValues->Value >>= aType;
                                if( aType == pInfo->maType )
                                    bTypeStillUsed = true;

                                break;
                            }
                        }
                    }

                    // if the type is not used anymore, remove it also
                    if( !bTypeStillUsed )
                    {
                        if( mxTypeDetection->hasByName( pInfo->maType ) )
                        {
                            mxTypeDetection->removeByName( pInfo->maType );
                        }
                    }

                    Reference< XFlushable > xFlushable( mxFilterContainer, UNO_QUERY );
                    if( xFlushable.is() )
                        xFlushable->flush();

                    xFlushable.set( mxTypeDetection, UNO_QUERY );
                    if( xFlushable.is() )
                        xFlushable->flush();

                    // now remove entry from ui
                    m_xFilterListBox->remove(nIndex);

                    // and delete the filter entry
                    maFilterVector.erase(std::find_if( maFilterVector.begin(), maFilterVector.end(),
                                            [&] (std::unique_ptr<filter_info_impl> const & p)
                                            { return p.get() == pInfo; }));
                }
            }
            catch( const Exception& )
            {
                TOOLS_WARN_EXCEPTION("filter.xslt", "");
            }
        }
    }

    updateStates();
}

void XMLFilterSettingsDialog::onSave()
{
    std::vector<filter_info_impl*> aFilters;

    int nFilters = 0;

    m_xFilterListBox->selected_foreach([&](weld::TreeIter& rEntry){
        filter_info_impl* pInfo = weld::fromId<filter_info_impl*>(m_xFilterListBox->get_id(rEntry));
        aFilters.push_back(pInfo);
        ++nFilters;
        return false;
    });

    // Open Fileopen-Dialog
    ::sfx2::FileDialogHelper aDlg(
        css::ui::dialogs::TemplateDescription::FILESAVE_AUTOEXTENSION,
        FileDialogFlags::NONE, m_xDialog.get());
    aDlg.SetContext(sfx2::FileDialogHelper::XMLFilterSettings);

    OUString aExtensions( u"*.jar"_ustr );
    OUString aFilterName = FilterResId(STR_FILTER_PACKAGE) +
        " (" + aExtensions + ")";

    aDlg.AddFilter( aFilterName, aExtensions );

    if ( aDlg.Execute() != ERRCODE_NONE )
        return;

    XMLFilterJarHelper aJarHelper( mxContext );
    aJarHelper.savePackage( aDlg.GetPath(), aFilters );

    INetURLObject aURL( aDlg.GetPath() );

    OUString sPlaceholder( u"%s"_ustr );

    OUString aMsg;
    if( nFilters > 0 )
    {
        aMsg = FilterResId(STR_FILTERS_HAVE_BEEN_SAVED);
        aMsg = aMsg.replaceFirst( sPlaceholder, OUString::number( nFilters ) );
        aMsg = aMsg.replaceFirst(sPlaceholder, aURL.GetLastName());
    }
    else
    {
        aMsg = FilterResId(STR_FILTER_HAS_BEEN_SAVED);
        aMsg = aMsg.replaceFirst( sPlaceholder, (*aFilters.begin())->maFilterName );
        aMsg = aMsg.replaceFirst(sPlaceholder, aURL.GetLastName());
    }

    std::unique_ptr<weld::MessageDialog> xInfoBox(Application::CreateMessageDialog(m_xDialog.get(),
                                                  VclMessageType::Info, VclButtonsType::Ok,
                                                  aMsg));
    xInfoBox->run();
}

void XMLFilterSettingsDialog::onOpen()
{
    std::vector< std::unique_ptr<filter_info_impl> > aFilters;

    // Open Fileopen-Dialog
    ::sfx2::FileDialogHelper aDlg(
    css::ui::dialogs::TemplateDescription::FILEOPEN_SIMPLE,
    FileDialogFlags::NONE, m_xDialog.get());
    aDlg.SetContext(sfx2::FileDialogHelper::XMLFilterSettings);

    OUString aExtensions( u"*.jar"_ustr );
    OUString aFilterName = FilterResId(STR_FILTER_PACKAGE) +
        " (" + aExtensions + ")";

    aDlg.AddFilter( aFilterName, aExtensions );

    if ( aDlg.Execute() != ERRCODE_NONE )
        return;

    OUString aURL( aDlg.GetPath() );

    XMLFilterJarHelper aJarHelper( mxContext );
    aJarHelper.openPackage( aURL, aFilters );

    int nFilters = 0;
    for (auto& filter : aFilters)
    {
        if( insertOrEdit(filter.get()) )
        {
            aFilterName = filter->maFilterName;
            nFilters++;
        }

        filter.reset();
    }

    disposeFilterList();
    initFilterList();

    OUString sPlaceholder( u"%s"_ustr );
    OUString aMsg;
    if( nFilters == 0 )
    {
        INetURLObject aURLObj( aURL );
        aMsg = FilterResId(STR_NO_FILTERS_FOUND);
        aMsg = aMsg.replaceFirst(sPlaceholder, aURLObj.GetLastName());
    }
    else if( nFilters == 1 )
    {
        aMsg = FilterResId(STR_FILTER_INSTALLED);
        aMsg = aMsg.replaceFirst( sPlaceholder, aFilterName );

    }
    else
    {
        aMsg = FilterResId(STR_FILTERS_INSTALLED);
        aMsg = aMsg.replaceFirst( sPlaceholder, OUString::number( nFilters ) );
    }

    std::unique_ptr<weld::MessageDialog> xInfoBox(Application::CreateMessageDialog(m_xDialog.get(),
                                                  VclMessageType::Info, VclButtonsType::Ok,
                                                  aMsg));
    xInfoBox->run();
}

void XMLFilterSettingsDialog::disposeFilterList()
{
    maFilterVector.clear();
    m_xFilterListBox->clear();
}

void XMLFilterSettingsDialog::initFilterList()
{
    if( mxFilterContainer.is() )
    {
        const Sequence< OUString > aFilterNames( mxFilterContainer->getElementNames() );

        Sequence< PropertyValue > aValues;

        std::unique_ptr<filter_info_impl> pTempFilter( new filter_info_impl );
        Sequence< OUString > aUserData;

        for( OUString const & filterName : aFilterNames )
        {
            aUserData.realloc(0);

            try
            {
                Any aAny( mxFilterContainer->getByName( filterName ) );
                if( !(aAny >>= aValues) )
                    continue;

                OUString aFilterService;
                pTempFilter->maFilterName = filterName;

                const sal_Int32 nValueCount( aValues.getLength() );
                PropertyValue* pValues = aValues.getArray();
                sal_Int32 nValue;

                for( nValue = 0; nValue < nValueCount; nValue++, pValues++ )
                {
                    if ( pValues->Name == "Type" )
                    {
                        pValues->Value >>= pTempFilter->maType;
                    }
                    else if ( pValues->Name == "UIName" )
                    {
                        pValues->Value >>= pTempFilter->maInterfaceName;
                    }
                    else if ( pValues->Name == "DocumentService" )
                    {
                        pValues->Value >>= pTempFilter->maDocumentService;
                    }
                    else if ( pValues->Name == "FilterService" )
                    {
                        pValues->Value >>= aFilterService;
                    }
                    else if ( pValues->Name == "Flags" )
                    {
                        pValues->Value >>= pTempFilter->maFlags;
                    }
                    else if ( pValues->Name == "UserData" )
                    {
                        pValues->Value >>= aUserData;
                    }
                    else if ( pValues->Name == "FileFormatVersion" )
                    {
                        pValues->Value >>= pTempFilter->maFileFormatVersion;
                    }
                    else if ( pValues->Name == "TemplateName" )
                    {
                        pValues->Value >>= pTempFilter->maImportTemplate;
                    }
                    else if ( pValues->Name == "Finalized" )
                    {
                        pValues->Value >>= pTempFilter->mbReadonly;
                    }
                }

                // if this is not a XmlFilterAdaptor entry, skip it
                if( aFilterService != "com.sun.star.comp.Writer.XmlFilterAdaptor" )
                    continue;


                // if we don't have the needed user data, skip it
                if( aUserData.getLength() < 6 )
                    continue;

                // if this is not an XSLTFilter entry, skip it
                if( aUserData[0] != "com.sun.star.documentconversion.XSLTFilter" )
                    continue;

                // get filter information from userdata
                pTempFilter->mbNeedsXSLT2 = aUserData[1].toBoolean();
                pTempFilter->maImportService = aUserData[2];
                pTempFilter->maExportService = aUserData[3];
                pTempFilter->maImportXSLT = aUserData[4];
                pTempFilter->maExportXSLT = aUserData[5];
                if( aUserData.getLength() >= 8 )
                    pTempFilter->maComment = aUserData[7];

                // get type information
                if( mxTypeDetection.is() )
                {
                    try
                    {
                        aAny = mxTypeDetection->getByName( pTempFilter->maType );
                        Sequence< PropertyValue > aValues2;

                        if( aAny >>= aValues2 )
                        {
                            const sal_Int32 nValueCount2( aValues2.getLength() );
                            PropertyValue* pValues2 = aValues2.getArray();
                            sal_Int32 nValue2;

                            for( nValue2 = 0; nValue2 < nValueCount2; nValue2++, pValues2++ )
                            {
                                if ( pValues2->Name == "ClipboardFormat" )
                                {
                                    OUString aDocType;
                                    pValues2->Value >>= aDocType;

                                    if( aDocType.match( m_sDocTypePrefix ) )
                                        aDocType = aDocType.copy( m_sDocTypePrefix.getLength() );

                                    pTempFilter->maDocType = aDocType;
                                }
                                else if ( pValues2->Name == "Extensions" )
                                {
                                    Sequence< OUString > aExtensions;
                                    if( pValues2->Value >>= aExtensions )
                                    {
                                        pTempFilter->maExtension.clear();

                                        sal_Int32 nCount3( aExtensions.getLength() );
                                        OUString* pExtensions = aExtensions.getArray();
                                        sal_Int32 n;
                                        for( n = 0; n < nCount3; n++ )
                                        {
                                            if( n > 0 )
                                                pTempFilter->maExtension += ";";
                                            pTempFilter->maExtension += *pExtensions++;
                                        }
                                    }
                                }
                                else if ( pValues2->Name == "DocumentIconID" )
                                {
                                    pValues2->Value >>= pTempFilter->mnDocumentIconID;
                                }
                                else if ( pValues2->Name == "Finalized" )
                                {
                                    // both the filter and the type may be finalized
                                    bool bTemp = false;
                                    pValues2->Value >>= bTemp;
                                    pTempFilter->mbReadonly |= bTemp;
                                }
                            }
                        }
                    }
                    catch( const css::container::NoSuchElementException& )
                    {
                        OSL_FAIL( "Type not found, user error?" ); // TODO: error?
                    }
                }

                // add entry to internal container and to ui filter list box
                maFilterVector.push_back(std::move(pTempFilter));
                addFilterEntry(maFilterVector.back().get());

                pTempFilter.reset( new filter_info_impl );
            }
            catch( const Exception& )
            {
                TOOLS_WARN_EXCEPTION("filter.xslt", "");
            }

        }
    }

    if (m_xFilterListBox->n_children())
    {
        m_xFilterListBox->columns_autosize();
        m_xFilterListBox->select(0);
    }
}

application_info_impl::application_info_impl( const OUString& rDocumentService, const OUString& rUINameRes, const OUString& rXMLImporter, const OUString& rXMLExporter )
:   maDocumentService( rDocumentService ),
    maDocumentUIName(Translate::ExpandVariables(rUINameRes)),
    maXMLImporter( rXMLImporter ),
    maXMLExporter( rXMLExporter )
{
}

std::vector< application_info_impl > const & getApplicationInfos()
{
    static std::vector< application_info_impl > const aInfos
    {
        {   u"com.sun.star.text.TextDocument"_ustr,
            STR_APPL_NAME_WRITER,
            u"com.sun.star.comp.Writer.XMLImporter"_ustr,
            u"com.sun.star.comp.Writer.XMLExporter"_ustr },

        {   u"com.sun.star.sheet.SpreadsheetDocument"_ustr,
            STR_APPL_NAME_CALC,
            u"com.sun.star.comp.Calc.XMLImporter"_ustr,
            u"com.sun.star.comp.Calc.XMLExporter"_ustr },

        {   u"com.sun.star.presentation.PresentationDocument"_ustr,
            STR_APPL_NAME_IMPRESS,
            u"com.sun.star.comp.Impress.XMLImporter"_ustr,
            u"com.sun.star.comp.Impress.XMLExporter"_ustr },

        {   u"com.sun.star.drawing.DrawingDocument"_ustr,
            STR_APPL_NAME_DRAW,
            u"com.sun.star.comp.Draw.XMLImporter"_ustr,
            u"com.sun.star.comp.Draw.XMLExporter"_ustr },

        // --- oasis file formats...
        {   u"com.sun.star.text.TextDocument"_ustr,
            STR_APPL_NAME_OASIS_WRITER,
            u"com.sun.star.comp.Writer.XMLOasisImporter"_ustr,
            u"com.sun.star.comp.Writer.XMLOasisExporter"_ustr },

        {   u"com.sun.star.sheet.SpreadsheetDocument"_ustr,
            STR_APPL_NAME_OASIS_CALC,
            u"com.sun.star.comp.Calc.XMLOasisImporter"_ustr,
            u"com.sun.star.comp.Calc.XMLOasisExporter"_ustr },

        {   u"com.sun.star.presentation.PresentationDocument"_ustr,
            STR_APPL_NAME_OASIS_IMPRESS,
            u"com.sun.star.comp.Impress.XMLOasisImporter"_ustr,
            u"com.sun.star.comp.Impress.XMLOasisExporter"_ustr },

        {  u"com.sun.star.drawing.DrawingDocument"_ustr,
            STR_APPL_NAME_OASIS_DRAW,
            u"com.sun.star.comp.Draw.XMLOasisImporter"_ustr,
            u"com.sun.star.comp.Draw.XMLOasisExporter"_ustr },
    };

    return aInfos;
}

const application_info_impl* getApplicationInfo( std::u16string_view rServiceName )
{
    std::vector< application_info_impl > const & rInfos = getApplicationInfos();
    for (auto const& info : rInfos)
    {
        if( rServiceName == info.maXMLExporter ||
            rServiceName == info.maXMLImporter)
        {
            return &info;
        }
    }
    return nullptr;
}

OUString getApplicationUIName( std::u16string_view rServiceName )
{
    const application_info_impl* pInfo = getApplicationInfo( rServiceName );
    if( pInfo )
    {
        return pInfo->maDocumentUIName;
    }
    else
    {
        OUString aRet = FilterResId(STR_UNKNOWN_APPLICATION);
        if( !rServiceName.empty() )
        {
            aRet += OUString::Concat(" (") + rServiceName + ")";
        }
        return aRet;
    }
}

/** adds a new filter info entry to the ui filter list */
void XMLFilterSettingsDialog::addFilterEntry( const filter_info_impl* pInfo )
{
    int nRow = m_xFilterListBox->n_children();
    OUString sId(weld::toId(pInfo));
    m_xFilterListBox->append(sId, pInfo->maFilterName);
    m_xFilterListBox->set_text(nRow, getEntryString(pInfo), 1);
}

void XMLFilterSettingsDialog::changeEntry( const filter_info_impl* pInfo )
{
    const int nCount = m_xFilterListBox->n_children();
    for(int nPos = 0; nPos < nCount; ++nPos)
    {
        filter_info_impl* pEntry = weld::fromId<filter_info_impl*>(m_xFilterListBox->get_id(nPos));
        if (pEntry == pInfo)
        {
            m_xFilterListBox->set_text(nPos, pInfo->maFilterName, 0);
            m_xFilterListBox->set_text(nPos, getEntryString(pInfo), 1);
            break;
        }
    }
}

OUString XMLFilterSettingsDialog::getEntryString( const filter_info_impl* pInfo )
{
    OUString aEntryStr;
    if ( !pInfo->maExportService.isEmpty() )
        aEntryStr = getApplicationUIName( pInfo->maExportService );
    else
        aEntryStr = getApplicationUIName( pInfo->maImportService );
    aEntryStr += " - ";

    if( pInfo->maFlags & 1 )
    {
        if( pInfo->maFlags & 2 )
        {
            aEntryStr += FilterResId(STR_IMPORT_EXPORT);
        }
        else
        {
            aEntryStr += FilterResId(STR_IMPORT_ONLY);
        }
    }
    else if( pInfo->maFlags & 2 )
    {
        aEntryStr += FilterResId(STR_EXPORT_ONLY);
    }
    else
    {
        aEntryStr += FilterResId(STR_UNDEFINED_FILTER);
    }

    return aEntryStr;
}

filter_info_impl::filter_info_impl()
    : maFlags(0x00080040)
    , maFileFormatVersion(0)
    , mnDocumentIconID(0)
    , mbReadonly(false)
    , mbNeedsXSLT2(false)
{
}

bool filter_info_impl::operator==( const filter_info_impl& r ) const
{
    return maFilterName == r.maFilterName &&
        maType == r.maType &&
        maDocumentService == r.maDocumentService &&
        maInterfaceName == r.maInterfaceName &&
        maComment == r.maComment &&
        maExtension == r.maExtension &&
        maDocType == r.maDocType &&
        maExportXSLT == r.maExportXSLT &&
        maImportXSLT == r.maImportXSLT &&
        maExportService == r.maExportService &&
        maImportService == r.maImportService &&
        maImportTemplate == r.maImportTemplate &&
        maFlags == r.maFlags &&
        maFileFormatVersion == r.maFileFormatVersion &&
        mbNeedsXSLT2 == r.mbNeedsXSLT2;
}


Sequence< OUString > filter_info_impl::getFilterUserData() const
{
    return
    {
        u"com.sun.star.documentconversion.XSLTFilter"_ustr,
        OUString::boolean( mbNeedsXSLT2 ),
        maImportService,
        maExportService,
        maImportXSLT,
        maExportXSLT,
        maComment
    };
}

OUString string_encode( const OUString & rText )
{
    static constexpr auto uricNoSlash = rtl::createUriCharClass(
        u8"!$&'()*+-.0123456789:=?@ABCDEFGHIJKLMNOPQRSTUVWXYZ_abcdefghijklmnopqrstuvwxyz~");


    return
        Uri::encode( rText, uricNoSlash.data(), rtl_UriEncodeCheckEscapes, RTL_TEXTENCODING_UTF8 );
}

OUString string_decode( const OUString & rText )
{
    return Uri::decode( rText, rtl_UriDecodeWithCharset, RTL_TEXTENCODING_UTF8 );
}

bool copyStreams( const Reference< XInputStream >& xIS, const Reference< XOutputStream >& xOS )
{
    try
    {
        sal_Int32 nBufferSize = 512;
        Sequence< sal_Int8 > aDataBuffer(nBufferSize);

        sal_Int32 nRead;
        do
        {
            nRead = xIS->readBytes( aDataBuffer, nBufferSize );

            if( nRead )
            {
                if( nRead < nBufferSize )
                {
                    nBufferSize = nRead;
                    aDataBuffer.realloc(nRead);
                }

                xOS->writeBytes( aDataBuffer );
            }
        }
        while( nRead );

        xOS->flush();

        return true;
    }
    catch(const Exception&)
    {
        TOOLS_WARN_EXCEPTION("filter.xslt", "");
    }

    return false;
}

bool createDirectory( std::u16string_view rURL )
{
    size_t nLastIndex = sizeof( "file:///" ) - 2;
    while( nLastIndex != std::u16string_view::npos )
    {
        nLastIndex = rURL.find( '/', nLastIndex + 1);
        if( nLastIndex != std::u16string_view::npos )
        {
            OUString aDirURL( rURL.substr( 0, nLastIndex ) );
            Directory aDir( aDirURL );
            Directory::RC rc = aDir.open();
            if( rc == Directory::E_NOENT )
                rc = osl::Directory::create( aDirURL );

            if( rc != Directory::E_None )
            {
                return false;
            }
        }
    }

    return true;
}

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