/* This file is part of the KDE project
   Copyright (C) 2005-2017 Jarosław Staniek <staniek@kde.org>
   Copyright (C) 2012 Oleg Kukharchuk <oleg.kuh@gmail.com>

   This work is based on kspread/dialogs/kspread_dlg_csv.cc.

   Copyright (C) 2002-2003 Norbert Andres <nandres@web.de>
   Copyright (C) 2002-2003 Ariya Hidayat <ariya@kde.org>
   Copyright (C) 2002 Laurent Montel <montel@kde.org>
   Copyright (C) 1999 David Faure <faure@kde.org>

   This library is free software; you can redistribute it and/or
   modify it under the terms of the GNU Library General Public
   License as published by the Free Software Foundation; either
   version 2 of the License, or (at your option) any later version.

   This library is distributed in the hope that it will be useful,
   but WITHOUT ANY WARRANTY; without even the implied warranty of
   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
   Library General Public License for more details.

   You should have received a copy of the GNU Library General Public License
   along with this library; see the file COPYING.LIB.  If not, write to
   the Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor,
 * Boston, MA 02110-1301, USA.
*/

#include "kexicsvimportdialog.h"
#include "KexiCSVImportDialogModel.h"
#include <KexiIcon.h>
#include <kexiutils/utils.h>
#include <core/kexi.h>
#include <core/kexiproject.h>
#include <core/kexipart.h>
#include <core/kexipartinfo.h>
#include <core/kexipartmanager.h>
#include <core/KexiMainWindowIface.h>
#include <core/kexiguimsghandler.h>
#include <core/KexiWindow.h>
#include <widget/kexicharencodingcombobox.h>
#include <widget/KexiNameWidget.h>
#include <widget/navigator/KexiProjectNavigator.h>
#include <widget/navigator/KexiProjectTreeView.h>
#include <widget/fields/KexiFieldListView.h>
#include <widget/fields/KexiFieldListModel.h>
#include <widget/KexiFileWidgetInterface.h>
#include "kexicsvwidgets.h"
#include <kexi_global.h>

#include <KDbObjectNameValidator>
#include <KDbConnection>
#include <KDbTableOrQuerySchema>
#include <KDbTransactionGuard>

#include <KMessageBox>
#include <KCharsets>
#include <KLocalizedString>
#include <KConfigGroup>
#include <KSharedConfig>
#include <KGuiItem>

#include <QDir>
#include <QSpinBox>
#include <QCheckBox>
#include <QClipboard>
#include <QLabel>
#include <QLineEdit>
#include <QPushButton>
#include <QHeaderView>
#include <QTableView>
#include <QTextCodec>
#include <QTimer>
#include <QFontMetrics>
#include <QVBoxLayout>
#include <QKeyEvent>
#include <QEvent>
#include <QTextStream>
#include <QGridLayout>
#include <QFormLayout>
#include <QPixmap>
#include <QStackedWidget>
#include <QSplitter>
#include <QTreeView>
#include <QApplication>
#include <QStyledItemDelegate>
#include <QProgressDialog>
#include <QProgressBar>
#include <QDialog>
#include <QDebug>
#include <QRadioButton>

#define _IMPORT_ICON koIconNeededWithSubs("change to file_import or so", "file_import","table")

//! @internal An item delegate for KexiCSVImportDialog's table view
class KexiCSVImportDialogItemDelegate : public QStyledItemDelegate
{
    Q_OBJECT
public:
    KexiCSVImportDialogItemDelegate(QObject *parent = 0);

    virtual QWidget* createEditor(QWidget *parent, const QStyleOptionViewItem &option,
                                  const QModelIndex &index) const;
};

KexiCSVImportDialogItemDelegate::KexiCSVImportDialogItemDelegate(QObject *parent)
    : QStyledItemDelegate(parent)
{
}

QWidget* KexiCSVImportDialogItemDelegate::createEditor(QWidget *parent,
                                                       const QStyleOptionViewItem &option,
                                                       const QModelIndex &index) const
{
    QStyleOptionViewItem newOption(option);
    QWidget *editor = QStyledItemDelegate::createEditor(parent, newOption, index);
    if (editor && index.row() == 0) {
        QFont f(editor->font());
        f.setBold(true);
        editor->setFont(f);
    }
    return editor;
}

// --

//! @internal
class KexiCSVImportStatic
{
public:
    KexiCSVImportStatic()
     : types(QVector<KDbField::Type>()
        << KDbField::Text
        << KDbField::Integer
        << KDbField::Double
        << KDbField::Boolean
        << KDbField::Date
        << KDbField::Time
        << KDbField::DateTime)
    {
        typeNames.insert(KDbField::Text, KDbField::typeGroupName(KDbField::TextGroup));
        typeNames.insert(KDbField::Integer, KDbField::typeGroupName(KDbField::IntegerGroup));
        typeNames.insert(KDbField::Double, KDbField::typeGroupName(KDbField::FloatGroup));
        typeNames.insert(KDbField::Boolean, KDbField::typeName(KDbField::Boolean));
        typeNames.insert(KDbField::Date, KDbField::typeName(KDbField::Date));
        typeNames.insert(KDbField::Time, KDbField::typeName(KDbField::Time));
        typeNames.insert(KDbField::DateTime, KDbField::typeName(KDbField::DateTime));
        for (int i = 0; i < types.size(); ++i) {
            indicesForTypes.insert(types[i], i);
        }
    }

    const QVector<KDbField::Type> types;
    QHash<KDbField::Type, QString> typeNames;
    QHash<KDbField::Type, int> indicesForTypes;
};

Q_GLOBAL_STATIC(KexiCSVImportStatic, kexiCSVImportStatic)

#define MAX_ROWS_TO_PREVIEW 100 //max 100 rows is reasonable
#define MAX_BYTES_TO_PREVIEW 10240 //max 10KB is reasonable
#define MAX_CHARS_TO_SCAN_WHILE_DETECTING_DELIMITER 4096
#define MINIMUM_YEAR_FOR_100_YEAR_SLIDING_WINDOW 1930
#define PROGRESS_STEP_MS (1000/5) // 5 updates per second

static bool shouldSaveRow(int row, bool firstRowForFieldNames)
{
    return row > (firstRowForFieldNames ? 1 : 0);
}

// --

class Q_DECL_HIDDEN KexiCSVImportDialog::Private
{
public:
    Private()
        : imported(false)
    {
    }
    ~Private() {
        qDeleteAll(m_uniquenessTest);
    }

    void clearDetectedTypes() {
        m_detectedTypes.clear();
    }

    void clearUniquenessTests() {
        qDeleteAll(m_uniquenessTest);
        m_uniquenessTest.clear();
    }

    KDbField::Type detectedType(int col) const
    {
        return m_detectedTypes.value(col, KDbField::InvalidType);
    }

    void setDetectedType(int col, KDbField::Type type)
    {
        if (m_detectedTypes.count() <= col) {
            for (int i = m_detectedTypes.count(); i < col; ++i) { // append missing bits
                m_detectedTypes.append(KDbField::InvalidType);
            }
            m_detectedTypes.append(type);
        }
        else {
            m_detectedTypes[col] = type;
        }
    }

    QList<int>* uniquenessTest(int col) const
    {
        return m_uniquenessTest.value(col);
    }

    void setUniquenessTest(int col, QList<int>* test)
    {
        if (m_uniquenessTest.count() <= col) {
            for (int i = m_uniquenessTest.count(); i < col; ++i) { // append missing bits
                m_uniquenessTest.append(0);
            }
            m_uniquenessTest.append(test);
        }
        else {
            m_uniquenessTest[col] = test;
        }
    }

    bool imported;
private:
    //! vector of detected types
    //! @todo more types
    QList<KDbField::Type> m_detectedTypes;

    //! m_detectedUniqueColumns[i]==true means that i-th column has unique values
    //! (only for numeric type)
    QList< QList<int>* > m_uniquenessTest;
};

// --

KexiCSVImportDialog::KexiCSVImportDialog(Mode mode, QWidget * parent)
        : KAssistantDialog(parent),
        m_parseComments(false),
        m_canceled(false),
        m_adjustRows(true),
        m_startline(0),
        m_textquote(QString(KEXICSV_DEFAULT_FILE_TEXT_QUOTE)[0]),
        m_commentSymbol(QString(KEXICSV_DEFAULT_COMMENT_START)[0]),
        m_mode(mode),
        m_columnsAdjusted(false),
        m_firstFillTableCall(true),
        m_blockUserEvents(false),
        m_primaryKeyColumn(-1),
        m_dialogCanceled(false),
        m_conn(0),
        m_fieldsListModel(0),
        m_destinationTableSchema(0),
        m_implicitPrimaryKeyAdded(false),
        m_allRowsLoadedInPreview(false),
        m_stoppedAt_MAX_BYTES_TO_PREVIEW(false),
        m_stringNo("no"),
        m_stringI18nNo(xi18n("no")),
        m_stringFalse("false"),
        m_stringI18nFalse(xi18n("false")),
        m_partItemForSavedTable(0),
        m_importInProgress(false),
        m_importCanceled(false),
        d(new Private)
{
    setWindowTitle( mode == File
        ? xi18nc("@title:window", "Import CSV Data From File")
        : xi18nc("@title:window", "Paste CSV Data From Clipboard") );
    setWindowIcon(_IMPORT_ICON);
//! @todo use "Paste CSV Data From Clipboard" caption for mode==Clipboard
    setObjectName("KexiCSVImportDialog");
    setSizeGripEnabled(true);
    KexiMainWindowIface::global()->setReasonableDialogSize(this);

    KGuiItem::assign(configureButton(), KStandardGuiItem::configure());

    KGuiItem::assign(finishButton(), KGuiItem(xi18nc("@action:button Import CSV", "&Import..."), _IMPORT_ICON));
    finishButton()->setEnabled(false);
    backButton()->setEnabled(false);

    KConfigGroup importExportGroup(KSharedConfig::openConfig()->group("ImportExport"));
    m_maximumRowsForPreview = importExportGroup.readEntry(
                                  "MaximumRowsForPreviewInImportDialog", MAX_ROWS_TO_PREVIEW);
    m_maximumBytesForPreview = importExportGroup.readEntry(
                                   "MaximumBytesForPreviewInImportDialog", MAX_BYTES_TO_PREVIEW);
    m_minimumYearFor100YearSlidingWindow = importExportGroup.readEntry(
        "MinimumYearFor100YearSlidingWindow", MINIMUM_YEAR_FOR_100_YEAR_SLIDING_WINDOW);

    m_pkIcon = KexiSmallIcon("database-key");

    if (m_mode == File) {
        createFileOpenPage();
    } else if (m_mode == Clipboard) {
        QString subtype("plain");
        m_clipboardData = QApplication::clipboard()->text(subtype, QClipboard::Clipboard);
        /* debug
            for (int i=0;QApplication::clipboard()->data(QClipboard::Clipboard)->format(i);i++)
              qDebug() << i << ": "
                << QApplication::clipboard()->data(QClipboard::Clipboard)->format(i);
        */

    } else {
        return;
    }


    m_file = 0;
    m_inputStream = 0;

    createOptionsPage();
    createImportMethodPage();
    createTableNamePage();
    createImportPage();

    /** @todo reuse Clipboard too! */

    /*if ( m_mode == Clipboard )
      {
      setWindowTitle( xi18n( "Inserting From Clipboard" ) );
      QMimeSource * mime = QApplication::clipboard()->data();
      if ( !mime )
      {
        KMessageBox::information( this, xi18n("There is no data in the clipboard.") );
        m_canceled = true;
        return;
      }

      if ( !mime->provides( "text/plain" ) )
      {
        KMessageBox::information( this, xi18n("There is no usable data in the clipboard.") );
        m_canceled = true;
        return;
      }
      m_fileArray = QByteArray(mime->encodedData( "text/plain" ) );
      }
      else if ( mode == File )
      {*/
    m_dateRegExp = QRegularExpression("^(\\d{1,4})([/\\-\\.])(\\d{1,2})([/\\-\\.])(\\d{1,4})$");
    m_timeRegExp1 = QRegularExpression("^(\\d{1,2}):(\\d{1,2}):(\\d{1,2})$");
    m_timeRegExp2 = QRegularExpression("^(\\d{1,2}):(\\d{1,2})$");
    m_fpNumberRegExp1 = QRegularExpression("^[\\-]{0,1}\\d*[,\\.]\\d+$");
    // E notation, e.g. 0.1e2, 0.1e+2, 0.1e-2, 0.1E2, 0.1E+2, 0.1E-2
    m_fpNumberRegExp2 = QRegularExpression("^[\\-]{0,1}\\d*[,\\.]\\d+[Ee][+-]{0,1}\\d+$");
    m_loadingProgressDlg = 0;
    if (m_mode == Clipboard) {
        m_infoLbl->setIcon(koIconName("edit-paste"));
    }
    m_tableView->setSelectionMode(QAbstractItemView::SingleSelection);

    connect(m_formatCombo, SIGNAL(activated(int)),
            this, SLOT(formatChanged(int)));
    connect(m_delimiterWidget, SIGNAL(delimiterChanged(QString)),
            this, SLOT(delimiterChanged(QString)));
    connect(m_commentWidget, SIGNAL(commentSymbolChanged(QString)),
            this, SLOT(commentSymbolChanged(QString)));
    connect(m_startAtLineSpinBox, SIGNAL(valueChanged(int)),
            this, SLOT(startlineSelected(int)));
    connect(m_comboQuote, SIGNAL(activated(int)),
            this, SLOT(textquoteSelected(int)));
    connect(m_tableView->selectionModel(), SIGNAL(currentChanged(QModelIndex,QModelIndex)),
            this, SLOT(currentCellChanged(QModelIndex,QModelIndex)));
    connect(m_ignoreDuplicates, SIGNAL(stateChanged(int)),
            this, SLOT(ignoreDuplicatesChanged(int)));
    connect(m_1stRowForFieldNames, SIGNAL(stateChanged(int)),
            this, SLOT(slot1stRowForFieldNamesChanged(int)));

    connect(configureButton(), &QPushButton::clicked, this, &KexiCSVImportDialog::optionsButtonClicked);

    connect(this, SIGNAL(currentPageChanged(KPageWidgetItem*,KPageWidgetItem*)),
            this, SLOT(slotCurrentPageChanged(KPageWidgetItem*,KPageWidgetItem*)));

    KexiUtils::installRecursiveEventFilter(this, this);
    if ( m_mode == Clipboard )
        initLater();
}

KexiCSVImportDialog::~KexiCSVImportDialog()
{
    delete m_file;
    delete m_inputStream;
    delete d;
}

void KexiCSVImportDialog::next()
{
    KPageWidgetItem *curPage = currentPage();

    if (curPage == m_openFilePage) {
        if (m_fileIface->checkSelectedFile()) {
            m_fname = m_fileIface->selectedFile();
        } else {
            return;
        }
        if (!openData()) {
            return;
        }
    } else if (curPage == m_optionsPage) {
        const int numRows(m_table->rowCount());
        if (numRows == 0)
            return; //impossible

        if (numRows == 1) {
            if (KMessageBox::No == KMessageBox::questionYesNo(this,
                xi18n("Data set contains no rows. Do you want to import empty table?")))
            return;
        }
    } else if (curPage == m_saveMethodPage) {
        if (m_newTableOption->isChecked()) {
            m_tableNameWidget->setCurrentIndex(0);
            m_newTableWidget->setFocus();
        } else {
            m_tableNameWidget->setCurrentIndex(1);
            m_tablesList->setFocus();
        }
    } else if (curPage == m_tableNamePage) {
        KexiGUIMessageHandler msg;
        KexiProject *project = KexiMainWindowIface::global()->project();
        if (!project) {
            msg.showErrorMessage(KDbMessageHandler::Error, xi18n("No project available."));
            return;
        }

        m_conn = project->dbConnection();
        if (!m_conn) {
            msg.showErrorMessage(KDbMessageHandler::Error, xi18n("No database connection available."));
            return;
        }
        if (m_newTableOption->isChecked()) {
            m_partItemForSavedTable->setCaption(m_newTableWidget->captionText());
            m_partItemForSavedTable->setName(m_newTableWidget->nameText());

            KexiPart::Part *part = Kexi::partManager().partForPluginId("org.kexi-project.table");
            KDbObject tmp;
            tristate res = (part && part->info()) ? m_conn->loadObjectData(
                    project->typeIdForPluginId(part->info()->pluginId()),
                    m_newTableWidget->nameText(),
                    &tmp)
                                                  : false;
            if (res == true) {
                KMessageBox::information(this,
                        "<p>"
                        + part->i18nMessage("Object <resource>%1</resource> already exists.", 0)
                        .subs(m_newTableWidget->nameText()).toString()
                        + "</p><p>" + xi18n("Please choose other name.") + "</p>"
                        );
                return;
            } else if (res == false) {
                qFatal("Plugin org.kexi-project.table not found");
                return;
            }
        } else {
            m_partItemForSavedTable = m_tablesList->selectedPartItem();
        }
    }
    KAssistantDialog::next();
}

void KexiCSVImportDialog::slotShowSchema(KexiPart::Item *item)
{
    if (!item) {
        return;
    }

    nextButton()->setEnabled(true);
    KDbConnection *conn = KexiMainWindowIface::global()->project()->dbConnection();
    KDbTableOrQuerySchema *tableOrQuery = new KDbTableOrQuerySchema(conn, item->identifier());
    m_tableCaptionLabel->setText(tableOrQuery->captionOrName());
    m_tableNameLabel->setText(tableOrQuery->name());
    m_recordCountLabel->setText(QString::number(conn->recordCount(tableOrQuery)));
    m_colCountLabel->setText(QString::number(tableOrQuery->fieldCount(conn)));

    delete m_fieldsListModel;
    m_fieldsListModel = new KexiFieldListModel(m_fieldsListView, ShowDataTypes);
    m_fieldsListModel->setSchema(conn, tableOrQuery);
    m_fieldsListView->setModel(m_fieldsListModel);
    m_fieldsListView->header()->resizeSections(QHeaderView::ResizeToContents);
}

void KexiCSVImportDialog::slotCurrentPageChanged(KPageWidgetItem *page, KPageWidgetItem *prev)
{
    nextButton()->setEnabled(page == m_saveMethodPage ? false : true);
    finishButton()->setEnabled(page == m_importPage ? true : false);
    configureButton()->setEnabled(page == m_optionsPage);
    nextButton()->setEnabled(page == m_importPage ? false : true);
    backButton()->setEnabled(page == m_openFilePage ? false : true);

    if (page == m_saveMethodPage && prev == m_tableNamePage && m_partItemForSavedTable) {
        if (m_newTableOption->isChecked()) {
            KexiMainWindowIface::global()->project()->deleteUnstoredItem(m_partItemForSavedTable);
        }
        m_partItemForSavedTable = 0;
    }
    if(page == m_optionsPage){
        if (m_mode == File) {
            m_loadingProgressDlg = new QProgressDialog(this);
            m_loadingProgressDlg->setObjectName("m_loadingProgressDlg");
            m_loadingProgressDlg->setLabelText(
                    xi18nc("@info", "Loading CSV Data from <filename>%1</filename>...",
                           QDir::toNativeSeparators(m_fname)));
            m_loadingProgressDlg->setWindowTitle(xi18nc("@title:window", "Loading CSV Data"));
            m_loadingProgressDlg->setModal(true);
            m_loadingProgressDlg->setMaximum(m_maximumRowsForPreview);
            m_loadingProgressDlg->show();
        }
        // delimiterChanged(detectedDelimiter); // this will cause fillTable()
        m_detectDelimiter = true;
        m_columnsAdjusted = false;
        fillTable();
        delete m_loadingProgressDlg;
        m_loadingProgressDlg = 0;
        if (m_dialogCanceled) {
            // m_loadingProgressDlg->hide();
            // m_loadingProgressDlg->close();
            QTimer::singleShot(0, this, SLOT(reject()));
            return;
        }

        currentCellChanged(m_table->index(0,0), QModelIndex());

        if (m_loadingProgressDlg)
            m_loadingProgressDlg->hide();
        m_tableView->setFocus();
    } else if (page == m_saveMethodPage) {
        m_newTableOption->setFocus();
    } else if (page == m_tableNamePage) {
        if (m_newTableOption->isChecked() && !m_partItemForSavedTable) {
            KexiGUIMessageHandler msg;
            KexiProject *project = KexiMainWindowIface::global()->project();
            //get suggested name based on the file name
            QString suggestedName;
            if (m_mode == File) {
                suggestedName = QUrl(m_fname).fileName();
                //remove extension
                if (!suggestedName.isEmpty()) {
                    const int idx = suggestedName.lastIndexOf('.');
                    if (idx != -1) {
                         suggestedName = suggestedName.mid(0, idx).simplified();
                    }
                }
            }
            KexiPart::Part *part = Kexi::partManager().partForPluginId("org.kexi-project.table");
            if (!part) {
                msg.showErrorMessage(Kexi::partManager().result());
                return;
            }
            //-new part item
            m_partItemForSavedTable = project->createPartItem(part->info(), suggestedName);
            if (!m_partItemForSavedTable) {
                 msg.showErrorMessage(project->result());
                 return;
            }
            m_newTableWidget->setCaptionText(m_partItemForSavedTable->caption());
            m_newTableWidget->setNameText(m_partItemForSavedTable->name());
            m_newTableWidget->captionLineEdit()->setFocus();
            m_newTableWidget->captionLineEdit()->selectAll();
        } else if (!m_newTableOption->isChecked()) {
            KexiPart::Item *i = m_tablesList->selectedPartItem();
            if (!i) {
                nextButton()->setEnabled(false);
            }
            slotShowSchema(i);
        }
    } else if (page == m_importPage) {
        m_fromLabel->setFileName(m_fname);
        m_toLabel->setFileNameText(m_partItemForSavedTable->name());
        m_importingProgressBar->hide();
        m_importProgressLabel->hide();

    }
 }

void KexiCSVImportDialog::createFileOpenPage()
{
    m_fileIface = KexiFileWidgetInterface::createWidget(QUrl("kfiledialog:///CSVImportExport"),
                                                        KexiFileFilters::CustomOpening, this);
    m_fileIface->setAdditionalMimeTypes(csvMimeTypes());
    m_fileIface->setDefaultExtension("csv");
    m_fileIface->connectFileSelectedSignal(this, SLOT(next()));
    m_openFilePage = new KPageWidgetItem(m_fileIface->widget(), xi18n("Select Import Filename"));
    addPage(m_openFilePage);
}

void KexiCSVImportDialog::createOptionsPage()
{
    QWidget *m_optionsWidget = new QWidget(this);
    QVBoxLayout *lyr = new QVBoxLayout(m_optionsWidget);

    m_infoLbl = new KexiCSVInfoLabel(
        m_mode == File ? xi18n("Preview of data from file:")
        : xi18n("Preview of data from clipboard"),
        m_optionsWidget, m_mode == File /*showFnameLine*/
    );
    lyr->addWidget(m_infoLbl);

    QWidget* page = new QFrame(m_optionsWidget);
    QGridLayout *glyr = new QGridLayout(page);
    lyr->addWidget(page);

    // Delimiter: comma, semicolon, tab, space, other
    m_delimiterWidget = new KexiCSVDelimiterWidget(true /*lineEditOnBottom*/, page);
    glyr->addWidget(m_delimiterWidget, 1, 0, 1, 1);

    QLabel *delimiterLabel = new QLabel(xi18n("Delimiter:"), page);
    delimiterLabel->setBuddy(m_delimiterWidget);
    delimiterLabel->setAlignment(Qt::AlignLeft | Qt::AlignBottom);
    glyr->addWidget(delimiterLabel, 0, 0, 1, 1);

    m_commentWidget = new KexiCSVCommentWidget(true, page);
    glyr->addWidget(m_commentWidget, 1, 4);

    QLabel *commentLabel = new QLabel(xi18n("Comment symbol:"), page);
    commentLabel->setBuddy(m_commentWidget);
    commentLabel->setAlignment(Qt::AlignLeft | Qt::AlignBottom);
    glyr->addWidget(commentLabel, 0, 4);

    // Format: number, text...
//! @todo Object and Currency types
    m_formatCombo = new KComboBox(page);
    m_formatCombo->setObjectName("m_formatCombo");

    for (int i = 0; i < kexiCSVImportStatic->types.size(); ++i) {
        m_formatCombo->addItem(kexiCSVImportStatic->typeNames.value(kexiCSVImportStatic->types[i]));
    }

    glyr->addWidget(m_formatCombo, 1, 1, 1, 1);

    m_formatLabel = new QLabel(page);
    m_formatLabel->setBuddy(m_formatCombo);
    m_formatLabel->setAlignment(Qt::AlignLeft | Qt::AlignBottom);
    glyr->addWidget(m_formatLabel, 0, 1);

    m_primaryKeyField = new QCheckBox(xi18n("Primary key"), page);
    m_primaryKeyField->setObjectName("m_primaryKeyField");
    glyr->addWidget(m_primaryKeyField, 2, 1);
    connect(m_primaryKeyField, SIGNAL(toggled(bool)), this, SLOT(slotPrimaryKeyFieldToggled(bool)));

    m_comboQuote = new KexiCSVTextQuoteComboBox(page);
    glyr->addWidget(m_comboQuote, 1, 2);

    TextLabel2 = new QLabel(xi18n("Text quote:"), page);
    TextLabel2->setBuddy(m_comboQuote);
    TextLabel2->setObjectName("TextLabel2");
    TextLabel2->setSizePolicy(QSizePolicy::Fixed, QSizePolicy::Preferred);
    TextLabel2->setAlignment(Qt::AlignLeft | Qt::AlignBottom);
    glyr->addWidget(TextLabel2, 0, 2);

    m_startAtLineSpinBox = new QSpinBox(page);
    m_startAtLineSpinBox->setObjectName("m_startAtLineSpinBox");
    m_startAtLineSpinBox->setMinimum(1);
    m_startAtLineSpinBox->setSizePolicy(QSizePolicy::Fixed, QSizePolicy::Fixed);
    m_startAtLineSpinBox->setMinimumWidth(
        QFontMetrics(m_startAtLineSpinBox->font()).width("8888888"));
    glyr->addWidget(m_startAtLineSpinBox, 1, 3);

    m_startAtLineLabel = new QLabel(page);
    m_startAtLineLabel->setBuddy(m_startAtLineSpinBox);
    m_startAtLineLabel->setObjectName("m_startAtLineLabel");
    m_startAtLineLabel->setSizePolicy(QSizePolicy::Fixed, QSizePolicy::Preferred);
    m_startAtLineLabel->setAlignment(Qt::AlignLeft | Qt::AlignBottom);
    glyr->addWidget(m_startAtLineLabel, 0, 3);

    m_ignoreDuplicates = new QCheckBox(page);
    m_ignoreDuplicates->setObjectName("m_ignoreDuplicates");
    m_ignoreDuplicates->setText(xi18n("Ignore duplicated delimiters"));
    glyr->addWidget(m_ignoreDuplicates, 2, 2, 1, 2);

    m_1stRowForFieldNames = new QCheckBox(page);
    m_1stRowForFieldNames->setObjectName("m_1stRowForFieldNames");
    m_1stRowForFieldNames->setText(xi18n("First row contains column names"));
    glyr->addWidget(m_1stRowForFieldNames, 3, 2, 1, 2);

    QSpacerItem* spacer_2 = new QSpacerItem(0, 0, QSizePolicy::Minimum, QSizePolicy::Preferred);
    glyr->addItem(spacer_2, 0, 5, 4, 1);
    glyr->setColumnStretch(5, 2);

    m_tableView = new QTableView(m_optionsWidget);
    m_table = new KexiCSVImportDialogModel(m_tableView);
    m_table->setObjectName("m_table");
    m_tableView->setModel(m_table);
    m_tableItemDelegate = new KexiCSVImportDialogItemDelegate(m_tableView);
    m_tableView->setItemDelegate(m_tableItemDelegate);
    lyr->addWidget(m_tableView);

    QSizePolicy spolicy(QSizePolicy::MinimumExpanding, QSizePolicy::MinimumExpanding);
    spolicy.setHorizontalStretch(1);
    spolicy.setVerticalStretch(1);
    m_tableView->setSizePolicy(spolicy);

    m_optionsPage = new KPageWidgetItem(m_optionsWidget, xi18n("Import Options"));
    addPage(m_optionsPage);
}

void KexiCSVImportDialog::createImportMethodPage()
{
    m_saveMethodWidget = new QWidget(this);
    QGridLayout *l = new QGridLayout(m_saveMethodWidget);

    m_newTableOption = new QRadioButton(
        xi18nc("@option:check CSV import: data will be appended to a new table", "&New table"));
    m_newTableOption->setChecked(true);
    m_existingTableOption = new QRadioButton(
        xi18nc("@option:check CSV import: data will be appended to existing table", "&Existing table"));
    l->addWidget(m_newTableOption, 0, 0, 1, 1);
    l->addWidget(m_existingTableOption, 1, 0, 1, 1);

    QSpacerItem *hSpacer = new QSpacerItem(200, 20, QSizePolicy::Preferred, QSizePolicy::Minimum);
    QSpacerItem *vSpacer = new QSpacerItem(20, 200, QSizePolicy::Minimum, QSizePolicy::Expanding);

    l->addItem(hSpacer, 1, 1, 1, 1);
    l->addItem(vSpacer, 2, 0, 1, 1);

    m_saveMethodPage = new KPageWidgetItem(m_saveMethodWidget, xi18n("Choose Destination for Imported Data"));
    addPage(m_saveMethodPage);
}

void KexiCSVImportDialog::createTableNamePage()
{
    m_tableNameWidget = new QStackedWidget(this);
    m_tableNameWidget->setObjectName("m_tableNameWidget");
    QWidget *page1=new QWidget(m_tableNameWidget);
    m_newTableWidget = new KexiNameWidget(QString(), page1);
    m_newTableWidget->addNameSubvalidator(new KDbObjectNameValidator(
                KexiMainWindowIface::global()->project()->dbConnection()->driver()));
    QVBoxLayout *l=new QVBoxLayout(page1);
    l->addWidget(m_newTableWidget);
    l->addStretch(1);
    m_tableNameWidget->addWidget(page1);

    QSplitter *splitter = new QSplitter(m_tableNameWidget);

    QWidget *tablesListParentWidget = new QWidget;
    QVBoxLayout *tablesListParentWidgetLayout = new QVBoxLayout(tablesListParentWidget);
    tablesListParentWidgetLayout->setMargin(0);
    QLabel *tablesListLabel = new QLabel(xi18nc("@label", "Select existing table:"));
    tablesListParentWidgetLayout->addWidget(tablesListLabel);

    KexiProjectNavigator::Features tablesListFeatures = KexiProjectNavigator::DefaultFeatures;
    tablesListFeatures &= (~KexiProjectNavigator::AllowSingleClickForOpeningItems);
    tablesListFeatures &= (~KexiProjectNavigator::ClearSelectionAfterAction);
    tablesListFeatures |= KexiProjectNavigator::Borders;
    m_tablesList = new KexiProjectNavigator(tablesListParentWidget, tablesListFeatures);
    tablesListParentWidgetLayout->addWidget(m_tablesList, 1);
    tablesListLabel->setBuddy(m_tablesList);
    QString errorString;
    m_tablesList->setProject(KexiMainWindowIface::global()->project(), "org.kexi-project.table", &errorString, false);
    connect (m_tablesList, SIGNAL(openOrActivateItem(KexiPart::Item*,Kexi::ViewMode)),
            this, SLOT(next()));
    connect (m_tablesList, SIGNAL(selectionChanged(KexiPart::Item*)),
            this, SLOT(slotShowSchema(KexiPart::Item*)));
    splitter->addWidget(tablesListParentWidget);

    QWidget *tableDetailsWidget = new QWidget;
    QFormLayout *formLayout = new QFormLayout(tableDetailsWidget);
    formLayout->setContentsMargins(KexiUtils::marginHint(), 0, 0, 0);
    formLayout->addRow(new QLabel(xi18nc("@label Preview of selected table", "Table preview:")));
    formLayout->addRow(xi18nc("@label", "Name:"),
                       m_tableNameLabel = new QLabel(tableDetailsWidget));
    formLayout->addRow(xi18nc("@label", "Caption:"),
                       m_tableCaptionLabel = new QLabel(tableDetailsWidget));
    formLayout->addRow(xi18nc("@label", "Row count:"),
                       m_recordCountLabel = new QLabel(tableDetailsWidget));
    formLayout->addRow(xi18nc("@label", "Column count:"),
                       m_colCountLabel = new QLabel(tableDetailsWidget));
    formLayout->addItem(new QSpacerItem(1, KexiUtils::spacingHint()));

    m_fieldsListView = new QTreeView(tableDetailsWidget);
    m_fieldsListView->setItemsExpandable(false);
    m_fieldsListView->setRootIsDecorated(false);
    QSizePolicy fieldsListViewPolicy(QSizePolicy::Minimum, QSizePolicy::Minimum);
    fieldsListViewPolicy.setVerticalStretch(1);
    m_fieldsListView->setSizePolicy(fieldsListViewPolicy);
    formLayout->addRow(new QLabel(xi18nc("@label", "Fields:")));
    formLayout->addRow(m_fieldsListView);

    splitter->addWidget(tableDetailsWidget);
    splitter->setStretchFactor(splitter->indexOf(tableDetailsWidget), 1);
    m_tableNameWidget->addWidget(splitter);
    m_tableNamePage = new KPageWidgetItem(m_tableNameWidget, xi18nc("@label", "Choose Name of Destination Table"));
    addPage(m_tableNamePage);
}

void KexiCSVImportDialog::createImportPage()
{

    m_importWidget = new QWidget(this);
    m_fromLabel = new KexiCSVInfoLabel(m_mode == File ? xi18n("From CSV file:") : xi18n("From Clipboard"), m_importWidget, m_mode == File);
    m_fromLabel->separator()->hide();
    if (m_mode != File) {
        m_fromLabel->setIcon(koIconName("edit-paste"));
    }
    m_toLabel = new KexiCSVInfoLabel(xi18nc("@label Importing CSV data to table:", "To table:"), m_importWidget, true);
    KexiPart::Info *partInfo = Kexi::partManager().infoForPluginId("org.kexi-project.table");
    m_toLabel->setIcon(partInfo->iconName());

    m_importProgressLabel = new QLabel(m_importWidget);
    m_importingProgressBar = new QProgressBar(m_importWidget);
    QVBoxLayout *l = new QVBoxLayout(m_importWidget);
    l->addWidget(m_fromLabel);
    l->addWidget(m_toLabel);
    l->addSpacing(m_importProgressLabel->fontMetrics().height());
    l->addWidget(m_importProgressLabel);
    l->addWidget(m_importingProgressBar);
    l->addStretch(1);
    m_importingProgressBar->hide();
    m_importProgressLabel->hide();
    m_importPage = new KPageWidgetItem(m_importWidget, xi18n("Ready to Import"));
    addPage(m_importPage);
}

void KexiCSVImportDialog::initLater()
{
    if (!openData())
        return;

    m_columnsAdjusted = false;
    fillTable();
    delete m_loadingProgressDlg;
    m_loadingProgressDlg = 0;
    if (m_dialogCanceled) {
        QTimer::singleShot(0, this, SLOT(reject()));
        return;
    }

    currentCellChanged(m_table->index(0,0), QModelIndex());

    if (m_loadingProgressDlg)
        m_loadingProgressDlg->hide();
    show();
    m_tableView->setFocus();
}

bool KexiCSVImportDialog::openData()
{
    if (m_mode != File) //data already loaded, no encoding stuff needed
        return true;

    delete m_inputStream;
    m_inputStream = 0;
    if (m_file) {
        m_file->close();
        delete m_file;
    }
    m_file = new QFile(m_fname);
    if (!m_file->open(QIODevice::ReadOnly)) {
        m_file->close();
        delete m_file;
        m_file = 0;
        KMessageBox::sorry(this, xi18n("Cannot open input file <filename>%1</filename>.",
                                      QDir::toNativeSeparators(m_fname)));
        nextButton()->setEnabled(false);
        m_canceled = true;
        if (parentWidget())
            parentWidget()->raise();
        return false;
    }
    return true;
}

bool KexiCSVImportDialog::canceled() const
{
    return m_canceled;
}

void KexiCSVImportDialog::fillTable()
{
    KexiUtils::WaitCursor wc(true);
    repaint();
    m_blockUserEvents = true;
    button(QDialogButtonBox::Cancel)->setEnabled(true);
    KexiUtils::WaitCursor wait;

    if (m_table->rowCount() > 0) //to accept editor
        m_tableView->setCurrentIndex(QModelIndex());

    int row, column, maxColumn;
    QString field;

    m_table->clear();
    d->clearDetectedTypes();
    d->clearUniquenessTests();
    m_primaryKeyColumn = -1;

    if (true != loadRows(field, row, column, maxColumn, true))
        return;

    // file with only one line without EOL
    if (field.length() > 0) {
        setText(row - m_startline, column, field, true);
        ++row;
        field.clear();
    }

    adjustRows(row - m_startline - (m_1stRowForFieldNames->isChecked() ? 1 : 0));

    maxColumn = qMax(maxColumn, column);
    m_table->setColumnCount(maxColumn);

    for (column = 0; column < m_table->columnCount(); ++column) {
        updateColumn(column);
        if (!m_columnsAdjusted)
            m_tableView->resizeColumnToContents(column);
    }
    m_columnsAdjusted = true;

    if (m_primaryKeyColumn >= 0 && m_primaryKeyColumn < m_table->columnCount()) {
        if (KDbField::Integer != d->detectedType(m_primaryKeyColumn)) {
            setPrimaryKeyIcon(m_primaryKeyColumn, false);
            m_primaryKeyColumn = -1;
        }
    }

    m_tableView->setCurrentIndex(m_table->index(0, 0));
    currentCellChanged(m_table->index(0, 0), QModelIndex());
    setPrimaryKeyIcon(m_primaryKeyColumn, true);

    const int count = qMax(0, m_table->rowCount() - 1 + m_startline);
    m_allRowsLoadedInPreview = count < m_maximumRowsForPreview && !m_stoppedAt_MAX_BYTES_TO_PREVIEW;
    if (count > 1) {
        if (m_allRowsLoadedInPreview) {
            m_startAtLineSpinBox->setMaximum(count);
            m_startAtLineSpinBox->setValue(m_startline + 1);
        }
        m_startAtLineSpinBox->setEnabled(true);
        m_startAtLineLabel->setText(
            m_allRowsLoadedInPreview ?
            xi18n("Start at line (1-%1):", count)
            : xi18n("Start at line:") //we do not know what's real count
        );
        m_startAtLineLabel->setEnabled(true);
    }
    else { // no data
        m_startAtLineSpinBox->setMaximum(1);
        m_startAtLineSpinBox->setValue(1);
        m_startAtLineSpinBox->setEnabled(false);
        m_startAtLineLabel->setText(xi18n("Start at line:"));
        m_startAtLineLabel->setEnabled(false);
    }
    updateRowCountInfo();

    m_blockUserEvents = false;
    repaint();
}

QString KexiCSVImportDialog::detectDelimiterByLookingAtFirstBytesOfFile(QTextStream *inputStream)
{
    // try to detect delimiter
    // \t has priority, then ; then ,
    const qint64 origOffset = inputStream->pos();
    QChar c, prevChar = 0;
    int detectedDelimiter = 0;
    bool insideQuote = false;

    //characters by priority
    const int CH_TAB_AFTER_QUOTE = 500;
    const int CH_SEMICOLON_AFTER_QUOTE = 499;
    const int CH_COMMA_AFTER_QUOTE = 498;
    const int CH_TAB = 200; // \t
    const int CH_SEMICOLON = 199; // ;
    const int CH_COMMA = 198; // ,

    QList<int> tabsPerLine, semicolonsPerLine, commasPerLine;
    int tabs = 0, semicolons = 0, commas = 0;
    int line = 0;
    bool wasChar13 = false; // true if previous x was '\r'
    for (int i = 0; !inputStream->atEnd() && i < MAX_CHARS_TO_SCAN_WHILE_DETECTING_DELIMITER; i++) {
        (*m_inputStream) >> c; // read one char
        if (prevChar == '"') {
            if (c != '"') //real quote (not double "")
                insideQuote = !insideQuote;
        }
        if (insideQuote) {
            prevChar = c;
            continue;
        }
        if (c == ' ')
            continue;
        if (wasChar13 && c == '\n') {
            wasChar13 = false;
            continue; // previous x was '\r', eat '\n'
        }
        wasChar13 = c == '\r';
        if (c == '\n' || c == '\r') {//end of line
            //remember # of tabs/semicolons/commas in this line
            tabsPerLine += tabs;
            tabs = 0;
            semicolonsPerLine += semicolons;
            semicolons = 0;
            commasPerLine += commas;
            commas = 0;
            line++;
        } else if (c == '\t') {
            tabs++;
            detectedDelimiter = qMax(prevChar == '"' ? CH_TAB_AFTER_QUOTE : CH_TAB, detectedDelimiter);
        } else if (c == ';') {
            semicolons++;
            detectedDelimiter = qMax(prevChar == '"' ? CH_SEMICOLON_AFTER_QUOTE : CH_SEMICOLON, detectedDelimiter);
        } else if (c == ',') {
            commas++;
            detectedDelimiter = qMax(prevChar == '"' ? CH_COMMA_AFTER_QUOTE : CH_COMMA, detectedDelimiter);
        }
        prevChar = c;
    }

    inputStream->seek(origOffset); //restore orig. offset

    //now, try to find a delimiter character that exists the same number of times in all the checked lines
    //this detection method has priority over others
    QList<int>::ConstIterator it;
    if (tabsPerLine.count() > 1) {
        tabs = tabsPerLine.isEmpty() ? 0 : tabsPerLine.first();
        for (it = tabsPerLine.constBegin(); it != tabsPerLine.constEnd(); ++it) {
            if (tabs != *it)
                break;
        }
        if (tabs > 0 && it == tabsPerLine.constEnd())
            return "\t";
    }
    if (semicolonsPerLine.count() > 1) {
        semicolons = semicolonsPerLine.isEmpty() ? 0 : semicolonsPerLine.first();
        for (it = semicolonsPerLine.constBegin(); it != semicolonsPerLine.constEnd(); ++it) {
            if (semicolons != *it)
                break;
        }
        if (semicolons > 0 && it == semicolonsPerLine.constEnd())
            return ";";
    }
    if (commasPerLine.count() > 1) {
        commas = commasPerLine.first();
        for (it = commasPerLine.constBegin(); it != commasPerLine.constEnd(); ++it) {
            if (commas != *it)
                break;
        }
        if (commas > 0 && it == commasPerLine.constEnd())
            return ",";
    }
    //now return the winning character by looking at CH_* symbol
    if (detectedDelimiter == CH_TAB_AFTER_QUOTE || detectedDelimiter == CH_TAB)
        return "\t";
    if (detectedDelimiter == CH_SEMICOLON_AFTER_QUOTE || detectedDelimiter == CH_SEMICOLON)
        return ";";
    if (detectedDelimiter == CH_COMMA_AFTER_QUOTE || detectedDelimiter == CH_COMMA)
        return ",";

    return KEXICSV_DEFAULT_FILE_DELIMITER; //<-- default
}

tristate KexiCSVImportDialog::loadRows(QString &field, int &row, int &column, int &maxColumn,
                                       bool inGUI)
{
    enum { S_START, S_QUOTED_FIELD, S_MAYBE_END_OF_QUOTED_FIELD, S_END_OF_QUOTED_FIELD,
           S_MAYBE_NORMAL_FIELD, S_NORMAL_FIELD, S_COMMENT
         } state = S_START;
    field.clear();
    const bool ignoreDups = m_ignoreDuplicates->isChecked();
    bool lastCharDelimiter = false;
    bool nextRow = false;
    row = column = 1;
    m_prevColumnForSetText = 0;
    maxColumn = 0;
    QChar x;
    const bool hadInputStream = m_inputStream != 0;
    delete m_inputStream;
    if (m_mode == Clipboard) {
        m_inputStream = new QTextStream(&m_clipboardData, QIODevice::ReadOnly);
        if (!hadInputStream)
            m_delimiterWidget->setDelimiter(KEXICSV_DEFAULT_CLIPBOARD_DELIMITER);
    } else {
        m_file->seek(0); //always seek at 0 because loadRows() is called many times
        m_inputStream = new QTextStream(m_file);
        QTextCodec *codec = KCharsets::charsets()->codecForName(m_options.encoding);
        if (codec) {
            m_inputStream->setCodec(codec); //QTextCodec::codecForName("CP1250"));
        }
        if (m_detectDelimiter) {
            const QString delimiter(detectDelimiterByLookingAtFirstBytesOfFile(m_inputStream));
            if (m_delimiterWidget->delimiter() != delimiter)
                m_delimiterWidget->setDelimiter(delimiter);
        }
    }
    const QChar delimiter(m_delimiterWidget->delimiter()[0]);
    const QChar commentSymbol(m_commentWidget->commentSymbol()[0]);
    m_stoppedAt_MAX_BYTES_TO_PREVIEW = false;
    if (m_importingProgressBar) {
        m_elapsedTimer.start();
        m_elapsedMs = m_elapsedTimer.elapsed();
    }
    int offset = 0;
    bool wasChar13 = false; // true if previous x was '\r'
    for (;; ++offset) {
        if (m_importingProgressBar && (offset % 0x100) == 0
            && (m_elapsedMs + PROGRESS_STEP_MS) < m_elapsedTimer.elapsed())
        {
            //update progr. bar dlg on final exporting
            m_elapsedMs = m_elapsedTimer.elapsed();
            m_importingProgressBar->setValue(offset);
            qApp->processEvents();
            if (m_importCanceled) {
                return ::cancelled;
            }
        }
        if (m_inputStream->atEnd()) {
            if (x != '\n' && x != '\r') {
                x = '\n'; // simulate missing \n at end
                wasChar13 = false;
            }
            else {
                break; // finish!
            }
        }
        else {
            (*m_inputStream) >> x; // read one char
        }

        if (wasChar13 && x == '\n') {
            wasChar13 = false;
            continue; // previous x was '\r', eat '\n'
        }
        wasChar13 = x == '\r';
        if (offset == 0 && x.unicode() == 0xfeff) {
            // Ignore BOM, the "Byte Order Mark"
            // (http://en.wikipedia.org/wiki/Byte_Order_Mark, // http://www.unicode.org/charts/PDF/UFFF0.pdf)
            // Probably fixed in Qt4.
            continue;
        }

        switch (state) {
        case S_START :
            if (x == m_textquote) {
                state = S_QUOTED_FIELD;
            } else if (x == delimiter) {
                field.clear();
                if ((ignoreDups == false) || (lastCharDelimiter == false))
                    ++column;
                lastCharDelimiter = true;
            } else if (x == '\n' || x == '\r' || (x == commentSymbol && m_parseComments)) {
                if (!inGUI) {
                    //fill remaining empty fields (database wants them explicitly)
                    for (int additionalColumn = column; additionalColumn <= maxColumn; additionalColumn++) {
                        setText(row - m_startline, additionalColumn, QString(), inGUI);
                    }
                }
                nextRow = true;
                if (ignoreDups && lastCharDelimiter) {
                    // we're ignoring repeated delimiters so remove any extra trailing delimiters
                    --column;
                }
                maxColumn = qMax(maxColumn, column);
                column = 1;
                m_prevColumnForSetText = 0;
                if (x == commentSymbol && m_parseComments) {
                    state = S_COMMENT;
                    maxColumn -= 1;
                    break;
                }
            } else {
                field += x;
                state = S_MAYBE_NORMAL_FIELD;
            }
            break;
        case S_QUOTED_FIELD :
            if (x == m_textquote) {
                state = S_MAYBE_END_OF_QUOTED_FIELD;
            }
            /*allow \n inside quoted fields
                  else if (x == '\n')
                  {
                    setText(row - m_startline, column, field, inGUI);
                    field = "";
                    if (x == '\n')
                    {
                      nextRow = true;
                      maxColumn = qMax( maxColumn, column );
                      column = 1;
                    }
                    else
                    {
                      if ((ignoreDups == false) || (lastCharDelimiter == false))
                        ++column;
                      lastCharDelimiter = true;
                    }
                    state = S_START;
                  }*/
            else {
                field += x;
            }
            break;
        case S_MAYBE_END_OF_QUOTED_FIELD :
            if (x == m_textquote) {
                field += x; //no, this was just escaped quote character
                state = S_QUOTED_FIELD;
            } else if (x == delimiter || x == '\n' || x == '\r' || (x == commentSymbol && m_parseComments)) {
                setText(row - m_startline, column, field, inGUI);
                field.clear();
                if (x == '\n' || x == '\r' || (x == commentSymbol && m_parseComments)) {
                    nextRow = true;
                    maxColumn = qMax(maxColumn, column);
                    column = 1;
                    m_prevColumnForSetText = 0;
                    if (x == commentSymbol && m_parseComments) {
                        state = S_COMMENT;
                        break;
                    }
                } else {
                    if ((ignoreDups == false) || (lastCharDelimiter == false))
                        ++column;
                    lastCharDelimiter = true;
                }
                state = S_START;
            } else {
                state = S_END_OF_QUOTED_FIELD;
            }
            break;
        case S_END_OF_QUOTED_FIELD :
            if (x == delimiter || x == '\n' || x == '\r' || (x == commentSymbol && m_parseComments)) {
                setText(row - m_startline, column, field, inGUI);
                field.clear();
                if (x == '\n' || x == '\r' || (x == commentSymbol && m_parseComments)) {
                    nextRow = true;
                    maxColumn = qMax(maxColumn, column);
                    column = 1;
                    m_prevColumnForSetText = 0;
                    if (x == commentSymbol && m_parseComments) {
                        state = S_COMMENT;
                        break;
                    }
                } else {
                    if ((ignoreDups == false) || (lastCharDelimiter == false))
                        ++column;
                    lastCharDelimiter = true;
                }
                state = S_START;
            } else {
                state = S_END_OF_QUOTED_FIELD;
            }
            break;
        case S_COMMENT :
            if (x == '\n' || x == '\r') {
                state = S_START;
            }
            if (lastCharDelimiter) {
                lastCharDelimiter = false;
            }
            break;
        case S_MAYBE_NORMAL_FIELD :
        case S_NORMAL_FIELD :
            if (state == S_MAYBE_NORMAL_FIELD && x == m_textquote) {
                field.clear();
                state = S_QUOTED_FIELD;
                break;
            }
            if (x == delimiter || x == '\n' || x == '\r' || (x == commentSymbol && m_parseComments)) {
                setText(row - m_startline, column, field, inGUI);
                field.clear();
                if (x == '\n' || x == '\r' || (x == commentSymbol && m_parseComments)) {
                    nextRow = true;
                    maxColumn = qMax(maxColumn, column);
                    column = 1;
                    m_prevColumnForSetText = 0;
                    if (x == commentSymbol && m_parseComments) {
                        state = S_COMMENT;
                        break;
                    }
                } else {
                    if ((ignoreDups == false) || (lastCharDelimiter == false))
                        ++column;
                    lastCharDelimiter = true;
                }
                state = S_START;
            } else {
                field += x;
            }
            break;
        } // switch
        if (x != delimiter)
            lastCharDelimiter = false;

        if (nextRow) {
            if (!inGUI && !shouldSaveRow(row - m_startline, m_1stRowForFieldNames->isChecked())) {
                // do not save to the database 1st row if it contains column names
                m_valuesToInsert.clear();
            } else if (!saveRow(inGUI))
                return false;
            ++row;
        }

        if (m_firstFillTableCall && row == 2
                && !m_1stRowForFieldNames->isChecked() && m_table->firstRowForFieldNames()) {
            m_table->clear();
            m_firstFillTableCall = false; //this trick is allowed only once, on startup
            m_1stRowForFieldNames->setChecked(true); //this will reload table
            m_blockUserEvents = false;
            repaint();
            return false;
        }

        if (!m_importingProgressBar && row % 20 == 0) {
            qApp->processEvents();
            //only for GUI mode:
            if (!m_firstFillTableCall && m_loadingProgressDlg && m_loadingProgressDlg->wasCanceled()) {
                delete m_loadingProgressDlg;
                m_loadingProgressDlg = 0;
                m_dialogCanceled = true;
                reject();
                return false;
            }
        }

        if (!m_firstFillTableCall && m_loadingProgressDlg) {
            m_loadingProgressDlg->setValue(qMin(m_maximumRowsForPreview, row));
        }

        if (inGUI && row > (m_maximumRowsForPreview + (m_table->firstRowForFieldNames() ? 1 : 0))) {
            qDebug() << "loading stopped at row #" << m_maximumRowsForPreview;
            break;
        }
        if (nextRow) {
            nextRow = false;
            //additional speedup: stop processing now if too many bytes were loaded for preview
            //qDebug() << offset;
            if (inGUI && offset >= m_maximumBytesForPreview && row >= 2) {
                m_stoppedAt_MAX_BYTES_TO_PREVIEW = true;
                return true;
            }
        }
    }
    return true;
}

void KexiCSVImportDialog::updateColumn(int col)
{
    KDbField::Type detectedType = d->detectedType(col);
    if (detectedType == KDbField::InvalidType) {
        d->setDetectedType(col, KDbField::Text); //entirely empty column
        detectedType = KDbField::Text;
    }

    m_table->setHeaderData(col, Qt::Horizontal,
        QString(xi18n("Column %1", col + 1) + "  \n(" + kexiCSVImportStatic->typeNames[detectedType].toLower() + ")  "));
    m_tableView->horizontalHeader()->adjustSize();
    if (m_primaryKeyColumn == -1 && isPrimaryKeyAllowed(col)) {
        m_primaryKeyColumn = col;
    }
}

bool KexiCSVImportDialog::isPrimaryKeyAllowed(int col)
{
    QList<int> *list = d->uniquenessTest(col);
    if (m_primaryKeyColumn != -1 || !list || list->isEmpty()) {
        return false;
    }
    bool result = false;
    int expectedRowCount = m_table->rowCount();
    if (m_table->firstRowForFieldNames()) {
        expectedRowCount--;
    }
    if (list->count() == expectedRowCount) {
        qSort(*list);
        QList<int>::ConstIterator it = list->constBegin();
        int prevValue = *it;
        ++it;
        for (; it != list->constEnd() && prevValue != (*it); ++it) {
            prevValue = (*it);
        }
        result = it == list->constEnd(); // no duplicates
    }
    list->clear(); // not needed now: conserve memory
    return result;
}

void KexiCSVImportDialog::detectTypeAndUniqueness(int row, int col, const QString& text)
{
    int intValue;
    KDbField::Type type = d->detectedType(col);
    if (row == 1 || type != KDbField::Text) {
        bool found = false;
        if (text.isEmpty() && type == KDbField::InvalidType)
            found = true; //real type should be found later
        //detect type because it's 1st row or all prev. rows were not text
        //-FP number? (trying before "number" type is a must)
        if (!found && (row == 1 || type == KDbField::Integer || type == KDbField::Double
                                || type == KDbField::InvalidType))
        {
            bool ok = text.isEmpty() || m_fpNumberRegExp1.match(text).hasMatch() || m_fpNumberRegExp2.match(text).hasMatch();
            if (ok && (row == 1 || type == KDbField::InvalidType))
            {
                d->setDetectedType(col, KDbField::Double);
                found = true; //yes
            }
        }
        //-number?
        if (!found && (row == 1 || type == KDbField::Integer || type == KDbField::InvalidType)) {
            bool ok = text.isEmpty();//empty values allowed
            if (!ok)
                intValue = text.toInt(&ok);
            if (ok && (row == 1 || type == KDbField::InvalidType)) {
                d->setDetectedType(col, KDbField::Integer);
                found = true; //yes
            }
        }
        //-date?
        if (!found && (row == 1 || type == KDbField::Date || type == KDbField::InvalidType)) {
            if ((row == 1 || type == KDbField::InvalidType)
                    && (text.isEmpty() || m_dateRegExp.match(text).hasMatch())) {
                d->setDetectedType(col, KDbField::Date);
                found = true; //yes
            }
        }
        //-time?
        if (!found && (row == 1 || type == KDbField::Time || type == KDbField::InvalidType)) {
            if ((row == 1 || type == KDbField::InvalidType)
                 && (text.isEmpty() || m_timeRegExp1.match(text).hasMatch() || m_timeRegExp2.match(text).hasMatch()))
            {
                d->setDetectedType(col, KDbField::Time);
                found = true; //yes
            }
        }
        //-date/time?
        if (!found && (row == 1 || type == KDbField::Time || type == KDbField::InvalidType)) {
            if (row == 1 || type == KDbField::InvalidType) {
                bool detected = text.isEmpty();
                if (!detected) {
                    const QStringList dateTimeList(text.split(' '));
                    bool ok = dateTimeList.count() >= 2;
//! @todo also support ISODateTime's "T" separator?
//! @todo also support timezones?
                    if (ok) {
                        //try all combinations
                        QString datePart(dateTimeList[0].trimmed());
                        QString timePart(dateTimeList[1].trimmed());
                        ok = m_dateRegExp.match(datePart).hasMatch()
                             && (m_timeRegExp1.match(timePart).hasMatch() || m_timeRegExp2.match(timePart).hasMatch());
                    }
                    detected = ok;
                }
                if (detected) {
                    d->setDetectedType(col, KDbField::DateTime);
                    found = true; //yes
                }
            }
        }
        if (!found && type == KDbField::InvalidType && !text.isEmpty()) {
            //eventually, a non-emptytext after a while
            d->setDetectedType(col, KDbField::Text);
            found = true; //yes
        }
        //default: text type (already set)
    }

    type = d->detectedType(col);
    //qDebug() << type;

    if (type == KDbField::Integer) {
        // check uniqueness for this value
        QList<int> *list = d->uniquenessTest(col);
        if (text.isEmpty()) {
            if (list) {
                list->clear(); // empty value cannot be in PK
            }
        }
        else {
            if (!list) {
                list = new QList<int>();
                d->setUniquenessTest(col, list);
            }
            list->append(intValue);
        }
    }
}

QDate KexiCSVImportDialog::buildDate(int y, int m, int d) const
{
    if (y < 100) {
        if ((1900 + y) >= m_minimumYearFor100YearSlidingWindow)
            return QDate(1900 + y, m, d);
        else
            return QDate(2000 + y, m, d);
    }
    return QDate(y, m, d);
}

bool KexiCSVImportDialog::parseDate(const QString& text, QDate& date)
{
    QRegularExpressionMatch match = m_dateRegExp.match(text);
    if (!match.hasMatch())
        return false;
    //dddd - dd - dddd
    //1    2 3  4 5    <- pos
    const int d1 = match.captured(1).toInt(), d3 = match.captured(3).toInt(), d5 = match.captured(5).toInt();
    switch (m_options.dateFormat) {
    case KexiCSVImportOptions::DMY: date = buildDate(d5, d3, d1); break;
    case KexiCSVImportOptions::YMD: date = buildDate(d1, d3, d5); break;
    case KexiCSVImportOptions::MDY: date = buildDate(d5, d1, d3); break;
    case KexiCSVImportOptions::AutoDateFormat:
        if (match.captured(2) == "/") { //probably separator for american format mm/dd/yyyy
            date = buildDate(d5, d1, d3);
        } else {
            if (d5 > 31) //d5 == year
                date = buildDate(d5, d3, d1);
            else //d1 == year
                date = buildDate(d1, d3, d5);
        }
        break;
    default:;
    }
    return date.isValid();
}

bool KexiCSVImportDialog::parseTime(const QString& text, QTime& time)
{
    time = QTime::fromString(text, Qt::ISODate); //same as m_timeRegExp1
    if (time.isValid())
        return true;

    QRegularExpressionMatch match = m_timeRegExp2.match(text);
    if (match.hasMatch()) { //hh:mm:ss
        time = QTime(match.captured(1).toInt(),
                     match.captured(3).toInt(), match.captured(5).toInt());
        return true;
    }
    return false;
}

void KexiCSVImportDialog::setText(int row, int col, const QString& text, bool inGUI)
{
    if (!inGUI) {
        if (!shouldSaveRow(row, m_1stRowForFieldNames->isChecked()))
            return; // do not care about this value if it contains column names (these were already used)

        //save text directly to database buffer
        if (m_prevColumnForSetText == 0) { //1st call
            m_valuesToInsert.clear();
            if (m_implicitPrimaryKeyAdded) {
                m_valuesToInsert << QVariant(); //id will be autogenerated here
            }
        }
        if ((m_prevColumnForSetText + 1) < col) { //skipped one or more columns
                                                  //before this: save NULLs first
            for (int i = m_prevColumnForSetText + 1; i < col; i++) {
                if (m_options.nullsImportedAsEmptyTextChecked && KDbField::isTextType(d->detectedType(i-1))) {
                    m_valuesToInsert << QString("");
                } else {
                    m_valuesToInsert << QVariant();
                }
            }
        }
        m_prevColumnForSetText = col;

        const KDbField::Type detectedType = d->detectedType(col-1);
        if (detectedType == KDbField::Integer) {
            m_valuesToInsert << (text.isEmpty() ? QVariant() : text.toInt());
//! @todo what about time and float/double types and different integer subtypes?
        } else if (detectedType == KDbField::Double) {
            //replace ',' with '.'
            QByteArray t(text.toLatin1());
            const int textLen = t.length();
            for (int i = 0; i < textLen; i++) {
                if (t[i] == ',') {
                    t[i] = '.';
                    break;
                }
            }
            m_valuesToInsert << (t.isEmpty() ? QVariant() : t.toDouble());
        } else if (detectedType == KDbField::Boolean) {
            const QString t(text.trimmed().toLower());
            if (t.isEmpty())
                m_valuesToInsert << QVariant();
            else if (t == "0" || t == m_stringNo || t == m_stringI18nNo || t == m_stringFalse || t == m_stringI18nFalse)
                m_valuesToInsert << QVariant(false);
            else
                m_valuesToInsert << QVariant(true); //anything nonempty
        } else if (detectedType == KDbField::Date) {
            QDate date;
            if (parseDate(text, date))
                m_valuesToInsert << date;
            else
                m_valuesToInsert << QVariant();
        } else if (detectedType == KDbField::Time) {
            QTime time;
            if (parseTime(text, time))
                m_valuesToInsert << time;
            else
                m_valuesToInsert << QVariant();
        } else if (detectedType == KDbField::DateTime) {
            QStringList dateTimeList(text.split(' '));
            if (dateTimeList.count() < 2)
                dateTimeList = text.split('T'); //also support ISODateTime's "T" separator
//! @todo also support timezones?
            if (dateTimeList.count() >= 2) {
                //try all combinations
                QString datePart(dateTimeList[0].trimmed());
                QDate date;
                if (parseDate(datePart, date)) {
                    QString timePart(dateTimeList[1].trimmed());
                    QTime time;
                    if (parseTime(timePart, time))
                        m_valuesToInsert << QDateTime(date, time);
                    else
                        m_valuesToInsert << QVariant();
                } else
                    m_valuesToInsert << QVariant();
            } else
                m_valuesToInsert << QVariant();
        } else {   // Text type and the rest
            if (m_options.nullsImportedAsEmptyTextChecked && text.isNull()) {
                //default value is empty string not null - otherwise querying data without knowing SQL is very confusing
                m_valuesToInsert << QString("");
            } else {
                m_valuesToInsert <<QVariant((m_options.trimmedInTextValuesChecked ? text.trimmed() : text));
            }
        };

        return;
    }
    //save text to GUI (table view)
    if (m_table->columnCount() < col) {
        m_table->setColumnCount(col);
    }
    if (!m_1stRowForFieldNames->isChecked()) {
        if ((row + m_startline) == 1) {//this row is for column name
            if (m_table->firstRowForFieldNames() && !m_1stRowForFieldNames->isChecked()) {
                QString f(text.simplified());
                if (f.isEmpty() || !f[0].isLetter()) {
                    m_table->setFirstRowForFieldNames(false);
                }
            }
        }
        row++; //1st row was for column names
    } else {
        if ((row + m_startline) == 1) {//this is for column name
            m_table->setRowCount(1);
            QString colName(text.simplified());
            if (!colName.isEmpty()) {
                if (colName.at(0) >= QLatin1Char('0') && colName.at(0) <= QLatin1Char('9')) {
                    colName.prepend(xi18n("Column") + " ");
                }
                m_table->setData(m_table->index(0, col - 1), colName);
            }
            return;
        }
    }
    if (row < 2) // skipped by the user
        return;
    if (m_table->rowCount() < row) {
        m_table->setRowCount(row + 100); /* We add more rows at a time to limit recalculations */
        m_adjustRows = true;
    }

    m_table->setData(m_table->index(row-1 ,col-1),m_options.trimmedInTextValuesChecked ? text.trimmed() : text);

    detectTypeAndUniqueness(row - 1, col - 1, text);
}

bool KexiCSVImportDialog::saveRow(bool inGUI)
{
    if (inGUI) {
        //nothing to do
        return true;
    }
    bool res = m_importingStatement.execute(m_valuesToInsert);
//! @todo move
    if (!res) {
        const QStringList msgList = KexiUtils::convertTypesUsingMethod<QVariant, QString, &QVariant::toString>(m_valuesToInsert);
        const KMessageBox::ButtonCode msgRes = KMessageBox::warningContinueCancelList(this,
                    xi18nc("@info", "An error occurred during insert record."),
                    QStringList(msgList.join(";")),
                    QString(),
                    KStandardGuiItem::cont(),
                    KStandardGuiItem::cancel(),
                    "SkipImportErrors"
                  );
        res = msgRes == KMessageBox::Continue;
    }
    m_valuesToInsert.clear();
    return res;
}

void KexiCSVImportDialog::adjustRows(int iRows)
{
    if (m_adjustRows) {
        m_table->setRowCount(iRows);
        m_adjustRows = false;
        for (int i = 0; i < iRows; i++)
            m_tableView->resizeRowToContents(i);
    }
}

void KexiCSVImportDialog::formatChanged(int index)
{
    if (index < 0 || index >= kexiCSVImportStatic->types.size())
        return;
    KDbField::Type type = kexiCSVImportStatic->types[index];
    d->setDetectedType(m_tableView->currentIndex().column(), type);
    m_primaryKeyField->setEnabled(KDbField::Integer == type);
    m_primaryKeyField->setChecked(m_primaryKeyColumn == m_tableView->currentIndex().column() && m_primaryKeyField->isEnabled());
    updateColumn(m_tableView->currentIndex().column());
}

void KexiCSVImportDialog::delimiterChanged(const QString& delimiter)
{
    Q_UNUSED(delimiter);
    m_columnsAdjusted = false;
    m_detectDelimiter = false; //selected by hand: do not detect in the future
    //delayed, otherwise combobox won't be repainted
    fillTableLater();
}

void KexiCSVImportDialog::commentSymbolChanged(const QString& commentSymbol)
{
    QString noneString = QString(xi18n("None"));
    if (commentSymbol.compare(noneString) == 0) {
        m_parseComments = false;
    } else {
        m_parseComments = true;
    }
    m_columnsAdjusted = false;
    m_detectDelimiter = false; //selected by hand: do not detect in the future
    //delayed, otherwise combobox won't be repainted
    fillTableLater();
}

void KexiCSVImportDialog::textquoteSelected(int)
{
    const QString tq(m_comboQuote->textQuote());
    if (tq.isEmpty())
        m_textquote = 0;
    else
        m_textquote = tq[0];

    qDebug() << m_textquote;

    //delayed, otherwise combobox won't be repainted
    fillTableLater();
}

void KexiCSVImportDialog::fillTableLater()
{
    m_table->setColumnCount(0);
    QTimer::singleShot(10, this, SLOT(fillTable()));
}

void KexiCSVImportDialog::startlineSelected(int startline)
{
    if (m_startline == (startline - 1))
        return;
    m_startline = startline - 1;
    m_adjustRows = true;
    m_columnsAdjusted = false;
    fillTable();
    m_tableView->setFocus();
}

void KexiCSVImportDialog::currentCellChanged(const QModelIndex &cur, const QModelIndex &prev)
{
    if (prev.column() == cur.column() || !cur.isValid())
        return;
    const KDbField::Type type = d->detectedType(cur.column());
    m_formatCombo->setCurrentIndex(kexiCSVImportStatic->indicesForTypes.value(type, -1));
    m_formatLabel->setText(xi18n("Format for column %1:", cur.column() + 1));
    m_primaryKeyField->setEnabled(KDbField::Integer == type);
    m_primaryKeyField->blockSignals(true); //block to disable executing slotPrimaryKeyFieldToggled()
    m_primaryKeyField->setChecked(m_primaryKeyColumn == cur.column());
    m_primaryKeyField->blockSignals(false);
}

//! Used in emergency by accept()
void KexiCSVImportDialog::dropDestinationTable(KexiProject* project, KexiPart::Item* &partItemForSavedTable)
{
    m_importingProgressBar->hide();
    project->deleteUnstoredItem(partItemForSavedTable);
    partItemForSavedTable = 0;
    m_conn->dropTable(m_destinationTableSchema); /*alsoRemoveSchema*/
    m_destinationTableSchema = 0;
    m_conn = 0;
}

//! Used in emergency by accept()
void KexiCSVImportDialog::raiseErrorInAccept(KexiProject* project, KexiPart::Item* &partItemForSavedTable)
{
    finishButton()->setEnabled(true);
    project->deleteUnstoredItem(partItemForSavedTable);
    partItemForSavedTable = 0;
    delete m_destinationTableSchema;
    m_destinationTableSchema = 0;
    m_conn = 0;
    backButton()->setEnabled(true);
    m_importInProgress = false;
    m_importingProgressBar->hide();
}

void KexiCSVImportDialog::accept()
{
    if (d->imported) {
        parentWidget()->raise();
        bool openingCanceled;
        KexiWindow *win = KexiMainWindowIface::global()->openedWindowFor(m_partItemForSavedTable);
        if (win) {
            KexiMainWindowIface::global()->closeObject(m_partItemForSavedTable);
        }
        KexiMainWindowIface::global()->openObject(m_partItemForSavedTable,
                                                  Kexi::DataViewMode, &openingCanceled);
        KAssistantDialog::accept();
    }
    else {
        import();
    }
}

void KexiCSVImportDialog::import()
{
//! @todo MOVE MOST OF THIS TO CORE/ (KexiProject?) after KexiWindow code is moved to non-gui place

    KMessageBox::enableMessage("SkipImportErrors");
    KexiGUIMessageHandler msg; //! @todo make it better integrated with main window
    KexiProject *project = KexiMainWindowIface::global()->project();
    if (!project) {
        msg.showErrorMessage(KDbMessageHandler::Error, xi18n("No project available."));
        return;
    }
    m_conn = project->dbConnection();
    if (!m_conn) {
        msg.showErrorMessage(KDbMessageHandler::Error, xi18n("No database connection available."));
        return;
    }

    if (m_newTableOption->isChecked()) {
        m_destinationTableSchema = new KDbTableSchema(m_partItemForSavedTable->name());
        m_destinationTableSchema->setCaption(m_partItemForSavedTable->caption());
        m_destinationTableSchema->setDescription(m_partItemForSavedTable->description());
        const int numCols(m_table->columnCount());

        m_implicitPrimaryKeyAdded = false;
        //add PK if user wanted it
        int msgboxResult;
        if (   m_primaryKeyColumn == -1
           && KMessageBox::No != (msgboxResult = KMessageBox::questionYesNoCancel(this,
                  xi18nc("@info",
                        "<para>No primary key (autonumber) has been defined.</para>"
                        "<para>Should it be automatically defined on import (recommended)?</para>"
                        "<para><note>An imported table without a primary key may not be "
                        "editable (depending on database type).</note></para>"),
                   QString(),
                   KGuiItem(xi18nc("@action:button Add Database Primary Key to a Table", "&Add Primary Key"), KexiIconName("database-key")),
                   KGuiItem(xi18nc("@action:button Do Not Add Database Primary Key to a Table", "Do &Not Add"), KStandardGuiItem::no().icon()))))
        {
            if (msgboxResult == KMessageBox::Cancel) {
                raiseErrorInAccept(project, m_partItemForSavedTable);
                return; //cancel accepting
            }

            //add implicit PK field
//! @todo make this field hidden (what about e.g. pgsql?)
            m_implicitPrimaryKeyAdded = true;

            QString fieldName("id");
            QString fieldCaption("Id");

            QSet<QString> colnames;
            for (int col = 0; col < numCols; col++)
                colnames.insert(m_table->data(m_table->index(0, col)).toString().toLower().simplified());
            if (colnames.contains(fieldName)) {
                int num = 1;
                while (colnames.contains(fieldName + QString::number(num)))
                    num++;
                fieldName += QString::number(num);
                fieldCaption += QString::number(num);
            }
            KDbField *field = new KDbField(
                fieldName,
                KDbField::Integer,
                KDbField::NoConstraints,
                KDbField::NoOptions,
                0, 0, //int length=0, int precision=0,
                QVariant(), //QVariant defaultValue=QVariant(),
                fieldCaption
            ); //no description and width for now
            field->setPrimaryKey(true);
            field->setAutoIncrement(true);
            if (!m_destinationTableSchema->addField(field)) {
                msg.showErrorMessage(KDbMessageHandler::Error, xi18n("Cannot add column."));
                delete field;
                delete m_destinationTableSchema;
                m_destinationTableSchema = 0;
                return;
            }
        }

        for (int col = 0; col < numCols; col++) {
            QString fieldCaption(m_table->data(m_table->index(0, col)).toString().simplified());
            QString fieldName;
            if (fieldCaption.isEmpty()) {
                int i = 0;
                do {
                    fieldCaption = xi18nc("@title:column Column 1, Column 2, etc.", "Column %1", i + 1);
                    fieldName = KDb::stringToIdentifier(fieldCaption);
                    if (!m_destinationTableSchema->field(fieldName)) {
                        break;
                    }
                    i++;
                } while (true);
            }
            else {
                fieldName = KDb::stringToIdentifier(fieldCaption);
                if (m_destinationTableSchema->field(fieldName)) {
                    QString fixedFieldName;
                    int i = 2; //"apple 2, apple 3, etc. if there're many "apple" names
                    do {
                        fixedFieldName = fieldName + "_" + QString::number(i);
                        if (!m_destinationTableSchema->field(fixedFieldName))
                            break;
                        i++;
                    } while (true);
                    fieldName = fixedFieldName;
                    fieldCaption += (" " + QString::number(i));
                }
            }
            KDbField::Type detectedType = d->detectedType(col);
//! @todo what about time and float/double types and different integer subtypes?
//! @todo what about long text?
            if (detectedType == KDbField::InvalidType) {
                detectedType = KDbField::Text;
            }
            KDbField *field = new KDbField(
                fieldName,
                detectedType,
                KDbField::NoConstraints,
                KDbField::NoOptions,
                0, 0, //int length=0, int precision=0,
                QVariant(), //QVariant defaultValue=QVariant(),
                fieldCaption
            ); //no description and width for now

            if ((int)col == m_primaryKeyColumn) {
                field->setPrimaryKey(true);
                field->setAutoIncrement(true);
            }
            if (!m_destinationTableSchema->addField(field)) {
                msg.showErrorMessage(KDbMessageHandler::Error, xi18n("Cannot add column."));
                delete field;
                delete m_destinationTableSchema;
                m_destinationTableSchema = 0;
                return;
            }
        }
    } else {
        m_implicitPrimaryKeyAdded = false;
        m_destinationTableSchema = m_conn->tableSchema(m_partItemForSavedTable->name());
        int firstColumn = 0;
        if (m_destinationTableSchema->field(0)->isPrimaryKey() && m_primaryKeyColumn == -1) {
            m_implicitPrimaryKeyAdded = true;
            firstColumn = 1;
        }
        if (m_destinationTableSchema->fields()->size() - firstColumn < m_table->columnCount()) {
            KMessageBox::error(this, xi18n("<para>Field count does not match.</para>"
                        "<para>Please choose another table.</para>"));
            return;
        }
    }

    m_importInProgress = true;
    backButton()->setEnabled(false);
    finishButton()->setEnabled(false);
    KexiPart::Part *part = Kexi::partManager().partForPluginId("org.kexi-project.table");
    if (!part) {
        msg.showErrorMessage(Kexi::partManager().result());
        return;
    }

    KDbTransaction transaction = m_conn->beginTransaction();
    if (transaction.isNull()) {
        msg.showErrorMessage(m_conn->result());
        raiseErrorInAccept(project, m_partItemForSavedTable);
        return;
    }
    KDbTransactionGuard tg(transaction);

    //-create physical table
    if (m_newTableOption->isChecked() && !m_conn->createTable(m_destinationTableSchema,
        KDbConnection::CreateTableOptions(KDbConnection::CreateTableOption::Default)
            & ~KDbConnection::CreateTableOptions(KDbConnection::CreateTableOption::DropDestination)))
    {
        msg.showErrorMessage(m_conn->result());
        raiseErrorInAccept(project, m_partItemForSavedTable);
        return;
    }

    m_importingStatement = m_conn->prepareStatement(
                               KDbPreparedStatement::InsertStatement, m_destinationTableSchema);
    if (!m_importingStatement.isValid()) {
        msg.showErrorMessage(m_conn->result());
        raiseErrorInAccept(project, m_partItemForSavedTable);
        return;
    }

    if (m_file) {
        m_importProgressLabel->setText(xi18n("Importing data..."));
        m_importingProgressBar->setMaximum(QFileInfo(*m_file).size() - 1);
        m_importingProgressBar->show();
        m_importProgressLabel->show();
    }

    int row, column, maxColumn;
    QString field;

    // main job
    tristate res = loadRows(field, row, column, maxColumn, false /*!gui*/);

    if (true != res) {
        //importing canceled or failed
        if (!res) { //do not display err msg when res == cancelled
            m_importProgressLabel->setText(xi18n("Import has been canceled."));
        } else if (~res) {
            m_importProgressLabel->setText(xi18n("Error occurred during import."));
        }
        raiseErrorInAccept(project, m_partItemForSavedTable);
        return;
    }

    // file with only one line without '\n'
    if (field.length() > 0) {
        setText(row - m_startline, column, field, false /*!gui*/);
        //fill remaining empty fields (database wants them explicitly)
        for (int additionalColumn = column; additionalColumn <= maxColumn; additionalColumn++) {
            setText(row - m_startline, additionalColumn, QString(), false /*!gui*/);
        }
        if (!saveRow(false /*!gui*/)) {
            msg.showErrorMessage(m_conn->result());
            raiseErrorInAccept(project, m_partItemForSavedTable);
            return;
        }
        ++row;
        field.clear();
    }

    if (!tg.commit()) {
        msg.showErrorMessage(m_conn->result());
        raiseErrorInAccept(project, m_partItemForSavedTable);
        return;
    }

    //-now we can store the item
    if (m_newTableOption->isChecked()) {
        m_partItemForSavedTable->setIdentifier(m_destinationTableSchema->id());
        project->addStoredItem(part->info(), m_partItemForSavedTable);
    }
    m_importingProgressBar->hide();
    m_importProgressLabel->setText(xi18nc("@info",
                                          "Data has been successfully imported to table <resource>%1</resource>.",
                                          m_destinationTableSchema->name()));
    m_importInProgress = false;
    //qDebug()<<"IMPORT DONE";
    KGuiItem::assign(finishButton(), KStandardGuiItem::open());
    finishButton()->setEnabled(true);
    KGuiItem::assign(button(QDialogButtonBox::Cancel), KStandardGuiItem::close());
    nextButton()->setEnabled(false);
    backButton()->setEnabled(false);
    m_conn = 0;
    d->imported = true;
}

void KexiCSVImportDialog::reject()
{
    //qDebug()<<"IMP_P"<<m_importInProgress;
    if (!m_importInProgress) {
        KAssistantDialog::reject();
        return;
    }
    m_importCanceled = true;
}

int KexiCSVImportDialog::getHeader(int col)
{
    QString header = m_table->horizontalHeaderItem(col)->text();

    if (header == xi18nc("Text type for column", "Text"))
        return TEXT;
    else if (header == xi18nc("Numeric type for column", "Number"))
        return NUMBER;
    else if (header == xi18nc("Currency type for column", "Currency"))
        return CURRENCY;
    else
        return DATE;
}

QString KexiCSVImportDialog::getText(int row, int col)
{
    return m_table->item(row, col)->text();
}

void KexiCSVImportDialog::ignoreDuplicatesChanged(int)
{
    fillTable();
}

void KexiCSVImportDialog::slot1stRowForFieldNamesChanged(int state)
{
    m_adjustRows = true;
    if (m_1stRowForFieldNames->isChecked() && m_startline > 0 && m_startline >= (m_startAtLineSpinBox->maximum() - 1)) {
        m_startline--;
    }
    m_columnsAdjusted = false;
    fillTable();
    m_table->setFirstRowForFieldNames(state);
}

void KexiCSVImportDialog::optionsButtonClicked()
{
    KexiCSVImportOptionsDialog dlg(m_options, this);
    if (QDialog::Accepted != dlg.exec())
        return;

    KexiCSVImportOptions newOptions(dlg.options());
    if (m_options != newOptions) {
        m_options = newOptions;
        if (!openData())
            return;
        fillTable();
    }
}

bool KexiCSVImportDialog::eventFilter(QObject * watched, QEvent * e)
{
    QEvent::Type t = e->type();
    // temporary disable keyboard and mouse events for time-consuming tasks
    if (m_blockUserEvents && (t == QEvent::KeyPress || t == QEvent::KeyRelease
                              || t == QEvent::MouseButtonPress || t == QEvent::MouseButtonDblClick
                              || t == QEvent::Paint))
        return true;

    if (watched == m_startAtLineSpinBox && t == QEvent::KeyPress) {
        QKeyEvent *ke = static_cast<QKeyEvent*>(e);
        if (ke->key() == Qt::Key_Enter || ke->key() == Qt::Key_Return) {
            m_tableView->setFocus();
            return true;
        }
    }
    return QDialog::eventFilter(watched, e);
}

void KexiCSVImportDialog::slotPrimaryKeyFieldToggled(bool on)
{
    setPrimaryKeyIcon(m_primaryKeyColumn, false);
    m_primaryKeyColumn = on ? m_tableView->currentIndex().column() : -1;
    setPrimaryKeyIcon(m_primaryKeyColumn, true);
}

void KexiCSVImportDialog::setPrimaryKeyIcon(int column, bool set)
{
    if (column >= 0 && column < m_table->columnCount()) {
        m_table->setData(m_table->index(0, column), set ? m_pkIcon : QPixmap(), Qt::DecorationRole);
    }
}

void KexiCSVImportDialog::updateRowCountInfo()
{
    m_infoLbl->setFileName(m_fname);
    if (m_allRowsLoadedInPreview) {
        m_infoLbl->setCommentText(
            xi18nc("row count", "(rows: %1)", m_table->rowCount() - 1 + m_startline));
        m_infoLbl->commentLabel()->setToolTip(QString());
    } else {
        m_infoLbl->setCommentText(
            xi18nc("row count", "(rows: more than %1)",  m_table->rowCount() - 1 + m_startline));
        m_infoLbl->commentLabel()->setToolTip(xi18n("Not all rows are visible on this preview"));
    }
}

QPushButton* KexiCSVImportDialog::configureButton() const
{
    // Help button is used as Configure
    return button(QDialogButtonBox::Help);
}

#include "kexicsvimportdialog.moc"
