source: trunk/examples/sql/masterdetail/dialog.cpp@ 275

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#include "dialog.h"

int uniqueAlbumId;
int uniqueArtistId;

Dialog::Dialog(QSqlRelationalTableModel *albums, QDomDocument details,
               QFile *output, QWidget *parent)
     : QDialog(parent)
{
    model = albums;
    albumDetails = details;
    outputFile = output;

    QGroupBox *inputWidgetBox = createInputWidgets();
    QDialogButtonBox *buttonBox = createButtons();

    QVBoxLayout *layout = new QVBoxLayout;
    layout->addWidget(inputWidgetBox);
    layout->addWidget(buttonBox);
    setLayout(layout);

    setWindowTitle(tr("Add Album"));
}

void Dialog::submit()
{
    QString artist = artistEditor->text();
    QString title = titleEditor->text();

    if (artist.isEmpty() || title.isEmpty()) {
        QString message(tr("Please provide both the name of the artist "
                           "and the title of the album."));
        QMessageBox::information(this, tr("Add Album"), message);
    } else {
        int artistId = findArtistId(artist);
        int albumId = addNewAlbum(title, artistId);

        QStringList tracks;
        tracks = tracksEditor->text().split(',', QString::SkipEmptyParts);
        addTracks(albumId, tracks);

        increaseAlbumCount(indexOfArtist(artist));
        accept();
    }
}

int Dialog::findArtistId(const QString &artist)
{
    QSqlTableModel *artistModel = model->relationModel(2);
    int row = 0;

    while (row < artistModel->rowCount()) {
        QSqlRecord record = artistModel->record(row);
        if (record.value("artist") == artist)
            return record.value("id").toInt();
        else
            row++;
    }
    return addNewArtist(artist);
}


int Dialog::addNewArtist(const QString &name)
{
    QSqlTableModel *artistModel = model->relationModel(2);
    QSqlRecord record;

    int id = generateArtistId();

    QSqlField f1("id", QVariant::Int);
    QSqlField f2("artist", QVariant::String);
    QSqlField f3("albumcount", QVariant::Int);