Qt QFileDialog のサイドバー表示フォルダーをGTKのbookmarksを使って、ほぼ同じようにするサンプルコード

QString MainWindow::getOpenFilename()
{
    QFileDialog dlgfile(this);
    dlgfile.setOptions(QFileDialog::ReadOnly|QFileDialog::DontUseNativeDialog);
    dlgfile.setWindowTitle(tr("Open File"));
    dlgfile.setDirectory(init_path);
    dlgfile.setNameFilter(tr("ALL file (*.*)"));

    QSize size=dlgfile.size();
    dlgfile.resize(820,size.height());

    QList<QUrl> urls = getGTKbookmarks();
    if (urls.length() > 0){
        dlgfile.setSidebarUrls(urls);
    }

    int nrtn = dlgfile.exec();
    if (nrtn == 0){
        return "";
    }

    return dlgfile.selectedFiles()[0];
}

QList<QUrl>　MainWindow::getGTKbookmarks()
{
    QList<QUrl> urls;
    urls.clear();

    QString dirPath = QStandardPaths::standardLocations(QStandardPaths::ConfigLocation)[0];

    QStringList nameFilters;
    nameFilters << "bookmarks";

    QDir::Filters filters = QDir::Files;
    QDirIterator::IteratorFlags flags = QDirIterator::Subdirectories;

    QDirIterator it(dirPath, nameFilters, filters, flags);
    QStringList files;
    while (it.hasNext())
    {
        QString file = it.next();
        if (file.indexOf("gtk") >= 0){
            files << file;
            qDebug() << file;
            break;
        }
    }

    QStringList list;

    QFile file(files[0]);
    if (file.open(QIODevice::ReadOnly)) {
        QTextStream in(&file);

        while (!in.atEnd()) {
            QString str = in.readLine().trimmed();
            //qDebug() << in.readLine();
            if (str.length() > 0)
                list << str;
        }
        file.close();
    }

    urls << QUrl("file://"+QStandardPaths::standardLocations
		(QStandardPaths::HomeLocation)[0]);
    urls << QUrl("file://"+QStandardPaths::standardLocations
		(QStandardPaths::DesktopLocation)[0]);
    for (int ni = list.length()-1;ni > list.length()-6;ni--){
        QStringList list2 = list[ni].split(" ");
        urls << QUrl(list2[0]);
    }
    for (int ni = 0;ni < list.length()-5;ni++){
        QStringList list2 = list[ni].split(" ");
        urls << QUrl(list2[0]);
    }

    return urls;
}