Кастомный делегат и завершение редактирования

QWidget *Delegate::createEditor(QWidget *parent, const QStyleOptionViewItem &option, const QModelIndex &index) const
{
    FilePathEditor* editor = new FilePathEditor(parent, index);
    
    //< You should commit the data when it's changed.
    QSignalMapper * mapper = new QSignalMapper(editor);
    mapper->setMapping(editor,editor);
    QObject::connect(editor,SIGNAL(getValidPath()), mapper, SLOT(map()));
    QObject::connect(mapper, SIGNAL(mapped(QWidget *)), this, SIGNAL(commitData(QWidget *)));
    
    return editor;
}

void FilePathEditor::setPath(const QString &path) {
    ui->pathEdit->setText(QDir::toNativeSeparators(path));
    emit getValidPath();
}

class FilePathEditor : public QWidget
{
    Q_OBJECT

public:
    explicit FilePathEditor(QWidget *parent, const QModelIndex &modelIndex);
    ~FilePathEditor() override;

    void setPath(const QString &path);
    QString path() const;

    void setupDialog();
    void executeNotepad();
signals:
    void pathChanged(QWidget* widget);
    void editionFinished(QWidget* widget,QAbstractItemDelegate::EndEditHint hint = QAbstractItemDelegate::NoHint);

private:
    Ui::FilePathEditor *ui;
    QStringList filters_;
    QFileDialog::AcceptMode acceptMode_;
    QFileDialog::FileMode fileMode_;
    QModelIndex modelIndex_;

void FilePathEditor::setPath(const QString &path) {
    ui->pathEdit->setText(QDir::toNativeSeparators(path));
    emit pathChanged(this);
    if(!path.isEmpty())
    {
        emit editionFinished(this);
    }
}

QWidget *Delegate::createEditor(QWidget *parent, const QStyleOptionViewItem &option, const QModelIndex &index) const
{
    FilePathEditor* editor = new FilePathEditor(parent, index);
    connect(editor,&FilePathEditor::pathChanged,this,&QStyledItemDelegate::commitData);
    connect(editor,&FilePathEditor::editionFinished,this,&QStyledItemDelegate::closeEditor);
    return editor;
}

bool FilePathEditor::eventFilter(QObject *watched, QEvent *event) {
    if (watched == ui->pathEdit && event->type() == QEvent::FocusOut) {
        QApplication::postEvent(this, new QFocusEvent(QEvent::FocusOut));
    }
    return QWidget::eventFilter(watched, event);
}