reach QComboBox (QStyledItemDelegate delegate) in QTableView from outside

[Kaguro]

Hi guys!
I have a QtableView with QComboBox delegate, and a little backgroundcolor delegate (with QSqlRelationalTableModel). I have to reach the QComboBox, because i have to set current text on it.
How can i do that?
Because if I add a new record, i see this:
(the green background is my color delegate)
I tried it with this:

ui->tableView->closePersistentEditor(model->index(getSelectedRow(), 1));

but the solution is this:

Now my QCombobox is not empty its okay. But lose the green background and always triggered ( always see the arrow and border etc..).
And i tried it this code:

const QModelIndex idx = model->index(getSelectedRow(), 1);
            QWidget* wid = ui->tableView->indexWidget(idx);
            QComboBox* box = qobject_cast<QComboBox*>(wid);

            if (box)
            {
                qDebug()<<"catch it";
            }

But nothing happened, dont get the QComboBox.
So i have no idea how can i achieve it. :( Any idea?
Thank you guys! (and sorry if I lame again)

[SGaist]

Hi,

You are talking about two delegates. How did you implement them ?
How are you using them ?

[Kaguro]

@SGaist
This is where i create the table:

void ter::setTableModel(const QString& dataBase, const QString& table)
{    
    this->model = new QSqlRelationalTableModel(this, QSqlDatabase::database(dataBase));
    this->model->setTable(table);
    this->model->setEditStrategy(QSqlTableModel::OnManualSubmit);
    this->model->select();
    this->ui->tableView->setModel(model); 

    connect(this->model, SIGNAL(dataChanged(const QModelIndex&, const QModelIndex&)), this, SLOT(preValidCell(const QModelIndex&, const QModelIndex& )));

    this->ui->tableView->setSortingEnabled(true);
    this->ui->tableView->sortByColumn(0,Qt::AscendingOrder);    

    this->ui->tableView->horizontalHeader()->setSectionsMovable(true);
    this->ui->tableView->horizontalHeader()->setDragDropOverwriteMode(true);
    this->ui->tableView->horizontalHeader()->setDragEnabled(true);
    this->ui->tableView->horizontalHeader()->setDragDropMode(QAbstractItemView::InternalMove);
    this->ui->tableView->resizeColumnsToContents();    

    connect(ui->tableView->selectionModel(), &QItemSelectionModel::selectionChanged, this, &QFXTorzs::slotLoadTransaction);
}

When I create te relation:

void ter::setComboCells(QString columnName, const QString &strTableName, const QString &strKey, const QString &strField)
{
    this->model->setRelation(model->fieldIndex(strForeignKey), QSqlRelation(strTableName, strKey, strField);
    this->model->select();    
    ui->tableView->setModel(model);
    ui->tableView->setItemDelegate(new ColorDelegate(Qt::color0,ui->tableView));
}

This is my ColorDelegate:

class ColorDelegate: public QSqlRelationalDelegate
{
public:
    QColor color;
    ColorDelegate(QColor colo, QObject *parent = nullptr) : QSqlRelationalDelegate(parent)
    {
        color = colo;
    }

public:
    virtual void paint(QPainter *painter, const QStyleOptionViewItem &option,
                       const QModelIndex &index) const
    {
        if(color!=Qt::color0)
        {
            drawBackground(painter, option, index);
        }

        QStyleOptionViewItem itemOption(option);
        if (itemOption.state & QStyle::State_HasFocus)
            itemOption.state = itemOption.state ^ QStyle::State_HasFocus;

        QSqlRelationalDelegate::paint(painter, itemOption, index);
    }
private:
    bool shouldBeBold(const QModelIndex &){
        return true;
    }

protected:
    virtual void drawBackground(QPainter *painter, const QStyleOptionViewItem &option,
                                const QModelIndex &index) const
    {
        Q_UNUSED(index);
        painter->fillRect(option.rect, color);
    }
};

When i hit the new record creater button:

void ter::on_toolButtonNew_clicked()
{
        this->model->insertRow(getSelectedRow()+1);
        QModelIndex index = ui->tableView->model()->index(getSelectedRow()+1, ui->tableView->columnAt(0));
        ui->tableView->setCurrentIndex(index);
        ui->tableView->edit(index);
        ui->tableView->setItemDelegateForRow(getSelectedRow(),new ColorDelegate(Qt::green,ui->tableView));
}

Sorry , my memory was wrong. Not two delegete just one with different parameter.

[VRonin]

Your delegate never actually deals with the combobox and from your original post I suspect you are inexlicably using the dreaded setIndexWidget. Could you confirm my suspicions?

[Kaguro]

@VRonin
I think yes you are right.
ComboBox appaear because the model is QSqlRelationalTableModel and i linked a realtion with setRelation function.
So any advice?

[SGaist]

Do you mean you can't dismiss the editor after you did your choice ?

[Kaguro]

@SGaist
I mean the editor is still active, I can dismiss but u can see in the last picture the editor is still active, not as same as the other cells in that column.
So I would like to achive that when i add a new record, the first cell jump to edit (its done) and my editor select the first element turn back like the others but with green background.

[SGaist]

I missed that part:

@Kaguro said in reach QComboBox (QStyledItemDelegate delegate) in QTableView from outside:

ui->tableView->edit(index);
ui->tableView->setItemDelegateForRow(getSelectedRow(),new ColorDelegate(Qt::green,ui->tableView));

I think you have an issue there, you are first starting the édition and then applying a delegate. Why do you set it at that time ?

[Kaguro]

@SGaist Sorry for super late, i have so many other task in my job nowadays. I will aswer it tomorrow as i can! Thanks your help!:)