Get the value of a combobox item delegate which is in a table

Koukoumaxe

Hello there !
I have a table which has a column that is a combo box(Qitemdelegate). Now i need to be able to retrieve the chosen value of the combo box when the user presses a certain button.
I googled all the possible combination but there aren't enough examples of combo boxes as item delegates.

pricelists->setItemSize((ui->tblPricelist->model()->data(ui->tblPricelist->model()->index(results.size(),2)).toString()));

This is what i use for getting the values from the table model. But if i'm not mistaken, the combo box isn't part of the model.

Any ideas ?

mrjj

Hi
Normally/often/as far as i know,
the combo box would be an editor to set the data
using a combo box (versus typing) so
the selected value would be part of the model/data?
User select value. Value stored for that row+col.

Maybe show your Delegate code?

Koukoumaxe

@mrjj I was actually looking that up.
This is my current Delegate code :

QtComboboxDelegate::QtComboboxDelegate(QStringList itemList, QObject *parent):itemList(itemList),
    QStyledItemDelegate(parent){

}

QWidget *QtComboboxDelegate::createEditor(QWidget *parent, const QStyleOptionViewItem &/* option */,
                                          const QModelIndex &/* index */) const{

  QComboBox* editor = new QComboBox(parent);
  for(unsigned int i = 0; i < itemList.size(); ++i){

    editor->addItem(itemList[i]);

  }
  return editor;
}

void QtComboboxDelegate::setEditorData(QWidget *editor, const QModelIndex &index) const{
  QComboBox *comboBox = static_cast<QComboBox*>(editor);
  int value = index.model()->data(index, Qt::EditRole).toInt();
  comboBox->setCurrentIndex(value);
}

void QtComboboxDelegate::setModelData(QWidget *editor, QAbstractItemModel *model,
                                   const QModelIndex &index) const
{
    QComboBox *comboBox = static_cast<QComboBox*>(editor);
    model->setData(index, comboBox->currentIndex(), Qt::EditRole);
}

void QtComboboxDelegate::updateEditorGeometry(QWidget *editor, const QStyleOptionViewItem &option,
                                            const QModelIndex &/* index */) const{
  editor->setGeometry(option.rect);
}

Similar to the delegate example made for the spinbox.

My current thought is to create a getComboValue() method in this class.
What is your thoughts ?

mrjj

@Koukoumaxe said:

Hi, im still not sure why yo u need to talk to combo box directly. :)
You call model->setData so after user selected something in combo box,
that value should be in the model?
So "the other place" could just get from model?

QModelIndex index = model->index(row, col, QModelIndex());
ui->view->model()->data(index).toString();

Koukoumaxe

oh ! so that is what you meant :)
But then shouldn't my initial way work ?
(i mean this :

pricelists->setItemSize((ui->tblPricelist->model()->data(ui->tblPricelist->model()->index(results.size(),2)).toString()));

)

mrjj

@Koukoumaxe
In theory yes, even its hard to say what
ui->tblPricelist->model()->index(results.size(),2) becomes.

But Im wondering if u need a emit DataChanged in setModelData but
as far as i know would only affect the view and the model should have
the combo box value.
If you single step, the model->setData(index, comboBox->currentIndex()
does set the index you are after?

Koukoumaxe

Well, your replies made me wonder enough to find where my mistake is !
It doesn't have to do with the code mentioned above.
That statement indeed gets the value from the Model.

The problem is created because i add to the model in two different methods.
That causes some logical errors at what the current index is e.t.c

Therefore my problem isn't relevant to my initial question. Should i close the thread as SOLVED ?

mrjj

@Koukoumaxe
Yes please do. Thank you

Ahmed000001

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