Selections in a TableView with a QItemSelectionModel

[xelag]

Hello,

I have a problem with a Model-View-Controler.

I can't get the index of the selected items in my view. It seems that there are no connection between my model and my selection model

Here is my MVC,

• model : QAbstractTableModel
• view : QTableView Proxy
• proxy : QSortFilterProxyModel
• delegate : QAbstractItemDelegate
• selection model : QItemSelectionModel

My view selection setting is set as :

setSelectionMode (QAbstractItemView::ExtendedSelection);
setSelectionBehavior (QAbstractItemView::SelectRows);

setSelectionMode (QAbstractItemView::ExtendedSelection);
setSelectionBehavior (QAbstractItemView::SelectRows);

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In my model, each data gets a Qt::ItemFlags as Qt::ItemIsSelectable :

Qt::ItemFlags DSTableModel::flags(const QModelIndex &_index) const
{
    if (!_index.isValid())
    {
        return QAbstractItemModel::flags(_index) | Qt::ItemIsEnabled;
    }
    return QAbstractItemModel::flags(_index) | Qt::ItemIsEditable | Qt::ItemIsSelectable;
}

Qt::ItemFlags DSTableModel::flags(const QModelIndex &_index) const
{
    if (!_index.isValid())
    {
        return QAbstractItemModel::flags(_index) | Qt::ItemIsEnabled;
    }
    return QAbstractItemModel::flags(_index) | Qt::ItemIsEditable | Qt::ItemIsSelectable;
}

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In my main program, i use this slot function to delete the selected rows in the view:

void DSMainWindow::deleteDataSlot()
{
    //Get the QModelIndex list of items selected in the view
    QModelIndexList tmpModelIndexList = selectionModel->selectedIndexes();
 
    if(tmpModelIndexList.count()==0)
    {
        //---> Always comes here because no items have been detected selected, despite 
        //the fact that the user has selected rows for real in the view !!!!!!!!!!!!!!!!!!
       QMessageBox::information(this, tr("DataSearch delete data"),
                    tr("No data is selected"),
                    QMessageBox::Ok,0,0);
        return;
    }
    else{}
 
    int tmpMsgRet = QMessageBox::question(this, tr("DataSearch delete data"),
                    tr("Are you sure you want to delete the selected data?") +
                    tr("\nThe data deleted will be lost."),
                    QMessageBox::Yes,QMessageBox::No | QMessageBox::Default,0);
 
    if (tmpMsgRet == QMessageBox::Yes)
    {
        //list used to store the row already deleted (multiple QModelIndex for a row
        QList<int> tmpRowRemoved;
 
        int currentRow;
 
 
        for(int i=0; i<tmpModelIndexList.count();i++)
        {
            currentRow = tmpModelIndexList.at(i).row();
 
            //test if the row has not been deleted yet
            if(tmpRowRemoved.indexOf(currentRow) > 0)
            {
                //delete the row in the model
                tableModel->removeRows(currentRow,1,tableView->currentIndex());
                tmpRowRemoved.append(currentRow);
            }
        }
    }
    else{}
}

void DSMainWindow::deleteDataSlot()
{
    //Get the QModelIndex list of items selected in the view
    QModelIndexList tmpModelIndexList = selectionModel->selectedIndexes();

    if(tmpModelIndexList.count()==0)
    {
        //---> Always comes here because no items have been detected selected, despite 
        //the fact that the user has selected rows for real in the view !!!!!!!!!!!!!!!!!!
       QMessageBox::information(this, tr("DataSearch delete data"),
                    tr("No data is selected"),
                    QMessageBox::Ok,0,0);
        return;
    }
    else{}
    
    int tmpMsgRet = QMessageBox::question(this, tr("DataSearch delete data"),
                    tr("Are you sure you want to delete the selected data?") +
                    tr("\nThe data deleted will be lost."),
                    QMessageBox::Yes,QMessageBox::No | QMessageBox::Default,0);

    if (tmpMsgRet == QMessageBox::Yes)
    {
        //list used to store the row already deleted (multiple QModelIndex for a row
        QList<int> tmpRowRemoved;
        
        int currentRow;
        
        
        for(int i=0; i<tmpModelIndexList.count();i++)
        {
            currentRow = tmpModelIndexList.at(i).row();
            
            //test if the row has not been deleted yet
            if(tmpRowRemoved.indexOf(currentRow) > 0)
            {
                //delete the row in the model
                tableModel->removeRows(currentRow,1,tableView->currentIndex());
                tmpRowRemoved.append(currentRow);
            }
        }
    }
    else{}
}

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Can the delegate or the proxy cause a problem? Is there something to add in the model?

Please help. I'm searching for a long time where it bugs... But those MVCs are quite tough to debug...

Thx,
Xelag