Question about custom view (or custom delegate)

[skuda]

Hello,
I need to create an editor table and i would like to hear your suggestions because i am not sure what could be the best method to get it done.

I have an sql model with a QTableView that i have to maintain like an alternate method to input data to the database so i will make the model for the new view a QAbstractProxyModel subclass so the two views get updated with the model, i have done this before without problem but never i needed a view like that.

Original SQL Model has this columns.
barcode | supplier code | description | size | units | price | total | date

And i need to get an editor like this:

barcode  | supplier code | description   | price | total price
15831500   090123-543      blue t-shirt     25$       275$
    |   Date         |  XXL  |  XL  |  L  |  M  |  S  | TOTAL
      2009-11-15         1      1      2     2     1      7
    |   Date         |  XXL  |  XL  |  L  |  M  |  S  | TOTAL
      2009-12-01         0      2      1     1     0      4

barcode  | supplier code | description   | price | total price
15831500   090123-543      blue t-shirt     25$       275$
    |   Date         |  XXL  |  XL  |  L  |  M  |  S  | TOTAL
      2009-11-15         1      1      2     2     1      7
    |   Date         |  XXL  |  XL  |  L  |  M  |  S  | TOTAL
      2009-12-01         0      2      1     1     0      4

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It seems like a QTreeView but the columns of parent and children are not in sync, and the children of other root items will not have the same number of size columns, i have thought make it a big column and add the headers in the cell with delegate paint method but then to me it does not seems like a treeview no more. I am sure will be much better ways to do that, any ideas please?

Regards,
Miguel Angel.

[skuda]

please nobody has a better suggestion or a confirmation of what i am thinking it is a correct way?