beginInsertRows seems not to be working

[faldzip]

It is hard for me to understand what you are doing :P QAbstractItemModel::setData() is for setting data to existing index. You set your value to your internal structure "node" so I don't see any reason for model to insert any additional row - so there is no reason to call beginInsertRows() or endInsertRows(), which dont insert any rows - just notify view etc about inserting new rows. And I suggest implementing rows inserting in QAbstractItemModel::insertRow() or QAbstractItemModel::insertRows().

[ugurkoltuk]

Here is the story about inserting rows in setData:

this is a kind of tree xml editor, something similar to Simple DOM Model Example (http://doc.trolltech.com/4.2/itemvie...edommodel.html). I already have QAbstractItemModel::insertRow() and QAbstractItemModel::insertRows() implemented, and I called beginInsertRows and it works fine.

What I did here is this: In DOM specification(http://www.w3.org/TR/REC-DOM-Level-1/), it says that any node which has a text value, will be interpreted like having it's first child element(a text node) with the value of the text.

So when editing an existing xml file, if there is a node not having any child or value, when user wants to set its value, i should add a child to this node (before any child) and it should be a text node. anyway, i somehow implemented it, and when i edit the value of a node which didn't have any value before, view shows nothing, but when i save file and reload it, i see that actually internally what i wanted has happened and the node has a new child element (#text) and value is set.

my question is, why i don't see updated tree? any ideas? I can paste here any code on request.

[faldzip]

the thing is that if you use setData() it is meant that you set data to the existing index. How are editing value node if there is no such node? I don't understand it, because you want to edit not existing index in your model which will make this model to insert this index...
Then my advice is to insert a new node (index) with insertRow() and then edit its value.