ListView: Use positionItemAtIndex when some items are invisible

[maxwell31]

Hi,

I have a listview and a model. The model has some roles, which determine if a delegate should be shown, and I set the visible property of the delegate according to those roles. On clicked I want to use positionViewAtIndex to move the clicked item to the center of the list, but this is giving me some problems (empty lines before and after that item). I might not fully understand which index positionViewAtIndex wants. The actual index in the listview of visible items or the model index.

The dummy code looks like this

delegate: Item {
   onSpecialRoleChanged: {
        positionViewAtIndex(model.index)
   }
}

Maybe its also a bad idea to call this function inside the delegate.

Btw, is there an easy way to get the visual index of an item in a listview (not the model index, as those things differ if we have invisible items)

Thanks!

[maxwell31]

Ok, the problem was that I seem to do the postionViewAtIndex at the wrong time. If the model gets updated, is there a signal i can catch after the listview updated itself?

[maxwell31]

Hm, my question started with wrong assumptions, so I will close this question