Adding Components Dynamically

[tomleb]

Hi,

here's what I'm trying to do.

I have a component of type A (a rectangle) and a component of type B (another rectangle).

I want to dynamically add a few component A to a ListView. Then, I want to dynamically add a few components B to each item A in the ListView.

Also, I have a 'controller' qobject that is registered and is used to add A's and B's.

Here's a visual reprensentation of the structure I'm trying to build:

ListView:
    - A_1:
          - B_11
          - B_12
          - B_13
    - A_2:
          - B_21
          - B_12
      ...
     etc

I have tried a lot of things.

My 'last' attempt is a ListView with a DelegateModel and I add models using append (shown below)

ListView {
   model: DelegateModel {
      model: ListModel {
         id: listModel
      }
      delegate: A {
          ...
      }
  }
}
....
// Code used to add an item
listModel.append({...});

This works fine, but then I'm stuck trying to figure out how to dynamically add components B to each item.
I have something like this (which doesn't work):

 onBAdded: {                                                         
            for (var i = 0; i < listModel.count; i++) {
                var item = myModel.items.get(i) 
                // Each A's have id (aName)
                if (item.model.aName === aName) {
                    var component = Qt.createComponent("B.qml")
                    // This doesn't work (nothing is shown, if I replace item with root, it shows)
                    component.createObject(item, {
                                                            x: 10,
                                                            y: 10,
                                                            z: 100
                                                        });                                                       
                }                                                                
            }             

I might be going totally wrong about this whole thing. I feel this should be a very simple thing to do.
Thanks.