I was thinking I need a component similar to ListModel, but I need to extend it to expose a readonly bool property such as "all list elements were within minimum and maximum limit" so I can do logic outside the component the determine certain things. How should I go about doing this extending a boolean property based on model's contents?
I guess naive way is to just add the qml property and do javascript loop on QML side to check all model contents but that might not be so good performance