In ListView, how can you set the currentIndex or currentItem to a dynamically created element? - qt

Question

I got a listview with a c++ listmodel and a rectangle with a mousarea as delegate.
Internally in my code, my listmodel gets data appended, and I do
beginResetModel();
list.append(element);
endResetModel();
My model updates and the element appears just fine, but I am not able to set the currentIndex to the newly created item.
I am trying to use Component.onCompleted inside the delegate like this
Component.onCompleted: {
ListView.currentIndex = index;
console.log("Show List: ", ListView.currentIndex, index);
}
But the index in the log output says the currentIndex doesn't change after I set it to my models index.
I do the same inside my mousearea, in onClicked, and there it works fine.
How can I make my newly created listview element the currentItem/currentIndex?
I am using this currentIndex to change the color of the created element (this is inside my rectangle delegate)
color: ListView.currentIndex == index ? "lightred" : "darkred"
Are there better ways of going about what I am trying to do possibly?
Full code example below:
ListView {
id: listView
focus: true
clip: true
model: listModel
delegate: Rectangle {
id: listDelegate
color: listView.currentIndex == index ? "green" : "red"
height: 20
width: 100
radius: 2
Component.onCompleted: {
listView.currentIndex = index
console.log("Show List: ", listView.currentIndex, index)
}
MouseArea {
anchors.fill: parent
onClicked: {
listView.currentIndex = index
console.log("onClicked: ", listView.currentIndex, index)
}
}
}
}

Answer 1

You can just check for when the count changes, like this:
ListView {
...
onCountChanged: {
listView.currentIndex = listView.count - 1;
}
}