Receive signal in newly added listview entry - qt

Question

I am trying to execute a function in a newly added entry to my ListView.
After adding an entry via button I want to execute the just added delegate's onNewEntry function. But only the old delegates execute it.
Minimal example:
import QtQuick 2.15
import QtQuick.Window 2.15
import QtQuick.Controls 2.0
Window {
id:root
width: 640
height: 480
visible: true
signal newEntry(int new_row)
property var someProperty
ListModel {
id:listmodel
ListElement {
name: "Bill Smith"
}
ListElement {
name: "John Brown"
}
ListElement {
name: "Sam Wise"
}
}
ListView{
id: listView
width:100
height:200
model: listmodel
delegate: ItemDelegate{
id:delegateId
Text{
text:name
}
Connections { //ISSUE!!!: the new delegate doesnt execute this, just the old ones
target: root
function onNewEntry(new_row){
console.debug(index)
console.debug(new_row)
if(new_row==index){ //doesnt get true
listView.currentIndex = index
setProductData()
}
function setProductData(){
root.someProperty=name
}
}
}
}
}
Button {
anchors.top: listView.bottom
id: btnAdd
text:"+"
onClicked:{
listmodel.append({"name":"Joe Black"})
newEntry(listView.count-1) //emit signal newEntry
}
}
}
output:
qml: 0
qml: 3
qml: 1
qml: 3
qml: 2
qml: 3
My already mentioned workaround is using ListView.onAdd in the delegate:
delegate: ItemDelegate{
ListView.onAdd: {
setProductData()
}
My question is: Why does the newly added entry doesnt listen to the newEntry signal. Thank you

Answer 1

It would be easier to just set the currentIndex after inserting the new row:
Button {
id: btnAdd
onClicked: {
sqlTableModel.insertNewEmptyRow()
listView.currentIndex = listView.count - 1
}
}

Answer 2

I found a better, probably more efficient solution:
delegate: ItemDelegate{
ListView.onAdd: {
listView.currentIndex=index
setProductData()
}
only the newly added delegate receives onAdd not all, like in the approach before.