Qt 5.11.3 - QML - treeView - resize row height depending of itemDelegate property - qt

Question

I'm trying to adapt the row height of a TreeView to automatically fit the content in its itemDelegate, but I have no clue how to do so.
So far, I tried to create a property "lines" in my itemDelegate object, but everytime I try to access it QML says my treeDeleg item is undefined.
Is there a way to get the result I want ?
EDIT : following what JarMan said, it's not possible to reference a delegateComponent by ID. So instead, is there's a way to automatically adapt the row height to its content ? Something along the lines of "height: auto" in CSS. This is really important because long values make my interface hard to read.
If all else fails, would there be a better component to create a tree styled view able to contain long, editable values ?
main.qml :
TreeView
{
id:treeView
anchors.top: rowInfo.bottom
anchors.left: parent.left
anchors.right: parent.right
anchors.bottom: parent.bottom
itemDelegate: TreeDelegate
{
id: treeDeleg
}
style: TreeViewStyle
{
id: styleTree
rowDelegate:Rectangle
{
id : rowDeleg
height: styleData.selected ? 75 : 25 * treeDeleg.lines
color:
{
var baseColor = styleData.alternate ? "white" : "#d9edf7"
return styleData.selected ? "yellow" : baseColor
}
}
}
Component.onCompleted:
{
treeView.model = Qt.binding(function()
{
if (typeof theModel !== "undefined")
{
return theModel;
}
else
{
return null;
}
});
}
TableViewColumn
{
id:column1
role: "Name"
title: "Name"
width: 450
}
TableViewColumn
{
id:column3
role: "Value"
title: "Value"
width: 400
}
TableViewColumn
{
id:column4
role: "Desc"
title: "Description"
width: 750
}
}
TreeDelegate.qml
Item
{
id: item
width : parent.width
height : 25
property var lines: null
TextEdit
{
id: text1
font.pixelSize: 14
readOnly: true
focus: false
width : parent.width
height: 25 * lineCount
anchors.left: parent.left
wrapMode: TextEdit.Wrap
text: (styleData.value !== null) ? (styleData.value.text + styleData.value.id) : "";
verticalAlignment: Text.AlignVCenter
horizontalAlignment: Text.AlignLeft
Component.onCompleted:
{
lines = text1.lineCount == 0 ? 1 : text1.lineCount;
console.log("Lines : " + lines);
}
}
}
```