I am using flat mat tree , i want to show parent child relation with border, like in this work https://tina-material-tree.firebaseapp.com/simple-tree . Please help. Is there any way to get this work code ??
This is my work so far https://stackblitz.com/edit/mat-tree-with-dragging . I'm also using drag and drop in this work.
onSelectionChangeevent that is added changing the behavior?