Hello, I'm trying to acomplish the following tree behavior: A tree node can only be closed if their children are leafs or if their are closed. I've added handlers for itemClose, and through the evt.item i can acces the node data, but i don't know how to check wether the corresponding tree node has children and if these children are open or closed and how to prevent a node from closing ... Thank you very much, i'm sorry if the post is a bit confusing
