I have a tree with nodes taken up from a DB query, developed in ExtJs 3.4.0.

I need to append to every treenode three strings: "add", "del", "mod", and make them clickable to permorm different action.
"add" should add a child node to the clicked one.
"mod" should let the user modify the node, opening an appropriate UI.
"del" should delete the node and any child node.

Is there any way to perform described action using ExtJs 3.4.0?

Thank you.