title: Is it possible to disable context menu items based on the selection on Treeview
body: <p>I will have some sort of nodes for a treeview as follows</p>
  
  <p>Root
  |-> some.txt(A text file which was added at runtime)
    |->Child(child for some.txt)
        |-> child1(child for child)</p>
  
  <p>I designed my context menu with some options as New and Remove</p>
  
  <p>What i need is when i righclick on Root, child or child i would like to disable the Remove option</p>