Set focus to this node.
Implementation would usually assign tree.focus to self for this to take effect. It is legal, however, for this method to redirect the focus to another node (by calling its focus() method), or ignore the request.
See Implementation
Set focus to this node.
Implementation would usually assign tree.focus to self for this to take effect. It is legal, however, for this method to redirect the focus to another node (by calling its focus() method), or ignore the request.