Module java.desktop

Interface TreeWillExpandListener

    • Method Detail

      • treeWillExpand

        void treeWillExpand​(TreeExpansionEvent event)
                     throws ExpandVetoException
        Invoked whenever a node in the tree is about to be expanded.
        Parameters:
        event - a TreeExpansionEvent containing a TreePath object for the node
        Throws:
        ExpandVetoException - to signify expansion has been canceled
      • treeWillCollapse

        void treeWillCollapse​(TreeExpansionEvent event)
                       throws ExpandVetoException
        Invoked whenever a node in the tree is about to be collapsed.
        Parameters:
        event - a TreeExpansionEvent containing a TreePath object for the node
        Throws:
        ExpandVetoException - to signify collapse has been canceled