javax.swing.event
Interface TreeWillExpandListener

All Superinterfaces:
EventListener
public interface TreeWillExpandListener
extends EventListener

The listener that's notified when a tree expands or collapses a node. For further information and examples see How to Write a Tree-Will-Expand Listener, a section in The Java Tutorial.

 

Method Summary

 void treeWillCollapse(TreeExpansionEvent event)
    Invoked whenever a node in the tree is about to be collapsed.
 void treeWillExpand(TreeExpansionEvent event)
    Invoked whenever a node in the tree is about to be expanded.
 

 

Method Detail

 

treeWillExpand

public void treeWillExpand(TreeExpansionEvent event)
                    throws ExpandVetoException
Invoked whenever a node in the tree is about to be expanded.

ExpandVetoException

 

treeWillCollapse

public void treeWillCollapse(TreeExpansionEvent event)
                      throws ExpandVetoException
Invoked whenever a node in the tree is about to be collapsed.

ExpandVetoException