Java Platform 1.2
Beta 4

Interface com.sun.java.swing.event.TreeWillExpandListener


public abstract interface TreeWillExpandListener
extends EventListener
The listener that's notified when a tree expands or collapses a node.


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.

treeWillCollapse

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

Java Platform 1.2
Beta 4

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