Interface TreeExpansionListener

All Superinterfaces:
EventListener
All Known Implementing Classes:
BasicTreeUI.TreeExpansionHandler, JTree.AccessibleJTree 
public interface TreeExpansionListener
extends EventListener

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

Methods

Modifier and Type Method Description
void treeCollapsed​(TreeExpansionEvent event)

Called whenever an item in the tree has been collapsed.
void treeExpanded​(TreeExpansionEvent event)

Called whenever an item in the tree has been expanded.

Methods

treeExpanded

void treeExpanded(TreeExpansionEvent event)

Called whenever an item in the tree has been expanded.

Parameters:
event - a TreeExpansionEvent containing a TreePath object for the expanded node

treeCollapsed

void treeCollapsed(TreeExpansionEvent event)

Called whenever an item in the tree has been collapsed.

Parameters:
event - a TreeExpansionEvent containing a TreePath object for the collapsed node