- 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.
Method Summary
All Methods Instance Methods Abstract Methods Modifier and Type Method Description voidtreeCollapsed(TreeExpansionEvent event)Called whenever an item in the tree has been collapsed.voidtreeExpanded(TreeExpansionEvent event)Called whenever an item in the tree has been expanded.
Method Detail
treeExpanded
void treeExpanded(TreeExpansionEvent event)
Called whenever an item in the tree has been expanded.- Parameters:
event- aTreeExpansionEventcontaining aTreePathobject for the expanded node
treeCollapsed
void treeCollapsed(TreeExpansionEvent event)
Called whenever an item in the tree has been collapsed.- Parameters:
event- aTreeExpansionEventcontaining aTreePathobject for the collapsed node