W3cubDocs

/OpenJDK 21

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.

Method Summary

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.

Method Details

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

© 1993, 2023, Oracle and/or its affiliates. All rights reserved.
Documentation extracted from Debian's OpenJDK Development Kit package.
Licensed under the GNU General Public License, version 2, with the Classpath Exception.
Various third party code in OpenJDK is licensed under different licenses (see Debian package).
Java and OpenJDK are trademarks or registered trademarks of Oracle and/or its affiliates.
https://docs.oracle.com/en/java/javase/21/docs/api/java.desktop/javax/swing/event/TreeExpansionListener.html