Class BasicTreeUI.TreeExpansionHandler

java.lang.Object
javax.swing.plaf.basic.BasicTreeUI.TreeExpansionHandler
All Implemented Interfaces:
EventListener, TreeExpansionListener
Enclosing class:
BasicTreeUI
public class BasicTreeUI.TreeExpansionHandler extends Object implements TreeExpansionListener
Updates the TreeState in response to nodes expanding/collapsing.

Constructor Summary

Constructor Description
TreeExpansionHandler()
Constructs a TreeExpansionHandler.

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.

Methods declared in class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Constructor Details

TreeExpansionHandler

public TreeExpansionHandler()
Constructs a TreeExpansionHandler.

Method Details

treeExpanded

public void treeExpanded(TreeExpansionEvent event)
Called whenever an item in the tree has been expanded.
Specified by:
treeExpanded in interface TreeExpansionListener
Parameters:
event - a TreeExpansionEvent containing a TreePath object for the expanded node

treeCollapsed

public void treeCollapsed(TreeExpansionEvent event)
Called whenever an item in the tree has been collapsed.
Specified by:
treeCollapsed in interface TreeExpansionListener
Parameters:
event - a TreeExpansionEvent containing a TreePath object for the collapsed node

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https://docs.oracle.com/en/java/javase/17/docs/api/java.desktop/javax/swing/plaf/basic/BasicTreeUI.TreeExpansionHandler.html