EventListener
, TreeExpansionListener
BasicTreeUI
public class BasicTreeUI.TreeExpansionHandler extends Object implements TreeExpansionListener
Constructor | Description |
---|---|
TreeExpansionHandler() |
Constructs a TreeExpansionHandler . |
Modifier and Type | Method | Description |
---|---|---|
void |
treeCollapsed |
Called whenever an item in the tree has been collapsed. |
void |
treeExpanded |
Called whenever an item in the tree has been expanded. |
public TreeExpansionHandler()
TreeExpansionHandler
.public void treeExpanded(TreeExpansionEvent event)
treeExpanded
in interface TreeExpansionListener
event
- a TreeExpansionEvent
containing a TreePath
object for the expanded nodepublic void treeCollapsed(TreeExpansionEvent event)
treeCollapsed
in interface TreeExpansionListener
event
- a TreeExpansionEvent
containing a TreePath
object for the collapsed node
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https://docs.oracle.com/en/java/javase/21/docs/api/java.desktop/javax/swing/plaf/basic/BasicTreeUI.TreeExpansionHandler.html