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- 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
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https://docs.oracle.com/en/java/javase/11/docs/api/java.desktop/javax/swing/event/TreeExpansionListener.html