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- All Superinterfaces:
- EventListener
public interface TreeWillExpandListener extends EventListener
The listener that's notified when a tree expands or collapses a node. For further information and examples see How to Write a Tree-Will-Expand Listener, a section in The Java Tutorial.
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Method Summary
Methods Modifier and Type Method and Description void
treeWillCollapse(TreeExpansionEvent event)
Invoked whenever a node in the tree is about to be collapsed.void
treeWillExpand(TreeExpansionEvent event)
Invoked whenever a node in the tree is about to be expanded.
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Method Detail
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treeWillExpand
void treeWillExpand(TreeExpansionEvent event) throws ExpandVetoException
Invoked whenever a node in the tree is about to be expanded.- Throws:
ExpandVetoException
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treeWillCollapse
void treeWillCollapse(TreeExpansionEvent event) throws ExpandVetoException
Invoked whenever a node in the tree is about to be collapsed.- Throws:
ExpandVetoException
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