EventListener
public interface TreeWillExpandListener extends EventListener
void
treeWillCollapse(TreeExpansionEvent event)
treeWillExpand(TreeExpansionEvent event)
void treeWillExpand(TreeExpansionEvent event) throws ExpandVetoException
event
TreeExpansionEvent
TreePath
ExpandVetoException
void treeWillCollapse(TreeExpansionEvent event) throws ExpandVetoException
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