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.
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.
(tree-will-collapse this event)Invoked whenever a node in the tree is about to be collapsed.
event - javax.swing.event.TreeExpansionEvent
throws: javax.swing.tree.ExpandVetoException
Invoked whenever a node in the tree is about to be collapsed. event - `javax.swing.event.TreeExpansionEvent` throws: javax.swing.tree.ExpandVetoException
(tree-will-expand this event)Invoked whenever a node in the tree is about to be expanded.
event - javax.swing.event.TreeExpansionEvent
throws: javax.swing.tree.ExpandVetoException
Invoked whenever a node in the tree is about to be expanded. event - `javax.swing.event.TreeExpansionEvent` throws: javax.swing.tree.ExpandVetoException
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