Class BasicTreeUI.TreeTraverseAction

java.lang.Object

javax.swing.AbstractAction

javax.swing.plaf.basic.BasicTreeUI.TreeTraverseAction

All Implemented Interfaces:: ActionListener, Serializable, Cloneable, EventListener, Action

Enclosing class:: BasicTreeUI

public class BasicTreeUI.TreeTraverseAction extends AbstractAction

TreeTraverseAction is the action used for left/right keys. Will toggle the expandedness of a node, as well as potentially incrementing the selection.

Field Summary

Modifier and Type	Field	Description
`protected int`	`direction`	Determines direction to traverse, 1 means expand, -1 means collapse.

Fields declared in class javax.swing.AbstractAction

changeSupport, enabled

Fields declared in interface javax.swing.Action

ACCELERATOR_KEY, ACTION_COMMAND_KEY, DEFAULT, DISPLAYED_MNEMONIC_INDEX_KEY, LARGE_ICON_KEY, LONG_DESCRIPTION, MNEMONIC_KEY, NAME, SELECTED_KEY, SHORT_DESCRIPTION, SMALL_ICON

Constructor Summary

Constructor	Description
`TreeTraverseAction(int direction, String name)`	Constructs a new instance of `TreeTraverseAction`.

Method Summary

Modifier and Type	Method	Description
`void`	`actionPerformed(ActionEvent e)`	Invoked when an action occurs.

Methods declared in class javax.swing.AbstractAction

addPropertyChangeListener, clone, firePropertyChange, getKeys, getPropertyChangeListeners, getValue, isEnabled, putValue, removePropertyChangeListener, setEnabled

Methods declared in class java.lang.Object

equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Methods declared in interface javax.swing.Action

accept

Field Details

direction

protected int direction

Determines direction to traverse, 1 means expand, -1 means collapse.

Constructor Details

TreeTraverseAction

public TreeTraverseAction(int direction, String name)

Constructs a new instance of TreeTraverseAction.

Parameters:: direction - the direction; name - the name of action

Method Details

actionPerformed

public void actionPerformed(ActionEvent e)

Description copied from interface: ActionListener

Invoked when an action occurs.

Parameters:: e - the event to be processed

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https://docs.oracle.com/en/java/javase/17/docs/api/java.desktop/javax/swing/plaf/basic/BasicTreeUI.TreeTraverseAction.html