BasicTreeUI.TreeIncrementAction (Java 2 Platform SE v1.4.1) - JDK 5 Documentation v1.4.1, Java 2 SDK 英文文档

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Java^TM 2 Platform
Std. Ed. v1.4.1

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javax.swing.plaf.basic
Class BasicTreeUI.TreeIncrementAction

java.lang.Object
  |
  +--javax.swing.AbstractAction
        |
        +--javax.swing.plaf.basic.BasicTreeUI.TreeIncrementAction

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

Enclosing class:: BasicTreeUI

public class BasicTreeUI.TreeIncrementAction
extends AbstractAction

TreeIncrementAction is used to handle up/down actions. Selection is moved up or down based on direction.

Field Summary

protected int direction
          Specifies the direction to adjust the selection by.

Fields inherited from class javax.swing.AbstractAction

changeSupport, enabled

Fields inherited from interface javax.swing.Action

ACCELERATOR_KEY, ACTION_COMMAND_KEY, DEFAULT, LONG_DESCRIPTION, MNEMONIC_KEY, NAME, SHORT_DESCRIPTION, SMALL_ICON

Constructor Summary

BasicTreeUI.TreeIncrementAction(int direction, String name)


Method Summary

void actionPerformed(ActionEvent e)
          Invoked when an action occurs.

boolean isEnabled()
          Returns true if the action is enabled.

Methods inherited from class javax.swing.AbstractAction

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

Methods inherited from class java.lang.Object

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

Field Detail

direction

protected int direction

Specifies the direction to adjust the selection by.

Constructor Detail

BasicTreeUI.TreeIncrementAction

public BasicTreeUI.TreeIncrementAction(int direction,
                                       String name)

Method Detail

actionPerformed

public void actionPerformed(ActionEvent e)

Description copied from interface: ActionListener

Invoked when an action occurs.

isEnabled

public boolean isEnabled()

Description copied from class: AbstractAction

Returns true if the action is enabled.

Specified by:: isEnabled in interface Action
Overrides:: isEnabled in class AbstractAction

Returns:: true if the action is enabled, false otherwise
See Also:: Action.isEnabled()