javax.swing.plaf.basic

Class BasicTreeUI.TreePageAction

java.lang.Object

javax.swing.AbstractAction

javax.swing.plaf.basic.BasicTreeUI.TreePageAction

All Implemented Interfaces:

ActionListener ， Serializable ， Cloneable ， EventListener ， Action

Enclosing class:

BasicTreeUI

public class BasicTreeUI.TreePageAction
extends AbstractAction

TreePageAction处理页面向上和向下翻页事件。

Field Summary

Fields

Modifier and Type	Field and Description
protected int	direction 指定调整选择的方向。

Fields inherited from class javax.swing.AbstractAction

changeSupport, enabled

Fields inherited from 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

构造方法摘要

构造方法

Constructor and Description
TreePageAction(int direction, String name)

方法摘要

Modifier and Type	Method and Description
void	actionPerformed(ActionEvent e) 发生动作时调用。
boolean	isEnabled() 如果启用该操作，则返回true。

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

字段详细信息

direction

protected int direction

指定调整选择的方向。

构造方法详细信息

TreePageAction

public TreePageAction(int direction,
                      String name)

方法详细信息

actionPerformed

public void actionPerformed(ActionEvent e)

说明从界面： ActionListener复制

发生动作时调用。

isEnabled

public boolean isEnabled()

描述从类别复制： AbstractAction

如果启用该操作，则返回true。

Specified by:

isEnabled在界面 Action

重写：

isEnabled在 AbstractAction类

结果

如果启用该操作，则为true，否则为false

另请参见：

Action.isEnabled()