BasicTreeUI.TreePageAction (Java SE 9 & JDK 9 )

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 handles page up and page down events.

See Also:

Serialized Form

Field Summary

Fields
Modifier and Type Field Description

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, DISPLAYED_MNEMONIC_INDEX_KEY, LARGE_ICON_KEY, LONG_DESCRIPTION, MNEMONIC_KEY, NAME, SELECTED_KEY, SHORT_DESCRIPTION, SMALL_ICON

Constructor Summary

Constructors
Constructor Description

TreePageAction(int direction, String name)
Constructs a new instance of TreePageAction.

Method Summary

All Methods Instance Methods Concrete Methods
Modifier and Type	Method	Description
`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 interface javax.swing.Action
accept

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
  - TreePageAction
```
public TreePageAction(int direction,
                      String name)
```
    Constructs a new instance of TreePageAction.
    
    Parameters:
    
    direction - the direction
    
    name - the name of action
- Method Detail
  - actionPerformed
```
public void actionPerformed(ActionEvent e)
```
    Description copied from interface: ActionListener
    
    Invoked when an action occurs.
    
    Parameters:
    
    e - the event to be processed
  - 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()