BasicTreeUI.FocusHandler (Java SE 11 & JDK 11 )

java.lang.Object
- javax.swing.plaf.basic.BasicTreeUI.FocusHandler

All Implemented Interfaces:

FocusListener, EventListener

Enclosing class:

BasicTreeUI
```
public class BasicTreeUI.FocusHandler
extends Object
implements FocusListener
```
Repaints the lead selection row when focus is lost/gained.

Constructor Summary

Constructors
Constructor Description

FocusHandler()

Method Summary

All Methods Instance Methods Concrete Methods
Modifier and Type	Method	Description
`void`	`focusGained(FocusEvent e)`	Invoked when focus is activated on the tree we're in, redraws the lead row.
`void`	`focusLost(FocusEvent e)`	Invoked when focus is activated on the tree we're in, redraws the lead row.

Methods declared in class java.lang.Object
clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

- Constructor Detail
  - FocusHandler
```
public FocusHandler()
```
- Method Detail
  - focusGained
```
public void focusGained(FocusEvent e)
```
    Invoked when focus is activated on the tree we're in, redraws the lead row.
    
    Specified by:
    
    focusGained in interface FocusListener
    
    Parameters:
    
    e - the event to be processed
  - focusLost
```
public void focusLost(FocusEvent e)
```
    Invoked when focus is activated on the tree we're in, redraws the lead row.
    
    Specified by:
    
    focusLost in interface FocusListener
    
    Parameters:
    
    e - the event to be processed