BasicTreeUI.FocusHandler (Java SE 25 & JDK 25)
Description: declaration: module: java.desktop, package: javax.swing.plaf.basic, class: BasicTreeUI, class: FocusHandler
Keywords: javax.swing.plaf.basic.BasicTreeUI.FocusHandler class

# Class BasicTreeUI.FocusHandler

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()`
  Constructs a `FocusHandler`.

- ## Method Summary

  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 Object

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

- ## Constructor Details

  - ### FocusHandler

    public FocusHandler()
    Constructs a `FocusHandler`.

- ## Method Details

  - ### 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