Class BasicTreeUI.KeyHandler

java.lang.Object

java.awt.event.KeyAdapter

javax.swing.plaf.basic.BasicTreeUI.KeyHandler

All Implemented Interfaces:: KeyListener, EventListener

Enclosing class:: BasicTreeUI

public class BasicTreeUI.KeyHandler extends KeyAdapter

This is used to get multiple key down events to appropriately generate events.

Field Summary

Modifier and Type	Field	Description
`protected boolean`	`isKeyDown`	Set to true while keyPressed is active.
`protected Action`	`repeatKeyAction`	Key code that is being generated for.

Constructor Summary

Constructor	Description
`KeyHandler()`	Constructs a `KeyHandler`.

Method Summary

Modifier and Type	Method	Description
`void`	`keyTyped(KeyEvent e)`	Invoked when a key has been typed.

Methods declared in class KeyAdapter

keyPressed, keyReleased

Methods declared in class Object

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

Field Details

repeatKeyAction

protected Action repeatKeyAction

Key code that is being generated for.

isKeyDown

protected boolean isKeyDown

Set to true while keyPressed is active.

Constructor Details

KeyHandler

public KeyHandler()

Constructs a KeyHandler.

Method Details

keyTyped

public void keyTyped(KeyEvent e)

Invoked when a key has been typed. Moves the keyboard focus to the first element whose first letter matches the alphanumeric key pressed by the user. Subsequent same key presses move the keyboard focus to the next object that starts with the same letter.

Specified by:: keyTyped in interface KeyListener
Overrides:: keyTyped in class KeyAdapter
Parameters:: e - the event to be processed

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https://docs.oracle.com/en/java/javase/25/docs/api/java.desktop/javax/swing/plaf/basic/BasicTreeUI.KeyHandler.html