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Class BasicMenuUI.ChangeHandler

java.lang.Object

javax.swing.plaf.basic.BasicMenuUI.ChangeHandler

All Implemented Interfaces:: EventListener, ChangeListener

Enclosing class:: BasicMenuUI

public class BasicMenuUI.ChangeHandler extends Object implements ChangeListener

As of Java 2 platform 1.4, this previously undocumented class is now obsolete. KeyBindings are now managed by the popup menu.

Field Summary

Modifier and Type	Field	Description
`boolean`	`isSelected`	`true` if an item of popup menu is selected.
`JMenu`	`menu`	The instance of `JMenu`.
`BasicMenuUI`	`ui`	The instance of `BasicMenuUI`.
`Component`	`wasFocused`	The component that was focused.

Constructor Summary

Constructor	Description
`ChangeHandler(JMenu m, BasicMenuUI ui)`	Constructs a new instance of `ChangeHandler`.

Method Summary

Modifier and Type	Method	Description
`void`	`stateChanged(ChangeEvent e)`	Invoked when the target of the listener has changed its state.

Methods declared in class java.lang.Object

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

Field Details

ui

public BasicMenuUI ui

The instance of BasicMenuUI.

isSelected

public boolean isSelected

true if an item of popup menu is selected.

wasFocused

public Component wasFocused

The component that was focused.

Constructor Details

ChangeHandler

public ChangeHandler(JMenu m, BasicMenuUI ui)

Constructs a new instance of ChangeHandler.

Parameters:: m - an instance of JMenu; ui - an instance of BasicMenuUI

Method Details

stateChanged

public void stateChanged(ChangeEvent e)

Description copied from interface: ChangeListener

Invoked when the target of the listener has changed its state.

Specified by:: stateChanged in interface ChangeListener
Parameters:: e - a ChangeEvent object

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https://docs.oracle.com/en/java/javase/21/docs/api/java.desktop/javax/swing/plaf/basic/BasicMenuUI.ChangeHandler.html