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Class ComboBoxUI

java.lang.Object

javax.swing.plaf.ComponentUI

javax.swing.plaf.ComboBoxUI

Direct Known Subclasses:: BasicComboBoxUI, MultiComboBoxUI

public abstract class ComboBoxUI extends ComponentUI

Pluggable look and feel interface for JComboBox.

Constructor Summary

ComboBoxUI()

Modifier	Constructor	Description
`protected`	Constructor for subclasses to call.

Method Summary

Modifier and Type	Method	Description
`abstract boolean`	`isFocusTraversable(JComboBox<?> c)`	Determine whether or not the combo box itself is traversable
`abstract boolean`	`isPopupVisible(JComboBox<?> c)`	Determine the visibility of the popup
`abstract void`	`setPopupVisible(JComboBox<?> c, boolean v)`	Set the visibility of the popup

Methods declared in class javax.swing.plaf.ComponentUI

contains, createUI, getAccessibleChild, getAccessibleChildrenCount, getBaseline, getBaselineResizeBehavior, getMaximumSize, getMinimumSize, getPreferredSize, installUI, paint, uninstallUI, update

Methods declared in class java.lang.Object

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

Constructor Details

ComboBoxUI

protected ComboBoxUI()

Constructor for subclasses to call.

Method Details

setPopupVisible

public abstract void setPopupVisible(JComboBox<?> c, boolean v)

Set the visibility of the popup

Parameters:: c - a JComboBox; v - a boolean determining the visibility of the popup

isPopupVisible

public abstract boolean isPopupVisible(JComboBox<?> c)

Determine the visibility of the popup

Parameters:: c - a JComboBox
Returns:: true if popup of the JComboBox is visible

isFocusTraversable

public abstract boolean isFocusTraversable(JComboBox<?> c)

Determine whether or not the combo box itself is traversable

Parameters:: c - a JComboBox
Returns:: true if the given JComboBox is traversable

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