Class LinuxPopupMenuCanceler

java.lang.Object

java.awt.event.WindowAdapter

com.formdev.flatlaf.LinuxPopupMenuCanceler

All Implemented Interfaces:

ComponentListener, WindowFocusListener, WindowListener, WindowStateListener, EventListener, ChangeListener

class LinuxPopupMenuCanceler
extends WindowAdapter
implements ChangeListener, ComponentListener

Cancels (hides) popup menus on Linux.

On Linux, popups are not hidden under following conditions, which results in misplaced popups:

• window moved or resized
• window maximized or restored
• window iconified
• window deactivated (e.g. activated other application)

On Windows and macOS, popups are automatically hidden.

The implementation is similar to what's done in javax.swing.plaf.basic.BasicPopupMenuUI.MouseGrabber, but only hides popup in some conditions.

Field Summary

Fields

Modifier and Type	Field	Description
private MenuElement[]	lastPathSelectedPath
private Window	window

Constructor Summary

Constructors

Constructor	Description
LinuxPopupMenuCanceler()

Method Summary

Modifier and Type	Method	Description
private void	addWindowListeners(MenuElement selected)
private void	cancelPopupMenu()
void	componentHidden(ComponentEvent e)
void	componentMoved(ComponentEvent e)
void	componentResized(ComponentEvent e)
void	componentShown(ComponentEvent e)
private void	removeWindowListeners()
void	stateChanged(ChangeEvent e)
(package private) void	uninstall()
void	windowClosing(WindowEvent e)
void	windowDeactivated(WindowEvent e)
void	windowIconified(WindowEvent e)

Methods inherited from class WindowAdapter

windowActivated, windowClosed, windowDeiconified, windowGainedFocus, windowLostFocus, windowOpened, windowStateChanged

Methods inherited from class Object

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

Field Details

lastPathSelectedPath

private MenuElement[] lastPathSelectedPath

window

private Window window

Constructor Details

LinuxPopupMenuCanceler

LinuxPopupMenuCanceler()

Method Details

uninstall

void uninstall()

addWindowListeners

private void addWindowListeners(MenuElement selected)

removeWindowListeners

private void removeWindowListeners()

cancelPopupMenu

private void cancelPopupMenu()

stateChanged

public void stateChanged(ChangeEvent e)

Specified by:

stateChanged in interface ChangeListener

windowIconified

public void windowIconified(WindowEvent e)

Specified by:

windowIconified in interface WindowListener

Overrides:

windowIconified in class WindowAdapter

windowDeactivated

public void windowDeactivated(WindowEvent e)

Specified by:

windowDeactivated in interface WindowListener

Overrides:

windowDeactivated in class WindowAdapter

windowClosing

public void windowClosing(WindowEvent e)

Specified by:

windowClosing in interface WindowListener

Overrides:

windowClosing in class WindowAdapter

componentResized

public void componentResized(ComponentEvent e)

Specified by:

componentResized in interface ComponentListener

componentMoved

public void componentMoved(ComponentEvent e)

Specified by:

componentMoved in interface ComponentListener

componentShown

public void componentShown(ComponentEvent e)

Specified by:

componentShown in interface ComponentListener

componentHidden

public void componentHidden(ComponentEvent e)

Specified by:

componentHidden in interface ComponentListener