Invalid Location

[mumbel]

Invalid location
java.lang.IllegalArgumentException: Invalid location
	at java.desktop/javax.swing.text.JTextComponent.getSelectedText(JTextComponent.java:1784)
	at java.desktop/javax.swing.text.DefaultCaret.updateSystemSelection(DefaultCaret.java:1390)
	at java.desktop/javax.swing.text.DefaultCaret.focusGained(DefaultCaret.java:385)
	at com.formdev.flatlaf.ui.FlatCaret.focusGained(FlatCaret.java:150)
	at java.desktop/java.awt.AWTEventMulticaster.focusGained(AWTEventMulticaster.java:228)
	at java.desktop/java.awt.Component.processFocusEvent(Component.java:6515)
	at java.desktop/java.awt.Component.processEvent(Component.java:6382)
	at java.desktop/java.awt.Container.processEvent(Container.java:2266)
	at java.desktop/java.awt.Component.dispatchEventImpl(Component.java:5001)
	at java.desktop/java.awt.Container.dispatchEventImpl(Container.java:2324)
	at java.desktop/java.awt.Component.dispatchEvent(Component.java:4833)
	at java.desktop/java.awt.KeyboardFocusManager.redispatchEvent(KeyboardFocusManager.java:1952)
	at java.desktop/java.awt.DefaultKeyboardFocusManager.typeAheadAssertions(DefaultKeyboardFocusManager.java:1061)
	at java.desktop/java.awt.DefaultKeyboardFocusManager.dispatchEvent(DefaultKeyboardFocusManager.java:687)
	at java.desktop/java.awt.Component.dispatchEventImpl(Component.java:4882)
	at java.desktop/java.awt.Container.dispatchEventImpl(Container.java:2324)
	at java.desktop/java.awt.Component.dispatchEvent(Component.java:4833)
	at java.desktop/java.awt.EventQueue.dispatchEventImpl(EventQueue.java:773)
	at java.desktop/java.awt.EventQueue$4.run(EventQueue.java:722)
	at java.desktop/java.awt.EventQueue$4.run(EventQueue.java:716)
	at java.base/java.security.AccessController.doPrivileged(AccessController.java:399)
	at java.base/java.security.ProtectionDomain$JavaSecurityAccessImpl.doIntersectionPrivilege(ProtectionDomain.java:86)
	at java.base/java.security.ProtectionDomain$JavaSecurityAccessImpl.doIntersectionPrivilege(ProtectionDomain.java:97)
	at java.desktop/java.awt.EventQueue$5.run(EventQueue.java:746)
	at java.desktop/java.awt.EventQueue$5.run(EventQueue.java:744)
	at java.base/java.security.AccessController.doPrivileged(AccessController.java:399)
	at java.base/java.security.ProtectionDomain$JavaSecurityAccessImpl.doIntersectionPrivilege(ProtectionDomain.java:86)
	at java.desktop/java.awt.EventQueue.dispatchEvent(EventQueue.java:743)
	at java.desktop/java.awt.EventDispatchThread.pumpOneEventForFilters(EventDispatchThread.java:203)
	at java.desktop/java.awt.EventDispatchThread.pumpEventsForFilter(EventDispatchThread.java:124)
	at java.desktop/java.awt.EventDispatchThread.pumpEventsForHierarchy(EventDispatchThread.java:113)
	at java.desktop/java.awt.EventDispatchThread.pumpEvents(EventDispatchThread.java:109)
	at java.desktop/java.awt.EventDispatchThread.pumpEvents(EventDispatchThread.java:101)
	at java.desktop/java.awt.EventDispatchThread.run(EventDispatchThread.java:90)

Came across this clicking a window (I think, not 100% what triggered it) in Ghidra 10.3.1 (NationalSecurityAgency/ghidra#5539), which ships with FlatLaf 2.6, and using ubuntu 22.04 and JDK 17.0.7. Not sure if there's enough info to go off of, but figured worth reporting here too in case.

[DevCharly]

The exception is triggered when focusing a text component.
Can you remember what text component you clicked on or which was focused?
Is this reproducible?

[DevCharly]

Was able to reproduce such an exception.

Occurs only on Linux for JFormattedTextField if there is a focus gained listener that invokes JFormattedTextField.setDocument() on that text field.

Here is a test case. To reproduce

1. start app on Linux
2. press Tab key to move focus to formatted text field
3. press Tab key to move focus to text field
4. press Tab key to move focus again to formatted text field --> exception

import java.awt.BorderLayout;
import java.awt.Container;
import java.awt.event.FocusAdapter;
import java.awt.event.FocusEvent;
import javax.swing.JFormattedTextField;
import javax.swing.JFrame;
import javax.swing.JTextField;
import javax.swing.SwingUtilities;
import javax.swing.text.PlainDocument;
import com.formdev.flatlaf.FlatLightLaf;

public class TestCaret
{
    public static void main( String[] args ) {
        SwingUtilities.invokeLater( () -> {
            FlatLightLaf.setup();

            JFrame frame = new JFrame();
            frame.setDefaultCloseOperation( JFrame.EXIT_ON_CLOSE );

            JFormattedTextField ftf = new JFormattedTextField();
            ftf.setText( "formatted text field" );
            ftf.setColumns( 30 );
            ftf.addFocusListener( new FocusAdapter() {
                @Override
                public void focusGained( FocusEvent e ) {
                    ftf.setDocument( new PlainDocument() );
                }
            } );

            Container contentPane = frame.getContentPane();
            contentPane.add( new JTextField( "text field" ), BorderLayout.NORTH );
            contentPane.add( ftf, BorderLayout.CENTER );

            frame.pack();
            frame.setLocationRelativeTo( null );
            frame.setVisible( true );
        } );
    }
}

[DevCharly]

Thanks for reporting 👍

fixed in latest 3.2-SNAPSHOT: https://github.com/JFormDesigner/FlatLaf#snapshots