Sim Control Panel Find Next and Find Previous buttons are greyed out in Trick 19

[miltondean]

The Sim Control Panel in Trick 19.5.1 does not allow the user to select the Find Next or Find Previous buttons. These buttons were enabled and working in the Trick 17.4.0 version.

[miltondean]

When you insert any characters into the Find: box, it produces these messages:
Exception in thread "AWT-EventQueue-0" java.lang.ClassCastException: class java.util.regex.Matcher$ImmutableMatchResult cannot be cast to class java.util.regex.Matcher (java.util.regex.Matcher$ImmutableMatchResult and java.util.regex.Matcher are in module java.base of loader 'bootstrap')
at org.jdesktop.swingx.JXEditorPane$DocumentSearchable.updateStateAfterFound(JXEditorPane.java:740)
at org.jdesktop.swingx.JXEditorPane$DocumentSearchable.search(JXEditorPane.java:668)
at org.jdesktop.swingx.JXFindPanel.doSearch(JXFindPanel.java:211)
at org.jdesktop.swingx.JXFindPanel.doFind(JXFindPanel.java:191)
at org.jdesktop.swingx.JXFindPanel.match(JXFindPanel.java:157)
at org.jdesktop.swingx.AbstractPatternPanel.refreshPatternFromModel(AbstractPatternPanel.java:255)
at org.jdesktop.swingx.AbstractPatternPanel$1.propertyChange(AbstractPatternPanel.java:300)
at java.desktop/java.beans.PropertyChangeSupport.fire(PropertyChangeSupport.java:343)
at java.desktop/java.beans.PropertyChangeSupport.firePropertyChange(PropertyChangeSupport.java:335)
at java.desktop/java.beans.PropertyChangeSupport.firePropertyChange(PropertyChangeSupport.java:268)
at org.jdesktop.swingx.search.PatternModel.firePropertyChange(PatternModel.java:316)
at org.jdesktop.swingx.search.PatternModel.updatePattern(PatternModel.java:274)
at org.jdesktop.swingx.search.PatternModel.setRawText(PatternModel.java:234)
at org.jdesktop.swingx.AbstractPatternPanel.refreshModelFromDocument(AbstractPatternPanel.java:343)
at org.jdesktop.swingx.AbstractPatternPanel$3.insertUpdate(AbstractPatternPanel.java:373)
at java.desktop/javax.swing.text.AbstractDocument.fireInsertUpdate(AbstractDocument.java:226)
at java.desktop/javax.swing.text.AbstractDocument.handleInsertString(AbstractDocument.java:780)
at java.desktop/javax.swing.text.AbstractDocument.insertString(AbstractDocument.java:739)
at java.desktop/javax.swing.text.PlainDocument.insertString(PlainDocument.java:131)
at java.desktop/javax.swing.text.AbstractDocument.replace(AbstractDocument.java:698)
at java.desktop/javax.swing.text.JTextComponent.replaceSelection(JTextComponent.java:1339)
at java.desktop/javax.swing.text.DefaultEditorKit$DefaultKeyTypedAction.actionPerformed(DefaultEditorKit.java:884)
at java.desktop/javax.swing.SwingUtilities.notifyAction(SwingUtilities.java:1810)
at java.desktop/javax.swing.JComponent.processKeyBinding(JComponent.java:2947)
at java.desktop/javax.swing.JComponent.processKeyBindings(JComponent.java:2995)
at java.desktop/javax.swing.JComponent.processKeyEvent(JComponent.java:2909)
at java.desktop/java.awt.Component.processEvent(Component.java:6403)
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.dispatchKeyEvent(DefaultKeyboardFocusManager.java:883)
at java.desktop/java.awt.DefaultKeyboardFocusManager.preDispatchKeyEvent(DefaultKeyboardFocusManager.java:1150)
at java.desktop/java.awt.DefaultKeyboardFocusManager.typeAheadAssertions(DefaultKeyboardFocusManager.java:1020)
at java.desktop/java.awt.DefaultKeyboardFocusManager.dispatchEvent(DefaultKeyboardFocusManager.java:848)
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.Window.dispatchEventImpl(Window.java:2780)
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)

We are running:
java -version
openjdk version "17.0.2" 2022-01-18
OpenJDK Runtime Environment 21.9 (build 17.0.2+8)
OpenJDK 64-Bit Server VM 21.9 (build 17.0.2+8, mixed mode, sharing)

[hchen99]

It seems like the issue is coming from the Java library code itself. You don't encounter the error with the same OpenJDK version when using Trick 17.4.0? Will investigate this further.

[miltondean]

FYI,
The version of java we are using for the Trick 17 version is :
java -version
openjdk version "1.8.0_362"
OpenJDK Runtime Environment (build 1.8.0_362-b08)
OpenJDK 64-Bit Server VM (build 25.362-b08, mixed mode)

[hchen99]

Thanks for the info.

It turns out that the built-in matcher in the Java Swing GUI component for the status area calls a method to find a match and return the result. This matching process involves creating a new matcher instance with the state copied over. However, since JDK 9, the matcher result is an instance of a non-public class (new since JDK 9) within the matcher that cannot be cloned, thus the exception.

I used to have JDK 8 but not anymore. However, I observed the issue while testing JDK 11 and JDK 21 on my machine.

We'll need to have a customized approach to return the match results for Java Swing's JXEditorPane.