Fix IncorrectOperationException when editor disposed before async PsiTreeChangeListener registration

CHANGELOG.md

@@ -15,6 +15,7 @@
 ### Fixed
 
 - PluginException: Invalid PSI Element CsvFile when file is invalidated during annotation, intention actions, or inspection fixes
+- IncorrectOperationException: parent CsvTableEditorSwing already disposed when async PsiTreeChangeListener registration completes
 
 ## 4.2.0 - Jan 26, 2026
 

src/main/java/net/seesharpsoft/intellij/plugins/csv/editor/table/CsvTableModelBase.java

@@ -20,6 +20,7 @@
 
 public class CsvTableModelBase<T extends PsiFileHolder> implements CsvTableModel {
     private final T myPsiFileHolder;
+    private volatile boolean myDisposed = false;
 
     private int myCachedRowCount = -1;
     private int myCachedColumnCount = -1;
@@ -55,7 +56,7 @@ protected void addPsiTreeChangeListener() {
                 .nonBlocking(this::getPsiFile)
                 .coalesceBy(this)
                 .finishOnUiThread(ModalityState.any(), pf -> {
-                    if (pf == null) return;
+                    if (pf == null || myDisposed) return;
                     PsiManager mgr = pf.getManager();
                     if (mgr == null) return;
                     mgr.addPsiTreeChangeListener(myPsiTreeChangeListener, myPsiFileHolder);
@@ -70,6 +71,7 @@ protected void addPsiTreeChangeListener() {
 
     @Override
     public void dispose() {
+        myDisposed = true;
         CsvTableModel.super.dispose();
         myPsiTreeUpdater.dispose();
     }