import org.eclipse.jface.text.source.ISourceViewer;
import org.eclipse.jface.text.source.IVerticalRuler;
import org.eclipse.jface.text.source.SourceViewerConfiguration;
-import org.eclipse.jface.util.ListenerList;
+//incastrix
+//import org.eclipse.jface.util.ListenerList;
+import org.eclipse.core.runtime.ListenerList;
import org.eclipse.jface.util.PropertyChangeEvent;
import org.eclipse.jface.window.Window;
import org.eclipse.swt.SWT;