Bug 66234 [projection] Revert file sometimes does not display the imports
I was able to recreate the scenario, I have a Java file in a Java project as /* * Created on Jun 8, 2004 * * TODO To change the template for this generated file go to * Window - Preferences - Java - Code Style - Code Templates */ package com; import java.net.URL; import java.util.Date; /** * @author admin * * TODO To change the template for this generated type comment go to * Window - Preferences - Java - Code Style - Code Templates */ public class Test { Date xyz; URL abc; } I open it in the editor, delete the keyword 'package' so that that line only says com. Now I right click on file and select 'Revert File'. Notice that the imports list disappears. This is in M9.
org.eclipse.jdt.ui/ui/org/eclipse/jdt/internal/ui/javaeditor/JavaEditor.java
ISourceViewer sourceViewer= getSourceViewer();
			if (sourceViewer != null)
				sourceViewer.removeTextInputListener(this);
			
			IDocumentProvider documentProvider= getDocumentProvider();
			if (documentProvider != null) {
				IDocument document= documentProvider.getDocument(getEditorInput());
				if (document != null)
					document.removeDocumentListener(this);
			}
				
			IPreferenceStore preferenceStore= getPreferenceStore();
			if (preferenceStore != null)
				preferenceStore.removePropertyChangeListener(this);
			
			if (sourceViewer == null)
				return;
			
			StyledText text= sourceViewer.getTextWidget();
			if (text == null || text.isDisposed())
				return;
				
			text.removeKeyListener(this);
			text.removeMouseListener(this);
			text.removeMouseMoveListener(this);
			text.removeFocusListener(this);
			text.removePaintListener(this);
			
			((ITextViewerExtension4)sourceViewer).removeTextPresentationListener(this);
		}