import net.sourceforge.phpdt.internal.ui.util.TabFolderLayout;
import net.sourceforge.phpeclipse.PHPCore;
import net.sourceforge.phpeclipse.PHPeclipsePlugin;
-import net.sourceforge.phpeclipse.phpeditor.PHPSourceViewerConfiguration;
import org.eclipse.core.runtime.IStatus;
import org.eclipse.jface.preference.PreferencePage;
-import org.eclipse.jface.resource.JFaceResources;
import org.eclipse.jface.text.Document;
import org.eclipse.jface.text.IDocument;
-import org.eclipse.jface.text.source.SourceViewer;
import org.eclipse.swt.SWT;
import org.eclipse.swt.events.ModifyEvent;
import org.eclipse.swt.events.ModifyListener;