gt: 				Composite result= (Composite) super.createDialogArea(parent);
context: /*******************************************************************************
   * Copyright (c) 2000, 2011 IBM Corporation and others.
   * All rights reserved. This program and the accompanying materials
   * are made available under the terms of the Eclipse Public License v1.0
   * which accompanies this distribution, and is available at
   * http://www.eclipse.org/legal/epl-v10.html
   *
   * Contributors:
   *     IBM Corporation - initial API and implementation
   *******************************************************************************/
  package org.eclipse.jdt.ui.refactoring;
  
  import java.lang.reflect.InvocationTargetException;
  import java.util.Arrays;
  
  import org.eclipse.swt.SWT;
  import org.eclipse.swt.events.SelectionAdapter;
  import org.eclipse.swt.events.SelectionEvent;
  import org.eclipse.swt.graphics.Image;
  import org.eclipse.swt.widgets.Button;
  import org.eclipse.swt.widgets.Composite;
  import org.eclipse.swt.widgets.Control;
  import org.eclipse.swt.widgets.Shell;
  
  import org.eclipse.core.runtime.Assert;
  import org.eclipse.core.runtime.CoreException;
  import org.eclipse.core.runtime.IProgressMonitor;
  import org.eclipse.core.runtime.SubProgressMonitor;
  
  import org.eclipse.core.resources.IncrementalProjectBuilder;
  import org.eclipse.core.resources.ResourcesPlugin;
  
  import org.eclipse.jface.operation.IRunnableWithProgress;
  import org.eclipse.jface.viewers.ArrayContentProvider;
  import org.eclipse.jface.viewers.ILabelProvider;
  import org.eclipse.jface.viewers.LabelProvider;
  import org.eclipse.jface.window.Window;
  
  import org.eclipse.ui.IEditorPart;
  import org.eclipse.ui.PlatformUI;
  import org.eclipse.ui.actions.GlobalBuildAction;
  import org.eclipse.ui.dialogs.ListDialog;
  
  import org.eclipse.jdt.ui.PreferenceConstants;
  
  import org.eclipse.jdt.internal.ui.JavaPlugin;
  import org.eclipse.jdt.internal.ui.javaeditor.EditorUtility;
  import org.eclipse.jdt.internal.ui.refactoring.RefactoringMessages;
  import org.eclipse.jdt.internal.ui.refactoring.RefactoringSavePreferences;
  import org.eclipse.jdt.internal.ui.util.CoreUtility;
  import org.eclipse.jdt.internal.ui.util.ExceptionHandler;
  
  
  /**
   * Helper to save dirty editors prior to starting a refactoring.
   * 
   * @see PreferenceConstants#REFACTOR_SAVE_ALL_EDITORS
   * @since 3.5
   * 
   * @noextend This class is not intended to be subclassed by clients.
   */
  public class RefactoringSaveHelper {
  
  	private boolean fFilesSaved;
  	private final int fSaveMode;
  
  	/**
  	 * Save mode to save all dirty editors (always ask).
  	 */
  	public static final int SAVE_ALL_ALWAYS_ASK= 1;
  
  	/**
  	 * Save mode to save all dirty editors.
  	 */
  	public static final int SAVE_ALL= 2;
  
  	/**
  	 * Save mode to not save any editors.
  	 */
  	public static final int SAVE_NOTHING= 3;
  	
  	/**
  	 * Save mode to save all editors that are known to cause trouble for Java refactorings, e.g.
  	 * editors on compilation units that are not in working copy mode.
  	 */
  	public static final int SAVE_REFACTORING= 4;
  	
  	/**
  	 * Creates a refactoring save helper with the given save mode.
  	 * 
  	 * @param saveMode one of the SAVE_* constants
  	 */
  	public RefactoringSaveHelper(int saveMode) {
  		Assert.isLegal(saveMode == SAVE_ALL_ALWAYS_ASK
  				|| saveMode == SAVE_ALL
  				|| saveMode == SAVE_NOTHING
  				|| saveMode == SAVE_REFACTORING);
  		fSaveMode= saveMode;
  	}
  
  	/**
  	 * Saves all editors. Depending on the {@link PreferenceConstants#REFACTOR_SAVE_ALL_EDITORS}
  	 * preference, the user is asked to save affected dirty editors.
  	 * 
  	 * @param shell the parent shell for the confirmation dialog
  	 * @return <code>true</code> if save was successful and refactoring can proceed;
  	 * 		false if the refactoring must be cancelled
  	 */
  	public boolean saveEditors(Shell shell) {
  		final IEditorPart[] dirtyEditors;
  		switch (fSaveMode) {
  			case SAVE_ALL_ALWAYS_ASK:
  			case SAVE_ALL:
  				dirtyEditors= EditorUtility.getDirtyEditors(true);
  				break;
  
  			case SAVE_REFACTORING:
  				dirtyEditors= EditorUtility.getDirtyEditorsToSave(false); // see https://bugs.eclipse.org/bugs/show_bug.cgi?id=175495
  				break;
  
  			case SAVE_NOTHING:
  				return true;
  
  			default:
  				throw new IllegalStateException(Integer.toString(fSaveMode));
  		}
  		if (dirtyEditors.length == 0)
  			return true;
  		if (! askSaveAllDirtyEditors(shell, dirtyEditors))
  			return false;
  		try {
  			// Save isn't cancelable.
  			boolean autoBuild= CoreUtility.setAutoBuilding(false);
  			try {
  				if (fSaveMode == SAVE_ALL_ALWAYS_ASK || fSaveMode == SAVE_ALL
  						|| RefactoringSavePreferences.getSaveAllEditors()) {
  					if (!JavaPlugin.getActiveWorkbenchWindow().getWorkbench().saveAllEditors(false))
  						return false;
  				} else {
  					IRunnableWithProgress runnable= new IRunnableWithProgress() {
  						@Override
  						public void run(IProgressMonitor pm) throws InterruptedException {
  							int count= dirtyEditors.length;
  							pm.beginTask("", count); //$NON-NLS-1$
  							for (int i= 0; i < count; i++) {
  								IEditorPart editor= dirtyEditors[i];
  								editor.doSave(new SubProgressMonitor(pm, 1));
  								if (pm.isCanceled())
  									throw new InterruptedException();
  							}
  							pm.done();
  						}
  					};
  					try {
  						PlatformUI.getWorkbench().getProgressService().runInUI(JavaPlugin.getActiveWorkbenchWindow(), runnable, null);
  					} catch (InterruptedException e) {
  						return false;
  					} catch (InvocationTargetException e) {
  						ExceptionHandler.handle(e, shell,
  								RefactoringMessages.RefactoringStarter_saving, RefactoringMessages.RefactoringStarter_unexpected_exception);
  						return false;
  					}
  				}
  				fFilesSaved= true;
  			} finally {
  				CoreUtility.setAutoBuilding(autoBuild);
  			}
  			return true;
  		} catch (CoreException e) {
  			ExceptionHandler.handle(e, shell,
  				RefactoringMessages.RefactoringStarter_saving, RefactoringMessages.RefactoringStarter_unexpected_exception);
  			return false;
  		}
  	}
  
  	/**
  	 * Triggers an incremental build if this save helper did save files before.
  	 */
  	public void triggerIncrementalBuild() {
  		if (fFilesSaved && ResourcesPlugin.getWorkspace().getDescription().isAutoBuilding()) {
  			new GlobalBuildAction(JavaPlugin.getActiveWorkbenchWindow(), IncrementalProjectBuilder.INCREMENTAL_BUILD).run();
  		}
  	}
  
  	/**
  	 * Returns whether this save helper did actually save any files.
  	 * 
  	 * @return <code>true</code> iff files have been saved
  	 */
  	public boolean didSaveFiles() {
  		return fFilesSaved;
  	}
  	
  	private boolean askSaveAllDirtyEditors(Shell shell, IEditorPart[] dirtyEditors) {
  		final boolean canSaveAutomatically= fSaveMode != SAVE_ALL_ALWAYS_ASK;
  		if (canSaveAutomatically && RefactoringSavePreferences.getSaveAllEditors()) //must save everything
  			return true;
  		ListDialog dialog= new ListDialog(shell) {
  			{
  				setShellStyle(getShellStyle() | SWT.APPLICATION_MODAL);
  			}
  			@Override
  			protected Control createDialogArea(Composite parent) {
  