org.eclipse.ltk.ui.refactoring/src/org/eclipse/ltk/internal/ui/refactoring/scripting/CreateRefactoringScriptWizard.java - jdt/eclipse.jdt.ui - Git at Google

 /*******************************************************************************
  * Copyright (c) 2006 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.ltk.internal.ui.refactoring.scripting;

 import java.io.BufferedInputStream;
 import java.io.BufferedOutputStream;
 import java.io.ByteArrayOutputStream;
 import java.io.File;
 import java.io.FileInputStream;
 import java.io.FileNotFoundException;
 import java.io.FileOutputStream;
 import java.io.IOException;
 import java.io.InputStream;
 import java.io.OutputStream;
 import java.io.UnsupportedEncodingException;
 import java.lang.reflect.InvocationTargetException;
 import java.net.URI;
 import java.util.Arrays;
 import java.util.Comparator;
 import java.util.HashSet;
 import java.util.Set;

 import org.eclipse.core.runtime.Assert;
 import org.eclipse.core.runtime.CoreException;
 import org.eclipse.core.runtime.IProgressMonitor;

 import org.eclipse.ltk.core.refactoring.RefactoringCore;
 import org.eclipse.ltk.core.refactoring.RefactoringDescriptor;
 import org.eclipse.ltk.core.refactoring.RefactoringDescriptorProxy;
 import org.eclipse.ltk.core.refactoring.history.IRefactoringHistoryService;
 import org.eclipse.ltk.core.refactoring.history.RefactoringHistory;

 import org.eclipse.ltk.internal.core.refactoring.IRefactoringSerializationConstants;
 import org.eclipse.ltk.internal.ui.refactoring.Messages;
 import org.eclipse.ltk.internal.ui.refactoring.RefactoringPluginImages;
 import org.eclipse.ltk.internal.ui.refactoring.RefactoringUIMessages;
 import org.eclipse.ltk.internal.ui.refactoring.RefactoringUIPlugin;

 import org.eclipse.swt.SWTError;
 import org.eclipse.swt.dnd.Clipboard;
 import org.eclipse.swt.dnd.TextTransfer;
 import org.eclipse.swt.dnd.Transfer;

 import org.eclipse.jface.dialogs.IDialogConstants;
 import org.eclipse.jface.dialogs.IDialogSettings;
 import org.eclipse.jface.dialogs.MessageDialog;
 import org.eclipse.jface.operation.IRunnableContext;
 import org.eclipse.jface.operation.IRunnableWithProgress;
 import org.eclipse.jface.wizard.IWizardContainer;
 import org.eclipse.jface.wizard.Wizard;

 import org.eclipse.ui.PlatformUI;

 /**
  * Wizard to create a refactoring script.
  *
  * @since 3.2
  */
 public final class CreateRefactoringScriptWizard extends Wizard {

 	/** The dialog settings key */
 	private static String DIALOG_SETTINGS_KEY= "CreateRefactoringScriptWizard"; //$NON-NLS-1$

 	/** Has the wizard new dialog settings? */
 	private boolean fNewSettings;

 	/** The selected refactoring descriptors, or the empty array */
 	private RefactoringDescriptorProxy[] fRefactoringDescriptors= {};

 	/** The refactoring history */
 	private RefactoringHistory fRefactoringHistory;

 	/** The refactoring script location, or <code>null</code> */
 	private URI fScriptLocation= null;

 	/** Should the wizard put the refactoring script to the clipboard? */
 	private boolean fUseClipboard= false;

 	/** The create refactoring script wizard page */
 	private final CreateRefactoringScriptWizardPage fWizardPage;

 	/**
 	 * Creates a new create refactoring script wizard.
 	 */
 	public CreateRefactoringScriptWizard() {
 		setNeedsProgressMonitor(false);
 		setWindowTitle(ScriptingMessages.CreateRefactoringScriptWizard_caption);
 		setDefaultPageImageDescriptor(RefactoringPluginImages.DESC_WIZBAN_CREATE_SCRIPT);
 		final IDialogSettings settings= RefactoringUIPlugin.getDefault().getDialogSettings();
 		final IDialogSettings section= settings.getSection(DIALOG_SETTINGS_KEY);
 		if (section == null)
 			fNewSettings= true;
 		else {
 			fNewSettings= false;
 			setDialogSettings(section);
 		}
 		try {
 			IRunnableContext context= PlatformUI.getWorkbench().getActiveWorkbenchWindow();
 			if (context == null)
 				context= PlatformUI.getWorkbench().getProgressService();
 			context.run(false, false, new IRunnableWithProgress() {

 				public void run(final IProgressMonitor monitor) throws InvocationTargetException, InterruptedException {
 					final IRefactoringHistoryService service= RefactoringCore.getHistoryService();
 					try {
 						service.connect();
 						fRefactoringHistory= service.getWorkspaceHistory(monitor);
 					} finally {
 						service.disconnect();
 					}
 				}
 			});
 		} catch (InvocationTargetException exception) {
 			RefactoringUIPlugin.log(exception);
 		} catch (InterruptedException exception) {
 			// Do nothing
 		}
 		fWizardPage= new CreateRefactoringScriptWizardPage(this);
 	}

 	/**
 	 * {@inheritDoc}
 	 */
 	public void addPages() {
 		super.addPages();
 		addPage(fWizardPage);
 	}

 	/**
 	 * {@inheritDoc}
 	 */
 	public boolean canFinish() {
 		return (fUseClipboard || fScriptLocation != null) && fRefactoringDescriptors.length > 0;
 	}

 	/**
 	 * Returns the refactoring history to create a script from.
 	 *
 	 * @return the refactoring history.
 	 */
 	public RefactoringHistory getRefactoringHistory() {
 		return fRefactoringHistory;
 	}

 	/**
 	 * Performs the actual refactoring script export.
 	 *
 	 * @return <code>true</code> if the wizard can be finished,
 	 *         <code>false</code> otherwise
 	 */
 	private boolean performExport() {
 		RefactoringDescriptorProxy[] writable= fRefactoringDescriptors;
 		if (fScriptLocation != null) {
 			final File file= new File(fScriptLocation);
 			if (file.exists()) {
 				final MessageDialog message= new MessageDialog(getShell(), getShell().getText(), null, Messages.format(ScriptingMessages.CreateRefactoringScriptWizard_overwrite_query, new String[] { ScriptingMessages.CreateRefactoringScriptWizard_merge_button, ScriptingMessages.CreateRefactoringScriptWizard_overwrite_button}), MessageDialog.QUESTION, new String[] { ScriptingMessages.CreateRefactoringScriptWizard_merge_button, ScriptingMessages.CreateRefactoringScriptWizard_overwrite_button, IDialogConstants.CANCEL_LABEL}, 0);
 				final int result= message.open();
 				if (result == 0) {
 					InputStream stream= null;
 					try {
 						stream= new BufferedInputStream(new FileInputStream(file));
 						final RefactoringDescriptorProxy[] existing= RefactoringCore.getHistoryService().readRefactoringHistory(stream, RefactoringDescriptor.NONE).getDescriptors();
 						final Set set= new HashSet();
 						for (int index= 0; index < existing.length; index++)
 							set.add(existing[index]);
 						for (int index= 0; index < fRefactoringDescriptors.length; index++)
 							set.add(fRefactoringDescriptors[index]);
 						writable= new RefactoringDescriptorProxy[set.size()];
 						set.toArray(writable);
 					} catch (FileNotFoundException exception) {
 						MessageDialog.openError(getShell(), RefactoringUIMessages.ChangeExceptionHandler_refactoring, exception.getLocalizedMessage());
 						return true;
 					} catch (CoreException exception) {
 						final Throwable throwable= exception.getStatus().getException();
 						if (throwable instanceof IOException) {
 							MessageDialog.openError(getShell(), RefactoringUIMessages.ChangeExceptionHandler_refactoring, throwable.getLocalizedMessage());
 							return true;
 						} else {
 							RefactoringUIPlugin.log(exception);
 							return false;
 						}
 					} finally {
 						if (stream != null) {
 							try {
 								stream.close();
 							} catch (IOException exception) {
 								// Do nothing
 							}
 						}
 					}
 				} else if (result == 2)
 					return false;
 			}
 			final OutputStream[] stream= { null};
 			try {
 				stream[0]= new BufferedOutputStream(new FileOutputStream(file));
 				Arrays.sort(writable, new Comparator() {

 					public final int compare(final Object first, final Object second) {
 						final RefactoringDescriptorProxy predecessor= (RefactoringDescriptorProxy) first;
 						final RefactoringDescriptorProxy successor= (RefactoringDescriptorProxy) second;
 						final long delta= predecessor.getTimeStamp() - successor.getTimeStamp();
 						if (delta > 0)
 							return 1;
 						else if (delta < 0)
 							return -1;
 						return 0;
 					}
 				});
 				final RefactoringDescriptorProxy[] finalWritable= writable;
 				try {
 					getContainer().run(false, false, new IRunnableWithProgress() {

 						public void run(final IProgressMonitor monitor) throws InvocationTargetException, InterruptedException {
 							try {
 								RefactoringCore.getHistoryService().writeRefactoringDescriptors(finalWritable, stream[0], RefactoringDescriptor.NONE, false, monitor);
 							} catch (CoreException exception) {
 								throw new InvocationTargetException(exception);
 							}
 						}
 					});
 				} catch (InvocationTargetException exception) {
 					final Throwable throwable= exception.getTargetException();
 					if (throwable instanceof CoreException) {
 						final CoreException extended= (CoreException) throwable;
 						throw extended;
 					}
 				} catch (InterruptedException exception) {
 					// Do nothing
 				}
 				return true;
 			} catch (CoreException exception) {
 				final Throwable throwable= exception.getStatus().getException();
 				if (throwable instanceof IOException) {
 					MessageDialog.openError(getShell(), RefactoringUIMessages.ChangeExceptionHandler_refactoring, throwable.getLocalizedMessage());
 					return true;
 				} else {
 					RefactoringUIPlugin.log(exception);
 					return false;
 				}
 			} catch (FileNotFoundException exception) {
 				MessageDialog.openError(getShell(), RefactoringUIMessages.ChangeExceptionHandler_refactoring, exception.getLocalizedMessage());
 				return true;
 			} finally {
 				if (stream[0] != null) {
 					try {
 						stream[0].close();
 					} catch (IOException exception) {
 						// Do nothing
 					}
 				}
 			}
 		} else if (fUseClipboard) {
 			try {
 				final ByteArrayOutputStream stream= new ByteArrayOutputStream(2048);
 				Arrays.sort(writable, new Comparator() {

 					public final int compare(final Object first, final Object second) {
 						final RefactoringDescriptorProxy predecessor= (RefactoringDescriptorProxy) first;
 						final RefactoringDescriptorProxy successor= (RefactoringDescriptorProxy) second;
 						final long delta= predecessor.getTimeStamp() - successor.getTimeStamp();
 						if (delta > 0)
 							return 1;
 						else if (delta < 0)
 							return -1;
 						return 0;
 					}
 				});
 				final RefactoringDescriptorProxy[] finalWritable= writable;
 				try {
 					getContainer().run(false, false, new IRunnableWithProgress() {

 						public void run(final IProgressMonitor monitor) throws InvocationTargetException, InterruptedException {
 							try {
 								RefactoringCore.getHistoryService().writeRefactoringDescriptors(finalWritable, stream, RefactoringDescriptor.NONE, false, monitor);
 							} catch (CoreException exception) {
 								throw new InvocationTargetException(exception);
 							}
 						}
 					});
 				} catch (InvocationTargetException exception) {
 					final Throwable throwable= exception.getTargetException();
 					if (throwable instanceof CoreException) {
 						final CoreException extended= (CoreException) throwable;
 						throw extended;
 					}
 				} catch (InterruptedException exception) {
 					// Do nothing
 				}
 				try {
 					final String string= stream.toString(IRefactoringSerializationConstants.OUTPUT_ENCODING);
 					Clipboard clipboard= null;
 					try {
 						clipboard= new Clipboard(getShell().getDisplay());
 						try {
 							clipboard.setContents(new Object[] { string}, new Transfer[] { TextTransfer.getInstance()});
 							return true;
 						} catch (SWTError error) {
 							MessageDialog.openError(getShell(), RefactoringUIMessages.ChangeExceptionHandler_refactoring, error.getLocalizedMessage());
 							return false;
 						}
 					} finally {
 						if (clipboard != null)
 							clipboard.dispose();
 					}
 				} catch (UnsupportedEncodingException exception) {
 					// Does not happen
 					return false;
 				}
 			} catch (CoreException exception) {
 				final Throwable throwable= exception.getStatus().getException();
 				if (throwable instanceof IOException) {
 					MessageDialog.openError(getShell(), RefactoringUIMessages.ChangeExceptionHandler_refactoring, throwable.getLocalizedMessage());
 					return true;
 				} else {
 					RefactoringUIPlugin.log(exception);
 					return false;
 				}
 			}
 		}
 		return false;
 	}

 	/**
 	 * {@inheritDoc}
 	 */
 	public boolean performFinish() {
 		if (fNewSettings) {
 			final IDialogSettings settings= RefactoringUIPlugin.getDefault().getDialogSettings();
 			IDialogSettings section= settings.getSection(DIALOG_SETTINGS_KEY);
 			section= settings.addNewSection(DIALOG_SETTINGS_KEY);
 			setDialogSettings(section);
 		}
 		fWizardPage.performFinish();
 		return performExport();
 	}

 	/**
 	 * Sets the selected refactoring descriptors.
 	 *
 	 * @param proxies
 	 *            the selected refactoring descriptors
 	 */
 	public void setRefactoringDescriptors(final RefactoringDescriptorProxy[] proxies) {
 		Assert.isNotNull(proxies);
 		fRefactoringDescriptors= proxies;
 		final IWizardContainer wizard= getContainer();
 		if (wizard.getCurrentPage() != null)
 			wizard.updateButtons();
 	}

 	/**
 	 * Sets the refactoring script location.
 	 *
 	 * @param location
 	 *            the refactoring script location, or <code>null</code>
 	 */
 	public void setRefactoringScript(final URI location) {
 		fScriptLocation= location;
 		final IWizardContainer wizard= getContainer();
 		if (wizard.getCurrentPage() != null)
 			wizard.updateButtons();
 	}

 	/**
 	 * Determines whether the wizard should save the refactoring script to the
 	 * clipboard.
 	 *
 	 * @param clipboard
 	 *            <code>true</code> to save the script to clipboard,
 	 *            <code>false</code> otherwise
 	 */
 	public void setUseClipboard(final boolean clipboard) {
 		fUseClipboard= clipboard;
 		final IWizardContainer wizard= getContainer();
 		if (wizard.getCurrentPage() != null)
 			wizard.updateButtons();
 	}
 }
	/*******************************************************************************
	* Copyright (c) 2006 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.ltk.internal.ui.refactoring.scripting;

	import java.io.BufferedInputStream;
	import java.io.BufferedOutputStream;
	import java.io.ByteArrayOutputStream;
	import java.io.File;
	import java.io.FileInputStream;
	import java.io.FileNotFoundException;
	import java.io.FileOutputStream;
	import java.io.IOException;
	import java.io.InputStream;
	import java.io.OutputStream;
	import java.io.UnsupportedEncodingException;
	import java.lang.reflect.InvocationTargetException;
	import java.net.URI;
	import java.util.Arrays;
	import java.util.Comparator;
	import java.util.HashSet;
	import java.util.Set;

	import org.eclipse.core.runtime.Assert;
	import org.eclipse.core.runtime.CoreException;
	import org.eclipse.core.runtime.IProgressMonitor;

	import org.eclipse.ltk.core.refactoring.RefactoringCore;
	import org.eclipse.ltk.core.refactoring.RefactoringDescriptor;
	import org.eclipse.ltk.core.refactoring.RefactoringDescriptorProxy;
	import org.eclipse.ltk.core.refactoring.history.IRefactoringHistoryService;
	import org.eclipse.ltk.core.refactoring.history.RefactoringHistory;

	import org.eclipse.ltk.internal.core.refactoring.IRefactoringSerializationConstants;
	import org.eclipse.ltk.internal.ui.refactoring.Messages;
	import org.eclipse.ltk.internal.ui.refactoring.RefactoringPluginImages;
	import org.eclipse.ltk.internal.ui.refactoring.RefactoringUIMessages;
	import org.eclipse.ltk.internal.ui.refactoring.RefactoringUIPlugin;

	import org.eclipse.swt.SWTError;
	import org.eclipse.swt.dnd.Clipboard;
	import org.eclipse.swt.dnd.TextTransfer;
	import org.eclipse.swt.dnd.Transfer;

	import org.eclipse.jface.dialogs.IDialogConstants;
	import org.eclipse.jface.dialogs.IDialogSettings;
	import org.eclipse.jface.dialogs.MessageDialog;
	import org.eclipse.jface.operation.IRunnableContext;
	import org.eclipse.jface.operation.IRunnableWithProgress;
	import org.eclipse.jface.wizard.IWizardContainer;
	import org.eclipse.jface.wizard.Wizard;

	import org.eclipse.ui.PlatformUI;

	/**
	* Wizard to create a refactoring script.
	*
	* @since 3.2
	*/
	public final class CreateRefactoringScriptWizard extends Wizard {

	/** The dialog settings key */
	private static String DIALOG_SETTINGS_KEY= "CreateRefactoringScriptWizard"; //$NON-NLS-1$

	/** Has the wizard new dialog settings? */
	private boolean fNewSettings;

	/** The selected refactoring descriptors, or the empty array */
	private RefactoringDescriptorProxy[] fRefactoringDescriptors= {};

	/** The refactoring history */
	private RefactoringHistory fRefactoringHistory;

	/** The refactoring script location, or <code>null</code> */
	private URI fScriptLocation= null;

	/** Should the wizard put the refactoring script to the clipboard? */
	private boolean fUseClipboard= false;

	/** The create refactoring script wizard page */
	private final CreateRefactoringScriptWizardPage fWizardPage;

	/**
	* Creates a new create refactoring script wizard.
	*/
	public CreateRefactoringScriptWizard() {
	setNeedsProgressMonitor(false);
	setWindowTitle(ScriptingMessages.CreateRefactoringScriptWizard_caption);
	setDefaultPageImageDescriptor(RefactoringPluginImages.DESC_WIZBAN_CREATE_SCRIPT);
	final IDialogSettings settings= RefactoringUIPlugin.getDefault().getDialogSettings();
	final IDialogSettings section= settings.getSection(DIALOG_SETTINGS_KEY);
	if (section == null)
	fNewSettings= true;
	else {
	fNewSettings= false;
	setDialogSettings(section);
	}
	try {
	IRunnableContext context= PlatformUI.getWorkbench().getActiveWorkbenchWindow();
	if (context == null)
	context= PlatformUI.getWorkbench().getProgressService();
	context.run(false, false, new IRunnableWithProgress() {

	public void run(final IProgressMonitor monitor) throws InvocationTargetException, InterruptedException {
	final IRefactoringHistoryService service= RefactoringCore.getHistoryService();
	try {
	service.connect();
	fRefactoringHistory= service.getWorkspaceHistory(monitor);
	} finally {
	service.disconnect();
	}
	}
	});
	} catch (InvocationTargetException exception) {
	RefactoringUIPlugin.log(exception);
	} catch (InterruptedException exception) {
	// Do nothing
	}
	fWizardPage= new CreateRefactoringScriptWizardPage(this);
	}

	/**
	* {@inheritDoc}
	*/
	public void addPages() {
	super.addPages();
	addPage(fWizardPage);
	}

	/**
	* {@inheritDoc}
	*/
	public boolean canFinish() {
	return (fUseClipboard \|\| fScriptLocation != null) && fRefactoringDescriptors.length > 0;
	}

	/**
	* Returns the refactoring history to create a script from.
	*
	* @return the refactoring history.
	*/
	public RefactoringHistory getRefactoringHistory() {
	return fRefactoringHistory;
	}

	/**
	* Performs the actual refactoring script export.
	*
	* @return <code>true</code> if the wizard can be finished,
	* <code>false</code> otherwise
	*/
	private boolean performExport() {
	RefactoringDescriptorProxy[] writable= fRefactoringDescriptors;
	if (fScriptLocation != null) {
	final File file= new File(fScriptLocation);
	if (file.exists()) {
	final MessageDialog message= new MessageDialog(getShell(), getShell().getText(), null, Messages.format(ScriptingMessages.CreateRefactoringScriptWizard_overwrite_query, new String[] { ScriptingMessages.CreateRefactoringScriptWizard_merge_button, ScriptingMessages.CreateRefactoringScriptWizard_overwrite_button}), MessageDialog.QUESTION, new String[] { ScriptingMessages.CreateRefactoringScriptWizard_merge_button, ScriptingMessages.CreateRefactoringScriptWizard_overwrite_button, IDialogConstants.CANCEL_LABEL}, 0);
	final int result= message.open();
	if (result == 0) {
	InputStream stream= null;
	try {
	stream= new BufferedInputStream(new FileInputStream(file));
	final RefactoringDescriptorProxy[] existing= RefactoringCore.getHistoryService().readRefactoringHistory(stream, RefactoringDescriptor.NONE).getDescriptors();
	final Set set= new HashSet();
	for (int index= 0; index < existing.length; index++)
	set.add(existing[index]);
	for (int index= 0; index < fRefactoringDescriptors.length; index++)
	set.add(fRefactoringDescriptors[index]);
	writable= new RefactoringDescriptorProxy[set.size()];
	set.toArray(writable);
	} catch (FileNotFoundException exception) {
	MessageDialog.openError(getShell(), RefactoringUIMessages.ChangeExceptionHandler_refactoring, exception.getLocalizedMessage());
	return true;
	} catch (CoreException exception) {
	final Throwable throwable= exception.getStatus().getException();
	if (throwable instanceof IOException) {
	MessageDialog.openError(getShell(), RefactoringUIMessages.ChangeExceptionHandler_refactoring, throwable.getLocalizedMessage());
	return true;
	} else {
	RefactoringUIPlugin.log(exception);
	return false;
	}
	} finally {
	if (stream != null) {
	try {
	stream.close();
	} catch (IOException exception) {
	// Do nothing
	}
	}
	}
	} else if (result == 2)
	return false;
	}
	final OutputStream[] stream= { null};
	try {
	stream[0]= new BufferedOutputStream(new FileOutputStream(file));
	Arrays.sort(writable, new Comparator() {

	public final int compare(final Object first, final Object second) {
	final RefactoringDescriptorProxy predecessor= (RefactoringDescriptorProxy) first;
	final RefactoringDescriptorProxy successor= (RefactoringDescriptorProxy) second;
	final long delta= predecessor.getTimeStamp() - successor.getTimeStamp();
	if (delta > 0)
	return 1;
	else if (delta < 0)
	return -1;
	return 0;
	}
	});
	final RefactoringDescriptorProxy[] finalWritable= writable;
	try {
	getContainer().run(false, false, new IRunnableWithProgress() {

	public void run(final IProgressMonitor monitor) throws InvocationTargetException, InterruptedException {
	try {
	RefactoringCore.getHistoryService().writeRefactoringDescriptors(finalWritable, stream[0], RefactoringDescriptor.NONE, false, monitor);
	} catch (CoreException exception) {
	throw new InvocationTargetException(exception);
	}
	}
	});
	} catch (InvocationTargetException exception) {
	final Throwable throwable= exception.getTargetException();
	if (throwable instanceof CoreException) {
	final CoreException extended= (CoreException) throwable;
	throw extended;
	}
	} catch (InterruptedException exception) {
	// Do nothing
	}
	return true;
	} catch (CoreException exception) {
	final Throwable throwable= exception.getStatus().getException();
	if (throwable instanceof IOException) {
	MessageDialog.openError(getShell(), RefactoringUIMessages.ChangeExceptionHandler_refactoring, throwable.getLocalizedMessage());
	return true;
	} else {
	RefactoringUIPlugin.log(exception);
	return false;
	}
	} catch (FileNotFoundException exception) {
	MessageDialog.openError(getShell(), RefactoringUIMessages.ChangeExceptionHandler_refactoring, exception.getLocalizedMessage());
	return true;
	} finally {
	if (stream[0] != null) {
	try {
	stream[0].close();
	} catch (IOException exception) {
	// Do nothing
	}
	}
	}
	} else if (fUseClipboard) {
	try {
	final ByteArrayOutputStream stream= new ByteArrayOutputStream(2048);
	Arrays.sort(writable, new Comparator() {

	public final int compare(final Object first, final Object second) {
	final RefactoringDescriptorProxy predecessor= (RefactoringDescriptorProxy) first;
	final RefactoringDescriptorProxy successor= (RefactoringDescriptorProxy) second;
	final long delta= predecessor.getTimeStamp() - successor.getTimeStamp();
	if (delta > 0)
	return 1;
	else if (delta < 0)
	return -1;
	return 0;
	}
	});
	final RefactoringDescriptorProxy[] finalWritable= writable;
	try {
	getContainer().run(false, false, new IRunnableWithProgress() {

	public void run(final IProgressMonitor monitor) throws InvocationTargetException, InterruptedException {
	try {
	RefactoringCore.getHistoryService().writeRefactoringDescriptors(finalWritable, stream, RefactoringDescriptor.NONE, false, monitor);
	} catch (CoreException exception) {
	throw new InvocationTargetException(exception);
	}
	}
	});
	} catch (InvocationTargetException exception) {
	final Throwable throwable= exception.getTargetException();
	if (throwable instanceof CoreException) {
	final CoreException extended= (CoreException) throwable;
	throw extended;
	}
	} catch (InterruptedException exception) {
	// Do nothing
	}
	try {
	final String string= stream.toString(IRefactoringSerializationConstants.OUTPUT_ENCODING);
	Clipboard clipboard= null;
	try {
	clipboard= new Clipboard(getShell().getDisplay());
	try {
	clipboard.setContents(new Object[] { string}, new Transfer[] { TextTransfer.getInstance()});
	return true;
	} catch (SWTError error) {
	MessageDialog.openError(getShell(), RefactoringUIMessages.ChangeExceptionHandler_refactoring, error.getLocalizedMessage());
	return false;
	}
	} finally {
	if (clipboard != null)
	clipboard.dispose();
	}
	} catch (UnsupportedEncodingException exception) {
	// Does not happen
	return false;
	}
	} catch (CoreException exception) {
	final Throwable throwable= exception.getStatus().getException();
	if (throwable instanceof IOException) {
	MessageDialog.openError(getShell(), RefactoringUIMessages.ChangeExceptionHandler_refactoring, throwable.getLocalizedMessage());
	return true;
	} else {
	RefactoringUIPlugin.log(exception);
	return false;
	}
	}
	}
	return false;
	}

	/**
	* {@inheritDoc}
	*/
	public boolean performFinish() {
	if (fNewSettings) {
	final IDialogSettings settings= RefactoringUIPlugin.getDefault().getDialogSettings();
	IDialogSettings section= settings.getSection(DIALOG_SETTINGS_KEY);
	section= settings.addNewSection(DIALOG_SETTINGS_KEY);
	setDialogSettings(section);
	}
	fWizardPage.performFinish();
	return performExport();
	}

	/**
	* Sets the selected refactoring descriptors.
	*
	* @param proxies
	* the selected refactoring descriptors
	*/
	public void setRefactoringDescriptors(final RefactoringDescriptorProxy[] proxies) {
	Assert.isNotNull(proxies);
	fRefactoringDescriptors= proxies;
	final IWizardContainer wizard= getContainer();
	if (wizard.getCurrentPage() != null)
	wizard.updateButtons();
	}

	/**
	* Sets the refactoring script location.
	*
	* @param location
	* the refactoring script location, or <code>null</code>
	*/
	public void setRefactoringScript(final URI location) {
	fScriptLocation= location;
	final IWizardContainer wizard= getContainer();
	if (wizard.getCurrentPage() != null)
	wizard.updateButtons();
	}

	/**
	* Determines whether the wizard should save the refactoring script to the
	* clipboard.
	*
	* @param clipboard
	* <code>true</code> to save the script to clipboard,
	* <code>false</code> otherwise
	*/
	public void setUseClipboard(final boolean clipboard) {
	fUseClipboard= clipboard;
	final IWizardContainer wizard= getContainer();
	if (wizard.getCurrentPage() != null)
	wizard.updateButtons();
	}
	}