org.eclipse.debug.ui/ui/org/eclipse/debug/internal/ui/importexport/breakpoints/WizardExportBreakpointsPage.java - platform/eclipse.platform.debug - Git at Google

 /*******************************************************************************
  * Copyright (c) 2006, 2018 IBM Corporation and others.
  *
  * This program and the accompanying materials
  * are made available under the terms of the Eclipse Public License 2.0
  * which accompanies this distribution, and is available at
  * https://www.eclipse.org/legal/epl-2.0/
  *
  * SPDX-License-Identifier: EPL-2.0
  *
  * Contributors:
  *     IBM Corporation - initial API and implementation
  *     Valentin Ciocoi - Bug 393700 - [Export breakpoints] Wrong file appears in overwrite dialog and wrong file can be overwritten
  *******************************************************************************/

 package org.eclipse.debug.internal.ui.importexport.breakpoints;

 import java.lang.reflect.InvocationTargetException;
 import java.util.ArrayList;
 import java.util.List;

 import org.eclipse.core.runtime.IPath;
 import org.eclipse.core.runtime.Path;
 import org.eclipse.debug.core.DebugPlugin;
 import org.eclipse.debug.core.model.IBreakpoint;
 import org.eclipse.debug.internal.core.IInternalDebugCoreConstants;
 import org.eclipse.debug.internal.ui.IDebugHelpContextIds;
 import org.eclipse.debug.internal.ui.IInternalDebugUIConstants;
 import org.eclipse.debug.internal.ui.SWTFactory;
 import org.eclipse.debug.internal.ui.views.breakpoints.BreakpointsViewer;
 import org.eclipse.debug.ui.DebugUITools;
 import org.eclipse.debug.ui.actions.ExportBreakpointsOperation;
 import org.eclipse.jface.dialogs.Dialog;
 import org.eclipse.jface.dialogs.IDialogSettings;
 import org.eclipse.jface.dialogs.MessageDialog;
 import org.eclipse.jface.viewers.CheckStateChangedEvent;
 import org.eclipse.jface.viewers.ICheckStateListener;
 import org.eclipse.jface.viewers.IStructuredSelection;
 import org.eclipse.jface.wizard.WizardPage;
 import org.eclipse.swt.SWT;
 import org.eclipse.swt.graphics.Image;
 import org.eclipse.swt.layout.GridData;
 import org.eclipse.swt.widgets.Button;
 import org.eclipse.swt.widgets.Composite;
 import org.eclipse.swt.widgets.Event;
 import org.eclipse.swt.widgets.FileDialog;
 import org.eclipse.swt.widgets.Listener;
 import org.eclipse.swt.widgets.Text;
 import org.eclipse.swt.widgets.Widget;
 import org.eclipse.ui.PlatformUI;

 import com.ibm.icu.text.MessageFormat;

 /**
  * <p>
  * This class provides an internal implementation of a WizardPage, which is used
  * in the Export Breakpoints wizard.
  * </p>
  * <p>
  * The implementation presents the breakpoints to the user as they are shown in
  * their current breakpoint view.
  * </p>
  * <p>
  * Possible extensions would include:
  * <ul>
  * <li> Able to change the views as in the breakpoints view itself
  * <li> Able to reorder groups from within the wizard - easier in the viewer itself though
  * </ul>
  * </p>
  * This class is used by <code>WizardExportBreakpoints</code>
  *
  * @since 3.2
  */
 public class WizardExportBreakpointsPage extends WizardPage implements Listener {

 	// widgets
 	private Button fOverwriteExistingFilesCheckbox = null;
 	private Text fDestinationNameField = null;
 	private Button fDestinationBrowseButton = null;
 	private EmbeddedBreakpointsViewer fTView = null;
 	private IStructuredSelection fSelection = null;
 	private Button fSelectAll = null;
 	private Button fDeselectAll = null;

 	//state constants
 	private static final String OVERWRITE_ALL_STATE = "overwrite"; //$NON-NLS-1$
 	private static final String DESTINATION_FILE_NAME = "filename"; //$NON-NLS-1$

 	/**
 	 * This is the default constructor. It accepts the name for the tab as a
 	 * parameter and an existing selection
 	 *
 	 * @param pageName the name of the page
 	 */
 	public WizardExportBreakpointsPage(String pageName, IStructuredSelection selection) {
 		super(pageName, ImportExportMessages.WizardExportBreakpoints_0, null);
 		fSelection = selection;
 	}

 	@Override
 	public void handleEvent(Event event) {
 		Widget source = event.widget;
 		if (source == fDestinationBrowseButton) {
 			handleDestinationBrowseButtonPressed();
 		}
 		else if (source == fDestinationNameField) {
 			handlePathTextModifiedEvent();
 		}
 		else if(source == fSelectAll) {
 			handleSelectAllPressed();
 		}
 		else if(source == fDeselectAll) {
 			handleDeselectAllPressed();
 		}
 	}

 	/**
 	 * Handles the select all button pressed
 	 *
 	 */
 	private void handleSelectAllPressed() {
 		BreakpointsViewer viewer = fTView.getViewer();
 		viewer.getTree().selectAll();
 		viewer.setCheckedElements(viewer.getStructuredSelection().toArray());
 		viewer.setGrayedElements(new Object[] {});
 		viewer.getTree().deselectAll();
 		setPageComplete(detectPageComplete());
 	}

 	/**
 	 * Handles the de-select all button pressed
 	 *
 	 */
 	private void handleDeselectAllPressed() {
 		BreakpointsViewer viewer = fTView.getViewer();
 		viewer.setCheckedElements(new Object[] {});
 		viewer.setGrayedElements(new Object[] {});
 		setPageComplete(detectPageComplete());
 	}

 	/**
 	 * This method handles the modified event from the path combo box.
 	 */
 	protected void handlePathTextModifiedEvent() {
 		setPageComplete(detectPageComplete());
 	}

 	/**
 	 * Open the SaveAsDialog so the user can save the listing of selected breakpoints
 	 */
 	protected void handleDestinationBrowseButtonPressed() {
 		FileDialog dialog = new FileDialog(getContainer().getShell(), SWT.SAVE | SWT.SHEET);
 		dialog.setFilterExtensions(new String[]{"*."+IImportExportConstants.EXTENSION});  //$NON-NLS-1$
 		dialog.setText(ImportExportMessages.WizardExportBreakpoints_0);
 		String file = dialog.open();
 		if(file != null) {
 			IPath path = new Path(file);
 			if (path != null) {
 				setErrorMessage(null);
 				if(path.getFileExtension() == null) {
 					path = path.addFileExtension(IImportExportConstants.EXTENSION);
 				}
 				else if(!path.getFileExtension().equals(IImportExportConstants.EXTENSION)) {
 					path = path.addFileExtension(IImportExportConstants.EXTENSION);
 				}
 				fDestinationNameField.setText(path.toString());
 			}
 		}
 	}

 	@Override
 	public void createControl(Composite parent) {
 		initializeDialogUnits(parent);
 		Composite composite = SWTFactory.createComposite(parent, 1, 1, GridData.FILL_BOTH);
 		SWTFactory.createLabel(composite, ImportExportMessages.WizardExportBreakpointsPage_2, 1);
 		fTView = new EmbeddedBreakpointsViewer(composite, DebugPlugin.getDefault().getBreakpointManager(), fSelection);
 		fTView.getViewer().addCheckStateListener(new ICheckStateListener() {
 			@Override
 			public void checkStateChanged(CheckStateChangedEvent event) {
 				setPageComplete(detectPageComplete());
 			}
 		});
 		fTView.getViewer().setSelection(fSelection);
 		//ensure we can see the beginning check-boxes etc. (bug 180971)
 		//this will not work in Windows Vista as there is no way to over-ride the default viewer item showing policy
 		//by setting the horizontal bar selection index. I.e. the following line of code is ignored in Vista
 		fTView.getViewer().getTree().getHorizontalBar().setSelection(0);
 		createButtonsGroup(composite);
 		createDestinationGroup(composite);
 		fOverwriteExistingFilesCheckbox = SWTFactory.createCheckButton(composite, ImportExportMessages.WizardBreakpointsPage_6, null, false, 1);
 		setControl(composite);
 		setPageComplete(false);
 		setMessage(ImportExportMessages.WizardBreakpointsPage_4);
 		restoreWidgetState();
 		PlatformUI.getWorkbench().getHelpSystem().setHelp(getControl(), IDebugHelpContextIds.EXPORT_BREAKPOINTS_WIZARD_PAGE);

 		Dialog.applyDialogFont(parent);
 	}

 	@Override
 	public Image getImage() {
 		return DebugUITools.getImage(IInternalDebugUIConstants.IMG_WIZBAN_EXPORT_BREAKPOINTS);
 	}

 	/**
      * Creates the buttons for selecting all or none of the elements.
      *
      * @param parent the parent control
      */
     private void createButtonsGroup(Composite parent) {
         Composite composite = SWTFactory.createComposite(parent, parent.getFont(), 3, 1, GridData.FILL_HORIZONTAL, 0, 0);
         fSelectAll = SWTFactory.createPushButton(composite, ImportExportMessages.WizardBreakpointsPage_1, null);
         fSelectAll.addListener(SWT.Selection, this);
 		fDeselectAll = SWTFactory.createPushButton(composite, ImportExportMessages.WizardBreakpointsPage_2, null);
 		fDeselectAll.addListener(SWT.Selection, this);
     }

 	/**
 	 * This method is used to determine if the page can be "finished".
 	 *
 	 * To be determined "finishable" there must be a save path and there must be
 	 * a selection in the tree.
 	 *
 	 * @return if the prerequisites of the wizard are met to allow the wizard to complete.
 	 */
 	private boolean detectPageComplete() {
 		String filepath = fDestinationNameField.getText().trim();
 		if (filepath.equals(IInternalDebugCoreConstants.EMPTY_STRING)) {
 			setErrorMessage(ImportExportMessages.WizardExportBreakpointsPage_0);
 			return false;
 		}
 		IPath path = new Path(filepath);
 		if(!path.removeLastSegments(1).toFile().exists()) {
 			setErrorMessage(ImportExportMessages.WizardExportBreakpointsPage_3);
 			return false;
 		}
 		int size = fTView.getCheckedElements().size();
 		if (size == 0) {
 			setErrorMessage(ImportExportMessages.WizardExportBreakpointsPage_1);
 			return false;
 		}
 		setErrorMessage(null);
 		setMessage(ImportExportMessages.WizardBreakpointsPage_4);
 		return true;
 	}

 	/**
 	 * Create the export destination specification widgets
 	 *
 	 * @param parent org.eclipse.swt.widgets.Composite
 	 */
 	protected void createDestinationGroup(Composite parent) {
 		// destination specification group
 		Composite comp = SWTFactory.createComposite(parent, parent.getFont(), 3, 1, GridData.FILL_HORIZONTAL, 0, 10);
 		SWTFactory.createLabel(comp, ImportExportMessages.WizardBreakpointsPage_7, 1);

 		fDestinationNameField = SWTFactory.createText(comp, SWT.SINGLE | SWT.BORDER, 1, GridData.HORIZONTAL_ALIGN_FILL | GridData.GRAB_HORIZONTAL);
 		fDestinationNameField.addListener(SWT.Modify, this);
 		fDestinationBrowseButton = SWTFactory.createPushButton(comp, ImportExportMessages.WizardBreakpointsPage_8, null);
 		fDestinationBrowseButton.addListener(SWT.Selection, this);
 	}

 	/**
 	 * Save the state of the widgets select, for successive invocations of the wizard
 	 */
 	private void saveWidgetState() {
 		IDialogSettings settings = getDialogSettings();
 		if(settings != null) {
 			settings.put(OVERWRITE_ALL_STATE, fOverwriteExistingFilesCheckbox.getSelection());
 			settings.put(DESTINATION_FILE_NAME, fDestinationNameField.getText().trim());
 		}
 	}

 	/**
 	 * Restores the state of the wizard from previous invocations
 	 */
 	private void restoreWidgetState() {
 		IDialogSettings settings = getDialogSettings();
 		if(settings != null) {
 			fOverwriteExistingFilesCheckbox.setSelection(Boolean.valueOf(settings.get(OVERWRITE_ALL_STATE)).booleanValue());
 			String filename = settings.get(DESTINATION_FILE_NAME);
 			if (filename != null) {
 				fDestinationNameField.setText(filename);
 			}
 		}
 	}

 	/**
 	 * The Finish button is clicked on the main wizard
 	 * dialog to export the breakpoints, we write them out with all persistent
 	 * information to a simple XML file via the use of XMLMemento.
 	 *
 	 * @return if the save operation was successful or not
 	 */
 	public boolean finish() {
 		try {
 			IPath path = new Path(fDestinationNameField.getText().trim());
 			if(path.getFileExtension() == null) {
 				path = path.addFileExtension(IImportExportConstants.EXTENSION);
 			}
 			else if(!path.getFileExtension().equals(IImportExportConstants.EXTENSION)) {
 				path = path.addFileExtension(IImportExportConstants.EXTENSION);
 			}
 			saveWidgetState();
 			if(path.toFile().exists() && !fOverwriteExistingFilesCheckbox.getSelection()) {
 				if (!MessageDialog.openQuestion(null, ImportExportMessages.WizardBreakpointsPage_12, MessageFormat.format(ImportExportMessages.ImportExportOperations_0, new Object[] { path.toPortableString() }))) {
 					return false;
 				}
 			}
 			// collect breakpoints
 			Object[] elements = fTView.getCheckedElements().toArray();
 			List<IBreakpoint> breakpoints = new ArrayList<>();
 			for (int i = 0; i < elements.length; i++) {
 				Object object = elements[i];
 				if (object instanceof IBreakpoint) {
 					breakpoints.add((IBreakpoint) object);
 				}
 			}
 			getContainer().run(false,
 					true,
 					new ExportBreakpointsOperation(
 							breakpoints.toArray(new IBreakpoint[breakpoints.size()]),
 							path.toOSString()));
 		}
 		catch (InterruptedException e) {
 			DebugPlugin.log(e);
 			return false;
 		}
 		catch (InvocationTargetException e) {
 			DebugPlugin.log(e);
 			return false;
 		}
 		return true;
 	}
 }
	/*******************************************************************************
	* Copyright (c) 2006, 2018 IBM Corporation and others.
	*
	* This program and the accompanying materials
	* are made available under the terms of the Eclipse Public License 2.0
	* which accompanies this distribution, and is available at
	* https://www.eclipse.org/legal/epl-2.0/
	*
	* SPDX-License-Identifier: EPL-2.0
	*
	* Contributors:
	* IBM Corporation - initial API and implementation
	* Valentin Ciocoi - Bug 393700 - [Export breakpoints] Wrong file appears in overwrite dialog and wrong file can be overwritten
	*******************************************************************************/

	package org.eclipse.debug.internal.ui.importexport.breakpoints;

	import java.lang.reflect.InvocationTargetException;
	import java.util.ArrayList;
	import java.util.List;

	import org.eclipse.core.runtime.IPath;
	import org.eclipse.core.runtime.Path;
	import org.eclipse.debug.core.DebugPlugin;
	import org.eclipse.debug.core.model.IBreakpoint;
	import org.eclipse.debug.internal.core.IInternalDebugCoreConstants;
	import org.eclipse.debug.internal.ui.IDebugHelpContextIds;
	import org.eclipse.debug.internal.ui.IInternalDebugUIConstants;
	import org.eclipse.debug.internal.ui.SWTFactory;
	import org.eclipse.debug.internal.ui.views.breakpoints.BreakpointsViewer;
	import org.eclipse.debug.ui.DebugUITools;
	import org.eclipse.debug.ui.actions.ExportBreakpointsOperation;
	import org.eclipse.jface.dialogs.Dialog;
	import org.eclipse.jface.dialogs.IDialogSettings;
	import org.eclipse.jface.dialogs.MessageDialog;
	import org.eclipse.jface.viewers.CheckStateChangedEvent;
	import org.eclipse.jface.viewers.ICheckStateListener;
	import org.eclipse.jface.viewers.IStructuredSelection;
	import org.eclipse.jface.wizard.WizardPage;
	import org.eclipse.swt.SWT;
	import org.eclipse.swt.graphics.Image;
	import org.eclipse.swt.layout.GridData;
	import org.eclipse.swt.widgets.Button;
	import org.eclipse.swt.widgets.Composite;
	import org.eclipse.swt.widgets.Event;
	import org.eclipse.swt.widgets.FileDialog;
	import org.eclipse.swt.widgets.Listener;
	import org.eclipse.swt.widgets.Text;
	import org.eclipse.swt.widgets.Widget;
	import org.eclipse.ui.PlatformUI;

	import com.ibm.icu.text.MessageFormat;

	/**
	* <p>
	* This class provides an internal implementation of a WizardPage, which is used
	* in the Export Breakpoints wizard.
	* </p>
	* <p>
	* The implementation presents the breakpoints to the user as they are shown in
	* their current breakpoint view.
	* </p>
	* <p>
	* Possible extensions would include:
	* <ul>
	* <li> Able to change the views as in the breakpoints view itself
	* <li> Able to reorder groups from within the wizard - easier in the viewer itself though
	* </ul>
	* </p>
	* This class is used by <code>WizardExportBreakpoints</code>
	*
	* @since 3.2
	*/
	public class WizardExportBreakpointsPage extends WizardPage implements Listener {

	// widgets
	private Button fOverwriteExistingFilesCheckbox = null;
	private Text fDestinationNameField = null;
	private Button fDestinationBrowseButton = null;
	private EmbeddedBreakpointsViewer fTView = null;
	private IStructuredSelection fSelection = null;
	private Button fSelectAll = null;
	private Button fDeselectAll = null;

	//state constants
	private static final String OVERWRITE_ALL_STATE = "overwrite"; //$NON-NLS-1$
	private static final String DESTINATION_FILE_NAME = "filename"; //$NON-NLS-1$

	/**
	* This is the default constructor. It accepts the name for the tab as a
	* parameter and an existing selection
	*
	* @param pageName the name of the page
	*/
	public WizardExportBreakpointsPage(String pageName, IStructuredSelection selection) {
	super(pageName, ImportExportMessages.WizardExportBreakpoints_0, null);
	fSelection = selection;
	}

	@Override
	public void handleEvent(Event event) {
	Widget source = event.widget;
	if (source == fDestinationBrowseButton) {
	handleDestinationBrowseButtonPressed();
	}
	else if (source == fDestinationNameField) {
	handlePathTextModifiedEvent();
	}
	else if(source == fSelectAll) {
	handleSelectAllPressed();
	}
	else if(source == fDeselectAll) {
	handleDeselectAllPressed();
	}
	}

	/**
	* Handles the select all button pressed
	*
	*/
	private void handleSelectAllPressed() {
	BreakpointsViewer viewer = fTView.getViewer();
	viewer.getTree().selectAll();
	viewer.setCheckedElements(viewer.getStructuredSelection().toArray());
	viewer.setGrayedElements(new Object[] {});
	viewer.getTree().deselectAll();
	setPageComplete(detectPageComplete());
	}

	/**
	* Handles the de-select all button pressed
	*
	*/
	private void handleDeselectAllPressed() {
	BreakpointsViewer viewer = fTView.getViewer();
	viewer.setCheckedElements(new Object[] {});
	viewer.setGrayedElements(new Object[] {});
	setPageComplete(detectPageComplete());
	}

	/**
	* This method handles the modified event from the path combo box.
	*/
	protected void handlePathTextModifiedEvent() {
	setPageComplete(detectPageComplete());
	}

	/**
	* Open the SaveAsDialog so the user can save the listing of selected breakpoints
	*/
	protected void handleDestinationBrowseButtonPressed() {
	FileDialog dialog = new FileDialog(getContainer().getShell(), SWT.SAVE \| SWT.SHEET);
	dialog.setFilterExtensions(new String[]{"*."+IImportExportConstants.EXTENSION}); //$NON-NLS-1$
	dialog.setText(ImportExportMessages.WizardExportBreakpoints_0);
	String file = dialog.open();
	if(file != null) {
	IPath path = new Path(file);
	if (path != null) {
	setErrorMessage(null);
	if(path.getFileExtension() == null) {
	path = path.addFileExtension(IImportExportConstants.EXTENSION);
	}
	else if(!path.getFileExtension().equals(IImportExportConstants.EXTENSION)) {
	path = path.addFileExtension(IImportExportConstants.EXTENSION);
	}
	fDestinationNameField.setText(path.toString());
	}
	}
	}

	@Override
	public void createControl(Composite parent) {
	initializeDialogUnits(parent);
	Composite composite = SWTFactory.createComposite(parent, 1, 1, GridData.FILL_BOTH);
	SWTFactory.createLabel(composite, ImportExportMessages.WizardExportBreakpointsPage_2, 1);
	fTView = new EmbeddedBreakpointsViewer(composite, DebugPlugin.getDefault().getBreakpointManager(), fSelection);
	fTView.getViewer().addCheckStateListener(new ICheckStateListener() {
	@Override
	public void checkStateChanged(CheckStateChangedEvent event) {
	setPageComplete(detectPageComplete());
	}
	});
	fTView.getViewer().setSelection(fSelection);
	//ensure we can see the beginning check-boxes etc. (bug 180971)
	//this will not work in Windows Vista as there is no way to over-ride the default viewer item showing policy
	//by setting the horizontal bar selection index. I.e. the following line of code is ignored in Vista
	fTView.getViewer().getTree().getHorizontalBar().setSelection(0);
	createButtonsGroup(composite);
	createDestinationGroup(composite);
	fOverwriteExistingFilesCheckbox = SWTFactory.createCheckButton(composite, ImportExportMessages.WizardBreakpointsPage_6, null, false, 1);
	setControl(composite);
	setPageComplete(false);
	setMessage(ImportExportMessages.WizardBreakpointsPage_4);
	restoreWidgetState();
	PlatformUI.getWorkbench().getHelpSystem().setHelp(getControl(), IDebugHelpContextIds.EXPORT_BREAKPOINTS_WIZARD_PAGE);

	Dialog.applyDialogFont(parent);
	}

	@Override
	public Image getImage() {
	return DebugUITools.getImage(IInternalDebugUIConstants.IMG_WIZBAN_EXPORT_BREAKPOINTS);
	}

	/**
	* Creates the buttons for selecting all or none of the elements.
	*
	* @param parent the parent control
	*/
	private void createButtonsGroup(Composite parent) {
	Composite composite = SWTFactory.createComposite(parent, parent.getFont(), 3, 1, GridData.FILL_HORIZONTAL, 0, 0);
	fSelectAll = SWTFactory.createPushButton(composite, ImportExportMessages.WizardBreakpointsPage_1, null);
	fSelectAll.addListener(SWT.Selection, this);
	fDeselectAll = SWTFactory.createPushButton(composite, ImportExportMessages.WizardBreakpointsPage_2, null);
	fDeselectAll.addListener(SWT.Selection, this);
	}

	/**
	* This method is used to determine if the page can be "finished".
	*
	* To be determined "finishable" there must be a save path and there must be
	* a selection in the tree.
	*
	* @return if the prerequisites of the wizard are met to allow the wizard to complete.
	*/
	private boolean detectPageComplete() {
	String filepath = fDestinationNameField.getText().trim();
	if (filepath.equals(IInternalDebugCoreConstants.EMPTY_STRING)) {
	setErrorMessage(ImportExportMessages.WizardExportBreakpointsPage_0);
	return false;
	}
	IPath path = new Path(filepath);
	if(!path.removeLastSegments(1).toFile().exists()) {
	setErrorMessage(ImportExportMessages.WizardExportBreakpointsPage_3);
	return false;
	}
	int size = fTView.getCheckedElements().size();
	if (size == 0) {
	setErrorMessage(ImportExportMessages.WizardExportBreakpointsPage_1);
	return false;
	}
	setErrorMessage(null);
	setMessage(ImportExportMessages.WizardBreakpointsPage_4);
	return true;
	}

	/**
	* Create the export destination specification widgets
	*
	* @param parent org.eclipse.swt.widgets.Composite
	*/
	protected void createDestinationGroup(Composite parent) {
	// destination specification group
	Composite comp = SWTFactory.createComposite(parent, parent.getFont(), 3, 1, GridData.FILL_HORIZONTAL, 0, 10);
	SWTFactory.createLabel(comp, ImportExportMessages.WizardBreakpointsPage_7, 1);

	fDestinationNameField = SWTFactory.createText(comp, SWT.SINGLE \| SWT.BORDER, 1, GridData.HORIZONTAL_ALIGN_FILL \| GridData.GRAB_HORIZONTAL);
	fDestinationNameField.addListener(SWT.Modify, this);
	fDestinationBrowseButton = SWTFactory.createPushButton(comp, ImportExportMessages.WizardBreakpointsPage_8, null);
	fDestinationBrowseButton.addListener(SWT.Selection, this);
	}

	/**
	* Save the state of the widgets select, for successive invocations of the wizard
	*/
	private void saveWidgetState() {
	IDialogSettings settings = getDialogSettings();
	if(settings != null) {
	settings.put(OVERWRITE_ALL_STATE, fOverwriteExistingFilesCheckbox.getSelection());
	settings.put(DESTINATION_FILE_NAME, fDestinationNameField.getText().trim());
	}
	}

	/**
	* Restores the state of the wizard from previous invocations
	*/
	private void restoreWidgetState() {
	IDialogSettings settings = getDialogSettings();
	if(settings != null) {
	fOverwriteExistingFilesCheckbox.setSelection(Boolean.valueOf(settings.get(OVERWRITE_ALL_STATE)).booleanValue());
	String filename = settings.get(DESTINATION_FILE_NAME);
	if (filename != null) {
	fDestinationNameField.setText(filename);
	}
	}
	}

	/**
	* The Finish button is clicked on the main wizard
	* dialog to export the breakpoints, we write them out with all persistent
	* information to a simple XML file via the use of XMLMemento.
	*
	* @return if the save operation was successful or not
	*/
	public boolean finish() {
	try {
	IPath path = new Path(fDestinationNameField.getText().trim());
	if(path.getFileExtension() == null) {
	path = path.addFileExtension(IImportExportConstants.EXTENSION);
	}
	else if(!path.getFileExtension().equals(IImportExportConstants.EXTENSION)) {
	path = path.addFileExtension(IImportExportConstants.EXTENSION);
	}
	saveWidgetState();
	if(path.toFile().exists() && !fOverwriteExistingFilesCheckbox.getSelection()) {
	if (!MessageDialog.openQuestion(null, ImportExportMessages.WizardBreakpointsPage_12, MessageFormat.format(ImportExportMessages.ImportExportOperations_0, new Object[] { path.toPortableString() }))) {
	return false;
	}
	}
	// collect breakpoints
	Object[] elements = fTView.getCheckedElements().toArray();
	List<IBreakpoint> breakpoints = new ArrayList<>();
	for (int i = 0; i < elements.length; i++) {
	Object object = elements[i];
	if (object instanceof IBreakpoint) {
	breakpoints.add((IBreakpoint) object);
	}
	}
	getContainer().run(false,
	true,
	new ExportBreakpointsOperation(
	breakpoints.toArray(new IBreakpoint[breakpoints.size()]),
	path.toOSString()));
	}
	catch (InterruptedException e) {
	DebugPlugin.log(e);
	return false;
	}
	catch (InvocationTargetException e) {
	DebugPlugin.log(e);
	return false;
	}
	return true;
	}
	}